JPH07266313A - Woody synthetic powder, its manufacture and device, woody synthetic plate using the powder, and method and apparatus for extrusion molding the plate - Google Patents
Woody synthetic powder, its manufacture and device, woody synthetic plate using the powder, and method and apparatus for extrusion molding the plateInfo
- Publication number
- JPH07266313A JPH07266313A JP6194416A JP19441694A JPH07266313A JP H07266313 A JPH07266313 A JP H07266313A JP 6194416 A JP6194416 A JP 6194416A JP 19441694 A JP19441694 A JP 19441694A JP H07266313 A JPH07266313 A JP H07266313A
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- JP
- Japan
- Prior art keywords
- molding
- wood
- synthetic
- extruded
- extrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セルロース系の破砕物
を主たる成形素材とした木質合成粉及びその製造方法並
びに装置、前記木質合成粉を用いた木質合成板又、前記
木質合成板を含む木質合成板の押出成形方法及びその装
置に関し、より詳しくは、前記セルロース系の破砕物と
熱可塑性樹脂成形材を押出機で混練して成形ダイより所
定の肉厚に成形して押出すために用いて好適な木質合成
粉、そして、その製法と装置、又、上記押出機による木
質合成板の押出成形方法及びその装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention includes a synthetic wood powder mainly composed of cellulosic crushed materials, a method and an apparatus for producing the synthetic wood powder, a synthetic wood plate using the synthetic wood powder, and the synthetic wood plate. With respect to the extrusion molding method and apparatus for a wooden synthetic board, more specifically, in order to extrude by kneading the cellulosic crushed material and a thermoplastic resin molding material with an extruder and molding into a predetermined wall thickness from a molding die. The present invention relates to a synthetic wood powder suitable for use, a manufacturing method and an apparatus thereof, and a method and an apparatus for extruding a synthetic wood board by the above extruder.
【０００２】特に、前記セルロース系の破砕物および熱
可塑性樹脂成形材は、一方又は双方が、建築廃材料ある
いは、自動車、家庭電気製品を始め、生活の多様化に伴
い、日用品など広範な用途に向けて多種類、かつ多量に
用いられ、多量に廃棄されている各種熱可塑性合成樹脂
製品の廃材を再利用して、木質合成板としてリサイクル
するための手段および本発明による木質合成板自体が本
発明によりリサイクル可能な木質合成板を提供する手段
にかかるものである。In particular, one or both of the cellulosic crushed material and the thermoplastic resin molding material are used in a wide range of applications such as construction waste materials, automobiles, household electric appliances, and daily necessities with the diversification of life. A wide variety of, and a large amount of used, a means for reusing waste materials of various thermoplastic synthetic resin products that have been discarded in large quantities and recycling as a wood synthetic board and the wood synthetic board itself according to the present invention The present invention relates to a means for providing a recyclable wood synthetic board.
【０００３】[0003]
【従来の技術】従前から、この種の木粉類をベースとし
た成形樹脂製品の開発は、耐水性、断熱性等を向上する
目的において、種々行われ、特に近年における地球環境
の保全の要請からする森林資源の確保の見地、及び木材
コストの高騰そして、木材製品に対する感覚的な根強い
潜在需要からして、かかる木質合成板の開発が要請され
ている。2. Description of the Related Art Conventionally, molding resin products based on this kind of wood powder have been variously developed for the purpose of improving water resistance, heat insulation, etc., and in particular, there has been a recent demand for preservation of the global environment. From the standpoint of securing forest resources, the soaring cost of timber, and the perceptually strong latent demand for timber products, the development of such wood synthetic boards is required.
【０００４】しかしながら、従来この種の木質合成板の
押出成形においては、セルロース系の破砕物、たとえ
ば、木材を粉砕して得た木粉、籾穀、バカス、破砕チッ
プ材、パルプ材などセルロース系の破砕物を混入し成形
する際に前記セルロース系の破砕物の流動性や、セルロ
ース系破砕物例えば、木粉と樹脂素材の分散性など、木
粉の性質が押出成形時に与える影響が大きいものであっ
た。However, in the conventional extrusion molding of this kind of wood-based synthetic board, a cellulosic crushed material, for example, wood powder obtained by crushing wood, rice grain, bacas, crushed chip material, pulp material, etc. The fluidity of the cellulosic crushed material when mixing and crushing the crushed material, and the crushed material of the cellulose type, such as the dispersibility of the wood powder and the resin material, has a great effect on the properties of the wood powder during extrusion molding. Met.
【０００５】すなわち、これら木粉を始め、セルロース
系破砕物の流動時における摩擦抵抗が大きいことや、樹
脂素材との馴染みが悪いことが、成形された木質合成板
内の木粉の組織を粗密にし密度の不均一を生じさせる原
因となり、また、木粉と樹脂を押出機に充填加熱した場
合、混入木粉から多量の水蒸気ないしは木酸ガスが発生
することが、押出機内壁面の腐食、成形ダイ、成形型等
の損耗をもたらし、また成形された木質合成板自体の表
面の荒れ、気泡、巣等を生じさせる原因となり、押出成
形に種々の問題を生じさせるものであった。That is, the fact that the crushed cellulosic materials such as these wood powders have a large frictional resistance when flowing, and that they are not well compatible with the resin material, make the texture of the wood powders in the molded wood composite board coarse and dense. If the wood powder and resin are filled and heated in the extruder, a large amount of steam or wood acid gas will be generated from the mixed wood powder, which may cause corrosion or molding of the inner wall of the extruder. This causes wear of a die, a molding die, and the like, and also causes roughening of the surface of the molded wooden synthetic board itself, bubbles, cavities, and the like, which causes various problems in extrusion molding.
【０００６】セルロース系破砕物の内、木粉について
は、上述した建築廃材、又製材工程、木工工程の鋸屑な
どの廃材、その他の原料木材をインペラーミルやボール
ミルなどの粉砕機によって衝撃、剪断、摩擦などの作用
により粉砕して得られる木粉は、毛羽立っており、しか
も繊維状に細長い木粉が多数含まれていたり、樹脂素
材、溶剤、溶液に対する分散性が極端に悪く、また木粉
の保管の過程でも凝集を生じやすく、特に樹脂素材に混
入して木質合成板を成形する場合、凝集する欠点を有す
るものであった。そこで、この木粉の角張っている部
分、突き出している部分、繊毛状のヒゲ部分などを粉砕
用ボール間での摩擦による粉砕によって球形あるいは球
形類似の粒状に変形するなどして、比較的流動性や分散
性の良い木粉が成形されている。しかしながら、かよう
な改良された木粉を使用しても、木粉と樹脂素材はそれ
ぞれ流動性が異なるので、木粉が成形時に与える影響が
全く回避されたわけではなく、成形時における木粉の作
用に即応した成形方法を選別することは重要なものであ
った。Among the crushed cellulosic materials, wood powder is impacted, sheared, and crushed by using a crusher such as an impeller mill or a ball mill for the above-mentioned construction waste materials, waste materials such as sawdust in the lumbering process and the woodworking process, and other raw wood. The wood powder obtained by crushing by an action such as rubbing is fluffy and contains many long and narrow fibrous wood powders, and the dispersibility in resin materials, solvents and solutions is extremely poor. Agglomeration is likely to occur even during the storage process, and particularly when mixed with a resin material to form a synthetic wood board, it has a drawback of agglomeration. Therefore, the angular portion, protruding portion, cilia-shaped beard portion, etc. of this wood powder are deformed into spherical or spherical-like particles by crushing due to friction between the crushing balls, so that they are relatively fluid. And wood powder with good dispersibility is molded. However, even if such improved wood flour is used, since the wood flour and the resin material have different fluidities, the effect of wood flour on molding is not completely avoided, and the effect of wood flour on molding is not avoided. It was important to select a molding method that responded to the action.
【０００７】さらに、前述したように流動性や分散性の
点で木粉自体の改良を図ることはさることながら、木質
合成板の成形時における木粉と熱可塑性樹脂成形材との
馴染みを良くし混練状態を良好に維持することは、木粉
に比して摩擦抵抗の小さい熱可塑性樹脂成形材により木
粉の摩擦抵抗を減じて均一で密度の高い木質合成板を成
形するために大きな要素となるものであった。しかしな
がら、従来においては、木粉と熱可塑性樹脂成形材の馴
染みを改善することは依然として課題となっていた。Further, as described above, the wood powder itself is improved in terms of fluidity and dispersibility, and at the same time, the wood powder and the thermoplastic resin molding material are well acclimated to each other during molding of the synthetic wood board. To maintain a good kneading and kneading state is a major factor for forming a uniform and dense wood composite board by reducing the friction resistance of wood powder with a thermoplastic resin molding material that has a smaller friction resistance than wood powder. It was something that However, in the past, it has been a problem to improve the compatibility between the wood powder and the thermoplastic resin molding material.
【０００８】〔従来の木質合成板の成形方法〕従来の木
質合成板の成形方法においては、代表的なものとして以
下に示すようなカレンダー成形法や押出成形法、そし
て、この他にホットプレス成形法がある。[Conventional Method for Forming Wood Synthetic Board] In the conventional method for forming a wood synthetic board, typical examples are the calender molding method and extrusion molding method shown below, and hot press molding. There is a law.
【０００９】〔カレンダー成形法〕木質合成板のカレン
ダー成形法は、例えば、特公平４−７２８３号公報に開
示されるように、押出機のホッパに対しては粒径８０〜
３００メッシュの木粉と熱可塑性樹脂成形材を粉状ある
いはペレット状のものとして直接投入して木粉を熱可塑
性樹脂材料に混入し、これを開放型の押出機で加熱、練
り合わせ、あるいは粒径８０〜３００メッシュの木粉と
熱可塑性樹脂成形材とをブレンダーにおいて充分に混合
した後、これを加圧ニーター、バンバリー等の混練装置
をもって練込み、練込まれた生地をホッパによって押出
機に案内し、図１５に示すようにスクリュー５１をもっ
て成形熱ロール５２の前面に押出し、この押出し成形生
地を加熱しながら前記熱ロール５２をもって所定肉厚に
圧延成形をなすようにしたものであった。開放型の押出
機は、成形ダイを割愛し、単純な押出し開口部５４と
し、この開口部５４に、開口部５４と成形熱ロール５２
間を連絡するガイド５５を設けたものであり、ガイド５
５は受底板と側板から成りそれぞれを電熱ヒータ５６等
の加熱手段をもって充分に加熱するように成し、ガイド
５５の上方に赤外線ヒータ５７を配設したものであっ
た。[Calendar Forming Method] A calender forming method for a wood synthetic board is, for example, as disclosed in Japanese Patent Publication No. 4-7283, for a hopper of an extruder, a grain size of 80 to 80.
300 mesh wood powder and thermoplastic resin molding material are directly added as powder or pellets to mix the wood powder into the thermoplastic resin material, which is heated by an open-type extruder, kneaded, or has a particle size. After thoroughly mixing 80-300 mesh wood powder and a thermoplastic resin molding material in a blender, knead this with a kneading device such as a pressure kneader or Banbury, and guide the kneaded dough to an extruder by a hopper. Then, as shown in FIG. 15, the screw 51 was extruded onto the front surface of the forming hot roll 52, and the extruded dough was heated and roll-formed to a predetermined thickness with the hot roll 52. The open-type extruder omits the forming die and forms a simple extrusion opening 54. In this opening 54, the opening 54 and the forming heat roll 52 are provided.
A guide 55 is provided to connect between the
Reference numeral 5 is composed of a bottom plate and a side plate which are sufficiently heated by heating means such as an electric heater 56, and an infrared heater 57 is arranged above the guide 55.
【００１０】このように熱ロール５２に到る間に保温加
熱する理由は、押出し成形生地の充分な蓄熱状態が欠落
した場合、押出された生地の周辺部分が急速に降下し、
中央部分のみが大幅に熱ロール５２に引き込まれ、その
結果成形された生地にシワヨレをもたらし、さらには成
形品の組織に粗密を生じさせ、反り歪み等の変形の原因
となるので、この原因を回避するためであった。The reason why the heat is kept warm while reaching the heating roll 52 is that when the sufficient heat storage state of the extruded dough is lost, the peripheral portion of the extruded dough rapidly drops,
Only the central portion is drastically pulled by the heat roll 52, resulting in wrinkles in the formed fabric, and further, the texture of the molded product is made coarse and dense, which causes deformation such as warp distortion. It was to avoid it.
【００１１】また、押出し成形生地は熱ロール５２で充
分に転圧、圧延された状態で板状に引出され次いで補正
ロール５３によって転圧時における組織密度の粗密を是
正し、成形板の反りの発生を防止し、さらに、成形板の
表裏面を適宜間隔をおいて交互に押圧する複数のロール
（図示しない）により成形板の反りや撓みを矯正するも
のであった。なお、押出機は単軸又は二軸スクリューを
もって押出すようにしている。Further, the extruded dough is drawn into a plate shape in a state of being sufficiently compacted and rolled by the hot roll 52, and then the correction roll 53 corrects the coarseness and fineness of the tissue density at the time of compaction to prevent the warp of the compacted plate. It is intended to prevent the occurrence and to correct the warp and bending of the forming plate by a plurality of rolls (not shown) which press the front and back surfaces of the forming plate alternately at appropriate intervals. The extruder is a single-screw or twin-screw extruder.
【００１２】〔押出成形法〕従来の木質合成板の押出成
形法においては、例えば、特公平３−５９８０４号公報
に開示されるように、木粉を熱可塑性樹脂成形材に混入
し、押出機によって加熱、練成し、図１６（Ａ）に示す
ように押出機の吐出口に設けた成形ダイ６１を介してチ
ューブ状に押出し成形をなし、この押出し成形生地を、
その生地の押出方向に向けてカッタ等の切断具６２で切
断、拡開して図１６（Ｂ）に示すように平板状の拡開生
地６２を形成する。次いで、前記拡開生地６３を熱ロー
ル６４，６４間に介装、押圧した後、補正ロール６５を
もって押出チューブ形状に復する応力に起因する反り出
しを除去し、さらに、成形板の表裏面を適宜間隔をおい
て交互に押圧する複数のロール６６により成形板の反り
や撓みを矯正するものであった。[Extrusion Molding Method] In the conventional extrusion molding method for a wood-based synthetic board, for example, as disclosed in Japanese Patent Publication No. 3-59804, wood powder is mixed with a thermoplastic resin molding material, and an extruder is used. By heating and kneading, and extruding into a tube shape through a molding die 61 provided at the discharge port of the extruder as shown in FIG. 16 (A).
By cutting and expanding with a cutter 62 such as a cutter in the extrusion direction of the cloth, a flat expanded cloth 62 is formed as shown in FIG. 16 (B). Next, after the expansion material 63 is interposed and pressed between the heat rolls 64, 64, the correction roll 65 is used to remove the warpage due to the stress returning to the shape of the extruded tube. The plurality of rolls 66, which are alternately pressed at appropriate intervals, correct the warpage and bending of the molded plate.
【００１３】[0013]
【発明が解決しようとする課題】前述したように従来に
おいては、木粉と熱可塑性樹脂成形材の馴染みを改善す
ることは依然として課題であった。As described above, it has been a problem in the past to improve the familiarity between the wood powder and the thermoplastic resin molding material.
【００１４】また、木粉と熱可塑性樹脂成形材を粉状あ
るいはペレット状のものとして押出機のホッパに直接投
入し、あるいは木粉と熱可塑性樹脂成形材とをブレンダ
ー、加圧ニーター、バンバリー等の混練装置をもって練
込み、練込まれた生地をホッパによって押出機に案内す
る際、木粉はすでに粒径８０〜３００メッシュに別途破
砕、微粉末化されたものを使用しており、木粉の摩擦抵
抗が与える影響すなわち成形押出し時における焦げつ
き、成形板の組織に粗密を生じさせ、反り歪み等の変形
を生じさせるなどの影響により、大きな粒径の木粉を使
用することはできなかった。しかも、木粉を微粉末化す
るには時間がかかり、一方、木粉を必要以上に微粉末化
すると熱可塑性樹脂成形材との馴染みが悪くなるという
問題点があった。Further, the wood powder and the thermoplastic resin molding material are directly added to the hopper of the extruder in the form of powder or pellets, or the wood powder and the thermoplastic resin molding material are blender, pressure kneader, Banbury, etc. When the kneading device is kneaded and the kneaded dough is guided to the extruder by the hopper, the wood powder has already been crushed and finely divided into particles of 80 to 300 mesh. It was not possible to use wood powder with a large particle size due to the effect of the frictional resistance of the above, that is, charring during molding extrusion, causing the structure of the molded plate to become coarse and dense, and causing deformation such as warpage distortion. . Moreover, it takes time to make the wood powder finer, while if the wood powder is made more finely than necessary, there is a problem that the wood resin becomes less compatible with the thermoplastic resin molding material.
【００１５】従来の木質合成板の成形方法においては、
以下の問題点があった。 〔カレンダー成形法の問題点〕 （１）木粉が流動時における摩擦抵抗が大きいことや、
樹脂素材との馴染みが悪いことに起因する成形時の問題
は、成形ダイを割愛し、開口部５４と熱ロール５２間を
連結するガイド５５を設け且つガイド５５を流動する押
出し成形生地を加熱保温することにより、木粉の流動時
における摩擦抵抗を減じている。さらに、熱ロール５
２，５２間による圧延成形とすることにより、押出機に
よって押出された押出し成形生地が熱ロール５２，５２
間を通過する距離が短くなるため、すなわち押出し成形
生地が熱ロール５２，５２の表面に接触する距離が短く
なるので、結果として木粉と熱ロールとの摩擦を最小限
に押さえることになり、成形された木質合成板の組織が
粗密になることを回避したものである。しかしながら、
カレンダー成形法では、前記押出し成形生地に押圧力が
加わって成形されるのではなく、単に押出し成形生地が
熱ロールの回転に応じて流動し引出されるので木質合成
板を高密度に成形するには限界があった。In the conventional method for molding a wood-based synthetic board,
There were the following problems. [Problems of calender molding method] (1) Large friction resistance when wood powder flows,
The problem at the time of molding due to the unfamiliarity with the resin material is that the molding die is omitted, the guide 55 for connecting the opening 54 and the heat roll 52 is provided, and the extrusion molding dough that flows through the guide 55 is heated and kept warm. By doing so, the frictional resistance when the wood powder flows is reduced. Furthermore, heat roll 5
By performing the roll-forming between 2 and 52, the extruded material extruded by the extruder is heated rolls 52, 52
Since the distance passing through the space becomes short, that is, the distance that the extruded material contacts the surface of the heat rolls 52, 52 becomes short, and as a result, the friction between the wood powder and the heat roll is minimized, This avoids the texture of the molded wood composite board becoming coarse and dense. However,
In the calender molding method, the extrusion molding material is not formed by applying a pressing force, but the extrusion molding material is simply flowed and drawn according to the rotation of the heat roll, so that the synthetic wood board is formed at high density. There was a limit.
【００１６】（２）特公平４−７２８３号公報に示され
たように押出機と熱ロールとをガイドで連結したもので
は、単軸スクリュー５１ないしは二軸スクリューの押出
機に連結するので、ガイドの幅に限界があり幅広の木質
合成板を成形できないという問題点があった。(2) In the case where the extruder and the heat roll are connected by a guide as shown in Japanese Patent Publication No. 4-7283, the guide is connected to the single screw 51 or twin screw extruder. There was a problem that the width of the wood was limited and it was not possible to form a wide wooden synthetic board.
【００１７】（３）熱ロール５２で転圧、圧延され引出
された成形板は、補正ロール５３によって転圧時におけ
る組織密度の粗密を是正され、成形板の反りの発生を防
止し、さらに前記成形板の表裏面を適宜間隔をおいて交
互に押圧する複数のロールにより成形板の反りや撓みを
矯正するので、実際には成形板の反りや歪みを充分に矯
正することは不可能であり、しかも成形板に内部残留応
力を生じさせるものであった。この内部残留応力は成形
後の経年的な収縮ないしは温度変化に伴う膨縮において
成形板に反りやねじれ等の歪みを生じさせる原因となっ
た。また、成形板に二次的な加工を施した場合、例えば
ホットプレス成形法などによりプレス加工を加えた場合
は特にその加工品に予想以上の歪みを生じさせる原因と
なった。(3) The molded plate drawn by rolling and rolling by the hot roll 52 is corrected by the correction roll 53 to correct the density of the tissue density at the time of rolling and prevent the warping of the molded plate. Since the warp and bending of the forming plate are corrected by a plurality of rolls that alternately press the front and back surfaces of the forming plate at appropriate intervals, it is actually impossible to sufficiently correct the warp and distortion of the forming plate. Moreover, it causes internal residual stress in the molded plate. This internal residual stress caused distortion such as warpage and twist in the formed plate due to aging contraction after forming or expansion and contraction due to temperature change. Further, when the molded plate is subjected to secondary processing, for example, when press processing is applied by a hot press molding method or the like, it causes a distortion more than expected in the processed product.
【００１８】（４）カレンダー成形は、他の成形機と違
ってかなり多くの関連設備との組み合せが必要であるの
で、高速で量産性が高いとはいえ、押出成形による生産
設備と比べると、大幅に設備費がかかるという問題点が
あった。(4) Unlike other molding machines, calender molding requires a combination of quite a lot of related equipment, so that although it is high-speed and mass-producible, it has the following advantages: There was a problem that the facility cost was large.
【００１９】〔従来の押出成形法の問題点〕 （１）摩擦抵抗が大きい木粉を多量に混入する成形板を
成形ダイを介して押出機により直接成形することは、押
出時における摩擦抵抗により殆ど不可能とされたもので
あったが、特公平３−５９８０４号公報に示された押出
成形法は、成形ダイが肉厚のチューブ状に素材の押出し
をなすものであるので、成形ダイのダイ出口が円形であ
り、このダイ出口と押出機の吐出口間の流路は比較的短
いので、押出時における摩擦抵抗を極力減じ、円滑且つ
迅速な樹脂の押出成形を意図して前記成形ダイの流路を
形成することができたのであった。しかし、成形ダイよ
り直接、幅広の成形板を成形するＴダイ式の成形ダイを
用いて木質合成板の押出成形をすることは、木粉の摩擦
抵抗が大きいので押出し成形生地を幅広でしかも狭い成
形ダイ内へ比較的長い距離を満遍なく均一に流動させる
ことが極めて難しいという問題点があった。[Problems of Conventional Extrusion Molding Method] (1) Direct molding of a molding plate into which a large amount of wood powder having a large frictional resistance is mixed with an extruder through a molding die is caused by the frictional resistance at the time of extrusion. Although it was almost impossible, in the extrusion molding method disclosed in Japanese Patent Publication No. 3-59804, since the molding die extrudes the material into a thick tube, Since the die outlet is circular and the flow path between the die outlet and the discharge port of the extruder is relatively short, the friction die resistance during extrusion is reduced as much as possible, and the molding die is intended for smooth and rapid extrusion molding of resin. Was able to be formed. However, when a synthetic wood board is extruded using a T-die type molding die that directly forms a wider molding board than the molding die, the friction resistance of the wood powder is large, so the extruded material is wide and narrow. There is a problem that it is extremely difficult to evenly and uniformly flow a relatively long distance into the molding die.
【００２０】（２）特公平３−５９８０４号公報に示さ
れた押出成形法は、拡開生地を成形熱ロール間に介装、
押圧した後、補正ロールをもって押出チューブ形状に復
する応力に起因する反り出しを除去しなければならない
ので、上述したカレンダー成形法と同様に、実際には成
形板の反りや歪みを充分に矯正することは不可能であ
り、成形板に内部残留応力を生じさせるものでり、経年
的な反りやねじれ等の歪みを生じさせ、またホットプレ
ス成形法などのプレス加工において予想以上の歪みを生
じさせる原因となった。(2) In the extrusion molding method disclosed in Japanese Examined Patent Publication No. 3-59804, the expanded material is interposed between the molding hot rolls,
After pressing, it is necessary to remove the warpage due to the stress returning to the extruded tube shape with the correction roll, so in actuality, as in the calender molding method described above, the warpage and distortion of the molded plate are actually corrected sufficiently. It is impossible to do so, and it causes internal residual stress in the formed plate, causes distortion such as warpage and twist over time, and causes unexpected distortion in press working such as hot press molding. It was the cause.
【００２１】（３）特公平３−５９８０４号公報に示さ
れた押出成形法は、押出成形であるとはいえ、上記
（２）項で述べたように補正ロールをもって押出チュー
ブ形状に復する応力に起因する反り出しを除去しなけれ
ばならず、一般の押出成形による生産設備と比べると、
大幅に設備費がかかるという問題点があった。(3) Although the extrusion molding method disclosed in Japanese Patent Publication No. 3-59804 is extrusion molding, as described in the above item (2), the stress returning to the shape of the extruded tube with the correction roll is used. It is necessary to remove the warpage due to, compared with the production equipment by general extrusion molding,
There was a problem that the facility cost was large.
【００２２】（４）特公平３−５９８０４号公報に示さ
れた押出成形法は、押出チューブ形状に成形することと
補正ロールをもって板状に展開して成形することから、
一般の樹脂フィルム等の成形とは異なり木質合成板の成
形であるので、厚肉の板状に成形することは難しいとい
う問題点があった。(4) In the extrusion molding method disclosed in Japanese Patent Publication No. 3-59804, the extrusion tube shape is formed and the correction roll is formed into a plate shape, and therefore,
Unlike the molding of general resin films, etc., since it is the molding of a wood synthetic board, there is a problem that it is difficult to mold it into a thick plate shape.
【００２３】（５）なお、Ｔダイ式の成形ダイを用いて
肉厚１２mmなどの厚肉の木質合成板の押出成形をする
と、成形ダイ内で押出し成形生地の流動状態が悪くな
り、成形板の密度が不均一になり、ついには成形板が波
打ちあるいは不定形にくずれ、製品とはならないものに
なるという問題点があった。(5) When a T-die type molding die is used to extrude a thick wood synthetic board having a thickness of 12 mm, the flow condition of the extruded dough in the molding die is deteriorated and the formed board is However, there is a problem in that the density becomes uneven, and the molded plate eventually becomes wavy or deforms into an irregular shape, and cannot be a product.
【００２４】（６）Ｔダイ式の成形ダイを用いて木質合
成板の押出成形をしたところ、通常の木質合成板はねず
み色であるが成形ダイ内に設けたヒータの熱で押出し成
形生地内の木粉が焼けるためこげ茶色に変色するので、
外観上の問題もさることながら木粉が焼けることから耐
衝撃性など品質・特性の低下を来すという問題点があっ
た。(6) When a wooden synthetic board was extrusion-molded using a T-die type molding die, although the ordinary wooden synthetic board had a gray color, the heat of the heater provided in the molding die caused the inside of the extruded cloth to be removed. As the wood powder burns, it turns dark brown,
There was a problem in that quality and characteristics such as impact resistance were deteriorated because wood powder was burnt as well as appearance problems.
【００２５】本発明は叙上の問題点を解決するために開
発されたもので、熱可塑性樹脂成形材が熱的、化学的に
安定した木粉粒に固定化された状態を定常的に維持し得
るようにして木粉と熱可塑性樹脂成形材との混合、分散
状態を定常的に維持すべく、良好なる流動性を与える木
質合成粉と、当該木質合成粉の製造方法並びに装置を提
供し、さらに前記木質合成粉を用いて押出成形時、木粉
と樹脂との馴染みを良好に保ち、木粉周辺に、気泡、巣
等の発生を抑え、木粉間の密度を均一でしかも高密度な
薄板から厚板の広範囲に及ぶ肉厚を有する木質合成板並
びに当該木質合成板の押出成形方法を提供し、特に、１
０mm以上の肉厚を有する木質合成板並びに当該木質合成
板を成形する押出成形方法及びその装置を提供すること
を目的とする。また、内部残留応力が少ない幅広の木質
合成板を成形する押出成形方法及びその装置を提供する
ことを目的とする。The present invention was developed in order to solve the above problems, and constantly maintains a state in which a thermoplastic resin molding material is immobilized on thermally and chemically stable wood powder particles. In order to constantly maintain the mixed state and dispersed state of the wood powder and the thermoplastic resin molding material in such a manner that it is possible to provide a synthetic wood powder having good fluidity, and a method and an apparatus for manufacturing the synthetic wood powder. Furthermore, during extrusion molding using the above-mentioned synthetic wood powder, the familiarity between the wood powder and the resin is kept good, the generation of air bubbles, nests, etc. are suppressed around the wood powder, and the density between wood powders is uniform and high. A wood synthetic board having a wide range of thicknesses from thin to thick boards and an extrusion molding method of the wood synthetic board are provided.
An object of the present invention is to provide a wood synthetic board having a wall thickness of 0 mm or more, and an extrusion molding method and apparatus for molding the wood synthetic board. It is another object of the present invention to provide an extrusion molding method and apparatus for molding a wide wooden synthetic board having a small internal residual stress.
【００２６】[0026]
【課題を解決するための手段】上記目的を達成するため
に、本発明の木質合成粉は、含有水分量を１５wt％以内
とし平均粒径２０メッシュ以下のセルロース系破砕物２
０〜７５wt％に対して熱可塑性樹脂成形材２５〜８０wt
％を混合、ゲル化混練し、冷却粉砕して粒径１０mm以下
に整粒して成ることを特徴とする（請求項１） 又、上記木質合成粉の製造方法としては、含有水分量を
１５wt％以内とし平均粒径２０メッシュ以下のセルロー
ス系破砕物２０〜７５wt％に対して熱可塑性樹脂成形材
２５〜８０wt％をともに攪拌衝撃翼により混合して、摩
擦熱によりゲル化混練し、次いで冷却し、粉砕して粒径
１０mm以下に整粒する工程を少なくとも含むことを特徴
とする（請求項２）。さらに、上記木質合成粉の製造装
置としては、含有水分量を１５wt％以内とし平均粒径２
０メッシュ以下のセルロース系破砕物２０〜７５wt％に
対して熱可塑性樹脂成形材２５〜８０wt％をともに混合
して、摩擦熱によりゲル化混練する攪拌衝撃翼を備える
流動混合混練手段と、上記ゲル化した混練材料を冷却造
粒する内部に攪拌破砕翼を有し、ジャケットに冷却水の
入口および出口を備える冷却造粒手段と、上記冷却造粒
した造粒木粉を粒径１０mm以下に整粒する整粒手段とか
ら成ることを特徴とする（請求項３）。In order to achieve the above object, the woody synthetic powder of the present invention has a water content of 15 wt% or less and an average particle size of 20 mesh or less cellulosic crushed material 2.
Thermoplastic molding material 25-80 wt% for 0-75 wt%
%, Mixed by gelling, cooled and pulverized, and sized to a particle size of 10 mm or less (claim 1). Further, as a method for producing the above-mentioned synthetic wood powder, the water content is 15 wt. % To 20% to 75% by weight of a cellulosic crushed material having an average particle size of 20 mesh or less, 25% to 80% by weight of a thermoplastic resin molding material is mixed together by a stirring impact blade, kneaded by gelation by frictional heat, and then cooled. Then, at least the step of pulverizing and sizing to a particle size of 10 mm or less is included (claim 2). Further, the above-mentioned wood-based synthetic powder manufacturing apparatus has a water content of 15 wt% or less and an average particle size of 2
A fluid mixing and kneading means having a stirring and impacting blade for mixing 25 to 80 wt% of a thermoplastic resin molding material with 20 to 75 wt% of a cellulosic crushed material of 0 mesh or less and gelling and kneading by friction heat, and the above gel. Cooling granulation means for cooling and granulating the compounded kneaded material has a stirring and crushing blade, and a jacket has an inlet and an outlet for cooling water, and the cooled and granulated wood powder is adjusted to a particle diameter of 10 mm or less. It is characterized by comprising a sizing means for granulating (claim 3).
【００２７】又、上記木質合成粉を加熱、練成し、スク
リューをもって成形ダイへ押出した押出し生地を徐冷
し、且つ、この押出し生地に押出し力に抗する抑制力を
加えて押出し生地の密度を高くして成ることを特徴とす
る木質合成板を得ることを特徴とする（請求項４）。
又、上記木質合成板の製造方法にあっては、含有水分量
を１５wt％以内とし平均粒径２０メッシュ以下のセルロ
ース系破砕物２０〜７５wt％に対して熱可塑性樹脂成形
材２５〜８０wt％をともに攪拌衝撃翼により混合して、
摩擦熱によりゲル化混練し、次いで冷却し、粉砕して粒
径１０mm以下に整粒形成した木質合成粉を加熱、練成
し、スクリューをもって成形ダイへ押出した押出し生地
を徐冷し、且つ、この押出し生地に押出し力に抗する抑
制力を加えて押出し生地の密度を高くする工程を少なく
とも含むことを特徴とする（請求項５）。さらに、本発
明の木質合成板の押出成形方法においては、セルロース
系破砕物を、例えば木粉を熱可塑性樹脂成形材に２０〜
７５wt％好ましくは３０〜７０wt％相当混入し、加熱、
練成し、スクリューをもって成形ダイ１０へ押出し、こ
の押出し生地７９を、内壁面にポリフルトルエチレン
（本明細書において、単に「フッ素樹脂」という。）の
シート２４を貼設又はフッ素樹脂をコーティングした成
形ダイ１０の成形部２１へ押出して所定の肉厚に成形し
且つ前記成形部２１で徐冷して押出し成形したものであ
る（請求項６）。The extruded dough extruded into the molding die by heating and kneading the above-mentioned synthetic wood powder is gradually cooled, and the extruded dough is restrained against the extruding force to obtain the density of the extruded dough. It is characterized in that a wood-based synthetic board characterized by being made higher is obtained (claim 4).
Further, in the above-mentioned method for producing a wooden synthetic board, the content of water is set to within 15 wt% and the thermoplastic resin molding material is added in an amount of 25 to 80 wt% with respect to 20 to 75 wt% of the cellulosic crushed material having an average particle size of 20 mesh or less. Both are mixed by stirring impact blades,
Gel-kneading and kneading by frictional heat, then cooling, crushing, heating and kneading wood-based synthetic powder that has been sized to a particle size of 10 mm or less, and the extruded dough extruded into a molding die with a screw is gradually cooled, and At least a step of increasing the density of the extruded dough by applying a suppressing force against the extruded dough to the extruded dough (claim 5). Furthermore, in the extrusion molding method of a wood-based synthetic board of the present invention, a crushed cellulosic material, for example, wood powder is used as a thermoplastic resin molding material in an amount of 20 to 20.
75% by weight, preferably 30 to 70% by weight, mixed and heated,
The mixture is kneaded and extruded into a molding die 10 with a screw, and the extruded material 79 is stuck or coated with a sheet 24 of polyflutolethylene (herein, simply referred to as "fluorine resin") on the inner wall surface. It is extruded into the molding portion 21 of the molding die 10 to be molded into a predetermined wall thickness, and is gradually cooled in the molding portion 21 and extruded (claim 6).
【００２８】なお、熱可塑性樹脂成形材はＰＶＣ（ポリ
塩化ビニル）、ＰＥＴ（ポリエステル）、ＰＰ（ポリプ
ロピレン）等の樹脂で、廃棄樹脂成形品から回収したプ
ラスッチクを全部、あるいはこれらの回収樹脂にバージ
ンのプラスチックペレットを半量づつ混合して用いるこ
ともあり、これら熱可塑性樹脂成形材とセルロース系の
破砕物の混合割合は、 (1) 熱可塑性樹脂成形材がＰＰの場合、前記セルロース
系の破砕物は最大で７５wt％まで混入され、セルロース
系の破砕物を混入する割合の範囲は２０〜７５wt％好ま
しくは３０〜７０wt％相当であるが、好ましくは３０〜
６５wt％である。 (2) 熱可塑性樹脂成形材がＰＥＴの場合、セルロース系
の破砕物は最大で７５wt％まで混入され、セルロース系
の破砕物の混入割合は２０〜６０wt％が良い。好ましく
は３５〜５０wt％である。 (3) 熱可塑性樹脂成形材がＰＶＣのとき、木粉の混入
割合は３０〜６０wt％、好ましくは４５wt％である。The thermoplastic resin molding material is a resin such as PVC (polyvinyl chloride), PET (polyester), PP (polypropylene), etc., and all the plastic collected from the waste resin molded product, or virgin resin to these collected resins. The plastic pellets may be used in a mixture of half amount, and the mixing ratio of the thermoplastic resin molding material and the cellulosic crushed material is (1) when the thermoplastic resin molding material is PP, the cellulose crushed material Is mixed up to 75 wt% at the maximum, and the range of the ratio of crushed cellulosic material is 20 to 75 wt%, preferably 30 to 70 wt%, but preferably 30 to 70 wt%.
It is 65 wt%. (2) When the thermoplastic resin molding material is PET, the cellulosic crushed material is mixed up to 75 wt% at the maximum, and the mixing ratio of the cellulosic crushed material is preferably 20 to 60 wt%. It is preferably 35 to 50 wt%. (3) When the thermoplastic resin molding material is PVC, the mixing ratio of wood powder is 30 to 60% by weight, preferably 45% by weight.
【００２９】また、本発明の木質合成板の他の押出成形
方法においては、セルロース系の破砕物例えば木粉を熱
可塑性樹脂成形材に２０〜７５wt％好ましくは３０〜７
０wt％相当混入し、加熱、練成し、スクリューをもって
成形ダイ１０へ押出し、この押出し生地７９を、内壁面
にフッ素樹脂のシート２４を貼設又はフッ素樹脂をコー
ティングした成形ダイ１０の成形部２１へ押出して所定
の肉厚に成形し且つ前記成形部で徐冷して押出し成形す
ると共に、押出機により加えられる成形板２９への押出
し力に、ブレーキ手段３０により抑制力を加え、この成
形板２９を介して成形室２２内の押出し生地７９に対し
て前記押出し力に対する抗力を与えることにより、前記
成形部２１内の押出し生地７９の密度を高くしたもので
ある（請求項７）。In another extrusion molding method of the present invention, the crushed cellulosic material such as wood powder is used as the thermoplastic resin molding material in an amount of 20 to 75 wt%, preferably 30 to 7%.
A mixture of 0 wt% is mixed, heated, kneaded, extruded with a screw into the molding die 10, and the extruded cloth 79 is formed with the fluororesin sheet 24 attached to the inner wall surface or coated with the fluororesin. Is extruded into a predetermined thickness and gradually cooled in the forming part to be extruded, and the extruding force applied to the forming plate 29 by the extruder is restrained by the brake means 30. The density of the extruded dough 79 in the forming section 21 is increased by applying a resistance force to the extruded dough 79 in the forming chamber 22 via 29 to prevent the extruding dough 79 from being formed (claim 7).
【００３０】また、前記押出し生地７９を成形ダイ１０
の導入部１１で加熱して成形ダイ１０の成形部２１へ押
出すことができる（請求項８）。The extruded material 79 is formed into a molding die 10
It can be extruded into the molding section 21 of the molding die 10 by heating it in the introduction section 11 of the above (claim 8).
【００３１】本発明の木質合成板の押出成形装置におい
ては、セルロース系破砕物を熱可塑性樹脂成形材に２０
〜７５wt％好ましくは３０〜７０wt％相当混入し、加
熱、練成し、スクリューをもって押出す押出機の押出ダ
イ７８に、前記押出ダイ７８より吐出された押出し生地
７９を加熱する導入部１１と、この導入部１１から押出
された押出し生地７９を所定の肉厚に成形する成形室２
２を備えた成形部２１から成る成形ダイ１０を連結す
る。さらに、前記成形部２１の内壁面にフッ素樹脂のシ
ート２４を貼設又はフッ素樹脂をコーティングし且つ成
形室２２を冷却する冷却手段を成形ダイ１０に設けたも
のである（請求項９）。In the extrusion molding apparatus for a wood-based synthetic board of the present invention, a crushed cellulosic material is used as a thermoplastic resin molding material.
˜75 wt%, preferably 30 to 70 wt%, mixed, heated, kneaded, and introduced into an extrusion die 78 of an extruder for extruding with a screw, and an introduction section 11 for heating the extruded dough 79 discharged from the extrusion die 78, Molding chamber 2 for molding the extruded dough 79 extruded from the introduction portion 11 to a predetermined thickness
The molding die 10 consisting of the molding part 21 provided with 2 is connected. Further, the molding die 10 is provided with a cooling means for sticking or coating a fluororesin sheet 24 on the inner wall surface of the molding part 21 and for cooling the molding chamber 22 (claim 9).
【００３２】又、上記木質合成板の押出成形装置として
は、含有水分量を１５wt％以内とし平均粒径２０メッシ
ュ以下のセルロース系破砕物２０〜７５wt％に対して熱
可塑性樹脂成形材２５〜８０wt％をともに混合して、摩
擦熱によりゲル化混練する攪拌衝撃翼を備える流動混合
混練手段と、上記ゲル化した混練材料を冷却造粒する内
部に攪拌破砕翼を有し、ジャケットに冷却水の入口およ
び出口を備える冷却造粒手段と、上記冷却造粒した造粒
木粉を粒径１０mm以下に整粒し、木質合成粉を得る整粒
手段と、前記木質合成粉を加熱、練成し、スクリューを
もって押出す押出機の押出ダイに、前記押出ダイより吐
出された押出し生地を加熱する導入部と、この導入部か
ら押出された押出し生地を所定の肉厚に成形する成形室
を備えた成形部から成る成形ダイを連結すると共に、前
記成形部の内壁面にフッ素樹脂のシートを貼設又はフッ
素樹脂をコーティングし且つ成形室を冷却する冷却手段
を成形ダイに設けたことを特徴とする（請求項１０）。As an extrusion molding device for the above-mentioned synthetic wood board, a thermoplastic resin molding material of 25 to 80 wt% is used for 20 to 75 wt% of a cellulosic crushed material having a water content of 15 wt% or less and an average particle size of 20 mesh or less. %, The fluidized mixing and kneading means having a stirring impact blade for gelling and kneading by frictional heat, and a stirring and crushing blade for cooling and granulating the gelled kneaded material have a cooling water in a jacket. Cooling and granulating means having an inlet and an outlet, sizing means for sizing the cooled and granulated granulated wood powder to a particle size of 10 mm or less, and heating and kneading the wood-based synthetic powder. The extruder die for extruding with a screw is provided with an introducing section for heating the extruded dough discharged from the extruding die, and a molding chamber for extruding the extruded dough extruded from the introducing section into a predetermined wall thickness. From molding section The molding die is connected to the molding die, and a fluorocarbon resin sheet is attached to the inner wall surface of the molding part or a cooling means for coating the fluorocarbon resin and cooling the molding chamber is provided in the molding die (claim) 10).
【００３３】尚、上記木質合成粉、木質合成粉の製造方
法、木質合成粉の製造装置、木質合成板、木質合成板の
押出成形方法又は木質合成板の押出成形装置においてセ
ルロース系の破砕物として木粉６０〜７５wt％と熱可塑
性樹脂成形材としてポリプロピレン又はポリエチレン２
５〜４０wt％を混入することが好ましい。In the above synthetic wood powder, the method for producing synthetic wood powder, the apparatus for producing synthetic wood powder, the synthetic wood board, the method for extruding a synthetic wood board or the extruding machine for synthetic wood board, as a cellulosic crushed material. 60-75 wt% wood powder and polypropylene or polyethylene as a thermoplastic resin molding material 2
It is preferable to mix 5 to 40 wt%.
【００３４】同様に、セルロース系の破砕物として木粉
６０〜６５wt％と熱可塑性樹脂成形材としてポリカーボ
ネイト、ナイロン、又はＰＶＣの内一種または数種の混
合で３５〜４０wt％を混入することが好ましい。Similarly, it is preferable to mix 60 to 65 wt% of wood powder as a cellulosic crushed product and 35 to 40 wt% by mixing one or more of polycarbonate, nylon, or PVC as a thermoplastic resin molding material. .
【００３５】さらに、上記木質合成粉の製造方法、木質
合成粉の製造装置、木質合成板の押出成形方法又は木質
合成板の押出成形装置において、４０％濃度の尿素水溶
液をセルロース系破砕物に対して１wt％混入することが
木酸ガスの中和効果の点から好ましい。Further, in the above-mentioned method for producing a synthetic wood powder, a production apparatus for a synthetic wood powder, a method for extruding a synthetic wood board or an apparatus for extruding a synthetic wood board, an aqueous urea solution having a concentration of 40% is added to a cellulosic crushed product. It is preferable that 1 wt% is mixed from the viewpoint of neutralizing effect of wood acid gas.
【００３６】加えて、炭酸カルシウム又は酸化チタンを
セルロース系破砕物及び熱可塑性樹脂成形材に対して５
〜２０wt％混入することが剪断力を高めるために好まし
い。In addition, calcium carbonate or titanium oxide is added to the cellulosic crushed product and the thermoplastic resin molding material in an amount of 5
It is preferable that the content is ˜20 wt% to increase the shearing force.
【００３７】さらに、前記木質合成粉の製造方法又は装
置そして、この木質合成粉による木質合成板の製造方法
及び装置において、前記セルロース系破砕物を攪拌衝撃
翼により攪拌・混合して、摩擦熱により乾燥し、次い
で、このセルロース系破砕物に、熱可塑性樹脂成形材を
攪拌衝撃翼により混合して、摩擦熱によりゲル化混練
し、次いで冷却、粉砕して粒径１０mm以下に整粒する工
程とすることができる（請求項１１、１２）。Further, in the method or apparatus for producing the synthetic wood powder and the method and apparatus for producing a synthetic wood board using the synthetic wood powder, the cellulosic crushed materials are stirred and mixed by a stirring impact blade, and are heated by friction heat. Drying, and then mixing the cellulose-based crushed product with a thermoplastic resin molding material by a stirring impact blade, kneading by gelation by frictional heat, cooling, crushing and sizing to a particle size of 10 mm or less, It is possible (claims 11 and 12).
【００３８】また、前記押出機の押出ダイより吐出され
た押出し生地を加熱する前記成形ダイの導入部に該導入
部の幅方向の全長の７０〜９５％の全長を有し、且つ該
導入部の高さの７０％以下の高さの案内板を設けること
ができる（請求項１３）。Further, the introduction portion of the molding die for heating the extruded material discharged from the extrusion die of the extruder has a total length of 70 to 95% of the total length in the width direction of the introduction portion, and the introduction portion. It is possible to provide a guide plate having a height of 70% or less of the height (claim 13).
【００３９】また、前記案内板の表面にフッ素樹脂のシ
ートを貼設又はフッ素樹脂をコーティングすることがで
きる。（請求項１４）。Further, a fluororesin sheet may be attached to or coated with the fluororesin on the surface of the guide plate. (Claim 14).
【００４０】なお、前記フッ素樹脂にはポリ四フッ化エ
チレン（テフロンＴＦＥ；デュポン社）、フッ化エチレ
ン−プロピレンコポリマ（テフロンＦＥＰ）、ポリ三フ
ッ化塩化エチレン（テフロンＣＴＦＥ）、ポリフッ化ビ
ニリデン（テフロンＶｄＦ）等を用いることができる。The above-mentioned fluororesin includes polytetrafluoroethylene (Teflon TFE; DuPont), fluoroethylene-propylene copolymer (Teflon FEP), polytrifluoroethylene chloride (Teflon CTFE), polyvinylidene fluoride (Teflon). VdF) or the like can be used.
【００４１】なお、前記成形室２２の内壁面及び前記案
内板の表面のフッ素樹脂によるコーティング方法は、特
に、交換が容易であり、加工が容易であるので耐久性に
優れているという点で、ガラス織布の表面にフッ素樹脂
のフィルムをコーティングしたシート２４を貼設するこ
とが好ましい。また、前記ガラス織布はガラス繊維の不
織布でもよい。The method of coating the inner wall surface of the molding chamber 22 and the surface of the guide plate with a fluororesin is particularly easy to replace and easy to process, and thus has excellent durability. It is preferable to stick a sheet 24 coated with a fluororesin film on the surface of the woven glass cloth. Further, the glass woven fabric may be a non-woven fabric of glass fiber.
【００４２】また、前記成形室２２の内壁面のフッ素樹
脂によるコーティングは、成形板の表裏面を形成する面
に相当する成形室２２の内壁面に施すことができるが、
成形室２２の上下左右の内壁面全体にフッ素樹脂の加工
を施すことが望ましい。The coating of the inner wall surface of the molding chamber 22 with the fluororesin can be applied to the inner wall surface of the molding chamber 22 corresponding to the surfaces forming the front and back surfaces of the molding plate.
It is desirable that the entire upper, lower, left and right inner wall surfaces of the molding chamber 22 be processed with fluororesin.
【００４３】また、成形室２２を冷却する冷却手段は、
成形室２２の周囲の成形ダイ１０内に冷却水を循環する
冷却管２５を配管することができるが、成形室２２内の
押出し生地７９の徐冷効果を向上するという点で、成形
部２１の押出し方向に向けて冷却管２５の間隔を次第に
狭くするように設けるとよい。しかしながら、この構造
に限定されるものではない。The cooling means for cooling the molding chamber 22 is
A cooling pipe 25 that circulates cooling water can be provided in the molding die 10 around the molding chamber 22, but in order to improve the gradual cooling effect of the extruded dough 79 in the molding chamber 22, the molding unit 21 of the molding unit 21 is improved. It is advisable to provide the cooling pipes 25 such that the intervals between the cooling pipes 25 gradually decrease in the extrusion direction. However, the structure is not limited to this.
【００４４】本発明の木質合成板の他の押出成形装置に
おいては、セルロース系破砕物例えば木粉を熱可塑性樹
脂成形材に２０〜７５wt％好ましくは３０〜７０wt％相
当混入し、加熱、練成し、スクリューをもって押出す押
出機の押出ダイ７８に、前記押出ダイ７８より吐出され
た押出し生地７９を加熱する導入部１１と、この導入部
１１から押出された押出し生地７９を所定の肉厚に成形
する成形室２２を備えた成形部２１から成る成形ダイ１
０を連結する。さらに、前記成形部２１の内壁面にフッ
素樹脂のシート２４を貼設又はフッ素樹脂をコーティン
グし且つ成形室２２を冷却する冷却手段を成形ダイ１０
に設ける。さらに、前記成形ダイ１０より押出された成
形板２９の押出し力に抗する抑制力を加えるブレーキ手
段３０を設けたものである。In another extrusion molding apparatus of the woody synthetic board of the present invention, a crushed cellulosic material such as wood powder is mixed in a thermoplastic resin molding material in an amount of 20 to 75% by weight, preferably 30 to 70% by weight, and the mixture is heated and kneaded. Then, the introduction die 11 for heating the extrusion dough 79 discharged from the extrusion die 78 to the extrusion die 78 of the extruder for extruding with the screw, and the extrusion dough 79 extruded from the introduction portion 11 to have a predetermined wall thickness. Molding die 1 comprising a molding part 21 having a molding chamber 22 for molding
Connect 0. Further, the molding die 10 is provided with a cooling means for sticking or coating the fluororesin sheet 24 on the inner wall surface of the molding part 21 and for cooling the molding chamber 22.
To be installed. Further, a braking means 30 for applying a restraining force against the pushing force of the molding plate 29 extruded from the molding die 10 is provided.
【００４５】さらに、前記成形ダイより押出された成形
板の押出し力に抗する抑制力を加えるブレーキ手段を設
けることができる（請求項１５）。Further, it is possible to provide braking means for applying a restraining force against the pushing force of the molding plate extruded from the molding die (claim 15).
【００４６】なお、前記ブレーキ手段３０は、成形板２
９の表裏面を挟持して圧接する一対を成すピンチローラ
３１を設け、このピンチローラ３１の軸端にブレーキド
ラム３３を設け、このブレーキドラム３３の回転を抑制
するブレーキベルト３５などの摩擦体を前記ブレーキド
ラム３３に圧接する構成とすることができる（請求項１
６）。The braking means 30 is used for the molding plate 2
A pair of pinch rollers 31 that sandwich and press-contact the front and back surfaces of 9 are provided, a brake drum 33 is provided at the shaft end of the pinch roller 31, and a friction body such as a brake belt 35 that suppresses rotation of the brake drum 33 is provided. The brake drum 33 may be in pressure contact with the brake drum 33 (claim 1).
6).
【００４７】また、前記ブレーキ手段は、成形板の表裏
面を挟持して圧接する上下一対を成すピンチローラを複
数対設け、上部のピンチローラの両軸端に前記ピンチロ
ーラを回転自在にエアシリンダのロッド先端を連結し、
成形板を介して下部のピンチローラに対して押圧力を調
整自在に設けることができる（請求項１７）。Further, the brake means is provided with a plurality of pairs of upper and lower pinch rollers which sandwich and press-contact the front and back surfaces of the forming plate, and the pinch rollers are rotatably provided at both shaft ends of the upper pinch roller. Connect the rod ends of
It is possible to adjust the pressing force to the lower pinch roller via the forming plate in an adjustable manner (claim 17).
【００４８】さらに、前記ブレーキ手段は、成形板の表
裏面を挟持して圧接する上下一対を成すピンチローラを
複数対設け、一のピンチローラの軸端をパウダブレーキ
の入力軸に連結すると共に、各ピンチローラの軸端に設
けた歯車を噛合せしめたものとすることができる（請求
項１８）。Further, the braking means is provided with a plurality of pairs of upper and lower pinch rollers that sandwich and press-contact the front and back surfaces of the molded plate, and connect the shaft end of one pinch roller to the input shaft of the powder brake. Gears provided at the shaft ends of the pinch rollers may be meshed with each other (claim 18).
【００４９】また、前記ブレーキ手段３０は、成形板２
９の幅方向全長に及ぶ長さのゴムや樹脂などの弾性体で
なるブレーキ板を、成形板２９の表裏面に圧接すること
もできる。さらに、必要に応じて前記ブレーキ手段３０
を複数設けることができる。Further, the braking means 30 is the molding plate 2
It is also possible to press the brake plates made of an elastic material such as rubber or resin having a length extending over the entire width of 9 to the front and back surfaces of the molding plate 29. Furthermore, if necessary, the braking means 30
It is possible to provide a plurality of.
【００５０】さらに、前記導入部には、成形ダイ内に成
形ダイ幅方向に形成され、縦断面が楕円形に膨出形成さ
れた導入孔を形成する。Further, at the introduction portion, an introduction hole is formed in the molding die in the width direction of the molding die, the introduction hole being bulged to have an elliptical longitudinal section.
【００５１】また、前記導入部には成形ダイ幅方向に湾
曲し、両端が成形室入口長手方向の両端に及ぶコート・
ハンガー型に形成し、且つ、前記導入孔から成形室入口
間は、成形室に向かって縦断面が徐々に狭くなる方向に
断面三角形を成す導入室を形成する。In addition, the introduction portion is coated with a coating which is curved in the width direction of the molding die and has both ends extending to both ends in the longitudinal direction of the molding chamber inlet.
An introduction chamber is formed in a hanger shape and has a triangular cross section in a direction in which the vertical cross section gradually narrows toward the molding chamber from the introduction hole to the molding chamber inlet.
【００５２】さらに、 前記一の押出機の押出ダイに、
二の成形ダイを連通するよう設け、生産能力の向上を図
ることができる。Further, in the extrusion die of the one extruder,
The second molding die can be provided so as to communicate with each other to improve the production capacity.
【００５３】前記押出機の押出ダイは、成形ダイの成形
部の成形室の高さと同等ないしは７０％の高さを有する
方形の射出口を形成し、この射出口に向けて徐々に狭く
断面変化するよう形成することができる。The extrusion die of the extruder forms a rectangular injection port having a height equal to or 70% of the height of the molding chamber of the molding section of the molding die, and the cross-section gradually narrows toward this injection port. Can be formed.
【００５４】尚、上記熱可塑性樹脂成形材は、上述した
ものなどの樹脂で、一種又はこれらの内数種を混合して
用いることもできることは言うまでもない。Needless to say, the above-mentioned thermoplastic resin molding material may be a resin such as those mentioned above, or may be used alone or as a mixture of several kinds thereof.
【００５５】[0055]
【作用】上記木質合成粉は、木粉の粒径を熱可塑性樹脂
成形材とのなじみを良好とし、ゲル化混練及び成形押し
出し時における木粉の摩擦抵抗を減じ成形機の損耗、毀
損の防止を図るため、平均粒径２０メッシュ以下とする
顆粒ないし粉末状とし、ゲル化混練及び成形時における
木酸ガスを揮散し、水蒸気あるいは気泡発生を減少し、
表面の肌荒れを防止する意図からその含有水分量を１５
wt％以内、好ましくは１１wt％以内、理想的には８wt％
の範囲内とするものである。[Function] The above wood synthetic powder makes the grain size of the wood powder fit well with the thermoplastic resin molding material, reduces the friction resistance of the wood powder during gelation kneading and molding extrusion, and prevents wear and damage of the molding machine. In order to achieve the above, granules or powders having an average particle size of 20 mesh or less are vaporized to volatilize wood acid gas during gelation kneading and molding to reduce generation of water vapor or bubbles,
The amount of water contained is 15 to prevent surface roughening.
Within wt%, preferably within 11 wt%, ideally 8 wt%
Within the range of.
【００５６】原材料の全体の２０〜７５wt％好ましくは
３０〜７０wt％相当より好ましくは、３５〜６５wt％の
セルロース系破砕物例えば木粉と残りの熱可塑性樹脂成
形材とする配合は、木粉が２０％以下となると、流動混
合混練手段において、熱可塑性樹脂成形材との混合によ
り、被混練材料たる上記混合物が大きな塊となって固化
し、ゲル化しないためであり、１０mm以下に整粒するの
は、成形押し出し時における焦げつきを防止し、また、
木質合成粉の摩擦抵抗を減じ成形機の損耗、毀損の防止
を図るためである。20 to 75 wt% of the total raw material, preferably 30 to 70 wt%, more preferably 35 to 65 wt% of cellulosic crushed material such as wood powder and the remaining thermoplastic resin molding material When the content is 20% or less, the mixture as the material to be kneaded becomes a large lump and is not solidified by the mixing with the thermoplastic resin molding material in the fluidized mixing and kneading means and does not gel, and the particle size is adjusted to 10 mm or less. Prevents burning when molding and extruding,
This is to reduce the frictional resistance of the synthetic wood powder and prevent the wear and tear of the molding machine.
【００５７】上記流動混合混練手段において、セルロー
ス系破砕物例えば木粉は、攪拌衝撃翼により破砕、且
つ、攪拌衝撃翼及び原料自体の摩擦熱により乾燥され、
含有水分が０．３％程度まで乾燥され、また熱可塑性樹
脂成形材は、攪拌衝撃翼により前記セルロース系破砕物
と混練され、原料自体の摩擦熱により約１８０〜２００
°Ｃで混合分散に際しても凝集したりせずに混練されゲ
ル化し、且つ含有水分が約０．３wt％に乾燥され、つい
で、冷却造粒手段によりジャケット内の混練材料は、前
記原材料中の熱可塑性樹脂成形材の凝固点すなわち融点
近傍（融点＋１０°Ｃ）まで冷却されながら乾燥され、
攪拌破砕翼により粒径２５mm程度以下に造粒されて固化
させた造粒木粉を得る。In the fluid mixing and kneading means, the cellulosic crushed material such as wood powder is crushed by the stirring impact blade and dried by the friction heat of the stirring impact blade and the raw material itself.
The water content is dried to about 0.3%, and the thermoplastic resin molding material is kneaded with the cellulosic crushed material by a stirring impact blade, and the frictional heat of the raw material itself gives about 180 to 200.
The mixture is kneaded and gelled without being agglomerated even at the time of mixing and dispersion at ° C, and the water content is dried to about 0.3 wt%. Then, the kneading material in the jacket is cooled by the granulating means so that The plastic resin molding material is dried while being cooled to the freezing point, that is, near the melting point (melting point + 10 ° C),
Granulated wood powder is obtained by granulating with a stirring and crushing blade to a particle size of about 25 mm or less and solidifying.
【００５８】さらに、前記造粒木粉は、例えば８mmのス
クリーンを有するカッターミル等の粉砕機から成る整粒
手段により、粒径（短径）１０mm以下、好ましくは、３
〜５mmの米粒大の木質合成粉を得る。以上のようにして
いわゆる熱可塑性樹脂成形材が熱的、化学的に安定した
木粉粒に固定化された状態を定常的に維持し得るように
して木粉と熱可塑性樹脂成形材との混合、分散状態を定
常的に維持すべく、良好なる流動性を与える木質合成粉
が形成され、且つ冷却による凝縮、縮小作用とも相まっ
て、化学的な反応とか接着によらない木質合成粉が形成
される。Further, the granulated wood powder is sized by a sizing means consisting of a crusher such as a cutter mill having a screen of 8 mm, and the particle size (minor axis) is 10 mm or less, preferably 3 mm.
~ 5mm rice grain size synthetic wood powder is obtained. As described above, the so-called thermoplastic resin molding material is mixed with the wood powder and the thermoplastic resin molding material so that the thermally and chemically stable state of being fixed to the wood powder grain can be constantly maintained. , A synthetic wood powder that gives good fluidity is formed in order to maintain the dispersed state constantly, and combined with the condensation and shrinking action by cooling, a synthetic wood powder that is not caused by a chemical reaction or adhesion is formed. .
【００５９】そして、この木質合成粉は、押出機で加
熱、混練されスクリューで押出ダイ７８から押出し生地
７９となって成形ダイ１０の導入部１１へ押出される。Then, the synthetic wood powder is heated and kneaded by an extruder and is extruded into a dough 79 from an extrusion die 78 by a screw and is extruded to an introduction portion 11 of the molding die 10.
【００６０】まず、押出し生地７９は導入部１１で加熱
保温されて流動性を維持され良好な混練状態を保ちなが
ら、案内板１５を設けた場合には、該案内板により導入
部１１内で、原料によっては、押出し生地７９が押し出
し方向で、中央部と端部で異なる線膨張をして分子配向
を異にすることを防ぎ、線膨張の均質化を図り、分子配
向を制御して、成形部２１の成形室２２内へ均等に拡散
され、均一な密度で押出される。成形室２２の内壁面は
摩擦係数が小さいフッ素樹脂のシート２４を貼設又はフ
ッ素樹脂をコーティングされているので、この内壁面を
通過する押出し生地７９内のセルロース系破砕物は大き
な抵抗を受けることなく円滑に流動するので、均一で高
密度の混練状態を保ちながら押出される。この成形室２
２内を押出される過程で押出し生地７９が常温ないし６
０℃から９０℃の水または油などの冷却媒体により徐冷
・冷却され成形板２９が成形される。フッ素樹脂は金属
に比べ熱伝導係数が低いので、押出し生地７９は徐冷さ
れ、冷却による歪みが少なくなり、歪みの少ない均一で
高密度の製品としての成形板２９である木質合成板が成
形される。First, when the guide plate 15 is provided while the extruded material 79 is heated and kept warm in the introducing section 11 to maintain the fluidity and maintains a good kneading state, the extruded material 79 is introduced into the introducing section 11 by the guide plate. Depending on the raw material, the extruded material 79 may prevent different linear expansions in the central part and the end part in the extrusion direction to make the molecular orientation different, to homogenize the linear expansion, control the molecular orientation, and form It is evenly diffused into the molding chamber 22 of the part 21 and extruded at a uniform density. Since the inner wall surface of the molding chamber 22 is coated with or coated with the fluororesin sheet 24 having a small friction coefficient, the cellulosic crushed material in the extruded material 79 passing through this inner wall surface is greatly resisted. Because it flows smoothly without being extruded, it is extruded while maintaining a uniform and high-density kneaded state. This molding room 2
In the process of being extruded in 2, the extruded material 79 is at room temperature to 6
The forming plate 29 is formed by being gradually cooled and cooled by a cooling medium such as water or oil at 0 ° C to 90 ° C. Since the fluororesin has a lower coefficient of thermal conductivity than metal, the extruded material 79 is gradually cooled, and the distortion due to cooling is reduced, so that the wood synthetic board, which is the molding board 29 as a uniform and high-density product with less distortion, is formed. It
【００６１】さらに、押出機により加えられる成形板２
９への押出し力に、ブレーキ手段３０により抑制力を加
え、この成形板２９を介して成形室２２内の押出し生地
７９に対して前記押出し力に対する抗力を加える。例え
ば、成形板２９の表裏面を挟持して圧接する一対を成す
ピンチローラ３１の一方の軸端に設けたブレーキドラム
３３に摩擦体を圧接することにより、このブレーキドラ
ム３３の回転を抑制し、成形板２９の押出し力により回
転するピンチローラ３１の回転が抑制され、このピンチ
ローラ３１は成形板２９にその押出し力に抗する抑制力
を加える。Further, the molding plate 2 added by the extruder.
A braking force is applied to the pushing force to the sheet 9 by the braking means 30, and a reaction force against the pushing force is applied to the pushing material 79 in the shaping chamber 22 through the shaping plate 29. For example, by pressing a friction body against a brake drum 33 provided at one shaft end of a pair of pinch rollers 31 that sandwich and press the front and back surfaces of the molding plate 29, the rotation of the brake drum 33 is suppressed, The pushing force of the forming plate 29 suppresses the rotation of the pinch roller 31 that rotates, and the pinch roller 31 applies a suppressing force against the forming plate 29 against the pushing force.
【００６２】また、成形板の表裏面を挟持して圧接する
上下一対を成すピンチローラを複数対設け、上部のピン
チローラの両軸端に前記ピンチローラを回転自在にエア
シリンダのロッド先端を連結し、成形板を介して下部の
ピンチローラに対して押圧力を調整自在に設けたブレー
キ手段は、成形板に対して６，０００ｋｇの荷重を懸け
ており、また、一のピンチローラの軸端をパウダブレー
キの入力軸に連結すると共に、各ピンチローラの軸端に
設けた歯車を噛合せしめ、板厚３０mmの均一高密度な木
質合成板を成形できる。Further, a plurality of pairs of upper and lower pinch rollers which sandwich the front and back surfaces of the forming plate and press contact with each other are provided, and the pinch rollers are rotatably connected to the rod tip ends of the air cylinders at both shaft ends of the upper pinch roller. However, the braking means, which is provided with the pressing force adjustable to the lower pinch roller via the forming plate, applies a load of 6,000 kg to the forming plate, and the axial end of one pinch roller. Is connected to the input shaft of the powder brake, and the gears provided at the shaft ends of the pinch rollers are meshed with each other to form a uniform and high-density wood composite plate with a plate thickness of 30 mm.
【００６３】前記抑制力は成形板２９を介して成形部２
１及び導入部１１内の押出し生地７９に、押出機により
加えられる成形室２２内の押出し生地７９の押出し力に
対して抗力を与えることにより、前述したような成形板
２９に抑制力を加えない場合と比べると、成形室２２内
の押出し生地７９の全体がより一層密度が均一で高密度
になる。したがって、多量のセルロース系破砕物を含ん
だより一層均一高密度な木質合成板が成形される。The restraining force is applied to the forming part 2 via the forming plate 29.
1 does not exert a restraining force on the molding plate 29 as described above by giving a resistance to the extrusion dough 79 in the introduction part 11 and the extrusion force of the extrusion dough 79 in the molding chamber 22 applied by the extruder. Compared with the case, the entire extruded material 79 in the molding chamber 22 has a more uniform density and a higher density. Therefore, a more uniform and high density wooden synthetic board containing a large amount of cellulosic crushed material is formed.
【００６４】また、上記理由で、押出ダイ７８を通常の
ノズル状のダイと異なり、成形板２９の厚み例えば１２
mmと同様の高さ１２mmで、幅５０〜１５０mmの方形に射
出口を形成し、多量の溶融木質合成粉を吐出し、圧密を
促進可能であり、且つ、ダイの目詰まりを防ぐことがで
きる。For the above reason, the extrusion die 78 is different from the usual nozzle-shaped die in that the thickness of the molding plate 29 is, for example, 12 mm.
The height is 12 mm, which is the same as the mm, and the injection port is formed in a rectangular shape with a width of 50 to 150 mm, a large amount of molten synthetic wood powder is discharged, consolidation can be promoted, and die clogging can be prevented. .
【００６５】[0065]
【実施例】実施例について図面を参照して説明する。EXAMPLES Examples will be described with reference to the drawings.
【００６６】１．木質合成粉の製造実施例 １−１．〔流動混合混練手段〕 図１において、８０は原材料を混合し混練して「混練材
料」を形成する流動混合混練手段で、本実施例おいて、
便宜上「ミキサー」という。1. Production Example of Woody Synthetic Powder 1-1. [Fluid Mixing and Kneading Means] In FIG. 1, 80 is a fluid mixing and kneading means for mixing raw materials and kneading to form a “kneading material”.
For convenience, it is called a "mixer".
【００６７】８１はミキサー本体で、上面開口を有する
円筒形を成し容量が３００リットルのケーシングであ
り、前記開口はミキサー本体８１内に原材料を投入する
投入口９４で、この投入口９４を開閉自在な上蓋８２で
被蓋する。上蓋８２には、ミキサー本体８１内で木粉か
ら発生した多量の水蒸気ないしは木酸ガスを排出するガ
ス排出管９５を連通している。さらに、ミキサー本体８
１の底面付近の外周面に１ヶ所の排出口８８を設け、こ
の排出口８８を被蓋する蓋８９をシリンダ９１のロッド
先端に設け、シリンダ９１の作動により前記排出口８８
を開閉自在に設けている。９３は排出ダクトで、前記排
出口８８に連通している。Reference numeral 81 denotes a mixer main body, which is a cylindrical casing having an upper surface opening and a capacity of 300 liters. The opening is an input port 94 for inputting raw materials into the mixer main body 81, and this input port 94 is opened and closed. Cover with the free upper lid 82. A gas discharge pipe 95 for discharging a large amount of steam or wood acid gas generated from wood powder in the mixer body 81 is connected to the upper lid 82. Furthermore, the mixer body 8
A discharge port 88 is provided on the outer peripheral surface near the bottom surface of No. 1 and a lid 89 for covering the discharge port 88 is provided at the rod tip of the cylinder 91.
Is openable and closable. A discharge duct 93 communicates with the discharge port 88.
【００６８】さらに、ミキサー本体８１の底面の中心に
は図示せざるモータ３７KW（ＤＣ）の回転駆動手段によ
り８２０rpm/maxで高速回転する軸８３をミキサー本体
８１内の上方に向けて軸承し、この軸８３に下から上方
へ順にスクレイパー８４、撹拌衝撃翼８５，８６，８７
を装着し、軸８３の先端から締付ナット９２で締め付け
ている。なお、前記各撹拌衝撃翼８５，８６，８７の形
状は特に限定されないが、本実施例では軸８３を中心に
対称を成す２枚羽根である。図１のように３個の撹拌衝
撃翼を重ねた場合は全部で６枚の羽根で成り、これら６
枚の羽根は平面で３６０度を６等分した等分角（６０
度）を成すように互いに交叉した状態で重ねている。な
お、複数個の撹拌衝撃翼を設けた場合、撹拌衝撃翼の合
計の羽根数で３６０度を等分した角度で互いに交叉して
重ねることは原材料を効率良く混練する点で好ましい。Further, at the center of the bottom surface of the mixer main body 81, a shaft 83 which rotates at a high speed of 820 rpm / max is rotatably supported by the rotation driving means of a motor 37KW (DC) (not shown) upward in the mixer main body 81. A scraper 84, stirring impact blades 85, 86, 87 in order from bottom to top on the shaft 83
Is mounted and tightened with a tightening nut 92 from the tip of the shaft 83. The shape of each of the stirring impact blades 85, 86, 87 is not particularly limited, but in the present embodiment, it is two blades symmetrical about the axis 83. When three stirring impellers are stacked as shown in Fig. 1, it consists of a total of six blades.
Each of the blades is a plane with an equal angle (60
Are overlapped with each other so as to form a degree). When a plurality of stirring impact blades are provided, it is preferable that the raw materials be efficiently kneaded in such a manner that they are overlapped with each other at an angle that is equal to 360 degrees, which is the total number of stirring impact blades.
【００６９】なお、前記スクレイパー８４はミキサー本
体８１の底面を僅かに摺接して回転し、ミキサー本体８
１内で混練された原材料をミキサー本体８１の底面に残
留しないよう掻き出し、且つ原材料を循環するものであ
る。The scraper 84 is rotated by slightly sliding the bottom surface of the mixer body 81 into contact with the mixer body 8.
The raw material kneaded in 1 is scraped out so as not to remain on the bottom surface of the mixer body 81, and the raw material is circulated.
【００７０】前記上蓋８２を開放して投入口９４から投
入する原材料は、セルロース系の破砕物である木粉、熱
可塑性樹脂成形材、尿素、炭酸カルシウム、酸化チタ
ン、顔料等の添加物で成る。The raw material which is opened through the upper lid 82 and is introduced through the introduction port 94 is made of a crushed product of cellulose such as wood powder, thermoplastic resin molding material, urea, calcium carbonate, titanium oxide, pigment and other additives. .
【００７１】また、前記炭酸カルシウムは、本発明の木
質合成板に良好な寸法安定性をもたらし、温度変化に伴
う膨張収縮を著しく少なくすることに寄与するもので、
押出加工における成形品の変形を防止し、且つそれ自体
安価である。Further, the above-mentioned calcium carbonate brings good dimensional stability to the woody synthetic board of the present invention and contributes to remarkably reducing expansion and contraction due to temperature change.
It prevents deformation of the molded product during extrusion and is inexpensive per se.
【００７２】また、前記酸化チタンは、流動性、溶液中
における分散性が良好であり、本発明の木質合成板に対
して温度変化に伴う膨張収縮を著しく少なくすることに
寄与する。Further, the titanium oxide has good fluidity and dispersibility in a solution, and contributes to remarkably reducing expansion and contraction due to temperature change in the woody synthetic board of the present invention.
【００７３】熱可塑性樹脂成形材は、前述廃棄された各
種の樹脂成形品をそのままもしくは表面樹脂塗膜を形成
した樹脂成形品を複数の各小片に破砕し、前記破砕され
た個々の各小片に対して、圧縮研削作用を付加して樹脂
塗膜を研削、剥離し、前記研削された個々の各小片に対
して、微振動に基づいた圧縮衝撃力を付加して圧潰粉砕
させ、かつ圧潰粉砕によって剥離された樹脂塗膜を随時
に除去し熱可塑性樹脂成形材として素材化した、ＰＶＣ
（ポリ塩化ビニル）、ＰＥＴ（ポリエステル）、ＰＰ
（ポリプロピレン）、ＰＣ（ポリカーボネート）、ナイ
ロン等の樹脂の一種又はこれらの数種の混合したものを
用いることができる。The thermoplastic resin molding material is obtained by crushing the above-mentioned discarded various resin moldings as they are or crushing the resin molding having the surface resin coating film into a plurality of small pieces, and by crushing the crushed individual pieces. On the other hand, a compression grinding action is added to grind and peel off the resin coating film, and a compression impact force based on microvibration is applied to each of the ground small pieces to crush and crush, and crush and crush. PVC that is used as a thermoplastic resin molding material by removing the resin coating film peeled off at any time
(Polyvinyl chloride), PET (Polyester), PP
One type of resin such as (polypropylene), PC (polycarbonate), nylon, or a mixture of several types thereof can be used.
【００７４】なお、熱可塑性樹脂成形材は、熱可塑性合
成樹脂製品の廃材から得られた回収熱可塑性樹脂成形材
を再利用したもの、あるいはバージンの熱可塑性樹脂を
投入し、あるいはバージンの熱可塑性樹脂と前記回収熱
可塑性樹脂成形材をそれぞれ、例えば５０％ずつ用いる
こともできる。As the thermoplastic resin molding material, recycled thermoplastic resin molding material obtained from waste material of thermoplastic synthetic resin product is reused, or virgin thermoplastic resin is added, or virgin thermoplastic resin is used. It is also possible to use, for example, 50% each of the resin and the recovered thermoplastic resin molding material.
【００７５】以下、各熱可塑性樹脂成形材におけるゲル
化可能な木粉の量の範囲を以下に示す。熱可塑性樹脂成
形材がＰＰの場合、木粉は３５〜７５wt％、ＰＰの量は
２５〜６５wt％で、好ましくは、木粉は６０〜７５wt
％、ＰＰの量は２５〜４０wt％であり、熱可塑性樹脂成
形材がＰＥＴの場合、上記のＰＰの場合と同じであり、
熱可塑性樹脂成形材がＰＣの場合、木粉は４０〜７０wt
％で、ＰＣの量は３０〜６０wt％で、好ましくは、木粉
は６０〜６５wt％、ＰＣの量は３５〜４０wt％であり、
木粉が６４wt％で、ＰＣが３６wt％のときが、特に好ま
しい。熱可塑性樹脂成形材がＰＶＣの場合、木粉は３０
〜６５wt％で、ＰＶＣの量は３５〜７０wt％で、好まし
くは、木粉は４５〜５５wt％、ＰＶＣの量は４５〜５５
wt％であり、熱可塑性樹脂成形材がナイロンの場合、上
記のＰＣの場合と同じである。The ranges of the amount of gelling wood powder in each thermoplastic resin molding material are shown below. When the thermoplastic resin molding material is PP, the wood powder is 35 to 75 wt% and the amount of PP is 25 to 65 wt%, preferably the wood powder is 60 to 75 wt%.
%, The amount of PP is 25 to 40 wt%, and when the thermoplastic resin molding material is PET, the same as in the case of the above PP,
When the thermoplastic resin molding material is PC, wood powder is 40 to 70 wt.
%, PC amount is 30-60 wt%, preferably wood flour is 60-65 wt%, PC amount is 35-40 wt%,
Especially preferred is 64 wt% wood flour and 36 wt% PC. When the thermoplastic resin molding material is PVC, wood powder is 30
~ 65 wt%, PVC amount 35-70 wt%, preferably wood flour 45-55 wt%, PVC amount 45-55
%, and when the thermoplastic resin molding material is nylon, it is the same as in the case of PC described above.
【００７６】１−２．〔冷却造粒手段〕 図２において、１００は前述した混練材料を混合し撹拌
して「造粒木粉」を形成する冷却造粒手段であり、本実
施例では「クーリングミキサー」という。1-2. [Cooling and Granulating Means] In FIG. 2, 100 is a cooling and granulating means for mixing and stirring the above-mentioned kneading materials to form "granulated wood powder", and is referred to as "cooling mixer" in the present embodiment.
【００７７】１０１はミキサー本体で、逆円錐形状を成
すケーシングであり上面を被蓋し、一方、下端に排出口
１０７を設け、この排出口１０７をバルブ１０６で開閉
自在に設けている。ミキサー本体１０１の外周壁内にジ
ャケット１０２を形成し、このジャケット１０２内に給
水管１０８から排水管１０９へ常時、冷却水を供給し、
クーリングミキサー１００内の原材料の温度を熱可塑性
樹脂成形材の融点近傍まで冷却するよう保持される。な
お、ミキサー本体１０１の上壁面にはクーリングミキサ
ー１００内で発生した水蒸気ないしは木酸ガスを排出す
る図示せざる排出ダクトを連通している。Reference numeral 101 denotes a mixer main body, which is a casing having an inverted conical shape, the upper surface of which is covered, while a discharge port 107 is provided at the lower end, and the discharge port 107 is openably and closably opened by a valve 106. A jacket 102 is formed in the outer peripheral wall of the mixer body 101, and cooling water is constantly supplied from the water supply pipe 108 to the drain pipe 109 in the jacket 102.
The temperature of the raw materials in the cooling mixer 100 is maintained so as to be cooled to near the melting point of the thermoplastic resin molding material. In addition, an exhaust duct (not shown) for exhausting steam or wood acid gas generated in the cooling mixer 100 is connected to the upper wall surface of the mixer body 101.
【００７８】前記ミキサー本体１０１の上壁内の略中心
にはアーム１０３が略水平方向に回動可能に軸支され、
このアーム１０３は減速装置１１２を介してモータ１１
１により約３rpmの速度で回転駆動される。さらに、前
記アーム１０３の回転軸は中空軸であり、この中空軸内
に独立して回転する他の回転軸を設け、この回転軸にモ
ータ１０５の出力軸を連結している。一方、前記アーム
１０３の先端には撹拌破砕翼１０４を軸承し、この撹拌
破砕翼１０４は本実施例ではスクリュー型を成すもので
あり、該撹拌破砕翼１０４の回転軸線方向をミキサー本
体１０１の内周壁面に沿って略平行に下方へミキサー本
体１０１の下端付近まで延長している。撹拌破砕翼１０
４はアーム１０３内に設けた歯車等による回転伝達手段
を介して前記モータ１０５の出力軸に連結する回転軸に
連結され９０rpmの速度で回転駆動される。An arm 103 is rotatably supported about the center of the upper wall of the mixer body 101 so as to be rotatable in a substantially horizontal direction.
This arm 103 is connected to the motor 11 via a reduction gear 112.
It is rotationally driven by 1 at a speed of about 3 rpm. Further, the rotating shaft of the arm 103 is a hollow shaft, and another rotating shaft that rotates independently is provided in this hollow shaft, and the output shaft of the motor 105 is connected to this rotating shaft. On the other hand, a stirring and crushing blade 104 is supported at the tip of the arm 103, and the stirring and crushing blade 104 is a screw type in the present embodiment, and the rotational axis direction of the stirring and crushing blade 104 is inside the mixer main body 101. Along the peripheral wall surface, it extends downward substantially parallel to the vicinity of the lower end of the mixer body 101. Stirring crushing blade 10
Reference numeral 4 is connected to a rotating shaft connected to the output shaft of the motor 105 via a rotation transmitting means such as a gear provided in the arm 103, and is rotationally driven at a speed of 90 rpm.
【００７９】なお、ミキサー本体１０１の上壁には投入
口１１３を設け、この投入口１１３に前述したミキサー
８０の排出ダクト９３を連通する。A charging port 113 is provided on the upper wall of the mixer body 101, and the discharging duct 93 of the mixer 80 is connected to the charging port 113.
【００８０】前述したミキサー８０で形成された混練材
料は排出ダクト９３を経てクーリングミキサー１００の
投入口１１３からミキサー本体１０１内へ投入される。
撹拌破砕翼１０４はモータ１０５により９０rpmの速度
で回転し、しかも、アーム１０３が減速装置１１２を介
して減速されたモータ１１１の回転力により３rpmの速
度で水平方向に回転するので、前記撹拌破砕翼１０４は
ミキサー本体１０１の内周壁面に沿って円錐を描くよう
に回転し、アーム１０３内の混練材料を撹拌する。混練
材料はジャケット１０２内の冷却水により冷却されたミ
キサー本体１０１の内周壁面で冷却され、直径約２５mm
以下に造粒された「造粒木粉」が形成され、この造粒木
粉はバルブ１０６を開放して排出口１０７より排出され
る。The kneading material formed by the mixer 80 described above is introduced into the mixer main body 101 from the input port 113 of the cooling mixer 100 through the discharge duct 93.
The stirring and crushing blade 104 is rotated at a speed of 90 rpm by the motor 105, and the arm 103 is horizontally rotated at a speed of 3 rpm by the rotational force of the motor 111 which is decelerated by the speed reducer 112. 104 rotates along the inner peripheral wall surface of the mixer body 101 so as to draw a cone, and agitates the kneaded material in the arm 103. The kneading material is cooled by the inner peripheral wall surface of the mixer body 101 cooled by the cooling water in the jacket 102, and the diameter is about 25 mm.
"Granulated wood powder" that has been granulated is formed below, and the granulated wood powder is discharged from the discharge port 107 by opening the valve 106.
【００８１】なお、クーリングミキサー１００で冷却さ
れる混練材料は、原材料中の熱可塑性樹脂成形材の凝固
点すなわち融点以下に冷却されることが望ましいが、木
粉を混合しているので熱可塑性樹脂成形材の融点以下に
まで下げる必要はなく、実際には造粒木粉が排出口１０
７より排出可能な温度まで冷却されれば良く、混練材料
内の熱可塑性樹脂成形材の融点より約１０℃高い温度ま
で冷却すれば良い。The kneading material cooled by the cooling mixer 100 is preferably cooled to a temperature not higher than the freezing point, that is, the melting point of the thermoplastic resin molding material in the raw material. However, since the wood powder is mixed, the thermoplastic resin molding material is mixed. It is not necessary to lower the melting point to below the melting point of the material.
It is sufficient to cool to a temperature at which the thermoplastic resin molding material in the kneading material is higher than the melting point of the thermoplastic resin molding material in FIG.
【００８２】ちなみに、熱可塑性樹脂成形材がＰＰのと
き、ＰＰの融点は１６５℃であり、本実施例では前述し
たミキサー８０内で１８０℃にゲル化した混練材料をク
ーリングミキサー１００へ投入してから１０〜１５分程
度で、９０〜１００℃まで冷却され、このクーリングミ
キサーによる冷却造粒は効率の良いものである。このと
きのジャケット１０２内の冷却水については、給水管１
０８から供給する冷却水の温度は３０℃であったが、排
水管１０９より排水される冷却水の温度は４０℃であっ
た。By the way, when the thermoplastic resin molding material is PP, the melting point of PP is 165 ° C. In this embodiment, the kneading material gelled to 180 ° C. in the mixer 80 described above is put into the cooling mixer 100. It is cooled to 90 to 100 ° C. in about 10 to 15 minutes, and the cooling granulation by this cooling mixer is efficient. Regarding the cooling water in the jacket 102 at this time, the water supply pipe 1
The temperature of the cooling water supplied from 08 was 30 ° C., but the temperature of the cooling water drained from the drain pipe 109 was 40 ° C.
【００８３】なお、冷却造粒手段は上記のクーリングミ
キサーのような装置に限定されるものではなく、ミキサ
ー本体内の混練材料を撹拌する撹拌羽根を設け且つミキ
サー本体の外周壁面に前述したようなジャケットを設
け、このジャケット内を流れる冷却水でミキサー本体内
の混練材料を冷却するものであれば良い。The cooling granulation means is not limited to the above-mentioned cooling mixer, but is provided with a stirring blade for stirring the kneaded material in the mixer body and the outer peripheral wall surface of the mixer body as described above. What is necessary is just to provide a jacket and cool the kneading material in the mixer main body with the cooling water flowing in the jacket.
【００８４】なお、ミキサー８０で形成された混練材料
は前記ジャケット１０２を備えてない一般的なミキサー
を用いて撹拌のみを行なって冷却することも可能である
が、この場合は混練材料内の熱可塑性樹脂成形材の融点
より約１０℃程度高い温度まで冷却するとしても約３０
分かかるので、本実施例のようなクーリングミキサーの
冷却造粒手段で造粒木粉を形成することが望ましい。The kneaded material formed by the mixer 80 can be cooled by only stirring with a general mixer not equipped with the jacket 102. In this case, the heat in the kneaded material is reduced. Even if it is cooled to a temperature about 10 ° C higher than the melting point of the plastic resin molding material, it is about 30
Since it takes time, it is desirable to form the granulated wood powder by the cooling granulation means of the cooling mixer as in this embodiment.
【００８５】１−３．〔整粒手段〕 前記冷却造粒手段で形成された造粒木粉は、さらに整粒
手段を使用して粒径１０mm以下に整粒し、「木質合成
粉」を形成する。1-3. [Granulating means] The granulated wood powder formed by the cooling granulating means is further sized to a particle diameter of 10 mm or less by using a sizing means to form a "wood synthetic powder".
【００８６】図３において、１２０は前述した造粒木粉
を整粒する整粒手段であり、本実施例では「カッタミ
ル」を用いている。In FIG. 3, reference numeral 120 is a sizing means for sizing the above-mentioned granulated wood powder, and a "cutter mill" is used in this embodiment.
【００８７】１２１はカッタミル本体で、上面開口を有
する円筒形を成すケーシングであり、前記開口を開閉自
在な蓋１２２で被蓋する。前記蓋１２２はカッタミル本
体１２１内に造粒木粉を投入する投入口１２３を備えて
いる。Reference numeral 121 denotes a cutter mill body, which is a cylindrical casing having an upper surface opening, and the opening is covered with a lid 122 which can be opened and closed. The lid 122 is provided with a charging port 123 for charging the granulated wood powder in the cutter mill body 121.
【００８８】また、前記カッタミル本体１２１内にはカ
ッタミル本体１２１の底面に軸承されて図示せざる回転
駆動手段で水平方向に回転するカッタ支持体１２４を設
け、このカッタ支持体１２４の外周に上下方向に長い回
転刃１２５を３枚を設け、これらの３枚の回転刃１２５
はカッタ支持体１２４の回転方向で１２０度の等角度を
成すように配設し、３枚の回転刃１２５の刃先は同一の
回転軌跡上に位置している。さらに、前記３枚の回転刃
１２５の刃先の回転軌跡に対して僅かな隙間を介して二
の固定刃１２６を回転刃１２５の刃先の回転軌跡の略対
称位置にカッタミル本体１２１に固定し、二の固定刃１
２６とカッタ支持体１２４と回転刃１２５とでカッタミ
ル本体１２１内を二分し、投入室１２７と整粒室１２８
を形成する。前記蓋１２２の投入口１２３は前記投入室
１２７に連通する。なお、二の固定刃１２６と回転刃１
２５との隙間は造粒木粉を所望の大きさに整粒できるよ
う自在に調整できる。また、整粒室１２８は前記二の固
定刃１２６間を回転刃１２５の回転軌跡の周囲を囲むよ
うにスクリーン１２９で仕切っている。なお、スクリー
ン１２９は、本実施例では８mm程度の大きさの整粒され
た「木質合成粉」である整粒物が通過できるメッシュで
形成している。また、整粒室１２８のカッタミル本体１
２１の下端にはカッタミル１２０で前記整粒物を排出す
る排出口１３１を設けている。In the cutter mill body 121, there is provided a cutter support body 124 which is supported on the bottom surface of the cutter mill body 121 and rotates in the horizontal direction by a rotation driving means (not shown). 3 long blades 125 are installed on the
Are arranged so as to form an equal angle of 120 degrees in the rotation direction of the cutter support body 124, and the blade tips of the three rotary blades 125 are located on the same rotation locus. Further, the second fixed blade 126 is fixed to the cutter mill main body 121 at a position substantially symmetrical to the rotational locus of the blade tip of the rotary blade 125 with a slight gap with respect to the rotational trajectory of the blade tip of the three rotary blades 125. Fixed blade 1
26, the cutter support member 124, and the rotary blade 125 divide the inside of the cutter mill main body 121 into two parts, and a charging chamber 127 and a sizing chamber 128.
To form. The charging port 123 of the lid 122 communicates with the charging chamber 127. The second fixed blade 126 and the rotary blade 1
The gap with 25 can be freely adjusted so that the granulated wood powder can be sized to a desired size. Further, the sizing chamber 128 is partitioned by a screen 129 between the two fixed blades 126 so as to surround the circumference of the rotation locus of the rotary blade 125. The screen 129 is formed of a mesh through which a sized product, which is a “wood synthetic powder” having a size of about 8 mm, can pass in the present embodiment. Also, the cutter mill main body 1 of the sizing chamber 128
A discharge port 131 for discharging the sized product with the cutter mill 120 is provided at the lower end of 21.
【００８９】以上のカッタミル１２０において、蓋１２
２の投入口１２３から前述したクーリングミキサー１０
０で形成した造粒木粉を投入し、図示せざる回転駆動手
段でカッタ支持体１２４を回転すると、造粒木粉はカッ
タ支持体１２４の回転刃１２５と固定刃１２６間で約
０．１〜８mmの木質合成粉に切断され「木質合成粉」が
形成され、いわゆる熱可塑性樹脂成形材が熱的、化学的
に安定した木粉粒に固定化された状態を定常的に維持し
得るようにして木粉と熱可塑性樹脂成形材との混合、分
散状態を定常的に維持すべく、良好なる流動性を与える
木質合成粉が形成され、且つ冷却による凝縮、縮小作用
とも相まって、化学的な反応とか接着によらない木質合
成粉が形成され、整粒室１２８のスクリーン１２９のメ
ッシュを通過して排出口１３１より排出され次工程の押
出機７０へ送られる。In the above cutter mill 120, the lid 12
The cooling mixer 10 described above from the input port 123 of No. 2
When the granulated wood powder formed by 0 is charged and the cutter support 124 is rotated by a rotation driving means (not shown), the granulated wood powder is about 0.1 between the rotary blade 125 and the fixed blade 126 of the cutter support 124. It is possible to constantly maintain the state where the so-called thermoplastic resin molding material is fixed to thermally and chemically stable wood powder granules by cutting into ~ 8 mm wood synthetic powder and forming "wood synthetic powder". In order to constantly maintain the mixed state and the dispersed state of the wood powder and the thermoplastic resin molding material, a woody synthetic powder that gives good fluidity is formed, and in combination with the condensation and reduction action by cooling, the chemical A synthetic wood powder that is not formed by reaction or adhesion is formed, passes through the mesh of the screen 129 of the sizing chamber 128, is discharged from the discharge port 131, and is sent to the extruder 70 in the next step.
【００９０】２．木質合成板の製造実施例 ２−１．押出し工程 ２−１−１．〔押出機７０〕 図４において、７０は単軸押出機であるが、一般に押出
機は通常スクリュー形であり、単軸押出機と多軸押出機
があり、この変形又はこれらが組み合わさった構造を持
つものがあり、本発明にはいずれの押出機をも使用する
ことができる。2. Manufacturing Example of Wood Synthesis Board 2-1. Extrusion process 2-1-1. [Extruder 70] In FIG. 4, reference numeral 70 denotes a single-screw extruder, but generally, the extruder is usually a screw type, and there are a single-screw extruder and a multi-screw extruder. This modification or a structure in which these are combined Any extruder can be used in the present invention.
【００９１】７１はスクリューで、単軸型であり、この
スクリュー７１はギヤ減速機７２を介して図示せざるモ
ータによって駆動され、バレル７４内で回転する。この
回転するスクリュー７１でホッパ７３から投入されたセ
ルロース系破砕物と熱可塑性樹脂成形材が混練されなが
らスクリュー７１の前方へ押出される。バレル７４の外
面にはバンドヒータ７５を設けており、このバンドヒー
タ７５によりバレル７４内のセルロース系破砕物と樹脂
が加熱されスクリュー７１の溝に沿って前方へ輸送され
ながら漸次溶融しセルロース系破砕物と樹脂が練成され
る。そしてスクリーン７６及びアダプタ７７を経てアダ
プタ７７の押出ダイ７８から成形ダイ１０へ押出し生地
７９として押出される。Reference numeral 71 denotes a screw, which is a single-screw type screw. The screw 71 is driven by a motor (not shown) via a gear reducer 72 and rotates in a barrel 74. The cellulosic crushed material input from the hopper 73 and the thermoplastic resin molding material are kneaded by the rotating screw 71 and extruded forward of the screw 71. A band heater 75 is provided on the outer surface of the barrel 74. The band heater 75 heats the cellulosic crushed material and the resin in the barrel 74, and the resin is crushed by being gradually melted while being transported forward along the groove of the screw 71. Material and resin are kneaded. Then, through the screen 76 and the adapter 77, the material is extruded from the extrusion die 78 of the adapter 77 to the molding die 10 as the extrusion material 79.
【００９２】ホッパ７３内に投入する原材料はセルロー
ス系破砕物と熱可塑性樹脂成形材であり、特に木粉の粒
径を熱可塑性樹脂成形材とのなじみを良好とし、成形押
し出し時における木粉の摩擦抵抗を減じ成形機の損耗、
毀損の防止を図ることより、５０〜３００メッシュ、好
ましくは、６０（篩下）〜１５０メッシュ（篩上）とす
る微細な粉末状とし、成形時における木酸ガスを揮散
し、水蒸気あるいは気泡発生のおそれをなくし、表面の
肌荒れを防止する意図からその含有水分量を１５wt％以
内、好ましくは１１wt％以内、理想的には３〜５wt％の
範囲内としたものである。The raw materials to be put into the hopper 73 are the crushed cellulosic material and the thermoplastic resin molding material. Especially, the grain size of the wood powder is made to be well compatible with the thermoplastic resin molding material, and the wood powder at the time of extrusion is molded. Wear resistance of the molding machine due to reduced frictional resistance,
In order to prevent damage, it is made into a fine powder form of 50 to 300 mesh, preferably 60 (bottom sieve) to 150 mesh (top sieve), and volatilizes wood acid gas during molding to generate water vapor or bubbles. With the intention of eliminating the above-mentioned problem and preventing the surface from being roughened, the content of water is within 15 wt%, preferably within 11 wt%, and ideally within the range of 3 to 5 wt%.
【００９３】なお、かかる木粉の特性をさらに向上させ
るため尿素系樹脂接着剤に木材チップ等の素材を浸漬あ
るいはこれに添加し、加熱硬化した後５０〜３００メッ
シュに破砕、微粉末化することが可能であり、かかる木
粉の成形方法に於ては、充分な加熱硬化、特に尿素系樹
脂接着剤による中和しながらの加熱硬化によって木粉内
の木酸は、中和と揮散とにより急速に除去されると共に
木粉周面に硬化接着面が設けられ、木粉の含有水分が高
められることを有効に防止でき、さらに木粉の滑動性を
高め、成形押出し時に於ける摩擦抵抗を特に減じること
ができる。In order to further improve the properties of such wood powder, a material such as wood chips is immersed in or added to a urea resin adhesive, and after being heated and hardened, it is crushed into 50 to 300 mesh and pulverized into fine powder. In such a method for molding wood flour, the wood acid in the wood flour can be neutralized and volatilized by sufficient heat curing, especially heat curing while neutralizing with the urea resin adhesive. Along with the rapid removal, a hardened adhesive surface is provided on the peripheral surface of the wood powder, which can effectively prevent the water content of the wood powder from increasing, and further improve the sliding property of the wood powder, and increase the friction resistance during molding extrusion. Especially it can be reduced.
【００９４】熱可塑性樹脂成形材は、前述廃棄された各
種の樹脂成形品をそのままもしくは表面樹脂塗膜を形成
した樹脂成形品を複数の各小片に破砕し、前記破砕され
た個々の各小片に対して、圧縮研削作用を付加して樹脂
塗膜を研削、剥離し、前記研削された個々の各小片に対
して、微振動に基づいた圧縮衝撃力を付加して圧潰粉砕
させ、かつ圧潰粉砕によって剥離された樹脂塗膜を随時
に除去し熱可塑性樹脂成形材として素材化した、ＰＶＣ
（ポリ塩化ビニル）、ＰＥＴ（ポリエステル）、ＰＰ
（ポリプロピレン）等の樹脂である。The thermoplastic resin molding material is obtained by crushing the above-mentioned discarded various resin moldings as they are or crushing the resin molding having the surface resin coating film into a plurality of small pieces, and by crushing each of the crushed individual pieces. On the other hand, a compression grinding action is added to grind and peel off the resin coating film, and a compression impact force based on microvibration is applied to each of the ground small pieces to crush and crush, and crush and crush. PVC that is used as a thermoplastic resin molding material by removing the resin coating film peeled off at any time
(Polyvinyl chloride), PET (Polyester), PP
(Polypropylene) and other resins.
【００９５】熱可塑性樹脂成形材は、ＰＰの場合、前記
木粉は最大で７５wt％まで混入される。木粉を混入する
割合の範囲は２０〜７５wt％相当であるが、好ましくは
３０〜７０wt％である。When the thermoplastic resin molding material is PP, the wood powder is mixed up to 75 wt% at the maximum. The range of the mixing ratio of wood powder is 20 to 75% by weight, preferably 30 to 70% by weight.
【００９６】混入容量は、目的とする耐摩耗特性などの
諸特性に合わせて適宜決定されるものであるが、本発明
においては、前述の成形時における種々の弊害が除去さ
れることから多量に混入することができる。The mixed capacity is appropriately determined in accordance with various characteristics such as desired wear resistance characteristics. However, in the present invention, various adverse effects at the time of molding described above are eliminated, so that the mixed capacity is large. Can be mixed.
【００９７】ＰＥＴの場合は、木粉は最大で６０wt％ま
で混入されるが、木粉の混入割合は２０〜６０wt％が良
い。In the case of PET, wood powder is mixed up to a maximum of 60 wt%, but the mixing ratio of wood powder is preferably 20 to 60 wt%.
【００９８】熱可塑性樹脂成形材がＰＶＣのとき、木粉
の混入割合は３０〜６０wt％、好ましくは４５wt％であ
る。When the thermoplastic resin molding material is PVC, the mixing ratio of wood powder is 30 to 60% by weight, preferably 45% by weight.
【００９９】なお、押出成形においては、熱可塑性合成
樹脂製品の廃材から得られた回収熱可塑性樹脂成形材を
再利用して前記押出機内へ投入し、あるいはバージンの
熱可塑性樹脂を投入し、あるいはバージンの熱可塑性樹
脂と前記回収熱可塑性樹脂成形材をそれぞれ、例えば５
０％ずつ投入することもできる。In the extrusion molding, the recovered thermoplastic resin molding material obtained from the waste material of the thermoplastic synthetic resin product is reused and charged into the extruder, or the virgin thermoplastic resin is charged, or The virgin thermoplastic resin and the recovered thermoplastic resin molding material are each used, for example, 5
It is also possible to add 0% each.
【０１００】尚、使用目的に応じて、顔料を添加し、製
品に着色することもできる。The product may be colored by adding a pigment depending on the purpose of use.
【０１０１】また、前述したように、流動混合混練手段
でゲル化混練し、前記ゲル化した混練材料を冷却造粒手
段で冷却造粒し、さらに前記冷却造粒した造粒木粉を粒
径１０mm以下に整粒して得た本発明の木質合成粉を前記
押出機７０のホッパ７３内に投入すると、木粉と熱可塑
性樹脂成形材との馴染みがより一層良好であり、木粉の
摩擦抵抗を減じ得る良好な混練状態の生地が形成され
る。As described above, the fluidized mixing and kneading means is used for gelation and kneading, the gelled kneading material is cooled and granulated by the cooling and granulating means, and the cooled and granulated wood powder is granulated. When the woody synthetic powder of the present invention obtained by sizing to 10 mm or less is put into the hopper 73 of the extruder 70, the woodpowder and the thermoplastic resin molding material are more familiar and the friction of the woodpowder is improved. A good kneaded dough is formed which can reduce drag.
【０１０２】２−１−２．〔押出ダイ〕 図９において、１７はアダプタで、押出機７０で練成さ
れた押出し生地７９を流入する流入口１８と押出し生地
７９を後述する成形ダイ１０ａへ吐出する押出ダイ１９
とを備えている。さらに、アダプタ１７の先端に断面矩
形状を成す突部を設けている。前記押出ダイ１９は前記
突部の先端に約８mmの肉厚を形成するように幅５０mm、
高さ１２mmの細長の矩形状を成し（図１０を参照）、前
記流入口１８はアダプタ１７の後端面に直径５０mmの円
形を成し、この流入口１８から前記押出ダイ１９に向け
て徐々に断面変形する連通孔を形成している。なお、流
入口１８は押出機７０の断面円形の吐出口と同じ大きさ
に形成し、一方、押出ダイ１９の矩形の幅は流入口１８
の直径と同じ寸法に形成し、高さは後述する成形ダイ１
０ａの成形室２２の高さと同じ寸法に形成することが好
ましい。2-1-2. [Extrusion Die] In FIG. 9, 17 is an adapter, which is an inlet 18 through which the extruded dough 79 kneaded by the extruder 70 flows, and an extruding die 19 for discharging the extruded dough 79 to a forming die 10a described later.
It has and. Further, a protrusion having a rectangular cross section is provided at the tip of the adapter 17. The extrusion die 19 has a width of 50 mm so that a thickness of about 8 mm is formed at the tip of the protrusion.
It has an elongated rectangular shape with a height of 12 mm (see FIG. 10), and the inlet 18 has a circular shape with a diameter of 50 mm on the rear end face of the adapter 17, and gradually extends from the inlet 18 toward the extrusion die 19. A communication hole that is deformed in cross section is formed. The inlet 18 is formed to have the same size as the circular outlet of the extruder 70, while the rectangular width of the extrusion die 19 is the inlet 18.
Formed to the same size as the diameter of the
It is preferable to form the same size as the height of the molding chamber 22 of 0a.
【０１０３】なお、アダプタ１７は押出機７０の大きさ
に応じて種々の大きさに形成でき、例えば、流入口１８
の直径を１５０mmである場合は押出ダイ１９の矩形の幅
を１５０mm、高さを成形室２２の高さと同じ１２mmとす
ることができる。The adapter 17 can be formed in various sizes according to the size of the extruder 70. For example, the inlet 18
When the diameter is 150 mm, the width of the rectangle of the extrusion die 19 can be 150 mm, and the height can be 12 mm, which is the same as the height of the molding chamber 22.
【０１０４】前記アダプタ１７の後端は該１７の外周に
嵌着した取付具２８を介して押出機７０のスクリーン７
６を備えたスクリーン部１６の先端面にボルトなどの取
付具で連結してアダプタ１７の流入口１８と押出機７０
のスクリーン部１６の出口とを連通し、一方、成形ダイ
１０ａの後端面の略中央位置に断面矩形状の凹部を形成
し、この凹部にアダプタ１７の先端の断面矩形状の突部
を装着して押出ダイ１９と成形ダイ１０ａの導入孔１２
ａを連通する。The rear end of the adapter 17 is attached to the screen 7 of the extruder 70 via a fitting 28 fitted to the outer periphery of the adapter 17.
6 is connected to the tip end surface of the screen portion 16 with a fixture such as a bolt, and the inlet port 18 of the adapter 17 and the extruder 70 are connected.
To communicate with the outlet of the screen portion 16, and a concave portion having a rectangular cross section is formed at a substantially central position of the rear end surface of the molding die 10a, and a protrusion having a rectangular cross section at the tip of the adapter 17 is mounted in the concave portion. And the introduction hole 12 of the extrusion die 19 and the molding die 10a
Connect a.
【０１０５】なお、前記アダプタ１７の連通孔の周壁内
には加熱手段たるヒータ１４ａを埋設している。A heater 14a as a heating means is embedded in the peripheral wall of the communication hole of the adapter 17.
【０１０６】〔押出ダイ内の作用〕押出機７０のスクリ
ーン部１６の出口より押し出された押出し生地７９は、
アダプタ１７の流入口１８から流入し、ヒータ１４ａで
加熱保温されながら連通孔を経て押出ダイ１９から成形
ダイ１０ａの導入孔１２ａ内へ流動する。流入口１８か
ら押出ダイ１９への連通孔の断面変化は比較的急激に狭
くなっているが、この断面変化は高さ方向の変化のみで
あるので、押出し生地７９の流動状態は複雑ではなく良
好である。しかも、前記押出ダイ１９は通常の一般的な
ダイとは異なり、射出口が大きいため多量の溶融木質合
成粉を吐出し、且つ圧密を促進可能な形状に形成されて
いるので、通常のダイで生じていたようなダイの目詰ま
りが生じない。[Operation in Extrusion Die] The extruded material 79 extruded from the exit of the screen portion 16 of the extruder 70 is
It flows from the inflow port 18 of the adapter 17 and flows from the extrusion die 19 into the introduction hole 12a of the molding die 10a through the communication hole while being heated and kept warm by the heater 14a. The cross-section change of the communication hole from the inflow port 18 to the extrusion die 19 is relatively sharply narrowed. However, since this cross-section change is only the change in the height direction, the flow state of the extrusion dough 79 is not complicated and is good. Is. Moreover, unlike the ordinary die, the extrusion die 19 has a large injection port and is formed into a shape capable of discharging a large amount of molten synthetic wood powder and promoting compaction. The die does not clog as it did.
【０１０７】２−２．成形工程 ２−２−１．〔成形ダイ１０〕 図５において、１０は成形ダイで、いわゆるＴダイ式の
成形ダイに類似の形状を成しており、押出機７０の断面
円形の押出ダイ７８から吐出された押出し生地７９を加
熱保温して押出し生地７９の流動性を維持しながら押出
す導入部１１と、導入部１１から押出された押出し生地
７９を幅広で所定の肉厚の板状に成形する成形室２２を
有する成形部２１から成る。2-2. Molding process 2-2-1. [Molding Die 10] In FIG. 5, 10 is a molding die having a shape similar to that of a so-called T-die type molding die. Molding having an introduction part 11 for heating and extruding while maintaining the fluidity of the extruded dough 79, and a molding chamber 22 for extruding the extruded dough 79 extruded from the introducing part 11 into a wide plate having a predetermined wall thickness. It consists of a part 21.
【０１０８】前記導入部１１は、導入孔１２および導入
室１３を備え、直径約６５mmの断面円形を成す押出ダイ
７８から幅９１０mm、高さ１２mmの細長の矩形状の断面
を成す成形室２２の入口へと急激に断面変形している。
そして押出ダイ７８から成形室２２の入口までの距離
（導入部１１の押出し方向の距離）は約２００mmであ
る。The introduction part 11 is provided with an introduction hole 12 and an introduction chamber 13, and from an extrusion die 78 having a circular cross section with a diameter of about 65 mm to a forming chamber 22 having a narrow rectangular cross section with a width of 910 mm and a height of 12 mm. The section is rapidly deformed toward the entrance.
The distance from the extrusion die 78 to the inlet of the molding chamber 22 (distance in the extrusion direction of the introduction part 11) is about 200 mm.
【０１０９】１２は導入孔で、成形ダイ１０内に成形ダ
イ１０の幅方向に形成され、縦断面を図５に示すように
断面楕円形に膨出形成され、前記押出ダイ７８とほぼ同
等もしくは若干大きく形成し、横断面の形状は図６に示
すように成形ダイ１０の幅方向に湾曲しており、その両
端が成形室２２の入口の矩形状の断面の長手方向の両端
に及んで、いわゆるコート・ハンガー型に形成されてお
り、この導入孔１２の長手方向の略中央位置で押出機７
０の押出ダイ７８に連通している。また、前記導入孔１
２から成形室２２の入口までの間は、縦断面が徐々に狭
くなる方向に断面三角形を成す導入室１３で連通してい
る。Reference numeral 12 is an introduction hole, which is formed in the molding die 10 in the width direction of the molding die 10 and is bulged to have an elliptical cross section as shown in FIG. It is formed slightly larger, and the shape of its cross section is curved in the width direction of the molding die 10 as shown in FIG. 6, and its both ends reach both ends in the longitudinal direction of the rectangular cross section of the inlet of the molding chamber 22, It is formed in a so-called coat-hanger type, and the extruder 7 is located at a substantially central position in the longitudinal direction of the introduction hole 12.
0 extrusion die 78. In addition, the introduction hole 1
From the 2 to the inlet of the molding chamber 22, there is communicated with the introduction chamber 13 having a triangular cross section in the direction in which the vertical cross section is gradually narrowed.
【０１１０】なお、前記導入孔１２は、横断面で押出機
７０の押出ダイ７８から成形室２２の入口の矩形状の断
面の長手方向の両端を直線で結ぶようなコート・ハンガ
ー型に形成してもよく、或いは成形ダイ１０の幅方向に
直線状に形成するいわゆるストレイト・マニホールド型
に形成してもよいが、導入孔１２及び導入室１３内を流
動する押出し生地７９の流動性が優れているという点
で、前述した湾曲形状のコート・ハンガー型の導入孔１
２が特に好ましい。The introduction hole 12 is formed in a coat-hanger type in which a cross section of the extrusion die 78 of the extruder 70 connects the longitudinal ends of the rectangular cross section of the inlet of the molding chamber 22 with a straight line. Alternatively, it may be formed in a so-called straight manifold type which is formed linearly in the width direction of the molding die 10, but the extruded dough 79 flowing in the introduction hole 12 and the introduction chamber 13 has excellent fluidity. In terms of the presence of the curved coat-hanger type introduction hole 1 described above
2 is particularly preferred.
【０１１１】又、前記導入孔１２及び導入室１３を断面
楕円形に膨出形成することなく、押出ダイ７８から成形
室に向かって、縦断面が徐々に狭くなる方向に縦断面三
角形に形成し、あるいは、図８（Ａ）に示すように、前
記導入孔１２及び導入室１３の構成を簡略化して、押出
ダイ７８の内径と共に前記導入孔１２及び導入室１３を
成形室２２の高さと同等に形成し、導入孔１２及び導入
室１３にも後述のフッ素樹脂でなるシート２４を貼設し
てもよい。Further, the introduction hole 12 and the introduction chamber 13 are formed into a triangular vertical cross section in a direction in which the vertical cross section is gradually narrowed from the extrusion die 78 toward the molding chamber without bulging to have an elliptical cross section. Alternatively, as shown in FIG. 8 (A), the structure of the introduction hole 12 and the introduction chamber 13 is simplified, and the introduction hole 12 and the introduction chamber 13 are made equal to the height of the molding chamber 22 together with the inner diameter of the extrusion die 78. The sheet 24 made of fluororesin described below may be attached to the introduction hole 12 and the introduction chamber 13 as well.
【０１１２】１４はヒータで、電熱ヒータ等の加熱手段
で前記導入孔１２と導入室１３の周壁外周に設けてもよ
いが、実施例では、加熱効果に優れているという点で、
前記周壁内に設けられ、導入孔１２及び導入室１３内を
流動する押出し生地７９を加熱保温し、押出し生地７９
の流動性を維持する。Reference numeral 14 denotes a heater, which may be provided on the outer circumference of the peripheral wall of the introduction hole 12 and the introduction chamber 13 by a heating means such as an electric heater, but in the embodiment, the heating effect is excellent.
The extruded dough 79, which is provided in the peripheral wall and flows in the introduction hole 12 and the introduction chamber 13, is heated and kept warm to extrude the extruded dough 79.
Maintain the liquidity of.
【０１１３】なお、前記成形室２２は、加熱及び冷却手
段をそれぞれ備える上下２枚の金属板を両側縁に配置し
た金属製の図示せざるスペーサで、断面方形に形成した
もので、前記スペーサの交換により２以上の目的とする
木質合成板の肉厚が得られるように調整する。The forming chamber 22 is a metal spacer (not shown) in which upper and lower two metal plates respectively having heating and cooling means are arranged on both side edges, and is formed in a rectangular cross section. Adjust so that two or more desired wood synthetic board thicknesses can be obtained by replacement.
【０１１４】成形ダイ１０の幅方向の縦断面で幅９１０
mm、高さ１２mmの細長の矩形状の断面を成し、成形室２
２の入口からダイ出口２３までの距離（成形部２１の押
出し方向の距離）は５００mmである。A width 910 in the widthwise vertical cross section of the molding die 10.
mm, height 12 mm, forming an elongated rectangular section, forming chamber 2
The distance from the inlet 2 to the die outlet 23 (distance in the extrusion direction of the molding part 21) is 500 mm.
【０１１５】２−２−２．〔成形ダイ１０ａ〕 １０ａは成形ダイで、前述した実施例の成形ダイ１０と
同様の形状を成すもので、押出し生地７９を加熱保温し
て押出し生地７９の流動性を維持しながら押し出す導入
部１１ａと、前述した成形ダイ１０と同様の成形部２１
とから成る。前記導入部１１ａは、幅５０mm、高さ１２
mmの矩形状を成す押出ダイ１９から、幅９００mm、高さ
１２mmの細長の矩形状の断面を成す成形室２２の入口へ
と急激に断面変形するコートハンガー型の導入孔１２ａ
を備えたもので、この導入孔１２ａは前述した成形ダイ
１０の導入孔１２と導入室１３を成形室２２の高さと同
等に形成したものである。他は前述実施例の成形ダイ１
０と同様である。2-2-2. [Molding die 10a] 10a is a molding die having the same shape as the molding die 10 of the above-described embodiment, and the extruding material 79 is extruded while heating and keeping the extruded material 79 while maintaining the fluidity of the extruded material 79. And a molding part 21 similar to the molding die 10 described above.
It consists of and. The introduction portion 11a has a width of 50 mm and a height of 12
A coat-hanger-type introduction hole 12a that undergoes a rapid cross-sectional deformation from an extrusion die 19 having a rectangular shape of mm to an inlet of a molding chamber 22 having a narrow rectangular shape having a width of 900 mm and a height of 12 mm.
The introduction hole 12a is formed by forming the introduction hole 12 and the introduction chamber 13 of the molding die 10 described above in the same height as the molding chamber 22. Others are the molding die 1 of the above-mentioned embodiment.
The same as 0.
【０１１６】２−２−３．成形ダイ内の構造 前記成形室２２の上下左右の四方の内壁面は厚さ０．２
５mmのフッ素樹脂でなるシート２４を貼設している。こ
の他に、成形室２２の上下左右の四方の内壁面にフッ素
樹脂を直接表面コーティングすることもできるが、交換
が容易でありフッ素樹脂のコーティング加工が容易で耐
久性に富むという点で、フッ素樹脂のシート２４を貼設
することが特に好ましい。2-2-3. Structure inside the molding die The inner wall surfaces of the molding chamber 22 on all four sides are 0.2 mm.
A sheet 24 of 5 mm fluororesin is attached. In addition to this, the fluorine resin can be directly surface-coated on the four inner wall surfaces of the molding chamber 22 in the upper, lower, left, and right directions, but it is easy to replace the fluorine resin, and the fluorine resin coating process is easy and highly durable. It is particularly preferable to attach the resin sheet 24.
【０１１７】前記シート２４は特に好ましくは、ガラス
織布の表面にフッ素樹脂のフィルムをコーティングした
ものであり、フッ素樹脂には上述のように、テフロンＴ
ＦＥ、テフロンＦＥＰ、テフロンＣＴＦＥ、テフロンＶ
ｄＦ等がある。なお、前記ガラス織布はガラス繊維の不
織布でもよい。The sheet 24 is particularly preferably a glass woven fabric coated with a fluororesin film, and the fluororesin is coated with Teflon T as described above.
FE, Teflon FEP, Teflon CTFE, Teflon V
There are dF and the like. The woven glass fabric may be a non-woven fabric of glass fibers.
【０１１８】なお、前述のフッ素樹脂のコーティング加
工は、成形室２２の上下の内壁面、すなわち成形板の表
裏面を形成する面に相当する内壁面に施すこともできる
が、前述したように成形室２２の上下左右の内壁面全体
に施すことが望ましい。The above-mentioned fluororesin coating process can be performed on the upper and lower inner wall surfaces of the molding chamber 22, that is, the inner wall surfaces corresponding to the surfaces forming the front and back surfaces of the molding plate, but as described above. It is desirable to apply it to the entire upper, lower, left, and right inner wall surfaces of the chamber 22.
【０１１９】また、２５は冷却管で、成形ダイ１０の成
形部１１を冷却する冷却手段の一例を示すもので、成形
室２２の上下の成形ダイ１０内に成形部２１の押出し方
向に適当な間隔毎に挿通して配管し、この冷却管２５に
常温の水又は７０〜８０℃程度までの水あるいは油等の
冷却媒体たる冷却液を供給して成形室２２内の押出し生
地７９を冷却する。この冷却管の配管は成形室２２内の
押出し生地７９の徐冷効果を向上するために成形室２２
の入口付近からダイ出口２３の方向に向けて冷却管２５
の間隔を次第に狭くするように設けることもでき、ある
いは冷却管２５を成形ダイ１０の成形部１１の外壁に配
設することもできるが、成形室２２内の押出し生地７９
を冷却できればよいので、この実施例の構造に限定され
ない。A cooling pipe 25 is an example of a cooling means for cooling the molding portion 11 of the molding die 10. The cooling pipe 25 is suitable for the extrusion direction of the molding portion 21 in the upper and lower molding dies 10 of the molding chamber 22. The extruded dough 79 in the molding chamber 22 is cooled by supplying water to the cooling pipe 25 as a cooling medium such as water at room temperature or water up to about 70 to 80 ° C. or oil to the cooling pipe 25, which is inserted at intervals. . This cooling pipe is provided in the forming chamber 22 in order to improve the effect of gradually cooling the extruded material 79 in the forming chamber 22.
Cooling pipe 25 from the vicinity of the inlet to the die outlet 23
The cooling pipe 25 may be provided so as to be gradually narrowed, or the cooling pipe 25 may be arranged on the outer wall of the molding portion 11 of the molding die 10.
However, the structure is not limited to the structure of this embodiment.
【０１２０】２−２−４．〔案内板〕 １５は案内板で、本実施例では図１２に示すように、平
面で短辺約２００mm、長辺約８５０mm、高さ約１００mm
の左右対称の台形形状を成す厚さ７mmの板であり、この
案内板１５の全外表面に０．１〜０．５mm厚のテフロン
等のフッ素樹脂でなるシートを貼設したものである。な
お、案内板１５の外表面にフッ素樹脂を直接コーティン
グしても良く、フッ素樹脂のシートを貼設又はフッ素樹
脂をコーティングする方法は、前述した成形ダイ１０の
成形室２２内に設けたシート２４と同様である。この案
内板１５を高さ１２mm、幅９００mmを成す前記導入孔１
２ａ内に、該導入孔１２ａの幅方向で両端に２５mmづつ
の間隔を有するよう略中央に位置させ、さらに案内板１
５の後端縁を導入孔１２ａの後端壁面に略平行間隔を有
するように位置させ、この案内板１５を成形ダイ１０ａ
に図１２に示すように４個のボルト２７で導入孔１２ａ
の下面に固定する。したがって案内板１５の上面と導入
孔１２ａの上面との間に５mmの隙間が形成される。2-2-4. [Guide Plate] Reference numeral 15 is a guide plate, and in the present embodiment, as shown in FIG. 12, a plane has a short side of about 200 mm, a long side of about 850 mm, and a height of about 100 mm.
Is a plate having a symmetrical trapezoidal shape with a thickness of 7 mm, and a sheet made of fluororesin such as Teflon having a thickness of 0.1 to 0.5 mm is attached to the entire outer surface of the guide plate 15. Note that the outer surface of the guide plate 15 may be directly coated with a fluororesin, and the method of sticking a fluororesin sheet or coating the fluororesin is the sheet 24 provided in the molding chamber 22 of the molding die 10 described above. Is the same as. The guide plate 15 has a height of 12 mm and a width of 900 mm.
The guide plate 1 is located in the center of the guide hole 12a in the width direction of the introduction hole 12a so as to have 25 mm intervals at both ends.
5, the rear end edge of the guide hole 15 is positioned so as to be substantially parallel to the rear end wall surface of the introduction hole 12a, and the guide plate 15 is attached to the forming die 10a.
As shown in FIG. 12, the four bolts 27 are used to introduce the introduction hole 12a.
Fixed to the underside of. Therefore, a gap of 5 mm is formed between the upper surface of the guide plate 15 and the upper surface of the introduction hole 12a.
【０１２１】なお、案内板１５は、その板厚を導入孔１
２ａの高さに応じて導入孔１２ａの高さの７０％以下の
寸法に形成し、案内板１５の幅は導入孔１２ａの幅の約
７０〜９５％の長さを有するよう形成することが好まし
い。The guide plate 15 has the same thickness as the introduction hole 1
The guide plate 15 may be formed to have a size of 70% or less of the height of the introduction hole 12a according to the height of 2a, and the width of the guide plate 15 may be about 70 to 95% of the width of the introduction hole 12a. preferable.
【０１２２】また、案内板１５は、案内板１５の上下面
に導入孔１２ａの上下面と同程度の隙間を設けるよう導
入孔１２ａの高さ方向の略中央に位置させることもでき
る。本実施例の案内板１５を導入孔１２ａの高さ方向の
略中央に位置させるとすれば、高さ方向で上下に２．５
mmづつの隙間を成すよう導入孔１２ａの高さ方向の略中
央に位置させ、この案内板１５を成形ダイ１０ａに４個
の段付きピンで螺着、固定する。Further, the guide plate 15 may be positioned substantially at the center in the height direction of the introduction hole 12a so that the same clearance as the upper and lower surfaces of the introduction hole 12a is provided on the upper and lower surfaces of the guide plate 15. If the guide plate 15 of the present embodiment is positioned substantially at the center of the introduction hole 12a in the height direction, the guide plate 15 is 2.5 in the height direction.
The guide plate 15 is screwed and fixed to the molding die 10a with four stepped pins so that the guide plate 15 is positioned approximately at the center in the height direction so as to form a gap of mm.
【０１２３】２−２−５．成形ダイ内の作用 〔成形ダイ１０内の作用〕押出機７０の押出ダイ７８よ
り押出された押出し生地７９は、導入孔１２に沿って成
形ダイ１０の幅方向へ流動すると同時に、導入室１３を
経て成形室２２内の押出し方向へ流れる。いわば、図６
の二点鎖線に示すように、押出機７０の押出ダイ７８を
中心に輪を拡げるような方向に流れる。2-2-5. Operation in Molding Die [Operation in Molding Die 10] Extruded dough 79 extruded from the extrusion die 78 of the extruder 70 flows in the width direction of the molding die 10 along the introduction hole 12 and, at the same time, flows in the introduction chamber 13. After that, it flows in the extrusion direction in the molding chamber 22. So to speak, Fig. 6
As indicated by the chain double-dashed line, the flow flows in a direction in which the ring expands around the extrusion die 78 of the extruder 70.
【０１２４】このとき導入部１１においては、ヒータ１
４で加熱しているので、押出し生地７９の流動性は維持
されており、導入孔１２及び導入室１３は高さが高い上
に幅が急に拡がっているので、導入孔１２及び導入室１
３内を流れる押出し生地７９は良好な混練状態を保ちな
がら押出される。押出し生地７９は、断面の長さ９１０
mm、高さ１２mmの細長の矩形状を成す成形室２２内を押
出され、この成形室２２内を通過する過程で冷却管２５
内を流れる冷却水により冷却されて固形化され１２mmの
肉厚の製品としての成形板２９である木質合成板が成形
される。At this time, in the introduction section 11, the heater 1
Since it is heated at 4, the fluidity of the extruded dough 79 is maintained, and since the introduction hole 12 and the introduction chamber 13 are high in height and wide in width, the introduction hole 12 and the introduction chamber 1
The extruded dough 79 flowing in 3 is extruded while maintaining a good kneading state. The extruded material 79 has a cross-sectional length of 910.
mm, the height is 12 mm, and the cooling pipe 25 is extruded in the molding chamber 22 having a long and narrow rectangular shape and passes through the molding chamber 22.
A wood synthetic board, which is a molded board 29 as a product having a wall thickness of 12 mm, is molded by being cooled by cooling water flowing inside and solidified.
【０１２５】なお、押出し生地７９が成形室２２を流動
する過程において、成形室２２の上下左右の四方の内壁
面には、フッ素樹脂で成るシート２４を貼設しているの
で、押出し生地７９は徐冷されながら円滑に押出され
る。In the process in which the extruded cloth 79 flows in the molding chamber 22, the sheets 24 made of fluororesin are attached to the inner wall surfaces of the molding chamber 22 in the upper, lower, left, and right directions. Smoothly extruded while being gradually cooled.
【０１２６】フッ素樹脂は、約３００℃の耐熱性を有
し、表面が平滑であり摩擦係数が小さく、金属に比
べて熱伝導係数が低いという性質を有しているので、押
出し生地７９に対して以下に示すような作用をする。The fluororesin has a heat resistance of about 300 ° C., a smooth surface, a small friction coefficient, and a low thermal conductivity coefficient as compared with metal. And operates as shown below.
【０１２７】(1)フッ素樹脂は表面が平滑であり摩擦係
数は小さいので、成形室２２内を通過する押出し生地７
９内の特に木粉は大きな抵抗を受けずに流動する。その
ため押出し生地７９の混練状態は良好な状態を維持し
て、結果として密度が均一で巣ができずしかも表面が平
滑な高品質の木質合成板が生成される。(1) Since the fluororesin has a smooth surface and a small friction coefficient, the extruded material 7 passing through the molding chamber 22
Especially wood flour in 9 flows without receiving great resistance. Therefore, the kneaded state of the extruded dough 79 is maintained in a good state, and as a result, a high-quality synthetic wood board having a uniform density and having no nests and a smooth surface is produced.
【０１２８】成形部２１では押出し生地７９が冷却され
るので押出し生地７９の流動性が悪くなる上、押出し生
地７９内の木粉は樹脂に比べて摩擦抵抗が大きく、従来
のＴダイ式の成形ダイにおいては、成形ダイの内壁面も
摩擦抵抗が大きいので、成形ダイの内壁面を接触して流
動する木粉は大きな抵抗を受けることになり円滑に流動
しないため押出し生地７９の混練状態を粗密にし巣を形
成するなどの悪影響を及ぼすものであったが、本発明の
成形ダイ１０においては成形室２２の内壁面に表面が平
滑で摩擦係数の小さいフッ素樹脂のシート２４を設けた
ことにより、押出し生地７９の木粉は成形室２２の内壁
面から大きな抵抗を受けることなく円滑に流動するの
で、押出し生地７９に前述したような悪影響を及ぼすこ
となく押出し生地７９は均一・高密度の良好な混練状態
で成形室２２内を押出される。Since the extruded dough 79 is cooled in the molding section 21, the fluidity of the extruded dough 79 is deteriorated, and the wood powder in the extruded dough 79 has a larger frictional resistance than the resin, and the conventional T-die type molding is performed. In the die, since the inner wall surface of the forming die also has a large frictional resistance, the wood powder flowing in contact with the inner wall surface of the forming die receives a large resistance and does not flow smoothly. Although it had a bad influence such as forming a cavity, in the molding die 10 of the present invention, by providing the fluorine resin sheet 24 having a smooth surface and a small friction coefficient on the inner wall surface of the molding chamber 22, Since the wood powder of the extruded dough 79 smoothly flows without receiving a great resistance from the inner wall surface of the molding chamber 22, the extruded dough 7 does not have the above-mentioned adverse effect on the extruded dough 7. It is extruded molding chamber 22 in good kneading state of uniform and high density.
【０１２９】また、上述したように押出し生地７９の木
粉に対する抵抗力が少なくなり押出し生地７９は均一な
密度で成形されるので、製品としての成形板２９である
木質合成板の表面にはいわゆる肌荒れが生じることなく
平滑な面に仕上がる。Further, as described above, the resistance of the extruded dough 79 to the wood powder is reduced and the extruded dough 79 is molded with a uniform density. Finishes on a smooth surface without rough skin.
【０１３０】また、従来は、押出し生地７９の木粉が成
形ダイ内で円滑に流動しないために成形ダイのヒータの
熱で木粉が焼けてこげ茶色に変色したが、本発明は上述
したように押出し生地７９の木粉が円滑に流動するの
で、木粉が焼けることなく耐衝撃性など品質特性の低下
が生じない。Conventionally, since the wood powder of the extruded dough 79 does not flow smoothly in the molding die, the wood powder is burned and discolored dark brown by the heat of the heater of the molding die, but the present invention is as described above. Further, since the wood powder of the extruded dough 79 flows smoothly, the wood powder is not burnt and the quality characteristics such as impact resistance are not deteriorated.
【０１３１】(2)フッ素樹脂は金属に比べて熱伝導係数
が低いので、徐冷効果があり、押出し生地７９の冷却時
の歪みを抑える作用をする。(2) Since the fluororesin has a lower coefficient of thermal conductivity than metal, it has a slow cooling effect and acts to suppress distortion of the extruded material 79 when it is cooled.
【０１３２】成形ダイ１０の成形室２２は冷却管２５内
を流れる冷却水により冷却されるが、フッ素樹脂は金属
に比べて熱伝導係数が低いので、成形室２２の冷却温度
が成形室２２の内壁面に直接的に急速に熱伝導されない
ため、成形室２２内の押出し生地７９は急冷されず徐冷
されることになる。したがって押出し生地７９が急冷さ
れるときに生じる大きな歪みの発生は防止され、製品と
しての成形板２９である木質合成板の歪みが少なくなる
と同時に、表面が平滑となる。The molding chamber 22 of the molding die 10 is cooled by the cooling water flowing through the cooling pipe 25. However, since the fluororesin has a lower thermal conductivity coefficient than metal, the cooling temperature of the molding chamber 22 is lower than that of the molding chamber 22. Since the heat is not directly and rapidly conducted to the inner wall surface, the extruded material 79 in the molding chamber 22 is not rapidly cooled but gradually cooled. Therefore, the occurrence of a large distortion that occurs when the extruded dough 79 is rapidly cooled is prevented, and the distortion of the wooden synthetic plate that is the molded plate 29 as a product is reduced, and at the same time the surface becomes smooth.
【０１３３】さらに加えて、成形ダイ１０の成形部２１
に冷却管２５などの冷却手段を設けたので、従来の押出
成形法やカレンダー成形法のように成形後、成形板を冷
却ロール等で冷却したり補正ロール等で歪みを取る必要
がなく、押出し生地７９が成形ダイ１０のダイ出口２３
から押出されたときに内部残留応力の少ない木質合成板
の完成品が成形される。したがって、本発明の木質合成
板の押出成形方法は、従来の押出成形法やカレンダー成
形法で成形された木質合成板のような経年的な反りやね
じれ等の歪みが生じない。In addition, the molding section 21 of the molding die 10
Since the cooling means such as the cooling pipe 25 is provided in the extruding machine, it is not necessary to cool the molded plate with a cooling roll or the like or to remove distortion with a correction roll after molding, as in the conventional extrusion molding method or calender molding method. The dough 79 is the die exit 23 of the forming die 10.
When it is extruded from the above, a finished product of the wood-made synthetic board with a small internal residual stress is formed. Therefore, according to the extrusion molding method of a wood-based synthetic board of the present invention, distortions such as warpage and twist over time, unlike the wood-based synthetic board formed by the conventional extrusion molding method or calendar molding method, do not occur.
【０１３４】なお、いわゆるＴダイ式の成形ダイによる
押出成形法においては、押出機で混練された押出し生地
７９が比較的小径の押出ダイ７８から幅狭で細長な矩形
状を成す成形部へと急激な断面変化をする導入部内を流
動し次いで幅狭な成形部内を比較的長い距離を流動する
ので、従来のいわゆるＴダイ式の成形ダイによる押出成
形法では、木粉を多量に混入した樹脂の成形は不可能で
あったが、本発明は、上述したようにフッ素樹脂の優れ
た性質を充分に活かしていわゆるＴダイ式の成形ダイに
よる多量の木粉を含有した木質合成板の押出成形を行う
ことができる。In the extrusion molding method using a so-called T-die type molding die, the extruded dough 79 kneaded by the extruder moves from the relatively small diameter extrusion die 78 to the narrow and elongated rectangular shaped molding portion. In the extrusion molding method using a conventional so-called T-die type molding die, a resin containing a large amount of wood powder is used because it flows in the introduction part that undergoes a sudden cross-sectional change and then flows in a narrow molding part for a relatively long distance. However, the present invention makes full use of the excellent properties of the fluororesin as described above, and thus the present invention extrudes a synthetic wood board containing a large amount of wood powder with a so-called T-die type molding die. It can be performed.
【０１３５】〔成形ダイ１０ａ内の作用〕前述した押出
ダイ１９を成形ダイ１０ａの導入孔１２ａに連通した場
合、押出機７０のスクリーン部１６の出口より押し出さ
れた押出し生地７９は、アダプタ１７のヒータ１４ａで
加熱保温されながら連通孔を経て押出ダイ１９から成形
ダイ１０ａの導入孔１２ａ内へ流動する。前記連通孔の
断面変化は高さ方向のみであるので、押出し生地７９の
流動状態は複雑ではない。次いで、導入孔１２ａの高さ
が成形室２２の高さと同じで、導入孔１２ａ内での断面
変化は幅方向への変化のみであるので、成形ダイ１０ａ
の導入孔１２ａ内の押出し生地７９の流動状態は、前述
実施例の成形ダイ１０のように高さ方向と幅方向の両方
で断面変化を有する導入孔１２及び導入室１３に比較し
て複雑ではない。したがって押出ダイ１９および成形ダ
イ１０ａの導入孔１２ａ内の押出し生地７９の流動状態
はより一層良好である。他は前述した成形ダイ１０の作
用と同様である。[Operation in Molding Die 10a] When the above-mentioned extrusion die 19 is communicated with the introduction hole 12a of the molding die 10a, the extrusion material 79 extruded from the outlet of the screen portion 16 of the extruder 70 is the same as that of the adapter 17. It flows from the extrusion die 19 into the introduction hole 12a of the molding die 10a through the communication hole while being heated and kept warm by the heater 14a. Since the cross-sectional change of the communication hole is only in the height direction, the flow state of the extruded material 79 is not complicated. Next, since the height of the introduction hole 12a is the same as the height of the molding chamber 22 and the cross-sectional change in the introduction hole 12a is only the change in the width direction, the molding die 10a
The flow state of the extruded material 79 in the introduction hole 12a is more complicated than that of the introduction hole 12 and the introduction chamber 13 having the cross-sectional changes in both the height direction and the width direction like the molding die 10 of the above-described embodiment. Absent. Therefore, the flow condition of the extrusion material 79 in the introduction holes 12a of the extrusion die 19 and the molding die 10a is much better. Others are the same as the operation of the molding die 10 described above.
【０１３６】〔案内板を設けた成形ダイ内の作用〕さら
に、導入孔１２ａ内に案内板１５を設けた場合、アダプ
タ１７の押出ダイ１９から吐出した押出し生地７９の流
れは図１２の矢印に示すように、案内板１５の後方端面
に当り、次いで押出し生地７９は案内板１５の後方縁と
導入孔１２ａの後方壁面との間に形成された流路を経て
導入孔１２ａの幅方向の両側へと進行し、この流路内の
押出し生地７９の一部は案内板１５と導入孔１２ａの上
壁面との隙間を経て成形室２２の方向へ進行する。した
がって、導入孔１２ａ内に案内板１５を設けたことによ
って押出し生地７９の流動状態が比較的単純な流れにな
り、原料によっては、押出し生地７９が押し出し方向
で、中央部と端部で異なる線膨張をして分子配向を異に
することを防ぎ、線膨張の均質化を図り、分子配向を制
御して、成形部２１の成形室２２内へ均等に拡散され、
均一な密度で押出される成形ダイ１１ａ内で成形部２１
の成形室２２内へ均等に拡散され、より一層均一な密度
で押し出される。[Operation in Molding Die with Guide Plate] Further, when the guide plate 15 is provided in the introduction hole 12a, the flow of the extruded dough 79 discharged from the extrusion die 19 of the adapter 17 is indicated by the arrow in FIG. As shown, the extruded material 79 hits the rear end surface of the guide plate 15, and the extruded material 79 then passes through the flow path formed between the rear edge of the guide plate 15 and the rear wall surface of the introduction hole 12a to both sides in the width direction of the introduction hole 12a. Then, a part of the extruded material 79 in this flow path advances toward the molding chamber 22 through the gap between the guide plate 15 and the upper wall surface of the introduction hole 12a. Therefore, by providing the guide plate 15 in the introduction hole 12a, the flow state of the extruded dough 79 becomes a relatively simple flow, and depending on the raw material, the extruded dough 79 has different lines at the central portion and the end portion in the extruding direction. It is prevented from expanding and different molecular orientations, homogenizing linear expansion, controlling the molecular orientation, and evenly diffusing into the molding chamber 22 of the molding unit 21,
In the molding die 11a which is extruded with a uniform density, the molding portion 21
Is evenly diffused into the molding chamber 22 and is extruded with a more uniform density.
【０１３７】また、案内板１５の表面にはフッ素樹脂の
シートを貼設しているので案内板１５の表面を通過する
押出し生地７９に対する抵抗は小さいので、押出し生地
７９内の特に摩擦抵抗の大きい木粉は案内板１５の表面
で大きな抵抗を受けることなく円滑に流動するので、押
出し生地７９は均一で高密度の混練状態を保ちながら成
形ダイの成形室２２へ押し出される。Further, since the fluororesin sheet is stuck on the surface of the guide plate 15, the resistance to the extruded cloth 79 passing through the surface of the guide plate 15 is small, so that the extruded cloth 79 has a particularly large frictional resistance. Since the wood powder smoothly flows on the surface of the guide plate 15 without receiving a large resistance, the extruded material 79 is extruded into the molding chamber 22 of the molding die while maintaining a uniform and high-density kneaded state.
【０１３８】特に、本発明の木質合成粉を用いて本発明
の押出成形を行なった場合は、木質合成粉は個々の木粉
の全表面に樹脂が付着したものであるので、押出機７０
内では個々の木粉間に樹脂が満遍なく浸透した良い混練
状態の押出し生地７９が形成されるため、この押出し生
地内の特に木粉が押出機内及び成形ダイ内の壁面で大き
な抵抗を受けずに円滑に流動し、より一層均一で高密度
の木質合成板が形成される。In particular, when the extrusion molding of the present invention is carried out using the woody synthetic powder of the present invention, since the resin is attached to the entire surface of each woody powder, the extruder 70 is used.
Since the extruded dough 79 in a well-kneaded state in which the resin is evenly penetrated between the individual wood flour is formed therein, the wood flour in this extruded dough does not receive a large resistance particularly on the wall surfaces in the extruder and the molding die. It flows smoothly and forms a more uniform and dense wood synthetic board.
【０１３９】さらに、後述実施例のブレーキ手段によ
り、成形ダイのダイ出口２３より押出された成形板２９
に対して押出し方向と反対方向へ抵抗力を加えているの
で、高密度で均一な木質合成板が成形される。Further, the molding plate 29 extruded from the die outlet 23 of the molding die by the braking means of the embodiment described later.
Since a resistance force is applied in the direction opposite to the extrusion direction, a high-density and uniform wood synthetic board is formed.
【０１４０】２−３．成形板の押出しの抑制 ２−３−１．〔ブレーキ手段３０〕 前述した成形ダイ１０のダイ出口２３より押出された成
形板２９に対してブレーキ手段３０により押出し方向と
反対方向へ抵抗力を加えて、成形板２９の押出し力を抑
制する。以下に、ブレーキ手段３０の実施例を図を参照
して説明する。2-3. Suppression of extrusion of molded plate 2-3-1. [Brake Means 30] A braking force is applied to the forming plate 29 extruded from the die exit 23 of the forming die 10 by the braking means 30 in the direction opposite to the extruding direction to suppress the extruding force of the forming plate 29. Hereinafter, an embodiment of the braking means 30 will be described with reference to the drawings.
【０１４１】図５において、３１はピンチローラで、ゴ
ム製のローラで成り、成形板２９の表裏面の幅全長を一
対の固定ピンチローラ３１ａ、自在ピンチローラ３１ｂ
で挟持した状態で当接している。固定ピンチローラ３１
ａ，自在ピンチローラ３１ｂはそれぞれ、軸３２の両端
が図６に示すように、軸受３４、３４で軸承されてい
る。In FIG. 5, 31 is a pinch roller, which is a rubber roller, and the total length of the front and back surfaces of the molding plate 29 is determined by a pair of fixed pinch rollers 31a and a free pinch roller 31b.
It is abutted in the state of being sandwiched by. Fixed pinch roller 31
As shown in FIG. 6, both ends of the shaft 32 of the a and the free pinch roller 31b are supported by bearings 34, 34, respectively.
【０１４２】固定ピンチローラ３１ａの両端の軸受３
４、３４は軸受固定フレーム３６に固定されており、軸
受３４の両側にはそれぞれ図７に示すように２本のガイ
ドシャフト３８、３８が前記軸受固定フレーム３６に立
設している。これらのガイドシャフト３８、３８にそれ
ぞれバネ４３、４３を嵌挿する。Bearings 3 at both ends of the fixed pinch roller 31a
Reference numerals 4 and 34 are fixed to a bearing fixing frame 36, and two guide shafts 38 and 38 are erected on the bearing fixing frame 36 on both sides of the bearing 34, as shown in FIG. The springs 43, 43 are fitted into the guide shafts 38, 38, respectively.
【０１４３】そして、自在ピンチローラ３１ｂの両端の
軸受３４、３４は移動自在な軸受自在フレーム３７に固
定され、軸受自在フレーム３７の両端には貫通孔が設け
られ、この貫通孔内にガイドシャフト３８、３８を挿通
して軸受自在フレーム３７を前記バネ４３、４３に当接
する。The bearings 34, 34 at both ends of the free pinch roller 31b are fixed to a freely movable bearing free frame 37, and through holes are provided at both ends of the free bearing frame 37, and the guide shaft 38 is provided in the through holes. , 38 through which the bearing-supporting frame 37 abuts against the springs 43, 43.
【０１４４】なお、固定ピンチローラ３１ａの軸心と自
在ピンチローラ３１ｂの軸心はそれぞれ前記ガイドシャ
フト３８、３８と平行線上に位置し、成形板２９が自在
ピンチローラ３１ｂの外周面と固定ピンチローラ３１ａ
の外周面の略接線方向に位置するように、自在ピンチロ
ーラ３１ｂが固定ピンチローラ３１ａに接離可能に設け
られている。The axis of the fixed pinch roller 31a and the axis of the free pinch roller 31b are located on the lines parallel to the guide shafts 38, 38, respectively, and the molding plate 29 is provided with the outer peripheral surface of the free pinch roller 31b and the fixed pinch roller. 31a
A free pinch roller 31b is provided so as to be able to come into contact with and separate from the fixed pinch roller 31a so as to be positioned in a substantially tangential direction of the outer peripheral surface of the.
【０１４５】なお、バネ４３、４３は圧縮バネであり、
このバネ４３、４３により固定ピンチローラ３１ａと自
在ピンチローラ３１ｂ間に成形板２９を挿通可能な間隙
を形成する方向に軸受自在フレーム３７を付勢する。さ
らに、ガイドシャフト３８、３８の先端からそれぞれ前
記バネ４３の強さより大きい強さを有する圧縮バネ４
４、４４を嵌挿し、このバネ４４、４４を押圧するよう
にガイドシャフト３８、３８の先端にナット４９、４９
を螺合し、軸受自在フレーム３７すなわち自在ピンチロ
ーラ３１ｂを固定ピンチローラ３１ａに圧接する方向に
付勢する。このように自在ピンチローラ３１ｂは固定ピ
ンチローラ３１ａに圧接離自在に設けられる。なお、前
記バネ４４を設けずにナット４９、４９で直接軸受自在
フレーム３７を押圧してもよい。The springs 43, 43 are compression springs,
The springs 43, 43 urge the bearing-free frame 37 in a direction to form a gap into which the molding plate 29 can be inserted between the fixed pinch roller 31a and the free pinch roller 31b. Further, the compression springs 4 each having a strength greater than that of the spring 43 from the tips of the guide shafts 38, 38.
4 and 44 are fitted and inserted into the tips of the guide shafts 38 and 38 so as to press the springs 44 and 44.
Is screwed, and the bearing free frame 37, that is, the free pinch roller 31b is urged in a direction of being pressed against the fixed pinch roller 31a. In this way, the free pinch roller 31b is provided so as to come into contact with and separate from the fixed pinch roller 31a. Note that the bearing free frame 37 may be directly pressed by the nuts 49, 49 without providing the spring 44.
【０１４６】さらに、固定ピンチローラ３１ａの軸３２
の両端には、外周にブレーキベルト３５に嵌合するＶ溝
を備えたブレーキドラム３３を設け、このブレーキドラ
ム３３の外周のＶ溝にブレーキベルト３５などの摩擦体
を半周ほど巻回する。ブレーキベルト３５はその一端に
設けたブレーキベルトホルダ３９を軸受固定フレーム３
６の固定盤４２に固定したシャフト４１に軸承し、ブレ
ーキベルト３５の他端にフランジ付きのブレーキテンシ
ョナー４０を設け、このブレーキテンショナー４０の先
端を固定盤４２に固定されたテンションブラケット４６
の貫通孔に挿通し、ブレーキテンショナー４０の先端に
はレバー４８を備えたテンショナー４７を偏心軸承す
る。Further, the shaft 32 of the fixed pinch roller 31a.
Brake drums 33 having V-grooves fitted to the brake belts 35 are provided on both ends of the brake drums 35, and friction bodies such as the brake belts 35 are wound around the V-grooves of the brake drums 33 about half a turn. The brake belt 35 has a brake belt holder 39 provided at one end thereof, and the bearing fixing frame 3
6 is supported by a shaft 41 fixed to a fixed plate 42, a brake tensioner 40 with a flange is provided at the other end of the brake belt 35, and the tip of the brake tensioner 40 is fixed to the fixed plate 42 by a tension bracket 46.
The brake tensioner 40 is eccentrically supported by a tensioner 47 having a lever 48 at the tip of the brake tensioner 40.
【０１４７】なお、前記ブレーキテンショナー４０のフ
ランジとテンションブラケット４６との間には、ブレー
キドラム３３に巻回したブレーキベルト３５を緩める方
向に付勢するバネ４５を設けている。前記レバー４８を
図７の反時計回り方向に回動してテンショナー４７を回
動すると、テンショナー４７は偏心軸承されているの
で、バネ４５の付勢力に抗してブレーキテンショナー４
０を介してブレーキベルト３５を図７の紙面下方へ引張
る。A spring 45 is provided between the flange of the brake tensioner 40 and the tension bracket 46 for urging the brake belt 35 wound around the brake drum 33 in a loosening direction. When the tensioner 47 is rotated by rotating the lever 48 in the counterclockwise direction in FIG. 7, the tensioner 47 is eccentrically supported, so that the brake tensioner 4 resists the urging force of the spring 45.
7, the brake belt 35 is pulled downward in the plane of FIG.
【０１４８】すなわち、ブレーキベルト３５はブレーキ
ドラム３３のＶ溝内に嵌合する方向に引張られるので、
ブレーキベルト３５がブレーキドラム３３のＶ溝内に嵌
合してブレーキドラム３３の回転力を抑制する。また、
前記レバー４８でテンショナー４７を図７の時計回り方
向に回動すると、バネ４５の付勢力によりブレーキテン
ショナー４０はブレーキベルト３５を図７の紙面上方へ
押し上げ、ブレーキベルト３５をブレーキドラム３３の
Ｖ溝から離反させ、ブレーキドラム３３の回転力の抑制
を解除する。That is, since the brake belt 35 is pulled in the direction of fitting in the V groove of the brake drum 33,
The brake belt 35 is fitted in the V groove of the brake drum 33 to suppress the rotational force of the brake drum 33. Also,
When the tensioner 47 is rotated clockwise by the lever 48 in FIG. 7, the brake tensioner 40 pushes the brake belt 35 upward in the plane of FIG. And the suppression of the rotational force of the brake drum 33 is released.
【０１４９】なお、テンショナー４７の回動停止位置に
応じてブレーキドラム３３のＶ溝とブレーキベルト３５
の嵌合状態が緩く或いはきつくなりブレーキドラム３３
の回転力を抑制する力が調整される。The V groove of the brake drum 33 and the brake belt 35 are set in accordance with the rotation stop position of the tensioner 47.
Brake drum 33 becomes loose or tight
The force that suppresses the rotational force of is adjusted.
【０１５０】なお、前記テンショナー４７に換えて、前
記ブレーキテンショナー４０の先端に締付ナットを螺合
し、この締付ナットを回してブレーキドラム３３のＶ溝
とブレーキベルト３５との嵌合状態を調整しブレーキド
ラム３３の回転力の抑制力を調整することもできる。Instead of the tensioner 47, a tightening nut is screwed on the tip of the brake tensioner 40, and this tightening nut is turned to set the V groove of the brake drum 33 and the brake belt 35 in a fitted state. It is also possible to adjust and adjust the suppressing force of the rotational force of the brake drum 33.
【０１５１】本実施例では、以上の一対の固定ピンチロ
ーラ３１ａ、自在ピンチローラ３１ｂでなるピンチロー
ラ３１を、図５及び図６に示すように、成形板２９の押
出し方向に適宜間隔をおいて３対のピンチローラ３１を
設けているが、この数に限定されず、機能を達成すれば
何対でもよい。In this embodiment, the pair of fixed pinch rollers 31a and the free pinch roller 31b are arranged at appropriate intervals in the pushing direction of the molding plate 29 as shown in FIGS. 5 and 6. Although three pairs of pinch rollers 31 are provided, the number is not limited to this and any number of pairs may be used as long as the function is achieved.
【０１５２】また、本実施例では、固定ピンチローラ３
１ａの両端に前述したブレーキ手段３０を設けている
が、固定ピンチローラ３１ａの一方端のみに設けること
もできる。しかし固定ピンチローラ３１ａの回転力を確
実に抑制するという点で、固定ピンチローラ３１ａの両
端にブレーキ手段３０を設けることが好ましい。Further, in this embodiment, the fixed pinch roller 3
Although the above-described braking means 30 is provided at both ends of 1a, it may be provided only at one end of the fixed pinch roller 31a. However, from the viewpoint of reliably suppressing the rotational force of the fixed pinch roller 31a, it is preferable to provide the braking means 30 at both ends of the fixed pinch roller 31a.
【０１５３】また、ブレーキ手段３０に他の実施例とし
て、成形板２９の幅方向全長に及ぶ長さのブレーキ板
を、成形板２９の表裏面に圧接離自在に設け、一対の前
記ブレーキ板で成形板２９の表裏面を圧接して成形板２
９の押出し力を抑制することができる。なお、前記ブレ
ーキ板は、例えば鉄製あるいは木製のフレームに板状の
ゴムや樹脂などの弾性体を固定し、この弾性体の表面を
成形板２９に当接させることができる。なお、これらの
一対のブレーキ板でなるブレーキ手段３０を何対設けて
もよい。As another embodiment of the braking means 30, a brake plate having a length that extends over the entire width of the molding plate 29 in the width direction is provided on the front and back surfaces of the molding plate 29 so that they can be pressed and separated from each other. Forming plate 2 by pressing the front and back surfaces of forming plate 29
The extrusion force of 9 can be suppressed. The brake plate may be formed by fixing a plate-shaped elastic body such as rubber or resin to a steel or wooden frame, and contacting the surface of the elastic body with the molding plate 29. It should be noted that any number of pairs of braking means 30 composed of a pair of these brake plates may be provided.
【０１５４】〔成形板の押出しの抑制による作用〕バネ
４３，４３の付勢力に抗してナット４９，４９を締め
て、バネ４４，４４を介して軸受自在フレーム３７を図
７の紙面下方へ押圧し、自在ピンチローラ３１ｂを成形
板２９を介して固定ピンチローラ３１ａへ圧接する。固
定ピンチローラ３１ａと自在ピンチローラ３１ｂは成形
板２９の押出し力により図５の矢印の方向に回転する。
この固定ピンチローラ３１ａの回転に伴ってブレーキド
ラム３３が回転する。[Operation by Suppressing Extrusion of Forming Plate] The nuts 49, 49 are tightened against the urging force of the springs 43, 43, and the free-bearing frame 37 is moved downward through the springs 44, 44 in the plane of FIG. By pressing, the free pinch roller 31b is brought into pressure contact with the fixed pinch roller 31a via the forming plate 29. The fixed pinch roller 31a and the free pinch roller 31b rotate in the direction of the arrow in FIG. 5 by the pushing force of the forming plate 29.
The brake drum 33 rotates as the fixed pinch roller 31a rotates.
【０１５５】前記レバー４８を図７の反時計回り方向に
回動してテンショナー４７を回動し、バネ４５の付勢力
に抗してブレーキテンショナー４０を介してブレーキベ
ルト３５を図７の紙面下方へ引張り、ブレーキドラム３
３の回転力を抑制することにより、成形ダイ１０のダイ
出口２３より押出された成形板２９をピンチローラ３１
の固定ピンチローラ３１ａと自在ピンチローラ３１ｂ間
に挿入され、固定ピンチローラ３１ａと自在ピンチロー
ラ３１ｂ間に挟持された成形板２９の押出し力が抑制さ
れる。The lever 48 is rotated counterclockwise in FIG. 7 to rotate the tensioner 47, and the brake belt 35 is moved downward through the brake tensioner 40 against the urging force of the spring 45. Pull to, brake drum 3
By suppressing the rotational force of the molding die 3, the molding plate 29 extruded from the die outlet 23 of the molding die 10 is moved to the pinch roller 31.
The pushing force of the molding plate 29 inserted between the fixed pinch roller 31a and the free pinch roller 31b and sandwiched between the fixed pinch roller 31a and the free pinch roller 31b is suppressed.
【０１５６】図５及び図６の二点鎖線の矢印で示すよう
に固定ピンチローラ３１ａと自在ピンチローラ３１ｂか
ら成形板２９の押出し力に抗する抑制力が発生し、この
抑制力は成形ダイ１０の成形部２１及び導入部１１内の
押出し生地７９に対して押出し方向と反対方向の力を与
える。押出し生地７９は冷却される前の流動性に富む状
態であるので、前記抑制力により、図６の一点鎖線に示
すように押出ダイ７８より吐出した押出し生地７９が、
その押出し方向よりむしろ成形ダイ１０の幅方向へ拡げ
られた状態で、しかも木粉の密度が極めて高くされた状
態で押出される。As shown by the two-dot chain line arrows in FIGS. 5 and 6, the fixed pinch roller 31a and the free pinch roller 31b generate a suppressing force against the pushing force of the molding plate 29, and this suppressing force is generated. A force in the direction opposite to the extrusion direction is applied to the extrusion material 79 in the forming section 21 and the introducing section 11. Since the extruded dough 79 is in a state of being rich in fluidity before being cooled, the extruded dough 79 discharged from the extrusion die 78 as shown by the one-dot chain line in FIG.
It is extruded in a state of being expanded in the width direction of the molding die 10 rather than in the extruding direction, and in a state in which the density of wood powder is extremely high.
【０１５７】前述したような本発明の木質合成板の押出
成形方法による成形板２９に前記抑制力を加えない場合
は、図６の二点鎖線に示すように押出し生地７９の押出
し方向に流動する割合が大きいのであり、このように成
形板２９に抑制力を加えない場合と上記のように成形板
２９に抑制力を加えた場合とを比較すると、両者の押出
し生地７９の流動する状態に顕著な違いがみられること
が分かる。When the above-mentioned restraining force is not applied to the forming plate 29 obtained by the above-described extrusion molding method for the wood-based synthetic plate of the present invention, the extruded dough 79 flows in the extruding direction as shown by the chain double-dashed line in FIG. Since the ratio is large, comparing the case where no restraining force is applied to the molding plate 29 and the case where the restraining force is applied to the molding plate 29 as described above, it is noticeable in the flowing state of both extruded dough 79. You can see the difference.
【０１５８】成形板２９に抑制力を加えた場合の本発明
の木質合成板の成形方法は、成形板２９に抑制力を加え
ない場合の本発明の木質合成板の成形方法に比較して、
押出し生地７９内の木粉の密度がさらにより一層高くな
り、成形ダイ１０の幅方向の全域に及んでより一層均一
な高密度の製品としての成形板２９である木質合成板が
成形される。なお、成形板２９に抑制力を加えた場合の
押出し速度は１時間当り４〜５ｍである。The method of molding the wood-based synthetic board of the present invention when a suppressing force is applied to the molding plate 29 is as follows:
The density of the wood powder in the extruded dough 79 is further increased, and the wood-synthesized board, which is the molding board 29 as a more uniform and high-density product over the entire width direction of the molding die 10, is molded. The extruding speed when a suppressing force is applied to the forming plate 29 is 4 to 5 m per hour.
【０１５９】したがって、従来、比較的小径の押出ダイ
７８から幅広で細長の矩形状の断面を成す成形室２２内
へ急激な断面変化を成す成形ダイ１０内に押出し生地７
９を高密度で均一な混練状態で押出すことは難しい問題
であったが、本発明の木質合成板の成形方法においては
成形板２９に抑制力を加えない場合もさることながら、
前記ブレーキ手段３０により成形板２９に押出し方向と
反対方向の抑制力を加える方法によって、より一層高密
度で均一な木質合成板を成形することが可能になったの
である。Therefore, conventionally, the extruded material 7 is extruded into the forming die 10 having a sharp cross-section change from the extrusion die 78 having a relatively small diameter into the forming chamber 22 having a wide and elongated rectangular cross section.
Although it was a difficult problem to extrude 9 in a high-density and uniform kneaded state, in the method of molding a wood-based synthetic board of the present invention, in addition to the case where no restraining force is applied to the molding board 29,
By the method of applying a restraining force to the forming plate 29 in the direction opposite to the extruding direction by the braking means 30, it becomes possible to form a more dense and uniform wooden synthetic plate.
【０１６０】２−３−２．〔ブレーキ手段３０ａ〕 ブレーキ手段の他の実施例について、前述したブレーキ
手段３０の実施例と同じ部材は同符号として以下に説明
する。2-3-2. [Brake Means 30a] With respect to another embodiment of the brake means, the same members as those in the above-described embodiment of the brake means 30 will be described below with the same reference numerals.
【０１６１】図１３及び図１４において、３本の自在ピ
ンチローラ３１ｂの軸の両端を軸承する軸受３４ａをそ
れぞれ、軸受固定フレーム３６に固定し、固定ピンチロ
ーラ３１ａを各軸に設けた歯車１１６と、この歯車１１
６に噛合する歯車１１７で連動し、３本の固定ピンチロ
ーラ３１ａのうち１本の固定ピンチローラ３１ａの軸に
パウダブレーキ１１５の入力軸を連結する。パウダブレ
ーキ１１５は、いわゆる電磁ブレーキであり、摩擦トル
クを電気的に微妙に調整できるものである。In FIGS. 13 and 14, bearings 34a that support both ends of the shafts of the three free pinch rollers 31b are respectively fixed to the bearing fixing frame 36, and the fixed pinch rollers 31a and the gear 116 provided on each shaft. , This gear 11
The input shaft of the powder brake 115 is connected to the shaft of one fixed pinch roller 31a among the three fixed pinch rollers 31a in cooperation with the gear 117 meshing with the gear 6. The powder brake 115 is a so-called electromagnetic brake, and can electrically finely adjust the friction torque.
【０１６２】さらに、軸受固定フレーム３６にフレーム
１１４を立設し、このフレーム１１４の壁面にガイド溝
を備えたブロック状のガイド体１１９を２本をそれぞ
れ、該１１９の軸線方向を上下方向に向けて略平行に設
け、各３本の自在ピンチローラ３１ｂの軸の両端を軸承
する軸受３４ｂを前記ガイド体１１９のガイド溝に沿っ
て上下動自在に設け、前記軸受３４ｂをそれぞれ、フレ
ーム１１４の上面に設けた３本のエアシリンダ１１８の
ロッドの先端に連結する。Further, the frame 114 is erected on the bearing fixing frame 36, and two block-shaped guide bodies 119 each having a guide groove are provided on the wall surface of the frame 114, and the axial direction of the 119 is directed vertically. Bearings 34b, which are provided substantially parallel to each other and support both ends of the shafts of the three free pinch rollers 31b, are vertically movable along the guide grooves of the guide body 119, and the bearings 34b are respectively provided on the upper surface of the frame 114. Are connected to the tips of the rods of the three air cylinders 118 provided in the.
【０１６３】したがって、シリンダ１１８の作動によ
り、３本の自在ピンチローラ３１ｂをそれぞれ、成形板
２９を介して固定ピンチローラ３１ａに加圧し、３本の
固定ピンチローラ３１ａの内１本の固定ピンチローラ３
１ａの軸はパウダブレーキ１１５により回転を抑制さ
れ、この固定ピンチローラ３１ａの軸に設けた歯車１１
６が他の２本の固定ピンチローラ３１ａ，３１ａの軸に
設けた歯車１１６，１１６に歯車１１７，１１７を介し
て噛合しているので、３本の固定ピンチローラ３１ａに
はパウダブレーキ１１５の摩擦トルクによる同一の回転
抑制力が作用する。Therefore, by operating the cylinder 118, each of the three free pinch rollers 31b is pressed against the fixed pinch roller 31a via the forming plate 29, and one of the three fixed pinch rollers 31a is fixed pinch roller 31a. Three
The rotation of the shaft 1a is suppressed by the powder brake 115, and the gear 11 provided on the shaft of the fixed pinch roller 31a.
6 meshes with the gears 116, 116 provided on the shafts of the other two fixed pinch rollers 31a, 31a via the gears 117, 117, so that the friction of the powder brake 115 with the three fixed pinch rollers 31a. The same rotation suppression force by the torque acts.
【０１６４】ちなみに、各固定ピンチローラ３１ａに加
えるシリンダ１１８の圧力は、成形する成形板２９の板
厚により調整する。同様に、パウダブレーキ１１５によ
り固定ピンチローラ３１ａの回転を抑制する摩擦トルク
も、成形する成形板２９の板厚により調整する。Incidentally, the pressure of the cylinder 118 applied to each fixed pinch roller 31a is adjusted by the plate thickness of the forming plate 29 to be formed. Similarly, the friction torque for suppressing the rotation of the fixed pinch roller 31a by the powder brake 115 is also adjusted by the plate thickness of the forming plate 29 to be formed.
【０１６５】例えば、本実施例では成形板２９の板厚が
１２mmのとき、シリンダ１１８のエア圧力は３．５〜４
kg/cm2で、１本の自在ピンチローラ３１ｂが成形板２９
を介して固定ピンチローラ３１ａに加わる荷重は約１，
０００kgとなる。したがって、３本の自在ピンチローラ
３１ｂで合計３，０００kgの荷重が成形板２９に加わる
ことになり、また、パウダブレーキ１１５の摩擦トルク
は１０kg/mである。For example, in this embodiment, when the thickness of the molding plate 29 is 12 mm, the air pressure of the cylinder 118 is 3.5-4.
With kg / cm 2 , one free pinch roller 31b is used for forming plate 29.
The load applied to the fixed pinch roller 31a via
It will be 000 kg. Therefore, a total load of 3,000 kg is applied to the molding plate 29 by the three free pinch rollers 31b, and the friction torque of the powder brake 115 is 10 kg / m.
【０１６６】成形板２９の板厚が３０mmのとき、シリン
ダ１１８のエア圧力は８〜１０kg/cm2で、１本の自在ピ
ンチローラ３１ｂが固定ピンチローラ３１ａに加わる荷
重は約２，０００kgとなる。したがって、３本の自在ピ
ンチローラ３１ｂで合計６，０００kgの荷重が成形板２
９に加わることになり、また、パウダブレーキ１１５の
摩擦トルクは２０kg/mである。When the thickness of the forming plate 29 is 30 mm, the air pressure of the cylinder 118 is 8 to 10 kg / cm 2 , and the load applied by the single pinch roller 31b to the fixed pinch roller 31a is about 2,000 kg. . Therefore, a total load of 6,000 kg is generated by the three free pinch rollers 31b.
In addition, the friction torque of the powder brake 115 is 20 kg / m.
【０１６７】したがって、パウダブレーキ１１５の摩擦
トルクは成形板２９の押出し力に対する抑制力と成り、
成形ダイ１０及び１０ａの導入部１１内の押出し生地７
９をより一層高密度で均一な状態にし、この均一で高密
度の押出し生地７９は押出機７０による押出し生地７９
の押出し力により前記ブレーキ手段３０ａの抑制力に抗
して前進し、成形室２２内で冷却され成形板２９が成形
される。この成形板２９はパウダブレーキ１１５の抑制
力に抗して前記固定ピンチローラ３１ａ及び自在ピンチ
ローラ３１ｂを回転させながら前進する。Therefore, the friction torque of the powder brake 115 serves as a restraining force against the pushing force of the molding plate 29,
Extruded dough 7 in the introduction part 11 of the molding dies 10 and 10a
9 is made into a more dense and uniform state, and this uniform and high-density extruded dough 79 is extruded by the extruder 70.
Is pushed forward against the restraining force of the brake means 30a, cooled in the forming chamber 22 and the forming plate 29 is formed. The forming plate 29 advances while rotating the fixed pinch roller 31a and the free pinch roller 31b against the restraining force of the powder brake 115.
【０１６８】以上のように本実施例のブレーキ手段３０
ａは、成形する成形板２９の板厚に応じて、シリンダ１
１８により自在ピンチローラ３１ｂの加圧力を簡単に調
整でき、また、パウダブレーキ１１５により固定ピンチ
ローラ３１ａの抑制力を簡単に調整できるという点で、
前述実施例のブレーキ手段３０より好ましい。As described above, the braking means 30 of this embodiment
a is the cylinder 1 depending on the thickness of the forming plate 29 to be formed.
18, the pressing force of the free pinch roller 31b can be easily adjusted, and the suppressing force of the fixed pinch roller 31a can be easily adjusted by the powder brake 115.
It is preferable to the braking means 30 of the above-described embodiment.
【０１６９】この後、前記製品としての成形板２９であ
る木質合成板をカッター、シャーリング、鋸盤等の切断
機で所望の長さで切断する。薄肉の成形板２９であれば
カッターなどの切断機を使用し、１２mmなどの厚肉の成
形板２９であればシャーリング、鋸盤等の切断機で切断
する。After that, the wooden synthetic board which is the molded board 29 as the product is cut to a desired length by a cutting machine such as a cutter, a shearing machine, a saw machine, or the like. A cutting machine such as a cutter is used for the thin molded plate 29, and a shearing machine or a saw machine is used for the thick molded plate 29 of 12 mm or the like.
【０１７０】図８（Ｂ）は、生産能力の向上を意図した
本発明のさらに他の実施例を示すもので、一の押出機７
０からの押出ダイ７８に対して図８（Ａ）と略同様の構
成の成形ダイ１０，１０を連通したものである。FIG. 8B shows still another embodiment of the present invention intended to improve the production capacity. One extruder 7 is shown in FIG.
The molding dies 10, 10 having substantially the same structure as in FIG. 8A are connected to the extrusion die 78 from 0.
【０１７１】３．製造例 ３−１．木質合成粉の製造例 本例では、原材料の５５wt％は平均粒径２０メッシュ以
下で嵩比重が０．２の木粉を３０kg（このときの木粉は
水分を約８wt％含む）および木酸ガスの中和剤となるア
ンモニア、フェノール、メラミン等の尿素の４０％濃度
の水溶液を０．３kg（木粉に対する尿素の割合は１wt％
である）、炭酸カルシウムを３kgで成り、残りの４５wt
％は熱可塑性樹脂成形材のＰＰ（ポリプロピレン）を２
７kgで成る。3. Manufacturing Example 3-1. Example of production of synthetic wood powder In this example, 55 wt% of the raw material has an average particle size of 20 mesh or less and a bulk specific gravity of 30 kg of wood flour (at this time, the wood flour contains about 8 wt% of water) and wood acid. 0.3 kg of a 40% aqueous solution of urea such as ammonia, phenol, melamine, etc., which is a gas neutralizer (the ratio of urea to wood flour is 1 wt%
3 kg of calcium carbonate and the remaining 45 wt.
% Is 2 (PP) of thermoplastic resin molding material
It consists of 7 kg.
【０１７２】なお、前記木粉の平均粒径とは、当該木粉
の累積重量パーセント分布の５０重量パーセントの粒子
径を意味する。The average particle size of the wood flour means a particle size of 50 weight percent of the cumulative weight percent distribution of the wood flour.
【０１７３】上記のミキサー８０で混練する工程を以下
に詳しく説明する。 (1)モータを回して撹拌衝撃翼８５，８６，８７および
スクレイパー８４を高速回転し、上蓋８２を開放して投
入口９４から木粉３０kgを投入し、前記尿素０．３kgを
少量づつ添加する。The step of kneading with the above mixer 80 will be described in detail below. (1) Rotate the motor to rotate the stirring impact blades 85, 86, 87 and scraper 84 at high speed, open the upper lid 82, throw in 30 kg of wood powder from the charging port 94, and add 0.3 kg of the urea little by little. .
【０１７４】(2)約１分後、５〜１０wt％の炭酸カルシ
ウムを３kgを添加し、１０〜２０分程度混練する。これ
らの炭酸カルシウム及び酸化チタンを添加すると原材料
の比重が重くなるので、高速回転する撹拌衝撃翼による
剪断力が高くなるため剪断力による摩擦熱の発生が向上
し、ミキサー８０内の温度は１８０〜１９０℃になり乾
燥され原材料の水分を１wt％以下、好ましくは０．３wt
％以下に減少させる。ちなみに、本実施例では前記木粉
を投入してから１７分０９秒後にミキサー本体８１内の
温度は、１９０℃で、原材料の水分が０．１wt％であっ
た。なお、木粉は撹拌衝撃翼８５，８６，８７の高速回
転により破砕され、このとき木粉から発生した多量の水
蒸気ないしは木酸ガスは上蓋８２に設けたガス排出管９
５より排出される。(2) After about 1 minute, 3 kg of 5 to 10 wt% calcium carbonate is added and kneaded for about 10 to 20 minutes. When these calcium carbonate and titanium oxide are added, the specific gravity of the raw material becomes heavy, so that the shearing force by the stirring impact blades rotating at high speed becomes high, so that the generation of frictional heat due to the shearing force is improved, and the temperature in the mixer 80 is 180- When it reaches 190 ° C and is dried, the water content of the raw material is 1 wt% or less, preferably 0.3 wt
% Or less. By the way, in this example, the temperature in the mixer body 81 was 190 ° C. and the water content of the raw material was 0.1 wt% 17 minutes and 09 seconds after the wood powder was charged. The wood powder is crushed by the high-speed rotation of the stirring impact blades 85, 86, 87, and a large amount of steam or wood acid gas generated from the wood powder at this time is exhausted from the gas exhaust pipe 9 provided on the upper lid 82.
It is discharged from 5.
【０１７５】(3)次いで、熱可塑性樹脂成形材のＰＰ
（ポリプロピレン）２５kgをミキサー本体８１内に投入
し、５〜８分間混練する（本実施例では約８分間混練し
た）。なお、熱可塑性樹脂成形材の形態は、本実施例で
は直径３mm程度の大きさの粒状から成るペレットを使用
している。(3) Next, PP of thermoplastic resin molding material
25 kg of (polypropylene) is put into the mixer main body 81 and kneaded for 5 to 8 minutes (kneading for about 8 minutes in this embodiment). The thermoplastic resin molding material used in the present embodiment is a granular pellet having a diameter of about 3 mm.
【０１７６】なお、熱可塑性樹脂成形材のＰＰの融点は
１６５℃であり、この工程におけるミキサー本体８０内
の温度は１８６℃であった。The melting point of PP of the thermoplastic resin molding material was 165 ° C., and the temperature in the mixer body 80 in this step was 186 ° C.
【０１７７】この工程で、原材料内の木粉によりＰＰは
大きな塊とはならず、混合分散に際しても凝集したりせ
ずに粘土状にゲル化して直径約１０〜１００mmの塊状の
「混練材料」となった。つまり、この塊とは、個々の木
粉がその木粉単体の表面全体に熱可塑性樹脂を付着した
状態に形成され、これらの個々の木粉が集合した塊であ
るため、木粉単体間の密着性がなく塊そのものは脆いも
のである。したがって、この工程により形成された混練
材料は、後述する後工程の押出機７０でより一層効率良
く混練され得る良好な材料であり、押出し成形時におい
て特に木粉の摩擦抵抗を減じる良好な材料である。In this step, PP does not become a large lump due to the wood powder in the raw material, and does not aggregate even when mixed and dispersed, and gels into a clay like lump, which is a lump-shaped "kneading material" having a diameter of about 10 to 100 mm. Became. In other words, this lump is a lump in which individual wood flour is formed with the thermoplastic resin adhered to the entire surface of the individual wood flour, and these individual wood flours are aggregated. There is no adhesion and the lump itself is brittle. Therefore, the kneading material formed by this step is a good material that can be kneaded more efficiently in the later-described extruder 70, and is a good material that particularly reduces the friction resistance of wood powder during extrusion molding. is there.
【０１７８】また、熱可塑性樹脂成形材がＰＰの本製造
例の場合、木粉が原材料の全体量の３５wt％以下になる
と熱可塑性樹脂成形材がミキサー８０内で大きな塊とな
るので、木粉の量は３５wt％より多くする必要がある。
また、木粉が７５wt％までは原材料のゲル化が可能であ
り、木粉が７５wt％より多くなると、木粉が焼けるので
不可能である。Further, in the case of the present production example in which the thermoplastic resin molding material is PP, when the wood powder is 35 wt% or less of the total amount of the raw material, the thermoplastic resin molding material becomes a large lump in the mixer 80, and therefore the wood powder Should be greater than 35 wt%.
Further, the gelling of the raw material is possible up to 75 wt% of the wood powder, and it is impossible because the wood powder is burned when the wood powder exceeds 75 wt%.
【０１７９】(4)前記モータを低速にし、シリンダ９１
を作動して蓋８９を後退して排出口８８を開放する。ミ
キサー本体８１内のゲル化した原材料は排出口８８から
排出ダクト９３を経て、次工程へ排出される。排出時の
温度は１８６℃、原材料を投入してから排出するまでの
全工程は２６分５４秒で処理された。(4) Reduce the speed of the motor to the cylinder 91
Is operated to retract the lid 89 to open the discharge port 88. The gelled raw material in the mixer body 81 is discharged from the discharge port 88 through the discharge duct 93 to the next step. The temperature at the time of discharging was 186 ° C., and the entire process from the charging of the raw materials to the discharging was processed in 26 minutes 54 seconds.
【０１８０】なお、前記モータを低速にして原材料内の
熱可塑性樹脂成形材の融点より１０℃程度高い温度にま
で下げれば、ミキサー８０内の混練材料は冷却され、直
径約２５mm以下の大きさの塊に造粒され造粒木粉が形成
される。この場合、次工程の冷却造粒手段での処理を省
略して、後工程の整粒手段により粒径１０mm以下に整粒
して木質合成粉を形成しても良い。If the speed of the motor is lowered to a temperature about 10 ° C. higher than the melting point of the thermoplastic resin molding material in the raw material, the kneading material in the mixer 80 is cooled, and the kneading material having a diameter of about 25 mm or less is cooled. Granules are granulated to form granulated wood flour. In this case, the treatment by the cooling granulation means in the next step may be omitted and the particle size may be adjusted to 10 mm or less by the particle size control means in the subsequent step to form the synthetic wood powder.
【０１８１】他の製造例として以下に示す。原材料とし
ては、原材料の６４wt％は平均粒径２０メッシュ以下で
嵩比重が０．２の木粉を２６kgおよび尿素の４０％濃度
の水溶液を０．３kg、５〜２０wt％の酸化チタンを３kg
で成り、残りの３６wt％は熱可塑性樹脂成形材のＰＣ
（ポリカーボネート）を１６kgで成る。この原材料を上
記のミキサー８０で混練する場合、前述実施例と同様の
工程を行ない、木粉をミキサー本体８１内へ投入してか
ら１７分３０秒後、１５９℃で、ＰＣを投入し約２６分
１４秒後、２２３℃でゲル化した混練材料を排出した。Another manufacturing example will be shown below. As raw materials, 64 wt% of the raw materials has an average particle size of 20 mesh or less and a bulk specific gravity of 26 kg of wood powder, 0.3 kg of a 40% concentration aqueous solution of urea, and 3 kg of 5 to 20 wt% titanium oxide.
The remaining 36 wt% is PC, which is a thermoplastic resin molding material.
It consists of 16 kg (polycarbonate). When this raw material is kneaded in the mixer 80, the same steps as those in the above-described embodiment are performed, and 17 minutes and 30 seconds after the wood powder is charged into the mixer main body 81, the PC is charged at 159 ° C. for about 26 minutes. After 14 minutes, the kneaded material that gelled at 223 ° C. was discharged.
【０１８２】(5)冷却造粒 前述したミキサー８０で形成された混練材料は排出ダク
ト９３を経てクーリングミキサー１００の投入口１１３
からミキサー本体１０１内へ投入される。撹拌破砕翼１
０４はモータ１０５により９０rpmの速度で回転し、ア
ーム１０３が３rpmの速度で水平方向に回転している。(5) Cooling Granulation The kneading material formed by the mixer 80 described above passes through the discharge duct 93 and the charging port 113 of the cooling mixer 100.
Is charged into the mixer main body 101 from. Stirring crushing blade 1
The motor 04 rotates at a speed of 90 rpm by the motor 105, and the arm 103 rotates horizontally at a speed of 3 rpm.
【０１８３】混練材料はジャケット１０２内の冷却水に
より冷却されたミキサー本体１０１の内周壁面で冷却さ
れ、直径約２５mm以下に造粒された「造粒木粉」が形成
され、この造粒木粉はバルブ１０６を開放して排出口１
０７より排出される。The kneading material is cooled on the inner peripheral wall surface of the mixer main body 101 cooled by the cooling water in the jacket 102 to form "granulated wood powder" granulated to a diameter of about 25 mm or less. For powder, open valve 106 and discharge port 1
It is discharged from 07.
【０１８４】ＰＰの融点は１６５℃であり、本製造例で
は前述したミキサー８０内で１８０℃にゲル化した混練
材料をクーリングミキサー１００へ投入してから１０〜
１５分程度で、９０〜１００℃まで冷却され、このクー
リングミキサーによる冷却造粒は効率が良い。このとき
のジャケット１０２内の冷却水については、給水管１０
８から供給する冷却水の温度は３０℃で、排水管１０９
より排水される冷却水の温度は４０℃。[0184] The melting point of PP is 165 ° C. In this manufacturing example, the kneading material gelled at 180 ° C in the mixer 80 described above is charged into the cooling mixer 100 for 10 to 10 minutes.
It is cooled to 90 to 100 ° C. in about 15 minutes, and the cooling granulation by this cooling mixer is efficient. Regarding the cooling water in the jacket 102 at this time, the water supply pipe 10
The temperature of the cooling water supplied from 8 is 30 ° C, and the drain pipe 109
The temperature of the drained cooling water is 40 ° C.
【０１８５】(6)整粒 前記冷却造粒手段で形成された造粒木粉は、さらにカッ
タミルを使用して粒径１０mm以下に整粒し、「木質合成
粉」を形成する。(6) Grain sizing The granulated wood powder formed by the cooling granulation means is further sized to a particle size of 10 mm or less using a cutter mill to form a "wood synthetic powder".
【０１８６】造粒木粉はカッタ支持体１２４の回転刃１
２５と固定刃１２６間で約０．１〜８mmの木質合成粉に
切断され「木質合成粉」が形成され、整粒室１２８のス
クリーン１２９のメッシュを通過して排出口１３１より
排出される。Granulated wood powder is the rotary blade 1 of the cutter support 124.
25 to the fixed blade 126 is cut into wood synthetic powder of about 0.1 to 8 mm to form “wood synthetic powder”, which passes through the mesh of the screen 129 of the sizing chamber 128 and is discharged from the discharge port 131.
【０１８７】３−２．木質合成粉を用いた木質合成板の
比較例 木粉を５０％、ＰＰの樹脂を５０％で成る本願の木質合
成板（板厚１２．０mm）（以下、「本願例Ａ」という）
と、３層の木板を貼合わせた合板Ａ（板厚１１．２mm）
と、５層の木板を貼合わせた合板Ｂ（板厚１１．６mm）
と、７層の木板を貼合わせた合板Ｃ（板厚１５．３mm）
に対して以下の物性試験を行なった。3-2. Comparative example of wood synthetic board using wood synthetic powder Wood synthetic board of the present application (sheet thickness 12.0 mm) consisting of 50% of wood powder and 50% of PP resin (hereinafter referred to as "this application example A")
And plywood A (thickness 11.2 mm) with three layers of wood
And plywood B with 5 layers of wood laminated (11.6 mm thick)
And plywood C with 7 layers of wood laminated together (thickness: 15.3 mm)
Then, the following physical property tests were conducted.
【０１８８】（１）曲げ弾性率及び曲げ強度試験 試験条件 支点間隔；１００mm， 試験速度；５mm
/min(1) Bending elastic modulus and bending strength test Test conditions: fulcrum spacing: 100 mm, test speed: 5 mm
/ min
【０１８９】[0189]
【表１】 [Table 1]
【０１９０】以上のことから、本願例Ａは、合板Ａ、合
板Ｂの縦方向及び横方向の曲げ弾性率及び曲げ強度と比
較すると、いずれも合板Ａ、合板Ｂより低い値である
が、合板Ｃと比較すると、合板Ｃ の曲げ強度（縦方
向）が２９．１MPaであるのに対し、本願例Ａの曲げ強
度（縦方向）が２７．５MPaと若干低いが、本願例Ａは
合板Ｃに比較的近い値を示しており、合板Ｃ の曲げ弾
性率（縦方向）が１．９８GPaであるのに対し、本願例
Ａの曲げ弾性率（縦方向）が２．７３GPaであり、合板
Ｃ の曲げ弾性率（横方向）が１．６４GPaであるのに
対し、本願例Ａの曲げ弾性率（横方向）が２．５１GPa
であり、合板Ｃ の曲げ強度（横方向）が２７．５MPa
であるのに対し、本願例Ａの曲げ強度（横方向）が２
８．２MPaであり、いずれも本願例Ａは合板Ｃに対して
は高い数値を示している。From the above, in comparison with the bending elastic moduli and bending strengths of the plywood A and the plywood B in the longitudinal direction and the transverse direction, both of the values in the example A of the present application are lower than those of the plywood A and the plywood B. Compared with C, the bending strength (longitudinal direction) of plywood C is 29.1 MPa, whereas the bending strength (longitudinal direction) of Example A of the present application is a little lower at 27.5 MPa, but this example A The values are relatively close to each other, and the bending elastic modulus (longitudinal direction) of plywood C 1 is 1.98 GPa, whereas the bending elastic modulus (longitudinal direction) of Example A of the present invention is 2.73 GPa, and plywood C 2 The flexural modulus (horizontal direction) is 1.64 GPa, whereas the flexural modulus (horizontal direction) of Example A of the present invention is 2.51 GPa.
And the bending strength (lateral direction) of plywood C is 27.5 MPa.
On the other hand, the bending strength (transverse direction) of Example A of the present invention is 2
It is 8.2 MPa, and in each case, the example A of the present application shows a high numerical value with respect to the plywood C.
【０１９１】したがって、本願の木質合成板はある種の
合板と同等の曲げ弾性率及び曲げ強度を示すという、良
好な結果を得た。Therefore, the good results that the wood-synthesized board of the present invention exhibits the bending elastic modulus and bending strength equivalent to those of a certain kind of plywood were obtained.
【０１９２】（２）面衝撃試験 試験条件； １０m/sec(2) Surface impact test Test condition: 10 m / sec
【０１９３】[0193]
【表２】 [Table 2]
【０１９４】以上のことから、本願例Ａの面衝撃値は、
合板Ａ、合板Ｂ、合板Ｃのいずれより高い値を示した。From the above, the surface impact value of Example A of the present application is
The values were higher than those of plywood A, plywood B, and plywood C.
【０１９５】（３）硬度試験 試験条件 ロックウェル硬度の圧子；径１２．７０
０mmの鋼球試験荷重；６０kgf(3) Hardness test Test conditions Rockwell hardness indenter; diameter 12.70
0mm steel ball test load; 60kgf
【０１９６】[0196]
【表３】 [Table 3]
【０１９７】以上のことから、本願例Ａのロックウェル
硬度は、合板Ａ、合板Ｂ、合板Ｃのいずれより高い値を
示した。本発明の木質合成板は合板Ａに対して約１．４
倍、合板Ｂに対して約１．９３倍、合板Ｃに対して約
３．３４倍という優れた硬さを有する。From the above, the Rockwell hardness of Example A of the present application was higher than that of any of plywood A, plywood B and plywood C. The wood-based synthetic board of the present invention is about 1.4 with respect to plywood A.
It has excellent hardness of about 1.93 times that of plywood B and about 3.34 times that of plywood C.
【０１９８】（４）含水性試験 試験条件 各試験片を純水に浸漬し、２５℃で２４
時間放置後の質量変化率（＝含水率）を測定した。(4) Hydration Test Test Conditions Each test piece was immersed in pure water and kept at 25 ° C. for 24 hours.
The mass change rate (= water content) after standing for a time was measured.
【０１９９】[0199]
【表４】 [Table 4]
【０２００】以上のことから、本願例Ａの含水率は、合
板Ａ、合板Ｂ、合板Ｃのいずれより極めて低い値を示し
た。含水率が変化しやすいことは、板の膨張、収縮の変
化率が大きくなり、つまり湿度などの環境変化により板
の寸法変化が大きくなり、板の割れや寸法の狂いが生じ
やすくなる要因になる。From the above, the water content of Example A of the present application was much lower than that of any of plywood A, plywood B and plywood C. If the water content changes easily, the rate of change of expansion and contraction of the plate will increase, which means that the dimensional change of the plate will increase due to environmental changes such as humidity, which will easily cause cracking and dimensional deviation of the plate. .
【０２０１】本発明の木質合成板は、上記３種の合板の
うちでも含水率が最も低い合板Ａに対してでさえ、１／
１５３という極めて低い含水率を示していることから、
湿度等の環境変化に左右されず寸法の安定性が極めて高
いものである。The wood-based synthetic board of the present invention has a 1 / third ratio even for the plywood A having the lowest water content among the above three kinds of plywood.
Since it has an extremely low water content of 153,
It has extremely high dimensional stability without being affected by environmental changes such as humidity.
【０２０２】（５）釘引き抜き強度試験 試験条件 試験速度；５mm/min(5) Nail pull-out strength test Test conditions Test speed: 5 mm / min
【０２０３】[0203]
【表５】 [Table 5]
【０２０４】以上のことから、本願例Ａの釘引き抜き強
度は、合板Ａ、合板Ｂ、合板Ｃのいずれより低い値を示
した。一般的に木質合成板の釘引き抜き強度が低いこと
は木質合成板の特有の弱点である。釘の引き抜き強度は
釘の周囲への板の組織の摩擦力が釘を引き抜くときの引
き抜き強度となって表れると考えられ、木質合成板の場
合は釘の引き抜き強度を弱める作用をする摩擦抵抗の小
さい樹脂が含まれているので、摩擦抵抗の大きい木材板
でなる合板の釘の引き抜き強度より低い値を示すことは
当然考えられることである。しかし、本願例Ａは合板Ｃ
の釘引き抜き強度の約７２％の強度を有するという、良
好な結果を得た。From the above, the nail pull-out strength of Example A of the present application was lower than any of plywood A, plywood B and plywood C. Generally, the low nail pull-out strength of the wooden synthetic board is a peculiar weak point of the wooden synthetic board. It is considered that the pull-out strength of the nail is expressed by the frictional force of the tissue of the plate around the nail as the pull-out strength when pulling out the nail, and in the case of a wooden synthetic board, the frictional resistance that weakens the pull-out strength of the nail. Since a small amount of resin is contained, it is naturally conceivable that the value will be lower than the pull-out strength of the nail of the plywood made of a wood plate having a large friction resistance. However, the example A of the present application is plywood C
Good results were obtained, having a strength of about 72% of the nail pull-out strength.
【０２０５】木質合成板の場合は個々の木粉間の密度を
高くすることにより釘の引き抜き強度を高くすることに
なり、本願例Ａは高密度であるので上記のように良好な
結果を得たと考えられる。In the case of the wood synthetic board, the nail pull-out strength is increased by increasing the density between the individual wood powders, and since the sample A of the present application has a high density, good results are obtained as described above. It is thought that
【０２０６】（６）木ネジ試験 試験条件 試験速度；５mm/min(6) Wood screw test Test conditions Test speed: 5 mm / min
【０２０７】[0207]
【表６】 [Table 6]
【０２０８】以上のことから、本願例Ａの木ネジの引き
抜き強度は、合板Ａ、合板Ｂ、合板Ｃのいずれより高い
値を示した。また、本願例Ａの木ネジの引っかけ強度
は、縦方向および横方向のいずれにおいても合板Ａ、合
板Ｂ、合板Ｃより高い値を示した。From the above, the pull-out strength of the wood screw of Example A of the present application was higher than that of any of plywood A, plywood B and plywood C. Further, the hooking strength of the wood screw of Example A of the present application was higher than that of plywood A, plywood B and plywood C both in the longitudinal direction and in the transverse direction.
【０２０９】木ネジの引き抜き強度の場合は釘の引き抜
き強度の場合のように釘の周囲への板の組織の摩擦力と
異なり、板の組織の剪断力と関係があると考えられる。
つまり、木質合成板の場合は、ネジ内に食い込んだ部分
の板の組織と他の組織との密着性が木ネジの引く抜き強
度の強さに反映すると考えられる。It is considered that the pulling strength of the wood screw is different from the frictional force of the tissue of the plate around the nail as in the pulling strength of the nail, and is related to the shearing force of the tissue of the plate.
In other words, in the case of a wood synthetic board, it is considered that the close contact between the board tissue of the part that bites into the screw and the other tissue reflects the strength of the pulling strength of the wood screw.
【０２１０】本発明の木質合成板は木粉が均一で高密度
であるため個々の木粉間の密着性が強く、本願例Ａが示
すように木ネジの引き抜き強度及び木ネジの引っかけ強
度が各合板より高いという優れた結果を得た。In the wood-based synthetic board of the present invention, since the wood powder is uniform and has a high density, the adhesion between individual wood powders is strong, and as shown in Example A of the present application, the wood screw pull-out strength and the wood screw hooking strength are high. Excellent results were obtained, which was higher than each plywood.
【０２１１】以上の各試験の結果で示すように、本発明
の木質合成板は曲げ弾性率、曲げ強度、釘の引き抜き強
度において、幾種類かの合板のうちの一部の種類の合板
に近い特性を有するという優れた特性を示し、且つ面衝
撃値、含水性、木ネジの引き抜き強度及び木ネジの引っ
かけ強度においては合板より優れた特性を示すという良
好なものである。As shown by the results of each of the above tests, the wood-based synthetic board of the present invention is close to some of several kinds of plywood in bending elastic modulus, bending strength, and nail pull-out strength. It is excellent in that it has characteristics, and is superior to plywood in surface impact value, water content, wood screw pull-out strength and wood screw pulling strength.
【０２１２】３−３．その他の木質合成板の製造例3-3. Other examples of wood-based synthetic board production
【０２１３】[0213]
【表７】 [Table 7]
【０２１４】以上の製品としての成形板２９である木質
合成板 Ｗ：９１０mm、Ｈ：１２mmを鋸盤により１８２
０mm毎に切断し、重量１８ｋｇのベージュ色のコクリー
トパネルとして用いる木質合成板を得た。なお、肉厚１
０〜１２mm程度の木質合成板は、机やテーブル、食器棚
等の家具材料など他の用途にも使用される。[0214] The wood-made synthetic board W: 910 mm, H: 12 mm, which is the molded board 29 as the above product, is made 182 by a sawing machine.
It was cut at intervals of 0 mm to obtain a wooden synthetic board having a weight of 18 kg and used as a beige cochleate panel. In addition, wall thickness 1
The wood synthetic board of about 0 to 12 mm is also used for other purposes such as furniture materials such as desks, tables and cupboards.
【０２１５】なお、成形ダイ１０の高さを２０〜３０mm
とすることによって、肉厚２０〜３０mmの木質合成板が
成形され、この木質合成板はまな板や他の用途の板材と
して使用される。したがって、成形される木質合成板の
肉厚は上記の実施例に限定されない。The height of the molding die 10 is 20 to 30 mm.
By this, a wood synthetic board having a wall thickness of 20 to 30 mm is formed, and this wood synthetic board is used as a cutting board or a board material for other purposes. Therefore, the wall thickness of the wood synthetic board to be formed is not limited to the above-mentioned embodiment.
【０２１６】[0216]
【表８】 [Table 8]
【０２１７】以上の製品としての成形板２９である木質
合成板 Ｗ：９１０mm、Ｈ：３mmをシャーリングにより
１８２０mm毎に切断し、重量４．５ｋｇの木質合成板を
得る。[0217] The wooden synthetic board W: 910 mm, H: 3 mm, which is the molded plate 29 as the above product, is cut into every 1820 mm by shirring to obtain a wooden synthetic board having a weight of 4.5 kg.
【０２１８】このような薄板は、各種建築材料、家具材
料、機器パーツ等として広範囲な使用目的に向けた素材
となる。例えば、上記の薄板の木質合成板は、家屋の室
内装飾用の化粧板などの建築材として使用され、あるい
は約３００mm四方の大きさに加工してフロアリングブロ
ックなどの床材として使用される。さらに、他の用途と
して、自動車の車内の内装材として、例えば、運転席の
メータパネル周りの化粧板、トランスミッション周囲の
化粧板、その他の車内の壁面の化粧板として使用され、
高級感を得ることができる。機器パーツとしては電気機
器等のボックスパネルや他の機器の化粧板として使用さ
れる。Such a thin plate is a material for a wide range of purposes such as various building materials, furniture materials, equipment parts and the like. For example, the above-mentioned thin wooden synthetic board is used as a building material such as a decorative board for interior decoration of a house, or is processed into a size of about 300 mm square and used as a flooring material such as a flooring block. Further, as another application, as an interior material of the interior of the automobile, for example, used as a decorative plate around the meter panel of the driver's seat, a decorative plate around the transmission, and other decorative walls of the vehicle interior wall,
You can get a sense of quality. As equipment parts, it is used as a box panel for electric equipment and a decorative plate for other equipment.
【０２１９】したがって、本発明の押出成形方法は、薄
板から厚板に及ぶ広範囲な肉厚の木質合成板を成形可能
であり、広範囲な使用目的に向けた素材が成形される。Therefore, according to the extrusion molding method of the present invention, it is possible to mold a wide range of wall-thickness synthetic wood boards ranging from thin boards to thick boards, and materials for a wide range of purposes are molded.
【０２２０】なお、本発明の押出成形方法により成形さ
れる木質合成板は高密度であるので多量の木粉を混入で
き、木粉は熱可塑性樹脂より半値以下で遥かに安価であ
るため安価な木質合成板が成形される。また。多量の木
粉を混入される木質合成板は天然の木材パネルに近い性
質を有する優れた板材である。Since the wood synthetic board formed by the extrusion molding method of the present invention has a high density, a large amount of wood powder can be mixed in, and the wood powder is less than half the price of thermoplastic resin and is much cheaper, so it is inexpensive. A wood synthetic board is formed. Also. A wood-based synthetic board mixed with a large amount of wood flour is an excellent board having properties close to those of a natural wood panel.
【０２２１】なお、本発明の木質合成板はホットプレス
成形において再度押圧加熱−冷却脱型による型付け成形
をすることができる。しかし、本発明の押出成形法によ
る木質合成板は、従来のカレンダー成形法や押出成形法
に比べて内部残留応力が少ないので、予想以上の歪みを
生じさせることがない。The wood-synthesized board of the present invention can be subjected to hot press-molding again by press-heating-cooling demolding. However, the wood synthetic board produced by the extrusion molding method of the present invention has less internal residual stress as compared with the conventional calender molding method or extrusion molding method, and therefore does not cause distortion more than expected.
【０２２２】〔本発明の態様〕以下は、これに限定され
るものではないが、本発明を構成するその他の態様を示
す。前記導入孔は、横断面で押出機吐出口から成形室入
口の矩形状の断面の長手方向の両端を成形ダイ幅方向に
直線状に形成するいわゆるストレイト・マニホールド型
である押出機。前記成形室は、加熱及び冷却手段をそれ
ぞれ備える上下２枚の金属板を両側縁に配置した金属製
スペーサを介して断面方形に形成した成形ダイから構成
される。[Aspects of the Present Invention] The following will describe other aspects of the present invention, although not limited thereto. The introduction hole is a so-called straight manifold type extruder in which both ends of a rectangular cross section of a rectangular cross section from the extruder discharge port to the molding chamber inlet are formed in a straight line in the width direction of the molding die. The forming chamber is composed of a forming die formed in a rectangular cross section through metal spacers having upper and lower two metal plates respectively provided with heating and cooling means arranged on both side edges.
【０２２３】ガラス繊維の不織布又は、ガラス織布の表
面にフッ素樹脂のフィルムをコーティングしたシートを
前記成形室の内壁面に貼設した押出機。An extruder in which a non-woven fabric of glass fibers or a woven fabric of glass is coated with a fluororesin film sheet on the inner wall surface of the molding chamber.
【０２２４】[0224]
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。Since the present invention is constructed as described above, it has the following effects.
【０２２５】（１）本発明の木質合成粉は、セルロース
系破砕物を平均粒径２０メッシュ以下とする粉末状とし
たので、熱可塑性樹脂成形材とのなじみを良好とし、ゲ
ル化混練する際、混合分散に際しても凝集したりせずに
熱可塑性樹脂成形材がセルロース系破砕物の表面全体に
付着するので、いわゆる熱可塑性樹脂成形材が熱的、化
学的に安定した木粉粒に固定化された状態を定常的に維
持し得るようにして木粉と熱可塑性樹脂成形材との混
合、分散状態を定常的に維持すべく、良好なる流動性を
与える木質合成粉が形成され、且つ冷却による凝縮、縮
小作用とも相まって、化学的な反応とか接着によらない
木質合成粉が形成され、この木質合成粉を用いて押出機
では良好な混練状態の押出し生地が形成され、成形押し
出し時におけるセルロース系破砕物の摩擦抵抗を減じ、
成形機の損耗、毀損の防止を図ることができ、且つ均一
で高密度の木質合成板を成形することに寄与するもので
あった。しかも、従来においては粒径８０〜３００メッ
シュに破砕、微粉末化されたセルロース系破砕物を使用
していたが、本発明においてはセルロース系破砕物の平
均粒径を２０メッシュ以下という広範囲な粒径のセルロ
ース系破砕物を使用できる木質合成粉を提供できた。(1) Since the wood-based synthetic powder of the present invention is made into a powder form in which the crushed cellulose material has an average particle size of 20 mesh or less, it is well compatible with the thermoplastic resin molding material, and when it is gelled and kneaded. Since the thermoplastic resin molding material adheres to the entire surface of the cellulosic crushed material without agglomeration even when mixed and dispersed, the so-called thermoplastic resin molding material is fixed to thermally and chemically stable wood powder particles. In order to maintain a stable state, the wood powder and thermoplastic resin molding material are mixed, and in order to maintain a stable dispersion state, a synthetic wood powder that gives good fluidity is formed and cooled. Combined with the condensation and contraction effects of the wood, synthetic wood powder is formed without chemical reaction or adhesion, and using this synthetic wood powder, an extruded dough in a good kneading state is formed, and the cells at the time of molding extrusion are formed. Reduce the frictional resistance of over scan system crushed,
It was possible to prevent wear and damage of the molding machine, and contributed to molding a uniform and high-density synthetic wood board. Moreover, in the past, a cellulosic crushed product crushed to a particle size of 80 to 300 mesh and pulverized was used, but in the present invention, a wide range of particles having an average particle size of 20 mesh or less is used. It was possible to provide a synthetic wood powder that can use a cellulosic crushed product of a diameter.
【０２２６】さらに、本発明の木質合成粉は、セルロー
ス系破砕物の含有水分量を１５wt％以内としたので、ゲ
ル化混練及び成形時における木酸ガスを揮散し、水蒸気
あるいは気泡発生を減少し、表面の肌荒れを防止するこ
とができた。Further, since the wood-based synthetic powder of the present invention has a water content of 15% by weight or less in the cellulosic crushed product, it volatilizes wood acid gas at the time of gelation kneading and molding to reduce generation of steam or bubbles. , It was possible to prevent the surface roughness.
【０２２７】また、本発明の木質合成粉は、１０mm以下
に整粒しているので、成形押し出し時における焦げつき
を防止でき、また木質合成粉の摩擦抵抗を減じ成形機の
損耗、毀損の防止を図ることができた。Further, since the wood-based synthetic powder of the present invention is sized to 10 mm or less, it is possible to prevent sticking at the time of molding extrusion, and reduce friction resistance of the wood-based synthetic powder to prevent wear and damage of the molding machine. I was able to plan.
【０２２８】（２）本発明の木質合成粉の製造方法は、
含有水分量を１５wt％以内とし平均粒径２０メッシュ以
下のセルロース系破砕物２０〜７５wt％に対して熱可塑
性樹脂成形材２５〜８０wt％をともに攪拌衝撃翼により
混合して、摩擦熱によりゲル化混練し、このゲル化混練
のときセルロース系破砕物が２０〜７５wt％であるの
で、被混練材料たる上記混合物が大きな塊となることな
く熱可塑性樹脂成形材が個々のセルロース系破砕物の表
面全体に付着して比較的小さな状態でゲル化し、次いで
冷却し、粉砕して粒径１０mm以下に整粒する工程を少な
くとも含むことを特徴とするので、上記（１）項に示す
ような良好な木質合成粉を形成できた。(2) The method for producing a woody synthetic powder of the present invention is as follows:
25-80 wt% of a thermoplastic resin molding material is mixed with 20-75 wt% of a cellulosic crushed material having an average particle size of 20 mesh or less with a water content of 15 wt% or less, and gelled by frictional heat by mixing with a stirring impact blade. Since the cellulosic crushed material is 20 to 75 wt% at the time of kneading and this gelling and kneading, the thermoplastic resin molding material does not form a large lump of the material to be kneaded, and the thermoplastic resin molding material can be used on the entire surface of the individual cellulosic crushed material. It is characterized by including at least the steps of adhering to, gelling in a relatively small state, then cooling, crushing, and sizing to a particle size of 10 mm or less, so that good woody materials as described in (1) above can be obtained. A synthetic powder could be formed.
【０２２９】（３）本発明の木質合成粉の製造装置は、
含有水分量を１５wt％以内とし平均粒径２０メッシュ以
下のセルロース系破砕物２０〜７５wt％に対して熱可塑
性樹脂成形材２５〜８０wt％をともに混合して、攪拌衝
撃翼を備える流動混合混練手段において原材料による摩
擦熱により熱可塑性樹脂成形材が個々のセルロース系破
砕物の表面全体に付着して比較的小さな状態でゲル化混
練でき、内部に攪拌破砕翼を有し、ジャケットに冷却水
の入口および出口を備える冷却造粒手段において前記ゲ
ル化した混練材料を効率良く冷却し造粒し、整粒手段に
おいて前記冷却造粒した造粒木粉を粒径１０mm以下に整
粒して上記（１）項に示すような良好な木質合成粉を製
造できた。(3) The apparatus for producing a woody synthetic powder of the present invention is
A fluid mixing and kneading means provided with a stirring impact blade by mixing together 20 to 75% by weight of a thermoplastic resin molding material with 20 to 75% by weight of a cellulosic crushed material having a water content of 15% by weight or less and an average particle size of 20 mesh or less. The thermoplastic resin molding material adheres to the entire surface of the individual cellulosic crushed materials by frictional heat from the raw materials and can be gelled and kneaded in a relatively small state, has a stirring and crushing blade inside, and has an inlet for cooling water in the jacket. In the cooling and granulating means having an outlet, the gelled kneaded material is efficiently cooled and granulated, and in the particle sizing means, the cooled and granulated granulated wood powder is sized to a particle size of 10 mm or less. It was possible to produce a good woody synthetic powder as shown in the section (1).
【０２３０】（４）上記（１）項に示すような良好な木
質合成粉を加熱、練成し、スクリューをもって成形ダイ
へ押出した押出し生地を徐冷し、且つ、この押出し生地
に押出し力に抗する抑制力を加えて押出し生地の密度を
高くして成る押出成形方法で成形された木質合成板は、
加熱、練成された押出し生地が個々のセルロース系破砕
物間に熱可塑性樹脂成形材を満遍なく浸透している良好
な混練状態で、しかもセルロース系破砕物の摩擦抵抗を
減じた状態で成形ダイへ押し出され且つこの押出し生地
に押出し力に抗する抑制力を加えたので、均一で高密度
の木質合成板である。(4) The good synthetic wood powder as described in the above item (1) is heated and kneaded, and the extruded dough extruded to the forming die by the screw is gradually cooled, and the extruded dough is extruded with a force of extruding. A wood-based synthetic board molded by an extrusion molding method, in which the density of the extruded fabric is increased by applying an anti-suppressive force,
The extruded dough that has been heated and kneaded has the thermoplastic resin molding material evenly permeated between the individual cellulosic crushed materials. In a good kneading state, and with reduced frictional resistance of the cellulosic crushed materials, form the molding die. Since it is extruded and exerts a restraining force against the extruding force on this extruded material, it is a uniform and high-density synthetic wood board.
【０２３１】（５）セルロース系破砕物を熱可塑性樹脂
成形材に２０〜７５wt％相当混入し、加熱、練成し、ス
クリューをもって成形ダイへ押出し、この押出し生地
を、内壁面にフッ素樹脂のシートを貼設又はフッ素樹脂
をコーティングした成形ダイの成形部へ押出して所定の
肉厚に成形し且つ前記成形部で徐冷したので、フッ素樹
脂は熱伝導係数が低いため徐冷効果があり、その結果、
押出し生地が冷却するときに生じる歪みを少なくするこ
とができた。したがって、成形板を補正ロール等で歪み
を矯正するなどの矯正を必要としない内部残留応力が少
ない高品質の木質合成板を成形することができた。(5) A crushed cellulosic material is mixed in a thermoplastic resin molding material in an amount of 20 to 75 wt%, heated and kneaded, and extruded into a molding die with a screw, and the extruded material is a fluororesin sheet on the inner wall surface. Since it is extruded to a molding portion of a molding die which is pasted or coated with a fluororesin and molded into a predetermined wall thickness and gradually cooled in the molding portion, the fluororesin has a slow cooling effect due to its low thermal conductivity coefficient. result,
It was possible to reduce the distortion that occurs when the extruded dough cools. Therefore, it was possible to mold a high-quality wood-based synthetic board with a small internal residual stress that does not require correction such as correcting the formed board with a correction roll or the like.
【０２３２】（６）フッ素樹脂は摩擦係数が小さいの
で、押出し生地のセルロース系破砕物に対する抵抗力を
小さくでき、セルロース系破砕物と熱可塑性樹脂成形材
との混練状態が良好な状態で流れる。したがって良好な
混練状態で成形ダイより押出して直接、幅広で均一な高
密度の品質の良い木質合成板を成形することができた。
この理由から、厚肉の木質合成板を成形ダイより直接、
押出し成形することができた。(6) Since the fluororesin has a small friction coefficient, the resistance of the extruded material to the cellulosic crushed material can be reduced, and the cellulosic crushed material and the thermoplastic resin molding material flow in a good kneading state. Therefore, it was possible to directly form a wide, uniform and high-density synthetic wood board of high quality by extruding from a molding die in a good kneading state.
For this reason, a thick wood synthetic board is directly
It could be extruded.
【０２３３】また、セルロース系破砕物の流れが良好で
あるので、従来のようにセルロース系破砕物の流れが遅
くなるためにセルロース系破砕物が成形ダイのヒータの
熱で焼けるということがない。したがって、成形された
木質合成板はこげ茶色に変色することがなく、また、従
来のような耐衝撃性など品質特性の低下を防ぐことがで
きた。Further, since the flow rate of the cellulosic crushed material is good, the flow rate of the cellulosic crushed material is slowed as in the conventional case and the cellulosic crushed material is not burned by the heat of the heater of the molding die. Therefore, the formed wood-based synthetic board did not turn dark brown, and it was possible to prevent deterioration of quality characteristics such as impact resistance as in the conventional case.
【０２３４】（７）フッ素樹脂は摩擦係数が小さいた
め、セルロース系破砕物と熱可塑性樹脂成形材との混練
状態が良好な状態で流動するので、製品としての成形板
である木質合成板の表面に肌荒れが生ずることなく、平
滑な表面を有する木質合成板を成形できた。(7) Since the fluororesin has a small friction coefficient, the crushed cellulosic material and the thermoplastic resin molding material flow in a good kneading state, so that the surface of the wooden synthetic board which is a molding board as a product. It was possible to mold a wood-based synthetic board having a smooth surface without causing rough skin.
【０２３５】（８）成形ダイより押出された成形板に、
成形板の押出し力に抗する抑制力を加えて成形ダイの成
形部内の押出し生地の密度を高くしたので、より一層密
度が均一で高密度の木質合成板を押出成形することがで
きた。(8) On the molding plate extruded from the molding die,
Since the density of the extruded material in the forming part of the forming die was increased by applying the suppressing force against the extruding force of the forming plate, it was possible to extrude the wood synthetic plate having a more uniform density and a high density.
【０２３６】（９）押出し生地を成形ダイの導入部で加
熱して成形ダイの成形部へ押出したので、押出し生地の
流動性を維持し、すなわち混練状態を良好に保ちながら
押出し生地を成形ダイの成形部へ円滑に押出すことがで
きた。(9) Since the extruded dough is heated at the introduction part of the forming die and extruded into the forming part of the forming die, the extruded dough is maintained in fluidity, that is, the extruded dough is formed while maintaining a good kneading state. It was possible to smoothly extrude into the molding part.
【０２３７】（１０）セルロース系破砕物を熱可塑性樹
脂成形材に２０〜７５wt％相当混入し、加熱、練成し、
スクリューをもって押出す押出機の吐出口に、前記吐出
口より吐出された押出し生地を加熱する導入部と、この
導入部から押出された押出し生地を所定の肉厚に成形す
る成形部から成る成形ダイを連結すると共に、前記成形
部の内壁面にフッ素樹脂のシートを貼設又はフッ素樹脂
をコーティングし且つ成形部を冷却する冷却手段を成形
ダイに設けたので、良好な混練状態で成形ダイより押出
して直接、幅広で均一な高密度でしかも表面が平滑な品
質の良い木質合成板を成形する木質合成板の押出成形装
置を提供することができた。(10) A crushed cellulose material is mixed in a thermoplastic resin molding material in an amount of 20 to 75 wt% and heated and kneaded.
A molding die having an introduction part for heating the extruded dough discharged from the extruding port and a molding part for extruding the extruded dough extruded from the introducing part into a predetermined thickness at the discharge port of the extruder for extruding with a screw. In addition to connecting the above, a sheet of fluororesin is attached to the inner wall surface of the molding part or a cooling means for coating the fluororesin and cooling the molding part is provided in the molding die, so that it is extruded from the molding die in a good kneading state. Thus, it was possible to provide an extrusion molding device for a wood synthetic board which directly and directly forms a wide, uniform, high density, and good quality wood synthetic board.
【０２３８】（１１）前記押出機の押出ダイより吐出さ
れた押出し生地を加熱する前記成形ダイの導入部に該導
入部の幅方向の全長の７０〜９５％の全長を有し、且つ
該導入部の高さの７０％以下の高さの案内板を設けたの
で、押出し生地は前記案内板により導入部内で、成形部
の成形室内へ均等に拡散され、原料によっては、押出し
生地７９が押し出し方向で、中央部と端部で異なる線膨
張をして分子配向を異にすることを防ぎ、線膨張の均質
化を図り、分子配向を制御して、成形部２１の成形室２
２内へ均等に拡散され、均一な密度で押出され、且つ前
記案内板の表面にフッ素樹脂のシートを貼設又はフッ素
樹脂をコーティングしたので、この案内板の表面を通過
する押出し生地内のセルロース系破砕物は大きな抵抗を
受けることなく円滑に流動し、均一で高密度の木質合成
板を成形できた。(11) The introduction portion of the molding die for heating the extruded dough discharged from the extrusion die of the extruder has a total length of 70 to 95% of the total length in the width direction of the introduction portion, and the introduction Since the guide plate having a height of 70% or less of the height of the section is provided, the extruded dough is evenly diffused by the guide plate into the forming chamber of the forming section in the introducing section, and the extruded dough 79 is extruded depending on the raw material. Direction, it is possible to prevent different linear expansions at the central part and the end parts to make the molecular orientation different, to homogenize the linear expansion, control the molecular orientation, and form the molding chamber 2 of the molding part 21.
2 is evenly dispersed in 2 and extruded at a uniform density, and since a sheet of fluororesin is attached or coated with fluororesin on the surface of the guide plate, cellulose in the extruded cloth that passes through the surface of the guide plate. The crushed material flowed smoothly without great resistance, and a uniform and high-density synthetic wood board could be formed.
【０２３９】（１２）さらに、上記（１０）項における
前記成形ダイより押出された成形板の押出し力に抗する
抑制力を加えるブレーキ手段を設けたので、前記抑制力
により成形ダイの成形部内の押出し生地の密度を高くす
るため、より一層密度が均一で高密度の木質合成板を押
出成形する木質合成板の押出成形装置を提供することが
できた。(12) Further, since the braking means for applying the suppressing force against the extruding force of the forming plate extruded from the forming die in the above item (10), is provided, the suppressing force causes the inside of the forming portion of the forming die to move. In order to increase the density of the extruded dough, it has been possible to provide an extrusion molding device for a wood-based synthetic board, which extrudes a wood-based synthetic board with a more uniform density.
【０２４０】（１３）ブレーキ手段は、成形板の表裏面
を挟持して圧接する一対を成すピンチローラを設け、こ
のピンチローラの軸端にブレーキドラムを設け、このブ
レーキドラムの回転を抑制する摩擦体を前記ブレーキド
ラムに常時圧接したので、成形板の幅方向全体に、成形
板の押出し力に抗する均一な抑制力を与えることができ
た。(13) The braking means is provided with a pair of pinch rollers that sandwich and press-contact the front and back surfaces of the molding plate, and a brake drum is provided at the shaft end of the pinch rollers to provide friction that suppresses rotation of the brake drum. Since the body was constantly pressed against the brake drum, a uniform restraining force against the pushing force of the molding plate could be applied to the entire width direction of the molding plate.
【０２４１】（１４）前記ブレーキ手段は、成形板の表
裏面を挟持して圧接する上下一対を成すピンチローラを
複数対設け、上部のピンチローラの両軸端に前記ピンチ
ローラを回転自在にエアシリンダのロッド先端を連結
し、成形板を介して下部のピンチローラに対して押圧力
を調整自在に設けたので、成形板の板厚に応じて成形板
に対する押圧力を簡単に調整できた。(14) The braking means is provided with a plurality of pairs of upper and lower pinch rollers that sandwich and press-contact the front and back surfaces of the molding plate, and the pinch rollers are rotatably air-supported at both shaft ends of the upper pinch roller. Since the tip of the rod of the cylinder is connected and the pressing force is freely adjustable with respect to the lower pinch roller via the forming plate, the pressing force on the forming plate can be easily adjusted according to the plate thickness of the forming plate.
【０２４２】（１５）前記ブレーキ手段は、成形板の表
裏面を挟持して圧接する上下一対を成すピンチローラを
複数対設け、一のピンチローラの軸端をパウダブレーキ
の入力軸に連結すると共に、各ピンチローラの軸端に設
けた歯車を噛合せしめたので、複数対のピンチローラに
対して同一の回転抑制力を与えることができ、ピンチロ
ーラの成形板の一部分に押圧力をかけるのではなく成形
板に大きな面に押圧力を与えることができ、成形ダイ内
の押出し生地の押出力に抗する均等な抑制力を与えるこ
とができ、前記押出し生地を均一で高密度にできた。し
かも、前記抑制力を成形板の板厚に応じた生産効率の良
い抑制力に容易に微調整できた。(15) The braking means is provided with a plurality of pairs of upper and lower pinch rollers that sandwich and press-contact the front and back surfaces of the molded plate, and connect the shaft end of one pinch roller to the input shaft of the powder brake. Since the gears provided on the shaft ends of the pinch rollers are meshed with each other, the same rotation suppressing force can be applied to a plurality of pairs of pinch rollers, and pressing force is not applied to a part of the pinch roller forming plate. It is possible to apply a pressing force to a large surface of the forming plate without applying a uniform pressing force against the pushing force of the extruded material in the forming die, and the extruded material can be made uniform and have a high density. Moreover, the suppressing force could be easily fine-tuned to the suppressing force with good production efficiency according to the plate thickness of the forming plate.
【０２４３】（１６）本発明の木質合成板の押出成形方
法により、コンクリートバネルや家屋の床材（フロアリ
ングブロック）、室内の壁面の化粧板などの各種建築材
料、あるいは家具材料、電気機器のボックスパネルなど
の各種機器パーツ、自動車の車内の化粧板など各種車内
の内装材料等として広範囲な使用目的に向けた素材を提
供できた。(16) By the extrusion molding method of the present invention for wood-based synthetic boards, various building materials such as concrete panels, flooring (flooring blocks) for houses, decorative walls for indoor wall surfaces, furniture materials, and electrical equipment We were able to provide materials for a wide range of purposes, such as various equipment parts such as box panels and interior materials for various interiors such as decorative boards in automobiles.
【０２４４】（１７）本発明の押出成形方法により高密
度の木質合成板を成形できるので、単位重量当りの木粉
の量を多量に混入することができるため、安価で高品質
の木質合成板を成形できた。(17) Since a high-density wood synthetic board can be formed by the extrusion molding method of the present invention, a large amount of wood powder per unit weight can be mixed in, so that the wood synthetic board is inexpensive and of high quality. Could be molded.
【０２４５】（１８）前記押出機の押出ダイは、成形ダ
イの成形部の成形室の高さと同等以下の高さを有する方
形の射出口を形成し、この射出口に向けて徐々に狭く断
面変化するよう形成したので、多量の溶融木質合成粉を
吐出し、圧密を促進可能であり、且つ、ダイの目詰まり
を防ぐことができた。(18) The extrusion die of the extruder forms a rectangular injection port having a height equal to or less than the height of the molding chamber of the molding section of the molding die, and gradually narrows its cross section toward this injection port. Since it was formed so as to change, it was possible to discharge a large amount of molten wood-based synthetic powder, promote consolidation, and prevent clogging of the die.
【図１】本発明の実施例に使用するミキサー（流動混合
混練手段）の要部断面を示す全体正面図である。FIG. 1 is an overall front view showing a cross section of a main part of a mixer (fluid mixing and kneading means) used in an example of the present invention.
【図２】本発明の実施例に使用するクーリングミキサー
（冷却造粒手段）の要部断面を示す全体正面図である。FIG. 2 is an overall front view showing a cross section of a main part of a cooling mixer (cooling granulation means) used in an example of the present invention.
【図３】本発明の実施例に使用するカッタミル（整粒手
段）の要部断面を示す全体正面図である。FIG. 3 is an overall front view showing a cross section of a main part of a cutter mill (size regulating means) used in an example of the present invention.
【図４】本発明の実施例に使用する押出機の要部断面を
示す全体正面図である。FIG. 4 is an overall front view showing a cross section of a main part of an extruder used in an example of the present invention.
【図５】本発明の実施例の成形ダイ及びブレーキ手段の
縦断面を示す正面図である。FIG. 5 is a front view showing a vertical cross section of a molding die and a brake means according to an embodiment of the present invention.
【図６】本発明の実施例の成形ダイ及びブレーキ手段の
要部断面を示す平面図である。FIG. 6 is a plan view showing a cross section of a main part of a molding die and a brake means according to an embodiment of the present invention.
【図７】本発明の実施例のブレーキ手段の詳細を示す正
面図である。FIG. 7 is a front view showing details of the braking means of the embodiment of the present invention.
【図８】（Ａ）本発明の他の実施例の要部断面を示す図
である。 （Ｂ）本発明の他の実施例の要部断面を示す図である。FIG. 8A is a diagram showing a cross-section of a main part of another embodiment of the present invention. (B) It is a figure which shows the principal part cross section of the other Example of this invention.
【図９】本発明の他の実施例の成形ダイの縦断面を示す
正面図である。FIG. 9 is a front view showing a vertical cross section of a molding die according to another embodiment of the present invention.
【図１０】図９の矢視Ｊ−Ｊ線の縦断面図である。10 is a vertical cross-sectional view taken along the line JJ of FIG.
【図１１】図９の矢視Ｋ−Ｋ線の縦断面図である。11 is a vertical sectional view taken along the line KK of FIG.
【図１２】本発明の他の実施例の成形ダイの要部断面を
示す平面図である。FIG. 12 is a plan view showing a cross section of a main part of a molding die according to another embodiment of the present invention.
【図１３】本発明の他の実施例のブレーキ手段の要部断
面を示す平面図である。FIG. 13 is a plan view showing a cross section of a main part of a braking means of another embodiment of the present invention.
【図１４】図１３の矢視Ｎ−Ｎ線の縦断面図である。14 is a vertical cross-sectional view taken along the line NN of FIG.
【図１５】従来におけるカレンダー成形法を示す装置の
正面図である。FIG. 15 is a front view of an apparatus showing a conventional calender molding method.
【図１６】（Ａ）従来の押出成形法を示す装置の正面図
である。 （Ｂ）従来の押出成形法によるチューブ状の押出し成形
生地及び拡開生地の状態図である。FIG. 16 (A) is a front view of an apparatus showing a conventional extrusion molding method. (B) is a state diagram of a tubular extruded cloth and an expanded cloth by a conventional extrusion molding method.
１０ 成形ダイ １１ 導入部 １２ 導入孔 １３ 導入室 １４，１４ａ ヒータ １５ 案内板 １６ スクリーン部 １７ アダプタ １８ 流入口 １９ 押出ダイ ２１ 成形部 ２２ 成形室 ２３ ダイ出口 ２４ シート（フッ素樹脂の） ２５ 冷却管 ２７ ピン ２８ 取付具 ２９ 成形板 ３０，３０ａ ブレーキ手段 ３１ ピンチローラ ３１ａ 固定ピンチローラ ３１ｂ 自在ピンチローラ ３２ 軸 ３３ ブレーキドラム ３４，３４ａ，３４ｂ 軸受 ３５ ブレーキベルト ３６ 軸受固定フレーム ３７ 軸受自在フレーム ３８ ガイドシャフト ３９ ブレーキベルトホルダ ４０ ブレーキテンショナー ４１ シャフト ４２ 固定盤 ４３ バネ ４４ バネ ４５ バネ ４６ テンションブラケット ４７ テンショナー ４８ レバー ４９ ナット ５１ スクリュー ５２ 熱ロール ５３ 補正ロール ５４ 開口部 ５５ ガイド ５６ 電熱ヒータ ５７ 赤外線ヒータ ６１ 成形ダイ ６２ 切断具 ６３ 拡開生地 ６４ 熱ロール ６５ 補正ロール ６６ ロール ７０ 押出機 ７１ スクリュー ７２ ギヤ減速機 ７３ ホッパ ７４ バレル ７５ バンドヒータ ７６ スクリーン ７７ アダプタ ７８ 押出ダイ ７９ 押出し生地 ８０ ミキサー（流動混合混練手段） ８１ ミキサー本体 ８２ 上蓋 ８３ 軸 ８４ スクレイパー ８５，８６，８７ 撹拌衝撃翼 ８８ 排出口 ８９ 蓋 ９１ シリンダ ９２ 締付ナット ９３ 排出ダクト ９４ 投入口 ９５ ガス排出管 １００ クーリングミキサー（冷却造粒手段） １０１ ミキサー本体 １０２ ジャケット １０３ アーム １０４ 撹拌破砕翼 １０５ モータ １０６ バルブ １０７ 排出口 １０８ 給水管 １０９ 排水管 １１１ モータ １１２ 減速装置 １１３ 投入口 １１４ フレーム １１５ パウダブレーキ １１６ 歯車 １１７ 歯車 １１８ シリンダ １１９ ガイド体 １２０ カッタミル（整粒手段） １２１ カッタミル本体 １２２ 蓋 １２３ 投入口 １２４ カッタ支持体 １２５ 回転刃 １２６ 固定刃 １２７ 投入室 １２８ 整粒室 １２９ スクリーン １３１ 排出口 10 Molding Die 11 Introductory Part 12 Introducing Hole 13 Introducing Chamber 14, 14a Heater 15 Guide Plate 16 Screen Part 17 Adapter 18 Inlet 19 Extrusion Die 21 Forming Part 22 Forming Chamber 23 Die Outlet 24 Sheet (of Fluorine Resin) 25 Cooling Pipe 27 Pin 28 Mounting tool 29 Forming plate 30, 30a Braking means 31 Pinch roller 31a Fixed pinch roller 31b Flexible pinch roller 32 Shaft 33 Brake drum 34, 34a, 34b Bearing 35 Brake belt 36 Bearing fixed frame 37 Bearing free frame 38 Guide shaft 39 Brake Belt holder 40 Brake tensioner 41 Shaft 42 Fixed plate 43 Spring 44 Spring 45 Spring 46 Tension bracket 47 Tensioner 48 Lever 49 Nut 51 Screw 52 Heat roll 53 Complement Regular roll 54 Opening 55 Guide 56 Electric heater 57 Infrared heater 61 Molding die 62 Cutting tool 63 Expanding fabric 64 Heat roll 65 Compensating roll 66 Roll 70 Extruder 71 Screw 72 Gear reducer 73 Hopper 74 Barrel 75 Band heater 76 Screen 77 Adapter 78 Extrusion die 79 Extrusion dough 80 Mixer (fluid mixing and kneading means) 81 Mixer body 82 Upper lid 83 Shaft 84 Scraper 85,86,87 Stirring impact blade 88 Ejection port 89 Lid 91 Cylinder 92 Tightening nut 93 Exhaust duct 94 Input port 95 Gas discharge pipe 100 Cooling mixer (cooling granulation means) 101 Mixer main body 102 Jacket 103 Arm 104 Stirring and crushing blade 105 Motor 106 Valve 107 Discharge port 108 Water supply pipe 109 Drain pipe 111 Data 112 Speed reducer 113 Input port 114 Frame 115 Powder brake 116 Gear 117 Gear 118 Cylinder 119 Guide body 120 Cutter mill (granulating means) 121 Cutter mill body 122 Lid 123 Input port 124 Cutter support 125 Rotating blade 126 Fixed blade 127 Input chamber 128 sizing chamber 129 screen 131 outlet
Claims (28)
２０メッシュ以下のセルロース系破砕物２０〜７５wt％
に対して熱可塑性樹脂成形材２５〜８０wt％を混合、ゲ
ル化混練し、冷却粉砕して粒径１０mm以下に整粒して成
ることを特徴とする木質合成粉。1. A cellulosic crushed product having an average particle size of 20 mesh or less and having a water content of 15 wt% or less 20 to 75 wt%
On the other hand, 25-80 wt% of a thermoplastic resin molding material is mixed, gelled and kneaded, cooled and pulverized, and sized to a particle size of 10 mm or less.
２０メッシュ以下のセルロース系破砕物２０〜７５wt％
に対して熱可塑性樹脂成形材２５〜８０wt％をともに攪
拌衝撃翼により混合して、摩擦熱によりゲル化混練し、
次いで冷却し、粉砕して粒径１０mm以下に整粒する工程
を少なくとも含むことを特徴とする木質合成粉の製造方
法。2. A crushed cellulosic material having an average particle size of 20 mesh or less and 20 to 75 wt% with a water content of 15 wt% or less.
On the other hand, 25 to 80 wt% of the thermoplastic resin molding material is mixed together by a stirring impact blade and gelled and kneaded by friction heat,
Next, a method for producing a synthetic wood powder comprising at least a step of cooling, pulverizing and sizing to a particle size of 10 mm or less.
２０メッシュ以下のセルロース系破砕物２０〜７５wt％
に対して熱可塑性樹脂成形材２５〜８０wt％をともに混
合して、摩擦熱によりゲル化混練する攪拌衝撃翼を備え
る流動混合混練手段と、 上記ゲル化した混練材料を冷却造粒する内部に攪拌破砕
翼を有し、ジャケットに冷却水の入口および出口を備え
る冷却造粒手段と、 上記冷却造粒した造粒木粉を粒径１０mm以下に整粒する
整粒手段とから成る木質合成粉の製造装置。3. A cellulosic crushed product having an average particle size of 20 mesh or less and having a water content of 15 wt% or less 20 to 75 wt%
In the meanwhile, 25-80 wt% of the thermoplastic resin molding material is mixed together, and the fluidized mixing and kneading means is provided with a stirring impact blade for gelling and kneading by frictional heat, and the above gelled kneading material is cooled and granulated inside. A wood-based synthetic powder comprising a cooling granulating means having a crushing blade and having a jacket provided with an inlet and an outlet of cooling water, and a sizing means for sizing the cooled and granulated granulated wood powder to a particle size of 10 mm or less. Manufacturing equipment.
メッシュ以下のセルロース系破砕物２０〜７５wt％に対
して熱可塑性樹脂成形材２５〜８０wt％を混合、ゲル化
混練し、冷却して粒径１０mm以下に整粒形成した木質合
成粉を加熱、練成し、スクリューをもって成形ダイへ押
出した押出し生地を徐冷し、且つ、この押出し生地に押
出し力に抗する抑制力を加えて押出し生地の密度を高く
して成ることを特徴とする木質合成板。4. An average particle size of 20 with a water content of 15 wt% or less.
Thermoplastic resin molding material 25 to 80 wt% is mixed with cellulosic crushed material 20 to 75 wt% of mesh or less, gelled and kneaded, and cooled to heat and knead the synthetic wood powder which has been sized to a particle size of 10 mm or less. A synthetic wood board characterized in that the extruded dough that is formed and extruded into a forming die with a screw is gradually cooled, and that the extruded dough has a high density by applying a restraining force against the extruding force. .
２０メッシュ以下のセルロース系破砕物２０〜７５wt％
に対して熱可塑性樹脂成形材２５〜８０wt％をともに攪
拌衝撃翼により混合して、摩擦熱によりゲル化混練し、
次いで冷却し、粉砕して粒径１０mm以下に整粒形成した
木質合成粉を加熱、練成し、スクリューをもって成形ダ
イへ押出した押出し生地を徐冷し、且つ、この押出し生
地に押出し力に抗する抑制力を加えて押出し生地の密度
を高くする工程を少なくとも含むことを特徴とする木質
合成板の押出成形方法。5. A crushed cellulosic material having an average particle size of 20 mesh or less and 20 to 75 wt% with a water content of 15 wt% or less.
On the other hand, 25 to 80 wt% of the thermoplastic resin molding material is mixed together by a stirring impact blade and gelled and kneaded by friction heat,
Then, the synthetic wood powder that has been cooled and crushed to form particles having a particle size of 10 mm or less is heated and kneaded, and the extruded dough extruded into a forming die with a screw is gradually cooled, and the extruded dough is resistant to the extruding force. A method for extrusion-molding a wood-based synthetic board, which comprises at least a step of increasing the density of the extruded dough by applying a restraining force of
形材に２０〜７５wt％相当混入し、加熱、練成し、スク
リューをもって成形ダイへ押出し、この押出し生地を、
内壁面にフッ素樹脂のシートを貼設又はフッ素樹脂をコ
ーティングした成形ダイの成形部へ押出して所定の肉厚
に成形し且つ前記成形部で徐冷して押出し成形したこと
を特徴とする木質合成板の押出成形方法。6. A crushed product of a cellulosic material is mixed in a thermoplastic resin molding material in an amount of 20 to 75 wt%, heated and kneaded, and extruded into a molding die with a screw.
A wood-synthesizing method characterized in that a fluororesin sheet is adhered to the inner wall surface or extruded into a molding portion of a molding die coated with fluororesin to form a predetermined thickness and then gradually cooled in the molding portion and extruded. Extrusion molding method for plates.
形材に２０〜７５wt％相当混入し、加熱、練成し、スク
リューをもって成形ダイへ押出し、この押出し生地を、
内壁面にフッ素樹脂のシートを貼設又はフッ素樹脂をコ
ーティングした成形ダイの成形部へ押出して所定の肉厚
に成形し且つ前記成形部で徐冷して押出し成形すると共
に、この成形板の押出し力に抗する抑制力を加えて前記
成形部内の押出し生地の密度を高くしたことを特徴とす
る木質合成板の押出成形方法。7. A crushed cellulosic material is mixed in a thermoplastic resin molding material in an amount of 20 to 75 wt%, heated and kneaded, and extruded into a molding die with a screw.
A sheet of fluororesin is attached to the inner wall surface or extruded into a molding portion of a molding die coated with fluororesin to form a predetermined wall thickness and slowly cooled in the molding portion to extrude, and extruding this formed plate. A method for extrusion-molding a wooden synthetic board, characterized by increasing the density of the extruded dough in the forming part by applying a suppressing force against the force.
熱して成形ダイの成形部へ押出した請求項５〜７いずれ
かに記載の木質合成板の押出成形方法。8. The extrusion molding method for a wood-synthesized board according to any one of claims 5 to 7, wherein the extruded dough is heated at an introduction portion of a molding die and extruded into the molding portion of the molding die.
形材に２０〜７５wt％相当混入し、加熱、練成し、スク
リューをもって押出す押出機の押出ダイに、前記押出ダ
イより吐出された押出し生地を加熱する導入部と、この
導入部から押出された押出し生地を所定の肉厚に成形す
る成形室を備えた成形部から成る成形ダイを連結すると
共に、前記成形部の内壁面にフッ素樹脂のシートを貼設
又はフッ素樹脂をコーティングし且つ成形室を冷却する
冷却手段を成形ダイに設けたことを特徴とする木質合成
板の押出成形装置。9. An extrusion die discharged from the extrusion die of an extruder in which a crushed material of a cellulosic material is mixed in a thermoplastic resin molding material in an amount of 20 to 75 wt%, heated, kneaded, and extruded with a screw. A molding die including a molding unit having a molding chamber for molding the extruded dough extruded from the introduction unit into a predetermined wall thickness is connected to the introduction unit for heating the dough, and a fluororesin is formed on the inner wall surface of the molding unit. An apparatus for extruding a wood-based synthetic board, characterized in that the molding die is provided with a cooling means for pasting the sheet or coating the fluororesin and cooling the molding chamber.
径２０メッシュ以下のセルロース系破砕物２０〜７５wt
％に対して熱可塑性樹脂成形材２５〜８０wt％をともに
混合して、摩擦熱によりゲル化混練する攪拌衝撃翼を備
える流動混合混練手段と、 上記ゲル化した混練材料を冷却造粒する内部に攪拌破砕
翼を有し、ジャケットに冷却水の入口および出口を備え
る冷却造粒手段と、 上記冷却造粒した造粒木粉を粒径１０mm以下に整粒し、
木質合成粉を得る整粒手段と、 前記木質合成粉を加熱、練成し、スクリューをもって押
出す押出機の押出ダイに、前記押出ダイより吐出された
押出し生地を加熱する導入部と、この導入部から押出さ
れた押出し生地を所定の肉厚に成形する成形室を備えた
成形部から成る成形ダイを連結すると共に、前記成形部
の内壁面にフッ素樹脂のシートを貼設又はフッ素樹脂を
コーティングし且つ成形室を冷却する冷却手段を成形ダ
イに設けたことを特徴とする木質合成板の押出成形装
置。10. A crushed cellulosic material having an average particle size of 20 mesh or less and having a water content of 15 wt% or less, 20 to 75 wt.
% Of the thermoplastic resin molding material to 100% by weight, and a fluidized mixing and kneading means provided with a stirring impact blade for gelling and kneading by frictional heat, and an inside for cooling and granulating the gelled kneading material. Cooling granulating means having a stirring and crushing blade and having a jacket with an inlet and an outlet of cooling water; and the granulated wood powder obtained by the cooling granulation was sized to a particle size of 10 mm or less,
A sizing means for obtaining a synthetic wood powder, heating, kneading the synthetic wood powder, to an extrusion die of an extruder for extruding with a screw, an introduction section for heating the extruded dough discharged from the extrusion die, and this introduction. The molding die having a molding chamber for molding the extruded material extruded from the molding section to a predetermined thickness is connected, and a fluororesin sheet is attached or coated on the inner wall surface of the molding section. And a molding device for cooling the molding chamber, wherein the molding die is provided with a cooling means.
により攪拌・混合して、摩擦熱により乾燥し、次いで、
このセルロース系破砕物に、熱可塑性樹脂成形材を攪拌
衝撃翼により混合して、摩擦熱によりゲル化混練し、次
いで冷却し、粉砕して粒径１０mm以下に整粒する工程を
含むことを請求項２又は５記載の木質合成粉の製造方法
又は木質合成板の製造方法。11. The crushed cellulosic material is stirred and mixed by a stirring impact blade, dried by friction heat, and then,
The method includes the step of mixing the crushed cellulose material with a thermoplastic resin molding material by a stirring impact blade, kneading by gelation by frictional heat, cooling, crushing and sizing to a particle size of 10 mm or less. Item 2. A method for producing a woody synthetic powder or a method for producing a woody synthetic board.
ース系破砕物を攪拌衝撃翼の回転による摩擦熱により含
有水分量０．１〜０．３wt％に乾燥する手段を含む請求
項３又は１０記載の木質合成粉の製造装置又は木質合成
板の製造装置。12. The fluid mixing and kneading means includes means for drying the cellulosic crushed material to a water content of 0.1 to 0.3 wt% by frictional heat generated by rotation of a stirring impact blade. Manufacturing equipment for wood synthetic powder or wood synthetic board.
押出し生地を加熱する前記成形ダイの導入部に該導入部
の幅方向の全長の７０〜９５％の全長を有し、且つ該導
入部の高さの７０％以下の高さの案内板を設けたことを
特徴とする請求項９又は１０記載の木質合成板の押出成
形装置。13. The introduction part of the molding die for heating the extruded dough discharged from the extrusion die of the extruder has a total length of 70 to 95% of the total length in the width direction of the introduction part, and the introduction part. An extrusion molding device for a wood-based synthetic board, characterized in that a guide plate having a height of 70% or less of the height is provided.
トを貼設又はフッ素樹脂をコーティングした請求項１３
に記載の木質合成板の押出成形装置。14. A fluororesin sheet is attached or coated with a fluororesin on the surface of the guide plate.
An extrusion molding device for a wood-based synthetic board according to item 1.
押出し力に抗する抑制力を加えるブレーキ手段を設けた
ことを特徴とする請求項９又は１０記載の木質合成板の
押出成形装置。15. The extrusion molding apparatus for a wood-synthesized board according to claim 9, further comprising a brake means for applying a restraining force against the extrusion force of the molding plate extruded from the molding die.
を挟持して圧接する一対を成すピンチローラを設け、こ
のピンチローラの軸端にブレーキドラムを設け、このブ
レーキドラムの回転を抑制する摩擦体を前記ブレーキド
ラムに圧接した請求項１５記載の木質合成板の押出成形
装置。16. The braking means is provided with a pair of pinch rollers that sandwich and press-contact the front and back surfaces of a molded plate, and a brake drum is provided at an axial end of the pinch roller, and friction that suppresses rotation of the brake drum is provided. The extrusion molding device for a wood-based synthetic board according to claim 15, wherein a body is pressed against the brake drum.
を挟持して圧接する上下一対を成すピンチローラを複数
対設け、上部のピンチローラの両軸端に前記ピンチロー
ラを回転自在にエアシリンダのロッド先端を連結し、成
形板を介して下部のピンチローラに対して押圧力を調整
自在に設けた請求項１５記載の木質合成板の押出成形装
置。17. The brake means is provided with a plurality of pairs of upper and lower pinch rollers that sandwich and press-contact the front and back surfaces of a molding plate, and the pinch rollers are rotatably provided at both shaft ends of the upper pinch roller. 16. The extrusion molding apparatus for a wood-synthesized board according to claim 15, wherein the rod tips of the above are connected to each other, and the pressing force is adjustable with respect to the lower pinch roller via the molding board.
を挟持して圧接する上下一対を成すピンチローラを複数
対設け、一のピンチローラの軸端をパウダブレーキの入
力軸に連結すると共に、各ピンチローラの軸端に設けた
歯車を噛合せしめた請求項１５記載の木質合成板の押出
成形装置。18. The braking means is provided with a plurality of pairs of upper and lower pinch rollers that sandwich and press-contact the front and back surfaces of a molded plate, and connect a shaft end of one pinch roller to an input shaft of a powder brake. The extrusion molding device for a wood-synthesized board according to claim 15, wherein gears provided at the shaft ends of the pinch rollers are meshed with each other.
０〜３００メッシュ、好ましくは、６０〜１５０メッシ
ュ、含有水分量を１５wt％以内、好ましくは３〜５wt％
とした木粉である請求項６、７又は９記載の木質合成板
の押出成形方法又は木質合成板の押出成形装置。19. The cellulosic crushed material has a particle size of 5
0 to 300 mesh, preferably 60 to 150 mesh, water content within 15 wt%, preferably 3 to 5 wt%
The method for extruding a wood-based synthetic board or the apparatus for extrusion-molding a wood-based synthetic board according to claim 6, 7 or 9.
〜７５wt％と熱可塑性樹脂成形材としてポリプロピレン
又はポリエチレンの内一種又は数種２５〜４０wt％を混
入する請求項１〜５又は１０いずれかに記載の木質合成
粉、木質合成粉の製造方法、木質合成粉の製造装置、木
質合成板、木質合成板の押出成形方法又は木質合成板の
押出成形装置。20. Wood flour 60 as a cellulosic crushed material
% To 75 wt% and 25 to 40 wt% of one or several kinds of polypropylene or polyethylene as a thermoplastic resin molding material are mixed, the synthetic wood powder, the method for producing a synthetic wood powder, and the wood An apparatus for producing synthetic powder, a wooden synthetic board, an extrusion molding method for a wooden synthetic board, or an extrusion molding apparatus for a wooden synthetic board.
〜６５wt％と熱可塑性樹脂成形材としてポリカーボネイ
ト、ナイロン、又はＰＶＣ３５〜４０wt％を混入する１
〜５又は１０いずれかに記載の木質合成粉の製造方法、
木質合成粉の製造装置、木質合成板、木質合成板の押出
成形方法又は木質合成板の押出成形装置。21. Wood flour 60 as a cellulosic crushed material
〜65wt% mixed with polycarbonate, nylon, or PVC35-40wt% as thermoplastic resin molding material 1
To 5 or 10, a method for producing a synthetic wood powder,
An apparatus for producing a synthetic wood powder, a synthetic wood board, an extrusion molding method for a synthetic wood board, or an extrusion molding machine for a synthetic wood board.
系破砕物に対して１wt％混入する請求項２、３、５又は
１０いずれかに記載の木質合成粉の製造方法、木質合成
粉の製造装置、木質合成板の押出成形方法又は木質合成
板の押出成形装置。22. The method for producing a synthetic wood powder and the apparatus for producing a synthetic wood powder according to claim 2, wherein 1 wt% of a 40% concentration aqueous urea solution is mixed with the crushed cellulosic material. A method for extruding a wooden synthetic board or an apparatus for extruding a wooden synthetic board.
ロース系破砕物及び熱可塑性樹脂成形材に対して５〜２
０wt％混入する請求項２、３、５又は１０いずれかに記
載の木質合成粉の製造方法、木質合成粉の製造装置、木
質合成板の押出成形方法又は木質合成板の押出成形装
置。23. Calcium carbonate or titanium oxide is used in an amount of 5 to 2 with respect to the cellulosic crushed material and the thermoplastic resin molding material.
The method for producing a woody synthetic powder, the apparatus for producing a woody synthetic powder, the method for extruding a woody synthetic board or the apparatus for extruding a woody synthetic board according to any one of claims 2, 3, 5 and 10, wherein 0 wt% is mixed.
成形材に３０〜７０wt％混入する請求項６、７又は９記
載の木質合成板の押出成形方法又は木質合成板の押出成
形装置。24. The method for extrusion-molding a wood-synthesized board or the extrusion-molding apparatus for a wood-synthesized board according to claim 6, 7 or 9, wherein a crushed material of a cellulosic material is mixed in a thermoplastic resin molding material in an amount of 30 to 70 wt%.
幅方向に形成され、縦断面が楕円形に膨出形成され導入
孔を有する請求項９又は１０記載の木質合成板の押出成
形装置。25. The extrusion molding device for a wood-synthesized board according to claim 9 or 10, wherein the introduction portion is formed in the molding die in the width direction of the molding die, has a vertical cross-section swelled to have an elliptical shape, and has an introduction hole. .
し、両端が成形室入口長手方向の両端に及ぶコート・ハ
ンガー型に形成し、且つ、前記導入孔から成形室入口間
は、成形室に向かって縦断面が徐々に狭くなる方向に断
面三角形を成す導入室を有する請求項９又は１０記載の
木質合成板の押出成形装置。26. The introduction portion is formed in a coat-hanger type which is curved in the width direction of the molding die and has both ends extending to both ends in the longitudinal direction of the molding chamber inlet, and a portion between the introduction hole and the molding chamber inlet is the molding chamber. The extrusion molding device for a wood-synthesized board according to claim 9 or 10, further comprising: an introduction chamber having a triangular cross-section in a direction in which a vertical cross section gradually narrows toward the front.
形ダイを連通するよう設けた請求項９又は１０記載の木
質合成板の押出成形装置。27. The extrusion molding apparatus for a wood-based synthetic board according to claim 9, wherein the extrusion die of the one extruder is provided so as to communicate with the second molding die.
成形部の成形室の高さと同等以下の高さを有する方形の
射出口を形成し、この射出口に向けて徐々に狭く断面変
化するよう形成した請求項９又は１０記載の木質合成板
の押出成形装置。28. The extrusion die of the extruder forms a rectangular injection port having a height equal to or less than the height of the molding chamber of the molding portion of the molding die, and the cross-section changes gradually toward the injection port. An extrusion molding apparatus for a wood-based synthetic board according to claim 9 or 10, which is formed to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6194416A JPH07266313A (en) | 1994-02-10 | 1994-08-18 | Woody synthetic powder, its manufacture and device, woody synthetic plate using the powder, and method and apparatus for extrusion molding the plate |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1679494 | 1994-02-10 | ||
| JP6-16794 | 1994-02-10 | ||
| JP6194416A JPH07266313A (en) | 1994-02-10 | 1994-08-18 | Woody synthetic powder, its manufacture and device, woody synthetic plate using the powder, and method and apparatus for extrusion molding the plate |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004116843A Division JP2004216910A (en) | 1994-02-10 | 2004-04-12 | Manufacturing device for ligneous synthetic powder and extrusion-molding device for ligneous synthetic board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07266313A true JPH07266313A (en) | 1995-10-17 |
Family
ID=26353191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6194416A Pending JPH07266313A (en) | 1994-02-10 | 1994-08-18 | Woody synthetic powder, its manufacture and device, woody synthetic plate using the powder, and method and apparatus for extrusion molding the plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07266313A (en) |
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| US5785259A (en) * | 1996-03-18 | 1998-07-28 | Ein Engineering Co., Ltd. | Process for regenerating laminated thermoplastic molded resin articles and apparatus for regenerating the same |
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| JP2006082353A (en) * | 2004-09-15 | 2006-03-30 | Sekisui Chem Co Ltd | Woody thermoplastic resin composition and method for producing woody thermoplastic resin molding |
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|---|---|---|---|---|
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| JP2002316352A (en) * | 2001-04-20 | 2002-10-29 | Ain Eng Kk | Extrusion-molding device for woody synthetic board |
| KR100894529B1 (en) * | 2001-05-10 | 2009-04-24 | 미자와홈즈가부시끼가이샤 | Method for producing woody moldings and apparatus for producing woody moldings |
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| JP2012007014A (en) * | 2010-06-22 | 2012-01-12 | Wpc Corporation Kk | Composite pellet for extrusion molding, and pretreatment method of the composite pellet for extrusion molding |
| JP2014509565A (en) * | 2011-03-30 | 2014-04-21 | エルジー・ハウシス・リミテッド | Synthetic wood with elastic layer |
| JP2012056318A (en) * | 2011-11-09 | 2012-03-22 | Nichias Corp | Hard polyurethane foam producing apparatus |
| WO2013094490A1 (en) | 2011-12-20 | 2013-06-27 | Ｗｐｃコーポレーション株式会社 | Woody synthetic powder |
| CN111089443A (en) * | 2019-12-12 | 2020-05-01 | 浙江荣凯科技发展有限公司 | Circulating water cooling system for phenolic resin synthesis |
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