JPH10244515A - Composite board - Google Patents
Composite boardInfo
- Publication number
- JPH10244515A JPH10244515A JP12531198A JP12531198A JPH10244515A JP H10244515 A JPH10244515 A JP H10244515A JP 12531198 A JP12531198 A JP 12531198A JP 12531198 A JP12531198 A JP 12531198A JP H10244515 A JPH10244515 A JP H10244515A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- layer
- wood fiber
- composite board
- thickness
- 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.)
- Pending
Links
Landscapes
- Veneer Processing And Manufacture Of Plywood (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建材用または家具
用部材として用いられる複合板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite board used as a building material or a member for furniture.
【０００２】[0002]
【従来の技術】一般に挽材、合板、単板積層板（L.V.
L.，L.V.B.）等の木質板は、建築用および家具用部材と
して多種多様な用途に用いられているが、これらは一定
の繊維方向を有するため、水分の吸放出により膨張収縮
が発生し、特に繊維方向に直交する方向への膨張率が大
きく、寸法安定性に欠けるという問題点を有していた。2. Description of the Related Art Generally, sawn timber, plywood, laminated veneer (LV)
L., LVB) and other wood boards are used in a wide variety of applications as architectural and furniture components, but since they have a certain fiber direction, they expand and contract due to the absorption and release of moisture, In particular, there was a problem that the expansion rate in the direction perpendicular to the fiber direction was large and the dimensional stability was lacking.
【０００３】また、表面に導管溝が存在するため、表面
塗装、紙貼り等の加工の際にはシーラー処理、目止処理
等の下地処理を施す必要があった。[0003] In addition, since there is a conduit groove on the surface, it is necessary to perform a base treatment such as a sealer treatment and a sealing treatment at the time of processing such as surface coating and paper sticking.
【０００４】さらに、最近良質木の枯渇によりこのよう
な木質板は高価になる傾向が高く、そのため、木材小片
を接着してなる木削片板が安価で且つ資源の有効利用に
適合した材料であるとして注目されている。[0004] Furthermore, due to the recent depletion of high-quality trees, such wooden boards tend to be expensive. Therefore, wood chipboards made by bonding small pieces of wood are inexpensive materials suitable for effective use of resources. Attention has been paid to it.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、木削片
板は、木削片を接着して得られるものであるため、表面
が非常に粗く表面への化粧が難しい。したがって、一般
には、厚い化粧シート状物が用いられる傾向にあり、高
価なものとなってしまう。However, since the wood chipboard is obtained by bonding wood chips, the surface is very rough and it is difficult to make up the surface. Therefore, in general, a thick decorative sheet tends to be used, which is expensive.
【０００６】また、木削片板は表面剥離強度が低く、個
々に複雑な繊維方向を持った木削片の集合であるため、
水分の吸放出による膨張収縮が著しく、化粧シート状物
の剥がれやクラックが発生しやすい。さらに、これを防
止するために尿素樹脂やフェノール樹脂等の接着剤を多
量に用いて化粧シート状物を貼着すると、ホルマリン臭
が強く残り、家具等に用いた場合にはこのホルマリン臭
が家具内にこもって不快なものとなっていた。[0006] In addition, the wood chipboard is a collection of wood chips having low surface peel strength and individually having complicated fiber directions.
The expansion and contraction due to the absorption and release of water is remarkable, and the decorative sheet is easily peeled or cracked. Furthermore, when a decorative sheet is adhered using a large amount of an adhesive such as urea resin or phenol resin to prevent this, a strong formalin smell remains. It was inside and uncomfortable.
【０００７】このような木削片板を改良したものとし
て、表裏層の木削片は密で薄く、中心層の木削片が粗な
ものから構成された３層ボードが知られている。この３
層ボードは、単層の木削片板に比べて表面がある程度の
平滑性を有すると共に、曲げ強度の改善が図られるが、
前述のような木削片板の持つ根本的な欠点を依然として
有するものである。As an improvement of such a wood chip board, there is known a three-layer board in which the wood chips of the front and back layers are dense and thin, and the wood chips of the central layer are coarse. This 3
The layer board has a certain surface smoothness compared to a single-layer wood chipboard, and the bending strength is improved,
It still has the fundamental disadvantages of wood chipboard as described above.
【０００８】さらには、この３層ボードにおいて表面平
滑性を高めるために表層の木削片を短く（細かく）薄い
ものにすれば、木削片同士の結合力（絡み合い）が小さ
くなり、同様の曲げ強度を維持するためには多量の接着
剤を必要とする等の問題点を有していた。Further, if the wood chips of the surface layer are made short (fine) and thin in order to enhance the surface smoothness of the three-layer board, the bonding force (entanglement) between the wood chips becomes small, and the same applies. In order to maintain the bending strength, there is a problem that a large amount of adhesive is required.
【０００９】[0009]
【課題を解決するための手段】このような現状に鑑み、
本発明者は、安価な木削片板の有する問題点を解決すべ
く鋭意研究を重ねた結果、本発明を完成するに至った。In view of the above situation,
The present inventor has conducted intensive studies to solve the problems of inexpensive wood chipboard, and as a result, has completed the present invention.
【００１０】すなわち、請求項１記載の本発明は、表面
のみあるいは表裏に木質繊維層を配し、表面の木質繊維
層の裏面あるいは表裏の木質繊維層間に木削片層を配し
てなるものにおいて、木質繊維層の比重が木削片層より
大きく、且つ、木削片層の厚さが木質繊維層の厚さより
厚いことを特徴とする複合板である。That is, according to the present invention, a wood fiber layer is provided only on the front surface or on the front and back, and a wood chip layer is provided on the back surface of the wood fiber layer on the front surface or between the wood fiber layers on the front and back. Wherein the specific gravity of the wood fiber layer is greater than the wood chip layer, and the thickness of the wood chip layer is greater than the thickness of the wood fiber layer.
【００１１】木質繊維層の厚さは木削片層の厚さの１／
２以下とすることができる（請求項２）。The thickness of the wood fiber layer is 1 / th of the thickness of the wood chip layer.
2 or less (claim 2).
【００１２】[0012]
【発明の実施の形態】以下本発明の複合板に関して図面
に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A composite plate according to the present invention will be described below with reference to the drawings.
【００１３】図１は本発明の一態様による複合板の構成
を示し、表裏面に木質繊維層１、１が配され、それらの
間に木削片層２が配されてなる。FIG. 1 shows the structure of a composite board according to one embodiment of the present invention, in which wood fiber layers 1 and 1 are arranged on the front and back surfaces, and a wood chip layer 2 is arranged between them.
【００１４】木質繊維層１としては、たとえばラワン、
カポール、栗、ポプラ等の広葉樹材あるいは松、杉、桧
等の針葉樹材を原料として得られた木質繊維層を挙げる
ことができる。As the wood fiber layer 1, for example, Lauan,
Wood fiber layers obtained from hardwood materials such as kapole, chestnut and poplar or softwood materials such as pine, cedar and cypress as raw materials can be mentioned.
【００１５】針葉樹材と広葉樹材とを比較すると、針葉
樹材から得られる木質繊維は繊維が細く長く白色系であ
るのに対し、広葉樹材から得られる木質繊維は繊維が粗
く色調が褐色系に近い。A comparison between softwood and hardwood is that wood fibers obtained from softwood have thin and long fibers and white wood, whereas wood fibers obtained from hardwood have coarse fibers and a color tone close to brown. .
【００１６】したがって、木質繊維に接着剤を添加乾燥
したものを熱圧して得られる木質繊維板においても、針
葉樹材を用いたものは表面が平滑で白色系となるため、
その後の表面化粧として塗装による表面化粧処理や薄い
突板、化粧紙等の接着化粧処理を施すのに適したものと
なる。[0016] Accordingly, even in the case of a wood fiber board obtained by adding an adhesive to wood fibers and drying the wood fiber, the wood fiber board obtained using softwood has a smooth surface and a white color.
As a subsequent surface makeup, it is suitable for performing a surface makeup treatment by painting or an adhesive makeup treatment for thin veneer, decorative paper or the like.
【００１７】一方、広葉樹材から得られる木質繊維を用
いた木質繊維板は、表面が粗く褐色系を呈するため、表
面化粧として塗装を施すには適せず、粗い表面により発
揮される優れた投錨効果を利用して表面に突板や化粧紙
等を貼着して化粧処理を施すのに適している。On the other hand, a wood fiber board using wood fibers obtained from hardwood has a rough surface and exhibits a brownish color. Therefore, the wood fiber board is not suitable for painting as a surface makeup and has an excellent anchoring effect exhibited by the rough surface. It is suitable for applying a veneer or a decorative paper to the surface by using the effect to perform a cosmetic treatment.
【００１８】このように、木質繊維層１としては、その
複合板としての用途により、針葉樹材および広葉樹材の
うちの適したものを適宜選択して用いることが好まし
い。As described above, as the wood fiber layer 1, it is preferable to appropriately select and use a suitable one from softwood and hardwood depending on the use as a composite board.
【００１９】木削片層２としては、小径木、製材廃材、
原木むき芯、廃材チップ等を原料として得られた木削片
が用いられる。また、切削および破砕することにより得
た小片に接着剤を添加し熱圧した木削片板を用いること
ができる。The wood chip layer 2 includes small-diameter wood, sawmill waste,
Wood chips obtained from raw wood cores, waste wood chips and the like are used. In addition, a wood chipboard obtained by adding an adhesive to a small piece obtained by cutting and crushing and hot-pressing it can be used.
【００２０】木質繊維層１の比重は木削片層２の比重よ
りも大きいものとされる。これにより、複合板の表面に
外力が加わった場合、表面側の比重の大きな木質繊維層
１の圧縮強度に加えて裏面側の比重の大きな木質繊維層
１の引っ張り強度、さらにはこれら木質繊維層１、１に
よる拘束力が相まって優れた曲げヤング率（剛性）を示
すこととなり、中心に比重の小さな木削片層２を配する
ことにより全体の軽量化およびコストダウンを図りなが
らも、強度の高い複合板が得られる。The specific gravity of the wood fiber layer 1 is larger than the specific gravity of the wood chip layer 2. Thereby, when an external force is applied to the surface of the composite board, in addition to the compressive strength of the wood fiber layer 1 having a large specific gravity on the front side, the tensile strength of the wood fiber layer 1 having a large specific gravity on the back side is further increased. Due to the binding force of 1, 1, excellent bending Young's modulus (rigidity) is exhibited. By arranging the wood chip layer 2 having a small specific gravity at the center, the overall weight is reduced and the cost is reduced, but the strength is increased. A high composite board is obtained.
【００２１】また、木削片層２は比重が０．２５〜１．
０５の範囲内にあることが好適である。比重が０．２５
に満たないような木削片層を用いた複合板は曲げヤング
率が不十分となり、また、比重が１．０５を越えるよう
な木削片層を用いることは複合板としての全体重量を増
大させるので好ましくない。The wood chip layer 2 has a specific gravity of 0.25-1.
05. Specific gravity 0.25
A composite board using a wood chip layer that is less than 10% has an insufficient bending Young's modulus, and using a wood chip layer having a specific gravity exceeding 1.05 increases the overall weight of the composite board. Is not preferred.
【００２２】木削片層２の厚さは表面または表裏の木質
繊維層１の厚さより厚いものとされる。すなわち、表面
または表裏の比重の高い木質繊維層の厚さに対して、比
重の低い木削片層の厚さを厚くすることにより、複合板
としての曲げ強度を保持しながら全体の軽量化を図るこ
とができる。木質繊維層が木削片層の厚さの１／２を超
えるものとなっても複合板としての曲げヤング率はそれ
ほど変わらず、むしろ重量増を招くことによる取扱性等
の低下が大きな問題となるため、木質繊維層の厚さを木
削片層の厚さの１／２以下とすることが好適である。The thickness of the wood chip layer 2 is set to be larger than the thickness of the wood fiber layer 1 on the front or front and back. In other words, by increasing the thickness of the wood chip layer having a low specific gravity relative to the thickness of the wood fiber layer having a high specific gravity on the surface or front and back, the overall weight is reduced while maintaining the bending strength of the composite board. Can be planned. Even if the wood fiber layer exceeds half the thickness of the wood chip layer, the bending Young's modulus of the composite board does not change so much, but rather, a decrease in handleability due to an increase in weight is a major problem. Therefore, it is preferable that the thickness of the wood fiber layer be equal to or less than half the thickness of the wood chip layer.
【００２３】本発明の複合板は、水分の吸放出に伴う膨
張収縮に対して安定で表面平滑な木質繊維層１が表面に
配されているため、表面化粧性に優れ、突板、化粧紙、
塩化ビニルその他の合成樹脂シート等のシート状化粧材
の表面貼り加工、プレス成形によるオーバーレイ加工、
表面塗装加工等による化粧を容易に且つ体裁よく行うこ
とができる。The composite board of the present invention is provided with a wood fiber layer 1 having a smooth surface which is stable against expansion and contraction caused by the absorption and release of moisture, and has excellent surface decorativeness.
Surface application of sheet-like decorative materials such as vinyl chloride and other synthetic resin sheets, overlay processing by press molding,
Make-up by surface painting or the like can be performed easily and well.
【００２４】また、木質繊維層は細長い繊維が絡み合っ
て層を形成しているため、曲げ強度が良好であり、表面
の圧縮強度にも優れている。したがって、複合板として
軽量で安価に製造可能でありながらも、曲げ強度および
表面硬度に優れたものとなる。Further, the wood fiber layer has a good bending strength and a good surface compressive strength because the long and thin fibers are intertwined to form a layer. Therefore, the composite plate is excellent in bending strength and surface hardness while being lightweight and inexpensive to manufacture.
【００２５】本発明の複合板の製造方法について説明す
ると、図２に示すように、木質繊維製造ラインと木削片
製造ラインにより、それぞれ接着剤の添加された木質繊
維と木削片を得、表面のみあるいは表裏面に接着剤を添
加された木質繊維からなる木質繊維層を配し、表面の木
質繊維層の裏面あるいは表裏の木質繊維層の間に木削片
層を配するように積層した後、圧締して接着一体成形す
ることにより製造することができる。The method for manufacturing a composite board according to the present invention will be described. As shown in FIG. 2, a wood fiber production line and a wood chip production line obtain wood fibers and wood chips to which an adhesive is added, respectively. A wood fiber layer made of wood fiber with an adhesive added only on the front surface or the front and back surfaces was arranged, and the wood chip layer was disposed between the back surface of the front wood fiber layer or the wood fiber layer between the front and back surfaces. Thereafter, it can be manufactured by pressing and pressing to form an integrated adhesive.
【００２６】各工程について以下に詳述する。 （木質繊維製造ライン）木質繊維として、松、杉、桧等
の針葉樹材またはラワン、カポール、栗、ポプラ等の広
葉樹材をチップにした後、常法に従い 解繊 し、含水率
２０％以下、好ましくは１０％以下に乾燥したものを用
いることができる。これら木質繊維は長さ１〜３０ｍ
ｍ、太さ直径２〜３００μ程度のものが大半を占める。
この木質繊維は、導管、仮導管または細胞が束になった
ような形をしており、繊維外周部の細胞壁は引き裂かれ
たり、割れ目を生じたりしているものが多い。Each step will be described in detail below. (Wood fiber production line) As wood fiber, softwood materials such as pine, cedar, cypress, etc. or hardwood materials such as Rawan, Kapole, chestnut, poplar etc. are made into chips, which are defibrated according to a conventional method, and the water content is 20% or less. Preferably, those dried to 10% or less can be used. These wood fibers are 1-30m long
Most of them have a m and a diameter of about 2 to 300 μm.
The wood fiber has a shape of a bundle of conduits, temporary conduits, or cells, and the cell wall around the fiber is often torn or cracked.
【００２７】この木質繊維に尿素樹脂系接着剤、フェノ
ール樹脂系接着剤、メラミン樹脂系接着剤、エポキシ樹
脂系接着剤、イソシアネート・酢酸ビニル樹脂系接着剤
またはこれらの変性合成樹脂接着剤を添加混合する。A urea resin adhesive, a phenol resin adhesive, a melamine resin adhesive, an epoxy resin adhesive, an isocyanate / vinyl acetate resin adhesive, or a modified synthetic resin adhesive thereof is added to the wood fiber. I do.
【００２８】接着剤を付着された木質繊維を、熱風ダク
ト中に投入し、風送しながら乾燥する。この際の風送速
度は約１５〜２０ｍ／秒であるが、木質繊維の比重、送
り量、前後の工程の処理能力等によって広範囲に調整さ
れるものである。The wood fiber to which the adhesive has been applied is put into a hot air duct and dried while blowing. The air blowing speed at this time is about 15 to 20 m / sec, but is adjusted over a wide range according to the specific gravity of the wood fiber, the feeding amount, the processing capacity of the preceding and following steps, and the like.
【００２９】この熱風による風送で木質繊維は６〜１５
％程度の含水率にまで乾燥された後、フォーミング装置
３、３（図３）に搬送される。 （木削片製造ライン）小径木、製材廃材、原木むき芯、
廃材チップ等を原料に用い、切削および破砕さらに必要
に応じて二次破砕することにより木材小片からなる木削
片を得る。木削片の片形状はチップ状、フレーク状、ス
ティック状等の任意形状とされる。The wood fibers are blown by the hot air to a volume of 6 to 15
After being dried to a moisture content of about%, it is conveyed to the forming devices 3 and 3 (FIG. 3). (Wood chip production line) small diameter wood, sawn wood, raw wood core,
A wood chip made of small wood pieces is obtained by cutting and crushing and, if necessary, secondary crushing using a waste material chip or the like as a raw material. The shape of the wood chips is an arbitrary shape such as a chip shape, a flake shape, and a stick shape.
【００３０】この木削片を必要に応じて選別し均一な大
きさと形状に揃え、含水率６〜１５％にまで乾燥する。
次いで、この木削片に接着剤を添加混合する。この際の
接着剤としては、木質繊維について用いた前述の接着剤
と同様のものを用いることができる。The wood chips are sorted as required, adjusted to a uniform size and shape, and dried to a water content of 6 to 15%.
Next, an adhesive is added to the wood chip and mixed. As the adhesive at this time, the same adhesive as the above-mentioned adhesive used for the wood fiber can be used.
【００３１】接着剤を付着された木削片は、必要に応じ
て乾燥された後、フォーミング装置４（図３）に搬送さ
れる。 （フォーミング熱圧締）各ラインによりフォーミング装
置３、４に搬送された木質繊維および木削片は、図３に
示すようにに積層堆積され、表裏層が木質繊維層１、
１、中心が木削片層２からなる３層マットを形成する。The wood chip to which the adhesive has been applied is dried if necessary, and then conveyed to a forming device 4 (FIG. 3). (Forming hot pressing) The wood fibers and wood chips conveyed to the forming devices 3 and 4 by the respective lines are stacked and deposited as shown in FIG.
1. A three-layer mat consisting of a wood chip layer 2 at the center is formed.
【００３２】この３層マットを切断機５により適当なサ
イズに切断した後、ホットプレス装置６にて熱圧成形す
ることにより、本発明の複合板が製造される。After the three-layer mat is cut into an appropriate size by the cutting machine 5 and hot-pressed by the hot press device 6, the composite plate of the present invention is manufactured.
【００３３】フォーミング装置４による木削片のフォー
ミングを配向性を与えながら行って、配向性木削片層と
してもよい。The shaping of the wood chip by the forming device 4 may be performed while giving an orientation to form an oriented wood chip layer.
【００３４】また、本発明の複合板は、常法に従い予め
別々に製造した木質繊維板と木削片板とを、少なくとも
表面または表裏面に木質繊維板が配置されるように、尿
素樹脂系、フェノール樹脂系または水性ビニルウレタン
樹脂系接着剤を介して積層した後、ホットプレスにより
圧締接着することによって製造することもできる。Further, the composite board of the present invention is prepared by combining a wood fiber board and a wood chip board separately manufactured in advance according to a conventional method with a urea resin-based material so that the wood fiber board is arranged at least on the front surface or the front and back surfaces. It can also be manufactured by laminating via a phenolic resin-based or aqueous vinyl urethane resin-based adhesive, and then press-bonding with a hot press.
【００３５】このように木質繊維板と木削片板とを接着
一体化して複合板を得る場合には、製造工程における熱
圧の温度、圧力あるいは時間の調整により、任意の比重
を有する木質繊維板および木削片板を選択的に用いるこ
とができる。すなわち、木質繊維板には、比重が０．４
以下の軟質繊維板、０．４〜０．８の中質繊維板および
０．８以上の硬質繊維板から任意の比重を有するものを
選択して用いることができる。同様に、木削片層には、
比重が０．３前後の軽量木削片板、０．４〜０．８の中
質木削片板、０．８〜１．０５の硬質木削片層から任意
の比重を有するものを選択して用いることができる。こ
の方法によれば、木質繊維層１の比重を木削片層２の比
重よりも大きく設定される複合板を容易に製造すること
ができる。When a composite board is obtained by bonding and integrating a wood fiber board and a wood chipboard as described above, the wood fiber having an arbitrary specific gravity is adjusted by adjusting the temperature, pressure or time of the heat and pressure in the manufacturing process. Boards and wood chipboards can be used selectively. That is, the specific gravity of the wood fiberboard is 0.4
Any of the following soft fiber boards, medium fiber boards of 0.4 to 0.8 and hard fiber boards of 0.8 or more can be selected and used. Similarly, in the wood chip layer,
Select a wood chipboard with a specific gravity of about 0.3, a medium wood chipboard of 0.4 to 0.8, and a hard wood chip layer of 0.8 to 1.05 with an arbitrary specific gravity Can be used. According to this method, a composite board in which the specific gravity of the wood fiber layer 1 is set to be larger than the specific gravity of the wood chip layer 2 can be easily manufactured.
【００３６】また、木質繊維層１と木削片層２の厚さ調
整も自由に行うことができるため、複合板として要求さ
れる強度および重量を有する複合板を容易に得ることが
できる。Further, since the thickness of the wood fiber layer 1 and the wood chip layer 2 can be freely adjusted, a composite board having the strength and weight required as a composite board can be easily obtained.
【００３７】あるいは、本発明によれば、木質繊維層１
を針葉樹材で、木削片層２を広葉樹材で構成したり、逆
に木質繊維層１を広葉樹材で、木削片層２を針葉樹材で
構成する等、各構成樹材を異なるものとすることも容易
であり、用途に応じた自由な選択が可能である。Alternatively, according to the present invention, the wood fiber layer 1
Is made of softwood, the wood shaving layer 2 is made of hardwood, or the wood fiber layer 1 is made of hardwood, and the wood shaving layer 2 is made of softwood. It is also easy to make the selection, and free selection according to the application is possible.
【００３８】以上においては、表裏面に木質繊維層１、
１を配し、その間に木削片層２を有する３層の複合板に
ついて説明したが、用途により、表面のみに木質繊維層
１を配し、その裏面に木削片層１を有する２層からなる
複合板として本発明を構成してもよい。In the above, the wood fiber layer 1 is provided on the front and back surfaces.
1 has been described, and a three-layer composite board having a wood chip layer 2 between them has been described. However, depending on the application, a two-layered wood fiber layer 1 is provided only on the front surface and the wood chip layer 1 is provided on the back surface The present invention may be configured as a composite plate composed of:
【００３９】以下、本発明をより具体的に説明するため
に本発明の好適な一実施例を記述する。 （木質繊維製造）ラジアータパインのチップを１６０
℃、７ｋｇ／ｃｍ２で５分間煮沸して脱脂、軟化処理を
行った。このチップをデファイブレーター式リファイナ
ーで解繊し、得られた木質繊維を乾燥した。Hereinafter, a preferred embodiment of the present invention will be described in order to explain the present invention more specifically. (Wood fiber production) 160 chips of radiata pine
The mixture was boiled at 7 ° C. and 7 kg / cm 2 for 5 minutes to perform degreasing and softening treatment. The chips were defibrated by a defibrator type refiner, and the obtained wood fibers were dried.
【００４０】この木質繊維をブレンダーに投入し、該ブ
レンダー内において木質繊維量に対して４％のワックス
サイズ剤および１０％のフェノール樹脂接着剤を添加混
合した後、フォーミング装置に搬送した。 （木削片製造）ラジアータパイン原木または廃材をフレ
ーカーに投入してフレーク状の木削片を得た。この木削
片を乾燥した後、仕分けして適正フレーク状木削片を得
た。The wood fiber was put into a blender, and a wax sizing agent and a phenol resin adhesive of 4% and 10%, respectively, based on the amount of the wood fiber were added and mixed in the blender, and then conveyed to a forming apparatus. (Manufacture of wood chips) Raw radiata pine wood or waste material was charged into a flaker to obtain flake-shaped wood chips. After the wood chips were dried, they were sorted to obtain appropriate flake-shaped wood chips.
【００４１】この木削片を連続式ミキサーに投入し、該
ミキサー内において木削片量に対し１％のワックスサイ
ズ剤および８％のフェノール樹脂接着剤を添加混合した
後、フォーミング装置に搬送した。 （マット形成・熱圧締）上記のようにして搬送された木
質繊維および木削片を、スクリーンコンベア上に、コン
ベアの搬送方向において下流側から、木質繊維のフォー
ミング装置３、木削片のフォーミング装置４、木質繊維
のフォーミング装置３の順に設置された角フォーミング
装置によりスクリーンコンベア上に落下させ、表面側か
ら木質繊維／木削片／木質繊維の順に積層された連続３
層マットを形成した。The wood chips were put into a continuous mixer, and 1% of a wax sizing agent and 8% of a phenol resin adhesive were added and mixed with the wood chips in the mixer, and then conveyed to a forming device. . (Mat formation / Hot pressing) The wood fiber and wood chips conveyed as described above are placed on a screen conveyor from the downstream side in the conveying direction of the conveyor from the wood fiber forming device 3, forming the wood chips. An apparatus 4 and a forming apparatus 3 for wood fiber are dropped on a screen conveyor by a square forming apparatus installed in this order, and a continuous 3 is laminated from the front side in the order of wood fiber / wood shavings / wood fiber.
A layer mat was formed.
【００４２】この連続３層マットを、切断機５によりそ
の幅および長さを所定寸法に切断した後、ホットプレス
６に挿入して２００℃にて５分間熱圧成形し、各々５ｍ
ｍ厚の表裏木質繊維層１、１の間に１５ｍｍ厚の木削片
層２が配されてなる、全体厚み２５ｍｍ、３’ｘ６’サ
イズの複合板を得た。The continuous three-layer mat is cut into a predetermined size by a cutting machine 5 in a width and a length, and then inserted into a hot press 6 and hot-pressed at 200 ° C. for 5 minutes, each having a length of 5 m.
A composite board having an overall thickness of 25 mm and a size of 3 ′ × 6 ′ was obtained, in which a wood cutting layer 2 having a thickness of 15 mm was disposed between the front and back wood fiber layers 1 and 1 having a thickness of m.
【００４３】得られた複合板中の木質繊維層１、１の比
重は０．７、木削片層２の比重は０．５であり、複合板
全体としての比重は０．６であった。The specific gravity of the wood fiber layers 1 and 1 in the obtained composite board was 0.7, the specific gravity of the wood chipping layer 2 was 0.5, and the specific gravity of the entire composite board was 0.6. .
【００４４】[0044]
【発明の効果】本発明によれば、安価な木削片を用い、
この木削片層の表面または表裏面に木質繊維層を設ける
ことにより、表面平滑で化粧性が良好であり、しかも表
面剥離強度にも優れた性能を有するものとされ、木削片
板の有する吸水吸湿による膨張収縮等の問題を解決した
優れた複合板を提供することができる。According to the present invention, inexpensive wood chips are used,
By providing a wood fiber layer on the front surface or the back surface of this wood chip layer, the surface is smooth and the cosmetic properties are good, and the surface peel strength is also excellent. It is possible to provide an excellent composite board that solves problems such as expansion and contraction due to water absorption and absorption.
【００４５】また、木質繊維層を木削片層より高比重と
し、且つ、比重の高い木質繊維層の厚さを比重の低い木
削片層よりも薄く、好ましくは１／２以下とされている
ので、複合板としての曲げ強度を保持しつつ全体の軽量
化を図ることができる。Further, the wood fiber layer has a higher specific gravity than the wood chip layer, and the thickness of the wood fiber layer having a higher specific gravity is smaller than that of the wood chip layer having a lower specific gravity, preferably １ ／ or less. As a result, the overall weight can be reduced while maintaining the bending strength of the composite plate.
【図１】本発明の一態様による複合板を示す斜視図であ
る。FIG. 1 is a perspective view showing a composite board according to one embodiment of the present invention.
【図２】本発明の複合板の製造工程を示す図である。FIG. 2 is a view showing a manufacturing process of the composite board of the present invention.
【図３】図２の製造工程中のフォーミングから熱圧締に
至るラインを概略的に示す説明図である。FIG. 3 is an explanatory view schematically showing a line from forming to hot pressing in the manufacturing process of FIG. 2;
１ 木質繊維層 ２ 木削片層 1 Wood fiber layer 2 Wood chip layer
Claims (2)
し、表面の木質繊維層の裏面あるいは表裏の木質繊維層
間に木削片層を配してなるものにおいて、木質繊維層の
比重が木削片層の比重より大きく、且つ、木削片層の厚
さが木質繊維層の厚さより厚いことを特徴とする複合
板。1. A wood fiber layer having a wood fiber layer disposed only on the front surface or the front and back surfaces, and a wood chip layer disposed between the back surface of the front wood fiber layer and the wood fiber layer between the front and back surfaces. A composite board having a specific gravity greater than that of the wood chip layer and a thickness of the wood chip layer being greater than a thickness of the wood fiber layer.
２以下であることを特徴とする請求項１の複合板。2. The thickness of the wood fiber layer is 1 / th of the thickness of the wood chip layer.
2. The composite board according to claim 1, wherein the number is 2 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12531198A JPH10244515A (en) | 1998-04-20 | 1998-04-20 | Composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12531198A JPH10244515A (en) | 1998-04-20 | 1998-04-20 | Composite board |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16049096A Division JPH08332609A (en) | 1996-06-03 | 1996-06-03 | Composite board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10244515A true JPH10244515A (en) | 1998-09-14 |
Family
ID=14906975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12531198A Pending JPH10244515A (en) | 1998-04-20 | 1998-04-20 | Composite board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10244515A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110509367A (en) * | 2019-09-20 | 2019-11-29 | 尉氏县众林木业有限公司 | A kind of glued board tinuous production and its production technology |
| JP2021122970A (en) * | 2020-02-03 | 2021-08-30 | 株式会社齋藤製作所 | Manufacturing method of plywood, and woody furniture material |
-
1998
- 1998-04-20 JP JP12531198A patent/JPH10244515A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110509367A (en) * | 2019-09-20 | 2019-11-29 | 尉氏县众林木业有限公司 | A kind of glued board tinuous production and its production technology |
| CN110509367B (en) * | 2019-09-20 | 2023-12-12 | 尉氏县众林木业有限公司 | Continuous production line and production process of plywood |
| JP2021122970A (en) * | 2020-02-03 | 2021-08-30 | 株式会社齋藤製作所 | Manufacturing method of plywood, and woody furniture material |
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