JPH0720653B2 - Manufacturing method of surface-extruded thermoplastic resin - Google Patents
Manufacturing method of surface-extruded thermoplastic resinInfo
- Publication number
- JPH0720653B2 JPH0720653B2 JP62219787A JP21978787A JPH0720653B2 JP H0720653 B2 JPH0720653 B2 JP H0720653B2 JP 62219787 A JP62219787 A JP 62219787A JP 21978787 A JP21978787 A JP 21978787A JP H0720653 B2 JPH0720653 B2 JP H0720653B2
- Authority
- JP
- Japan
- Prior art keywords
- net
- wavy
- resin
- die
- molten resin
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は網状物を含有する新規な面状押出成形品、即ち
フィルム、シート、帯状体、リボン状体の製造法に関す
る。特に押出、流延によって生ずるシート状物の異方性
を網状物の挿入によって改善した成形品の好適な製造法
を提供することを目的とするものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing a novel sheet-shaped extruded product containing a reticulated material, that is, a film, a sheet, a strip, or a ribbon. In particular, it is an object of the present invention to provide a preferable method for producing a molded product in which the anisotropy of a sheet-like product caused by extrusion or casting is improved by inserting a net-like product.
一般にプラスチックスの補強、装飾などの目的で網をラ
ミネートすることが行われている。しかし、この場合は
２枚のプラスチックス板の間に網を挟んで熱プレスして
製造されており、その生産性は充分とは言えず、又物性
的にも一応の補強にはなっても、例えばプラスチックス
に短繊維を配合して押出成形する場合ほどの補強にはな
っていない。Generally, a net is laminated for the purpose of reinforcing plastics and decoration. However, in this case, the net is sandwiched between two plastics plates to perform hot pressing, and the productivity is not sufficient, and even if physical properties are tentatively reinforced, for example, It is not as reinforced as when extruding plastics with short fibers.
他方、短繊維を配合して押出成形し補強する場合、一般
的には押出成形時の流動により短繊維が押出成形の方向
に配向し方向性のある偏った補強が行われるに過ぎな
い。On the other hand, when short fibers are mixed and extruded for reinforcement, generally, the short fibers are oriented in the direction of the extrusion due to the flow at the time of extrusion, and only directional biased reinforcement is performed.
一方、熱可塑性樹脂は、一般に押出製膜時に押出、引取
方向への延伸配向を生じ、特に液晶性ポリマーと呼ばれ
る一群の結晶性ポリマーは成形時の配向性が強く、押出
方向に極端に強い配向が現われるのが常である。かかる
方向性を緩和するため、一般には充填材を添加するが充
分ではなく、その方向性を解消するに至らない。On the other hand, a thermoplastic resin generally causes extrusion orientation in the extrusion and film-drawing directions during extrusion film formation, and particularly a group of crystalline polymers called liquid crystalline polymers has a strong orientation during molding and an extremely strong orientation in the extrusion direction. Always appears. In order to alleviate such directionality, generally a filler is added, but this is not sufficient and the directionality cannot be eliminated.
本発明者等は面状押出成形により起こる方向性を相殺す
る様に、例えば液晶性ポリマーの持つ強い配向性を完全
に相殺或いは抑える様に任意に方向性を調節し得る網強
化熱可塑性樹脂製面状押出成形品の製造法を見出したも
のである。The present inventors have made a net-reinforced thermoplastic resin whose directionality can be arbitrarily adjusted so as to cancel out the directionality caused by the planar extrusion molding, for example, completely cancel or suppress the strong orientation of the liquid crystalline polymer. The present inventors have found a method for producing a sheet-shaped extrusion molded article.
本発明者は網状の補強材を使用することにより、補強材
の方向を任意に調節出来ること、並びに斯かる網入成形
品を得るには本発明の如き構成を採用するのが良いこと
に考え至り、本発明を完成した。The present inventor considers that the direction of the reinforcing material can be arbitrarily adjusted by using the net-like reinforcing material, and that it is better to adopt the constitution of the present invention in order to obtain such a net-inserted molded product. Thus, the present invention has been completed.
即ち本発明は、 夫々が波状の面を有する相対した二つのダイリップ3,
3′よりなり、その夫々の波状をなす湾曲部30,30′と突
出部31,31′が適当な距離を保って相対するよう組み合
わされたシート押出ダイ装置を使用し、このダイリップ
3,3′間に形成される蛇行流路14を網12が走行する間
に、先ず一方のダイリップ３′の波状突出部31′に付設
されたノズル13′より溶融樹脂を射出して網の一面から
他面へ貫通浸透させて付着させ、次いで相対した他方の
ダイリップ３の波状突出部31に付設されたノズル13より
溶融樹脂を射出して反対方向から網へ浸透付着させるこ
とを特徴とする網強化熱可塑性樹脂製面状押出成形品の
製造法、 及び 夫々が波状の面を有する相対した二つのダイリップ3,
3′よりなり、その夫々の波状をなす湾曲部30,30′と突
出部31,31′が適当な距離を保って相対するよう組み合
わされたシート押出ダイ装置を使用し、このダイリップ
3,3′間に形成される蛇行流路14を網12が走行する間
に、先ず一方のダイリップ３′の波状突出部31′に付設
されたノズル13′より溶融樹脂を射出して網の一面から
他面へ貫通浸透させて付着させ、次いで相対した他方の
ダイリップ３の波状突出部31に付設されたノズル13より
溶融樹脂を射出して反対方向から網へ浸透付着させ、更
にこの網を含有する樹脂を、その樹脂が未だ溶融又は軟
化状態にある間に更にもう一組の相対する波状の面が組
み合わされた金型4,4′の間の蛇行流路15を走行させ、
この間に二つの金型4,4′を相対的に上下、左右に動か
すことによって、網に含浸した溶融樹脂と網の密着性を
よくし、且つその関係位置を調整して網を樹脂層のほぼ
中央に埋設させることを特徴とする網強化熱可塑性樹脂
製面状押出成形品の製造法 に関するものである。That is, the present invention is directed to two opposing die lips 3, each having a wavy surface.
3 ', each of which uses a sheet extrusion die device in which curved portions 30 and 30' each having a wavy shape and protruding portions 31 and 31 'are assembled so as to face each other with an appropriate distance,
While the net 12 travels through the meandering flow path 14 formed between 3, 3 ', first, the molten resin is injected from the nozzle 13' attached to the wavy protrusion 31 'of the one die lip 3', and the net It is characterized in that it penetrates and penetrates from one surface to the other surface, and then it injects a molten resin from a nozzle 13 attached to the corrugated protrusion 31 of the other opposing die lip 3 and permeates and adheres to the net from the opposite direction. A method for producing a net-reinforced thermoplastic resin sheet extrudate, and two opposing die lips 3, each having a wavy surface,
3 ', each of which uses a sheet extruding die device in which curved portions 30, 30' each having a wavy shape and protruding portions 31, 31 'are assembled so as to face each other with an appropriate distance,
While the mesh 12 travels in the meandering flow path 14 formed between 3, 3 ', first, the molten resin is injected from the nozzle 13' attached to the wavy protrusion 31 'of the one die lip 3'to discharge the mesh. It penetrates and penetrates from one surface to the other surface, then it injects the molten resin from the nozzle 13 attached to the corrugated protrusion 31 of the opposite die lip 3 and penetrates and adheres to the net from the opposite direction. While containing the resin, while the resin is still in the molten or softened state, the serpentine flow path 15 between the molds 4 and 4 ′ in which another pair of opposing wavy surfaces are combined is run.
By moving the two molds 4 and 4'relatively up and down, and right and left during this period, the adhesion between the molten resin impregnated in the net and the net is improved, and the relative position is adjusted so that the net is formed in the resin layer. The present invention relates to a method for manufacturing a sheet-reinforced thermoplastic resin sheet extruded product, which is characterized in that it is embedded almost at the center.
本発明において使用する網の形態は任意であるが、一般
的に押出成形方向に補強材の配向が起こり易い事を考慮
すると、弱い方向即ち押出、流延方向と直角な方向を補
強することが肝要である。そのためには次の二つの態様
が代表的であると言える。The form of the net used in the present invention is arbitrary, but considering that the orientation of the reinforcing material is likely to occur in the extrusion molding direction, it is possible to reinforce the weak direction, that is, the extrusion, the direction perpendicular to the casting direction. It is essential. For that purpose, it can be said that the following two modes are typical.
即ち第１図の如く、網目が正方形で繊条が直交する網を
使用し、押出方向αに対して網が横方向βに引き延ばさ
れた形で繊条が斜めになるようにする場合、或いは第２
図の如く繊条は直交しているが縦横の繊条密度の異なっ
ている簾様の網を使用し、特に押出方向αの繊条密度が
大きい形（第２図について言えばｃ＜ｄ）にする場合が
代表的である。That is, as shown in FIG. 1, in the case where a mesh having a square mesh and orthogonal filaments is used, and the filament is slanted in a form in which the mesh is stretched in the lateral direction β with respect to the extrusion direction α Or the second
As shown in the figure, the filaments are orthogonal to each other, but use a net like a blind that has different filament densities in the vertical and horizontal directions, and the filament density is particularly large in the extrusion direction α (c <d in the case of Fig. 2). It is typical to
本発明に於いて或る方向の繊条密度とは、その方向の繊
条間距離の逆数（但し繊条間距離はmmで測定する事とす
る）によって定義される。例えば第２図の場合、押出方
向の網の繊条交点間距離をｃ、それと直角方向の距離ｄ
とすると、押出方向及び垂直方向の繊条密度は1/c、1/d
で定義される。また、第１図の如く繊条が斜めに横切る
場合（押出方向αと繊条のなす傾斜角をθとするtanθ
＝a/b）には網の繊条交点間の距離の押出方向に平行な
仮想線への投影長さをａ、垂直な方向のそれをｂとする
と、夫々の逆数が夫々の方向の繊条密度となり、第１図
の場合も第２図の場合も同一基準で作用効果を考える事
が出来る。In the present invention, the fiber density in a certain direction is defined by the reciprocal of the fiber distance in that direction (however, the fiber distance is measured in mm). For example, in the case of FIG. 2, the distance between the fiber filament intersections in the extrusion direction is c, and the distance d in the direction perpendicular thereto is d.
Then, the fiber density in the extrusion direction and the vertical direction is 1 / c, 1 / d
Is defined by In addition, when the filament crosses diagonally as shown in Fig. 1 (tan θ where the inclination angle formed by the extrusion direction α and the filament is θ
= A / b), let a be the projected length of the distance between the fiber filament intersections on the imaginary line parallel to the extrusion direction, and let b be the projected length in the vertical direction. Since the line density is obtained, the action and effect can be considered on the basis of the same criteria in both FIG. 1 and FIG.
本発明の面状押出成形品の製造法に使用するのに好まし
い装置は、第３図に断面略示図を示した如きシート押出
ダイ装置である。ここで重要な事は網と溶融樹脂との濡
れを良くする事、ボイドをなすく事、更に押し出された
フィルム、シートの中心部に網が埋設されるようにする
事である。その為、本発明者は第３図、第４図の様なシ
ート押出ダイ装置を工夫した。A preferred apparatus for use in the method of manufacturing the planar extrusion molded article of the present invention is a sheet extrusion die apparatus as shown in the schematic sectional view of FIG. What is important here is to improve the wetting of the net and the molten resin, to form a void, and to make the net embedded in the center of the extruded film or sheet. Therefore, the present inventor devised a sheet extrusion die device as shown in FIGS. 3 and 4.
第４図は第３図の押出口金部分の拡大図である。押出口
金は相対するダイリップ３とダイリップ３′とからな
り、ダイリップ３は押出成形機に固定されており、ダイ
リップ３′はｘ方向にスライド可能にしてある。即ち、
両者は波状の面を有して相対し、夫々の波状をなす湾曲
部30,30′と突出31,31′が適当な距離を保つ如くに構成
され、その間に形成される蛇行流路14のリップ幅を微調
整出来る構造となっている。FIG. 4 is an enlarged view of the extrusion die portion of FIG. The extrusion die comprises a die lip 3 and a die lip 3'which face each other. The die lip 3 is fixed to an extrusion molding machine, and the die lip 3'is slidable in the x direction. That is,
The two are opposed to each other with a wavy surface, and the wavy curved portions 30 and 30 'and the protrusions 31 and 31' are configured so as to maintain an appropriate distance, and the meandering flow path 14 formed therebetween is formed. It has a structure that allows fine adjustment of the lip width.
まず第３図に於い２段構えで充分脱気、減圧された部屋
9,10を通過する網12は、部屋10の加熱板11,11′の間を
通して充分加熱され後、ダイリップ３と３′とで形成さ
れた蛇行流路14に入る。第４図に於いて蛇行流路14を網
12が引っ張られて移動する間にダイリップ３′の波状突
出部31′に付設されたノズル13′から射出する溶融樹脂
を網12の一面から他面へ貫通浸透させて付着させ、次い
で反対側のダイリップ３の波状突出部31に付設されたノ
ズル13から射出する溶融樹脂を反対方向から網12へ貫通
浸透させて付着させる。このように蛇行流路14の中で溶
融樹脂の流れが蛇行する度に異なる方向から網を表裏貫
通する事により、ボイドを含まずに溶融樹脂と網の密着
を簡便且つ確実に遂行する事が出来る。この蛇行流路14
だけでも溶融樹脂で完全に接着した網入シートやフィル
ムができるが、網の両面の溶融樹脂の厚みは必ずしも均
一とはならない。First of all, as shown in Fig. 3, the room is fully degassed and decompressed with a two-stage
The net 12 passing through 9, 10 passes through between the heating plates 11, 11 'of the room 10 and is sufficiently heated, and then enters the meandering flow path 14 formed by the die lips 3 and 3'. In FIG. 4, the meandering flow path 14 is meshed.
While 12 is being pulled and moved, the molten resin injected from the nozzle 13 'attached to the wavy protrusion 31' of the die lip 3'is penetrated and penetrated from one surface of the net 12 to the other surface, and then on the opposite side. The molten resin injected from the nozzle 13 attached to the wavy protrusion 31 of the die lip 3 penetrates and penetrates the net 12 from the opposite direction to be attached. In this manner, by penetrating the mesh from the front and back from different directions each time the flow of the molten resin meanders in the meandering flow path 14, the molten resin and the mesh can be adhered easily and surely without containing voids. I can. This meandering channel 14
Although the net-filled sheet or film completely adhered by the molten resin can be obtained by itself, the thickness of the molten resin on both sides of the net is not necessarily uniform.
そこで、本発明者はこの両面の厚みの均一化を図るた
め、望ましくは、次の段階で更に別の蛇行流路15を通す
ことに考えに至った。即ち、次の工程で、更に別の波状
の対向する面を持った金型4,4′を設け、その内片方の
金型４はダイリップ３に密着しながらｘ方向に僅かにス
ライド出来、他方の金型４′はｘ方向に僅かにスライド
出来ると共にｙ方向にもスライド出来る構造にする。こ
れにより金型4,4′で形成される蛇行流路15の形状及び
その間隙も任意に変更させる事が出来る。この流路15に
より網に接着した溶融ないし軟化状の樹脂は、その密着
性を向上すると同時に、付着状態のむら、かたより等が
修正され、均等な形態に調整されて行くのである。即ち
この過程で網の両面の溶融樹脂の厚みは平均化され、埋
没された網は中心位置に来るようになる。流路15の形状
としては、例えば連続玉形状がある。この流路15を形成
する金型4,4′は適当な温度に保ち、樹脂が網に対して
その形態を調整しうる様な溶融ないし軟化状態を保つこ
とが必要である。両金型4,4′の間隙を通過したボイド
のない溶融樹脂に埋没された網16は第３図に示す様に表
面仕上げ、残留ボイドの駆逐を兼ねてロール5,5′で全
体の厚みが調整され、中間ロール6,7,8を経て巻き取ら
れる。更に第５図の如く網を多層にする場合は、第５図
の如く押出口金17,17′を複数個配置し、夫々の押出物1
8,18′を合わせてロール5,5′で圧着すれば良い。厚手
の多層網強化シートの場合は7,8を経ないで裁断工程に
まわされる事もある。Therefore, in order to make the thicknesses of both surfaces uniform, the present inventor has come to the idea of passing another meandering flow path 15 in the next step. That is, in the next step, further dies 4, 4'having wavy and opposite faces are provided, and one of the dies 4 can be slightly slid in the x direction while closely contacting the die lip 3, The mold 4'is constructed so that it can slide slightly in the x direction and also in the y direction. As a result, the shape of the meandering flow path 15 formed by the molds 4 and 4'and the gap therebetween can be arbitrarily changed. The molten or softened resin adhered to the net by the flow path 15 improves its adhesiveness, and at the same time, the unevenness of the adhered state, the bending, etc. are corrected and the resin is adjusted to a uniform form. That is, in this process, the thickness of the molten resin on both sides of the net is averaged, and the buried net comes to the center position. The flow path 15 has a continuous ball shape, for example. It is necessary that the molds 4 and 4'that form the flow path 15 are maintained at an appropriate temperature and the resin is maintained in a molten or softened state capable of adjusting its shape with respect to the net. The net 16 buried in the void-free molten resin that has passed through the gap between the two molds 4 and 4'is surface-finished as shown in Fig. 3 and the total thickness of the rolls 5 and 5'is used to eliminate residual voids. Is adjusted and wound up via intermediate rolls 6, 7, and 8. Further, when the net is to be multi-layered as shown in FIG. 5, a plurality of extrusion caps 17 and 17 'are arranged as shown in FIG.
It is sufficient to combine 8,18 'and crimp with rolls 5,5'. In the case of a thick multi-layer mesh reinforced sheet, it may be passed to the cutting step without going through step 7.
更に網として第１図のようなものを使用した場合には、
１種類の網を用意して置くだけで押出成形機への供給時
に予めいずれかの方向に引っ張って網目を変形させて最
終押出成形品の方向性を調節出来る利点もある。勿論、
押出後延伸或いはロール圧延することもできる。その時
には樹脂が変形し配向するが、網目も幾何学的にその変
形に追随できるために、網自身に機械的な無理がかから
ず、網の破損や網と樹脂との間での剥離も起こりにくい
という特徴を有する事にもなる。Furthermore, when using a network as shown in Fig. 1,
There is also an advantage that the directionality of the final extruded product can be adjusted by preliminarily pulling it in any direction and deforming the net when it is supplied to the extruder by simply preparing and placing one kind of net. Of course,
Stretching or roll rolling can also be performed after extrusion. At that time, the resin deforms and orients, but the mesh can geometrically follow the deformation, so that the mesh itself is not mechanically impaired, and the net is not damaged or peeled between the resin and the net. It also has the characteristic of being unlikely to occur.
本発明に於いて使用する網の材質は通常プラスチックス
の補強に使用されるガラス繊維、炭素繊維、芳香族ポリ
エステル繊維、液晶性ポリマー繊維、芳香族ポリアミ
ド、ポリイミド繊維の如き耐熱性高強度合成繊維、或い
は極細ステンレスワイヤー等の金属線等が好ましい。有
機質繊維の場合には、使用樹脂溶融下でも繊維形態を保
ち、充分な強度を有することが必要である。また必要に
応じて縦横の材質、太さを変えても良い。網目は前述の
如く必ずしも縦横の繊条密度及び種類が等しい必要はな
いが、繊条が直交した平織の簡単な網目のもので良い。
繊条の交叉部分で結ばれている必要もない。繊条密度は
第１図、第２図の定義で、1/a,1/b,1/c,1/d（単位1/m
m）ともに0.2〜４の範囲が望ましく、第１図の押出方向
に対して傾斜角θは５゜〜85゜の範囲が望ましい。特に
力学的異方性を消去したい場合には網強化しない押出成
形品の押出方向と垂直方向との強度の比が1/aと1/bとの
比或いは1/cと1/dとの比と同じになるのが良い。また繊
条密度の絶対値は網の樹脂に対する体積含有率が５〜30
％になるのが良い。繊条は単繊維でもよく、数本から数
百本の繊維が引き揃えられたもの、或いは撚り合わされ
たものでも良い。押出成形品での網の強度向上率を考え
ると、繊条の太さは0.3mm〜1mm程度のものを使用する
が、0.05〜0.2mmの範囲が特に望ましい。これらの繊維
はプラスチックスの補強材として使用する場合の様に表
面処理したものを使用することができ、又網を製造する
場合に必要なサイジング剤、収束剤を付着させることも
できる。The material of the mesh used in the present invention is heat-resistant and high-strength synthetic fiber such as glass fiber, carbon fiber, aromatic polyester fiber, liquid crystalline polymer fiber, aromatic polyamide and polyimide fiber which are usually used for reinforcing plastics. Alternatively, a metal wire such as an ultrafine stainless wire is preferable. In the case of organic fibers, it is necessary to maintain the fiber form even when the resin used is melted and to have sufficient strength. Further, the vertical and horizontal materials and thickness may be changed as required. As described above, the mesh does not necessarily have to have the same density and kind of filaments in the length and width, but a simple mesh of plain weave in which the filaments are orthogonal to each other may be used.
It does not have to be tied at the intersection of the filaments. The fiber density is 1 / a, 1 / b, 1 / c, 1 / d (unit: 1 / m, as defined in Figures 1 and 2).
m) is preferably in the range of 0.2 to 4, and the inclination angle θ is preferably in the range of 5 ° to 85 ° with respect to the extrusion direction in FIG. Especially when it is desired to eliminate the mechanical anisotropy, the ratio of the strength in the extrusion direction and the vertical direction of the extruded product without net reinforcement is 1 / a and 1 / b or 1 / c and 1 / d. It should be the same as the ratio. The absolute value of the fiber density is 5-30 volume content of the net resin.
It is good to be%. The filament may be a single fiber, or may have several to several hundred fibers aligned or twisted. Considering the rate of improvement of the strength of the net in the extruded product, the thickness of the filament is about 0.3 mm to 1 mm, but the range of 0.05 to 0.2 mm is particularly desirable. These fibers may be surface-treated as in the case of being used as a reinforcing material for plastics, and may be attached with a sizing agent and a sizing agent necessary for producing a net.
本発明に使用する樹脂は熱可塑性樹脂ならば何れにても
よく、これを補強することができる。The resin used in the present invention may be any thermoplastic resin and can be reinforced.
熱可塑性樹脂の例を示すと、ポリエチレン、ポリプロピ
レン等のポリオレフィン、ポリエチレンテレフタレー
ト、ポリブチレンテレフタレート等の芳香族ジカルボン
酸とジオール或いはオキシカルボン酸等からなる芳香族
ポリエステル、ポリアセタール（ホモ又はコポリマ
ー）、ポリスチレン、ポリ塩化ビニル、ポリアミド、ポ
リカーボネート、ABS、ポリフェニレンオキシド、ポリ
フェニレンスルフィド、フッ素樹脂等を挙げることがで
きる。本発明はそれ自身の配向性が強く特に押出成形の
如くそれが極端に発現する液晶性ポリマーに適用すると
極めて効果的である。Examples of thermoplastic resins include polyethylene, polyolefins such as polypropylene, polyethylene terephthalate, aromatic polyesters such as polybutylene terephthalate and aromatic dicarboxylic acids and diols or oxycarboxylic acids, polyacetals (homo or copolymers), polystyrene, Examples thereof include polyvinyl chloride, polyamide, polycarbonate, ABS, polyphenylene oxide, polyphenylene sulfide, and fluororesin. The present invention is extremely effective when applied to a liquid crystalline polymer in which the orientation itself is strong, and particularly when it is extremely exhibited, such as in extrusion molding.
又、一般に押出、流延中に生じる強度等の物性の方向に
よる差をなくし、特に弱い方向への補強を重点的に行
い、異方性をなくしたフィルムやシートの調製に好適で
ある。Further, it is suitable for the preparation of a film or sheet in which the anisotropy is eliminated by eliminating the difference in the physical properties such as the strength generated during extrusion and casting in general, and by focusing the reinforcement in the weak direction.
本発明に於いて使用する樹脂は、その目的に応じ従来一
般に使用されている短繊維状、板状、粉状、粒状の充填
剤や、安定剤等を添加したものであっても勿論可能であ
る。The resin used in the present invention may, of course, be the one to which a short fiber-like, plate-like, powder-like, or granular filler, which has been generally used conventionally according to the purpose, or a stabilizer is added. is there.
本発明には次のような効果がある。 The present invention has the following effects.
まず、減圧下の蛇行流路の中で蛇行するたびに溶融樹脂
が異なる方向から網を表裏貫通させることになるので、
溶融樹脂と網の間にボイドを含まず、簡便且つ確実に密
着性の良い網入のフィルム、シートを作成することがで
きる。First, because the molten resin penetrates the net from the front and back from different directions each time it meanders in the meandering flow path under reduced pressure,
It is possible to easily and surely form a mesh-filled film or sheet that does not contain a void between the molten resin and the mesh and has good adhesion.
次に、この網入樹脂は第２の工程で波状金型の間を通
り、その片方を他方に対して相対的にずらすという工夫
により、その通路が第４図に示すように、連続玉形状か
ら蛇行形状まで任意に設定できる。これにより、溶融樹
脂の流れ速度に緩急を与えると共に網の両側で溶融樹脂
と金型の間の剪断応力に差を与えることになるので、こ
の金型間の通路の過程で網の両面の溶融樹脂の厚みは剪
断応力のバランスをとるように平均化され、その出口で
は埋没された網は自動的に中心位置にくるようになる。Next, this networked resin passes between the corrugated metal molds in the second step, and one of the channels is shifted relative to the other, so that the passage has a continuous ball shape as shown in FIG. It can be set arbitrarily from to meandering shape. As a result, the flow velocity of the molten resin is moderated and the shear stress between the molten resin and the mold on both sides of the net is different. The thickness of the resin is averaged to balance the shear stress, and at the exit the buried net is automatically centered.
また、押出方向に対して網目構造が菱形になっていれば
その方向及び垂直方向に変形自在となるため二つの利点
が生じる。その第１は、１種類の網を用意して置くだけ
で押出成形機への供給時に予め何れかの方向に引っ張っ
て網目を変形させて最終押出成形品の方向性を調整する
ことができることである。その第２は、押出後の延伸或
いはロール圧延の工程で、樹脂も変形配向するが、網目
も幾何学的にその変形に追随できるために網自身に機械
的な無理がかからず、網の破損や網と樹脂との間での剥
離も起こりにくいということである。Further, if the mesh structure is rhombic with respect to the extrusion direction, it can be deformed in that direction and in the vertical direction, so that two advantages occur. First, it is possible to adjust the directionality of the final extruded product by preliminarily pulling it in any direction and deforming the net when it is supplied to the extruder by simply preparing and placing one kind of net. is there. The second is the process of stretching or roll rolling after extrusion, in which the resin is also deformed and oriented, but since the mesh can follow the deformation geometrically, the mesh itself is not mechanically unreasonable. It means that breakage and peeling between the net and the resin are unlikely to occur.
本発明は以上の通りの効果があり、網の縦横方向の繊条
密度の選択により補強材の方向性を任意に調節できる。
従って一般のプラスチックスに適用しても勿論押出成形
品の力学的強度の向上と共に方向性をも解消できるが、
液晶性ポリマーの如き異方性を生じやすい樹脂に適用す
ればその押出成形品の最大の欠点である異方性を解消で
き、液晶性ポリマーの持つ高強度特性が異方性の減少に
より最大限に発揮され、面状押出成形品が持つ欠点、例
えば押出方向に直角方向への引き裂き強度が弱い点が解
消される。The present invention has the effects as described above, and the directionality of the reinforcing material can be arbitrarily adjusted by selecting the filament density in the longitudinal and lateral directions of the net.
Therefore, even if it is applied to general plastics, it is of course possible to improve the mechanical strength of the extruded product and eliminate the directionality,
When applied to a resin that easily causes anisotropy, such as a liquid crystalline polymer, the anisotropy, which is the biggest drawback of the extruded product, can be eliminated, and the high strength properties of the liquid crystalline polymer can be maximized by reducing the anisotropy. Thus, the drawbacks of the planar extrusion-molded article, for example, the point that the tear strength in the direction perpendicular to the extrusion direction is weak, are eliminated.
以下実施例により本発明を更に詳しく説明する。 Hereinafter, the present invention will be described in more detail with reference to Examples.
以下の実施例は樹脂として液晶性ポリエステルを使用し
た場合を主として挙げたが、押出成形時の配向性の小さ
い他のプラスチックスの場合（実施例11）にも言うまで
もなく適用できる。In the following examples, the case where liquid crystalline polyester was used as a resin was mainly mentioned, but it is needless to say that it can be applied to the case of other plastics having a small orientation during extrusion molding (Example 11).
実施例 １〜５ 後述する液晶性ポリエステルレジンA,B,C,D,Eを使用し
て、第１図の目の粗い網、即ち縦糸、横糸共に直径13μ
ｍのガラス繊維100本からなる合撚糸を使用し縦糸の間
隔、横糸の間隔共に1mmの繊維が直交した網を幅方向に
引き伸ばしながらダイ幅300mmの第３図の口金を使用し
て押出ラミネートして、網目が幅方向に伸び、糸の間隔
が第１図でａ＝3.4mm、ｂ＝1mmの網がほぼ中心部に埋設
された厚み0.5mmのシートを得た。Examples 1 to 5 Using liquid crystalline polyester resins A, B, C, D and E described later, coarse mesh of FIG. 1, that is, both warp and weft yarns have a diameter of 13 μm.
Using a twisted and twisted yarn consisting of 100 m of glass fibers, both of the warp and weft intervals are 1 mm, and the mesh is stretched in the width direction while the mesh is stretched in the width direction and extrusion laminated using the die with a die width of 300 mm shown in FIG. As a result, a sheet having a thickness of 0.5 mm was obtained in which the mesh was extended in the width direction and the mesh having the yarn intervals of a = 3.4 mm and b = 1 mm in FIG.
これらの強度は第１表に示した。These strengths are shown in Table 1.
実施例 ６〜10 レジンA,B,C,D,Eを使用して第２図の簾状の網、即ち縦
糸、横糸共に直径13μｍのガラス繊維100本からなる合
撚糸を使用し縦糸の間隔1mm、横糸の間隔0.5mmの繊維が
直交した網に第３図の口金を使用して押出ラミネートし
て、ほぼ中心部に埋設された厚み0.5mmのシートを得
た。Examples 6 to 10 Using the resins A, B, C, D and E, the blind net of FIG. 2, that is, the warp yarn and the weft yarn are both twisted yarns made of 100 glass fibers having a diameter of 13 μm Extrusion lamination was carried out using a spinneret shown in FIG. 3 on a net in which fibers having a width of 1 mm and a space between wefts of 0.5 mm were orthogonal to each other to obtain a sheet having a thickness of 0.5 mm embedded almost in the center.
これらの強度は第１表に示した。These strengths are shown in Table 1.
実施例 11 ポリブチレンテレフタレート（PBT、ポリプラスチック
ス社製）を使用して実施例６〜10と同じ方法で厚み0.5m
mのシートを得た。Example 11 Polybutylene terephthalate (PBT, manufactured by Polyplastics Co., Ltd.) was used in the same manner as in Examples 6 to 10 to obtain a thickness of 0.5 m.
Got m sheets.
これらの強度は第１表に示した。These strengths are shown in Table 1.
比較例 １ レジンＡを使用して補強材を配合せず同様の条件で押出
成形して厚み0.5mmのシートを得た。その強度を第１表
に示した。Comparative Example 1 A sheet having a thickness of 0.5 mm was obtained by using Resin A and extruding under the same conditions without adding a reinforcing material. The strength is shown in Table 1.
比較例 ２ レジンＡを使用して補強材としてガラス短繊維（平均繊
維長4.7mm、直径13μｍ）を配合して同様の条件で押出
成形し厚み0.5mmのシートを得た。その強度を第１表に
示した。Comparative Example 2 Using resin A, short glass fibers (average fiber length 4.7 mm, diameter 13 μm) were mixed as a reinforcing material, and extrusion molding was performed under the same conditions to obtain a sheet having a thickness of 0.5 mm. The strength is shown in Table 1.
比較例 ３、４ PBTを使用して、比較例１、２に各々対応した方法でシ
ートを得た。その強度を第１表に示した。Comparative Examples 3 and 4 Using PBT, sheets were obtained by the methods corresponding to Comparative Examples 1 and 2, respectively. The strength is shown in Table 1.
尚、実施例で使用したレジンＡ〜Ｅは下記の構成単位を
有するものである。 The resins A to E used in the examples have the following constitutional units.
第１図は本発明に用いられる網の一例を示す部分平面
図、 第２図は本発明に用いられる網の別の一例を示す部分平
面図、 第３図は本発明方法に使用する装置の一例を示す断面略
示図、 第４図は第３図の押出口金部分の拡大図、 第５図は本発明の面状押出成形品を製造するための装置
の別の一例を示す断面略示図である。 3,3′……ダイリップ 4,4′……金型 12……網 13,13′……ノズル 14,15……流路 30,30′……湾曲部 31,31′……突出部FIG. 1 is a partial plan view showing an example of a network used in the present invention, FIG. 2 is a partial plan view showing another example of a network used in the present invention, and FIG. 3 is an apparatus used in the method of the present invention. Fig. 4 is a schematic cross-sectional view showing an example, Fig. 4 is an enlarged view of the extrusion die portion of Fig. 3, and Fig. 5 is a schematic cross-sectional view showing another example of the apparatus for producing the planar extrusion-molded article of the present invention. FIG. 3,3 ′ …… Die lip 4,4 ′ …… Mold 12 …… Mesh 13,13 ′ …… Nozzle 14,15 …… Flow path 30,30 ′ …… Curved part 31,31 ′ …… Projected part
Claims (2)
イリップ（3,3′）よりなり、その夫々の波状をなす湾
曲部（30,30′）と突出部（31,31′）が適当な距離を保
って相対するよう組み合わされたシート押出ダイ装置を
使用し、このダイリップ（3,3′）間に形成される蛇行
流路（14）を網（12）が走行する間に、先ず一方のダイ
リップ（３′）の波状突出部（31′）に付設されたノズ
ル（13′）より溶融樹脂を射出して網の一面から他面へ
貫通浸透させて付着させ、次いで相対した他方のダイリ
ップ（３）の波状突出部（31）に付設されたノズル（1
3）より溶融樹脂を射出して反対方向から網へ浸透付着
させることを特徴とする網強化熱可塑性樹脂製面状押出
成形品の製造法。1. Comprising two opposing die lips (3, 3 ') each having a wavy surface, each of which has a wavy curved portion (30, 30') and a protruding portion (31, 31 '). Using a sheet extrusion die device combined so as to face each other while keeping an appropriate distance, while the mesh (12) runs through the meandering flow path (14) formed between the die lips (3, 3 '), First, a molten resin is injected from a nozzle (13 ') attached to the wavy protrusion (31') of one die lip (3 ') to penetrate and permeate from one surface of the net to the other surface, and then the other opposite Nozzle (1) attached to the wavy protrusion (31) of the die lip (3)
3) A method for producing a sheet-shaped extruded product made of a net-reinforced thermoplastic resin, characterized by injecting a molten resin and allowing it to permeate and adhere to the net from the opposite direction.
イリップ（3,3′）よりなり、その夫々の波状をなす湾
曲部（30,30′）と突出部（31,31′）が適当な距離を保
って相対するよう組み合わされたシート押出ダイ装置を
使用し、このダイリップ（3,3′）間に形成される蛇行
流路（14）を網（12）が走行する間に、先ず一方のダイ
リップ（３′）の波状突出部（31′）に付設されたノズ
ル（13′）より溶融樹脂を射出して網の一面から他面へ
貫通浸透させて付着させ、次いで相対した他方のダイリ
ップ（３）の波状突出部（31）に付設されたノズル（1
3）より溶融樹脂を射出して反対方向から網へ浸透付着
させ、更にこの網を含有する樹脂を、その樹脂が未だ溶
融又は軟化状態にある間に更にもう一組の相対する波状
の面が組み合わされた金型（4,4′）の間の蛇行流路（1
5）を走行させ、この間に二つの金型（4,4′）を相対的
に上下、左右に動かすことによって、網に含浸した溶融
樹脂と網の密着性をよくし、且つその関係位置を調整し
て網を樹脂層のほぼ中央に埋設させることを特徴とする
網強化熱可塑性樹脂製面状押出成形品の製造法。2. Comprising two opposing die lips (3,3 ') each having a wavy surface, each of which has a wavy curved portion (30,30') and a protruding portion (31,31 '). Using a sheet extrusion die device combined so as to face each other while keeping an appropriate distance, while the mesh (12) runs through the meandering flow path (14) formed between the die lips (3, 3 '), First, a molten resin is injected from a nozzle (13 ') attached to the wavy protrusion (31') of one die lip (3 ') to penetrate and permeate from one surface of the net to the other surface, and then the other opposite Nozzle (1) attached to the wavy protrusion (31) of the die lip (3)
3) the molten resin is injected from the opposite direction to permeate and adhere to the net from the opposite direction, and while the resin containing this net is still in the molten or softened state, another set of opposite wavy surfaces is formed. A serpentine flow path (1) between the combined molds (4,4 ')
5) is run, and the two molds (4, 4 ') are moved up and down, left and right relatively in the meantime to improve the adhesiveness between the molten resin impregnated in the net and the net, and the related position. A method for producing a net-reinforced thermoplastic resin sheet extruded product, which comprises adjusting and embedding a net in substantially the center of a resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62219787A JPH0720653B2 (en) | 1987-09-02 | 1987-09-02 | Manufacturing method of surface-extruded thermoplastic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62219787A JPH0720653B2 (en) | 1987-09-02 | 1987-09-02 | Manufacturing method of surface-extruded thermoplastic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6463124A JPS6463124A (en) | 1989-03-09 |
| JPH0720653B2 true JPH0720653B2 (en) | 1995-03-08 |
Family
ID=16741008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62219787A Expired - Fee Related JPH0720653B2 (en) | 1987-09-02 | 1987-09-02 | Manufacturing method of surface-extruded thermoplastic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720653B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115998471B (en) * | 2023-02-08 | 2024-08-20 | 山东大学 | Clamping preformed gum cuff sealing cap and use method thereof |
-
1987
- 1987-09-02 JP JP62219787A patent/JPH0720653B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6463124A (en) | 1989-03-09 |
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