JPH06287319A - Production of fibrous composite sheet - Google Patents
Production of fibrous composite sheetInfo
- Publication number
- JPH06287319A JPH06287319A JP7576193A JP7576193A JPH06287319A JP H06287319 A JPH06287319 A JP H06287319A JP 7576193 A JP7576193 A JP 7576193A JP 7576193 A JP7576193 A JP 7576193A JP H06287319 A JPH06287319 A JP H06287319A
- Authority
- JP
- Japan
- Prior art keywords
- width
- resin powder
- reinforcing fiber
- fiber
- reinforcing
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチックやエンジ
ニアリングプラスチックの補強材料として用いられるプ
レプリグシートや、スタンパブルシート等の繊維複合シ
ートの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fiber composite sheet such as a prepreg sheet or a stampable sheet used as a reinforcing material for plastics and engineering plastics.
【０００２】[0002]
【従来の技術】従来、繊維強化熱可塑性樹脂シートの製
造方法としては、例えば、特公昭５２─３９８５号公報
に記載の如く、粉体状熱可塑性物質の床中を通過中に、
螺条を設けたバーを通すことによりロービングを複数の
モノフィラメントよりなる個々の束に分離し、粉体状熱
可塑性物質をロービング中に侵入させ、引き続きロービ
ングを熱可塑性物質の融点以上の温度まで加熱し、加熱
ロービングをダイを通してから冷却してシート化する方
法や、特公昭６３─６７４４６号公報に記載の如く、平
行且つ均一に緊張された複数の繊維を樹脂粒子の入った
槽を複数のローラを経て通過させる際に、繊維に樹脂粒
子を付着させ、過剰の付着樹脂を繊維に振動を与えるこ
とにより取り除いた後、加熱溶融してシート化する方法
が提案されている。2. Description of the Related Art Conventionally, as a method for producing a fiber-reinforced thermoplastic resin sheet, for example, as described in JP-B-52-3985, while passing through a bed of a powdery thermoplastic material,
The roving is separated into individual bundles consisting of multiple monofilaments by passing through a bar provided with threads, and the powdery thermoplastic substance is allowed to enter the roving, and then the roving is heated to a temperature above the melting point of the thermoplastic substance. As described in JP-B-63-67446, a heating roving is passed through a die and cooled to form a sheet, and a plurality of parallelly and evenly tensioned fibers are filled with resin particles in a plurality of rollers. There is proposed a method in which resin particles are adhered to the fiber when passing through the resin, excess resin is removed by applying vibration to the fiber, and then the resin is heated and melted to form a sheet.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前者の場合に
は、粉体状熱可塑性物質をロービング中に侵入させた
後、加熱部に移送するまでの間に、粉体状熱可塑性物質
が落下し易く、又、ロービングのモノフイラメントより
なる個々の束に分離した幅がまちまちになり易く、幅方
向に肉厚が不揃いなシートしか得ることができないとい
う問題点がある。However, in the former case, the powdery thermoplastic substance drops during the period from the time when the powdery thermoplastic substance is infiltrated into the roving and before it is transferred to the heating section. In addition, there is a problem in that the widths of the individual bundles of roving monofilament are likely to have different widths, and only sheets having an uneven thickness in the width direction can be obtained.
【０００４】又、後者の場合には、過剰の付着樹脂を繊
維に振動を与えることにより取り除くことにより、又、
取り除いた後加熱溶融成形部に移送するまでの間に、粉
体熱可塑性樹脂が必要以上に落下して繊維の幅方向に付
着樹脂の不足する部分が発生し易く、幅方向に肉厚が均
一なシートを得ることが難しいという問題点がある。In the latter case, the excess adhered resin is removed by applying vibration to the fiber,
Between the removal and transfer to the heat-melt molding section, the powdered thermoplastic resin drops more than necessary and the area where the adhered resin is insufficient in the width direction of the fiber easily occurs, and the thickness is uniform in the width direction. There is a problem that it is difficult to obtain a good sheet.
【０００５】本発明は上記の如き従来の問題点を解消
し、幅方向に肉厚が均一で、外観及び強度に優れた繊維
複合シートの製造方法を提供することを目的としてなさ
れたものである。The present invention has been made for the purpose of solving the above-mentioned conventional problems and providing a method for producing a fiber composite sheet having a uniform thickness in the width direction and excellent in appearance and strength. .
【０００６】[0006]
【課題を解決するための手段】本発明においては、多数
の連続モノフィラメントよりなる強化繊維束を、樹脂粉
体が充填された流動槽内にて、流動槽内に設けられ、強
化繊維束中のモノフィラメントを隙間なく並列させたと
きの繊維幅の５０〜１００％の幅を有するバーに押圧状
態にて摺動させて、強化繊維束をモノフィラメント状に
開繊させつつ強化繊維に樹脂粉体を付着させる工程を有
する。SUMMARY OF THE INVENTION In the present invention, a reinforcing fiber bundle composed of a large number of continuous monofilaments is provided in a fluid tank filled with a resin powder, and the reinforcing fiber bundle The resin powder is attached to the reinforcing fiber while opening the reinforcing fiber bundle into a monofilament by sliding it under pressure with a bar having a width of 50 to 100% of the fiber width when the monofilaments are arranged side by side without a gap. There is a step of
【０００７】この工程を経ることにより、バーの擦り揉
み等によって、隣接する強化繊維束をモノフィラメント
状に充分且つ均一に開繊させつつ、強化繊維のモノフィ
ラメント間に樹脂粉体を侵入させるようにして、強化繊
維に幅方向に厚さが均一になるように樹脂粉体を付着さ
せることができる。Through this process, the adjacent reinforcing fiber bundles are sufficiently and uniformly opened into monofilament-like fibers by rubbing and rubbing the bar, and the resin powder is allowed to penetrate between the monofilaments of the reinforcing fibers. The resin powder can be attached to the reinforcing fiber so that the thickness becomes uniform in the width direction.
【０００８】強化繊維束（ロービング）としては、樹脂
粉体の溶融温度において熱的に安定なものが好適に使用
され、例えば、ガラス繊維、カーボン繊維、セラミック
繊維等の無機繊維、ポリアミド繊維、ポリエステル繊維
等の有機繊維等が挙げられる。As the reinforcing fiber bundle (roving), one that is thermally stable at the melting temperature of the resin powder is preferably used. For example, inorganic fibers such as glass fiber, carbon fiber, ceramic fiber, polyamide fiber, polyester and the like. Examples include organic fibers such as fibers.
【０００９】強化繊維束は、モノフィラメントの集合を
通常ポリ酢酸ビニル、デンプン、ポリエステル等の収束
剤により結束して繊維束とされるが、強化繊維に樹脂粉
体を均一に付着させるためには、モノフィラメント状へ
の開繊が容易である必要があり、収束剤は少量の方がよ
く、その量は通常０．１〜５％が好ましい。The reinforcing fiber bundle is usually formed by binding a group of monofilaments with a sizing agent such as polyvinyl acetate, starch or polyester to form a fiber bundle. In order to uniformly attach the resin powder to the reinforcing fiber, It is necessary to easily open the fiber into a monofilament, and a smaller amount of the sizing agent is better, and the amount is usually preferably 0.1 to 5%.
【００１０】強化繊維のモノフィラメントの直径は、１
〜５０μｍが好ましく、２〜３０μｍが特に好ましい。
直径が１μｍ未満の場合には、加熱溶融工程までの引き
取りや振動で生じる張力に耐え得る強度が得られず、
又、得られる繊維複合シートの強度が充分でなく、逆
に、５０μｍを超える場合には、流動槽中で樹脂粉体を
付着させるのに充分な開繊状態とすることができず、付
着不足となり、繊維複合シートとして要求される強度を
得ることが難しくなる傾向がある。The diameter of the monofilament of the reinforcing fiber is 1
˜50 μm is preferable, and 2˜30 μm is particularly preferable.
If the diameter is less than 1 μm, the strength that can withstand the tension generated by the take-up and vibration up to the heating and melting step cannot be obtained,
Further, when the strength of the obtained fiber composite sheet is not sufficient and, conversely, when it exceeds 50 μm, the fiber cannot be sufficiently opened for adhering the resin powder in the fluidized tank, resulting in insufficient adhesion. Therefore, it tends to be difficult to obtain the strength required for the fiber composite sheet.
【００１１】樹脂粉体としては、例えば、ポリエチレ
ン、ポリプロピレン等のオレフィン樹脂、塩化ビニル樹
脂、アクリル樹脂、ポリスチレン及びスチレンと他の単
量体との共重合体、ポリエーテルサルフォン、ポリフェ
ニレンサルファイド等のエンジニアリングプラスチッ
ク、これらの熱可塑性樹脂の混合樹脂、熱硬化性樹脂と
の混合樹脂からなる粉体が挙げられる。Examples of the resin powder include olefin resins such as polyethylene and polypropylene, vinyl chloride resins, acrylic resins, polystyrene and copolymers of styrene and other monomers, polyether sulfone, polyphenylene sulfide and the like. Examples of the powder include engineering plastic, a mixed resin of these thermoplastic resins, and a mixed resin with a thermosetting resin.
【００１２】樹脂粉体の粒子径は、１０〜３００μｍが
好ましい。粒子径が、１０μｍ未満の場合には、流動槽
内で流動状態にすると樹脂粉体の飛散が激しくなって、
流動状態の調節が難しくなり、逆に、３００μｍを超え
る場合には、モノフィラメントが樹脂粉体の粒子径以上
に開繊しにくくなり、又、流動槽内での流動状態も悪く
なるため、モノフィラメント間へ樹脂粉体を侵入させる
ような強化繊維への樹脂粉体の付着状態が悪くなる傾向
がある。The particle size of the resin powder is preferably 10 to 300 μm. If the particle size is less than 10 μm, the resin powder becomes more scattered when placed in a fluidized state in a fluidized tank.
It becomes difficult to control the flow state, and conversely, when it exceeds 300 μm, it becomes difficult to open the monofilament more than the particle size of the resin powder, and the flow state in the flow tank also deteriorates. There is a tendency that the adhesion state of the resin powder to the reinforcing fibers that causes the resin powder to infiltrate becomes poor.
【００１３】流動槽内にて樹脂粉体を流動状態にする方
法としては、樹脂粉体を充填した流動槽の底面より流動
ガスを吹き上げる方法や、流動槽の底面部を振動させる
方法等が挙げられる。尚、流動ガスとしては、空気、窒
素ガス等の中性ガスが望ましい。As a method for making the resin powder in a fluidized state in the fluidized tank, there are a method of blowing a flowing gas from the bottom of the fluidized tank filled with the resin powder, a method of vibrating the bottom of the fluidized tank, and the like. To be The flowing gas is preferably a neutral gas such as air or nitrogen gas.
【００１４】強化繊維束を流動槽内でバーに押圧状態に
て摺動させる際の強化繊維のバーに対する押圧力として
は、強化繊維のモノフィラメントの直径により最適値は
異なるが、０．１〜５ｋｇｆ／ｃｍが好ましい。押圧力
が０．１ｋｇｆ／ｃｍ未満の場合には、強化繊維束が開
繊しにくく、逆に、５ｋｇｆ／ｃｍを超える場合には、
強化繊維が加熱溶融工程までの引き取りや振動に耐える
ことができず破断するおそれがある。As for the pressing force of the reinforcing fiber against the bar when the reinforcing fiber bundle is slid on the bar in the fluidized tank, the optimum value varies depending on the diameter of the monofilament of the reinforcing fiber, but is 0.1 to 5 kgf. / Cm is preferred. When the pressing force is less than 0.1 kgf / cm, the reinforcing fiber bundle is difficult to open, and conversely, when it exceeds 5 kgf / cm,
The reinforcing fiber may not be able to withstand the vibration and vibration until the heating and melting step and may be broken.
【００１５】上記押圧力を付与するには強化繊維束にテ
ンションをかけるのが好ましく、一般に０．５〜３ｋｇ
ｆ／本のテンションをかければよい。In order to apply the above pressing force, it is preferable to apply a tension to the reinforcing fiber bundle, and generally 0.5 to 3 kg.
You only need to apply the tension of f / book.
【００１６】流動槽内に設けられるバーは、強化繊維束
中のモノフィラメントを隙間なく並列させたときの繊維
幅の５０〜１００％の幅を有する必要がある。ここに、
バーの幅とは、強化繊維束が押圧状態にて摺動可能な実
際の有効幅のことをいう。The bar provided in the fluidized tank must have a width of 50 to 100% of the fiber width when the monofilaments in the reinforcing fiber bundle are juxtaposed in parallel. here,
The width of the bar means the actual effective width with which the reinforcing fiber bundle can slide in the pressed state.
【００１７】バーの幅が強化繊維束中のモノフィラメン
トを隙間なく並列させたときの繊維幅の５０％未満の場
合には、隣接する強化繊維束が密接し過ぎるため、互い
にモノフィラメント状に開繊するのを阻害し合い、強化
繊維束をモノフィラメント状に開繊させることができ
ず、各々の強化繊維束の開繊状態にむらが生ずるので、
強化繊維に対する樹脂粉体の付着状態が悪い部分が生じ
て、ボイドが残ったり幅方向に肉厚むらが生じたりし
て、外観が悪く強度が低い繊維複合シートしか得ること
ができない。When the width of the bar is less than 50% of the fiber width when the monofilaments in the reinforcing fiber bundle are juxtaposed with each other without a gap, adjacent reinforcing fiber bundles are too close to each other, so that they are opened into monofilaments. Since they do not interfere with each other and the reinforcing fiber bundle cannot be opened into a monofilament, unevenness occurs in the opened state of each reinforcing fiber bundle,
Only a fiber composite sheet having a poor appearance and a low strength can be obtained because a portion where the resin powder adheres to the reinforcing fibers is in a bad state and voids remain or uneven thickness occurs in the width direction.
【００１８】逆に、その上限については、理論上では、
（モノフィラメントの平均直径×モノフィラメント数）
＋（樹脂粉体の平均直径×モノフィラメント数）まで可
能であるが、実際上は、バーの幅が強化繊維束中のモノ
フィラメントを隙間なく並列させたときの繊維幅の１０
０％を超える場合には、開繊した強化繊維の厚みが薄く
なるために、モノフィラメントが樹脂粉体を保持する力
が弱く、流動槽を出てから加熱装置まで移動する間に、
樹脂粉体が付着した強化繊維が途中に設けられた案内バ
ーに接触した際に樹脂粉体がかき落とされたり、又は、
移動中に樹脂粉体が自然落下したりして、強化繊維に対
する粉体樹脂の保持状態が悪い部分が生じて、ボイドが
残ったり幅方向に肉厚むらが生じたりして、やはり外観
が悪く強度が低い繊維複合シートしか得ることができな
い。On the contrary, with respect to the upper limit, theoretically,
(Average diameter of monofilament x number of monofilaments)
+ (Average diameter of resin powder x number of monofilaments) is possible, but in practice, the bar width is 10 times the fiber width when the monofilaments in the reinforcing fiber bundle are arranged side by side without a gap.
If it exceeds 0%, the strength of the reinforced fibers that have been opened becomes thin, so the force with which the monofilament holds the resin powder is weak, and while moving from the flow tank to the heating device,
The resin powder is scraped off when the reinforcing fiber to which the resin powder is attached comes into contact with the guide bar provided on the way, or
The resin powder spontaneously falls during the movement, which causes a part where the powder resin is not held properly against the reinforcing fibers, leaving voids and uneven wall thickness in the width direction. Only a fiber composite sheet with low strength can be obtained.
【００１９】又、流動槽を出た樹脂粉体が付着した強化
繊維を、その開繊幅のまま、加熱装置まで移動させた場
合、強化繊維が樹脂粉体を保持する力が充分でないため
に、樹脂粉体が付着した強化繊維が途中に設けられた案
内バーに接触した際に樹脂粉体かき落とされたり、又
は、移動中に樹脂粉体が自然落下したりして、強化繊維
に対する粉体樹脂の付着状態の悪くなる部分が発生し易
くなる。Further, when the reinforcing fibers adhering to the resin powder that have flowed out of the fluidized tank are moved to the heating device while maintaining the spread width, the reinforcing fibers do not have sufficient force to hold the resin powder. , When the reinforcing fibers to which the resin powder adheres come into contact with the guide bar provided on the way, the resin powder is scraped off, or the resin powder spontaneously falls during the movement, and A portion where the adhered state of the body resin is deteriorated is likely to occur.
【００２０】このため、本発明においては、樹脂粉体が
付着した強化繊維の開繊幅をその５０〜９０％の幅に狭
める工程を有する。強化繊維き開繊幅を狭めることによ
り、強化繊維が樹脂粉体を保持する力が強くなるため
に、加熱装置まで移動させた場合、樹脂粉体が付着した
強化繊維が途中に設けられた案内バーに接触した際に樹
脂粉体かき落とされたり、又は、移動中に樹脂粉体が自
然落下したりすることがなく、流動槽において、強化繊
維束をモノフィラメント状に開繊させつつ強化繊維に幅
方向に厚さが均一になるように樹脂粉体を付着させた状
態を保持したまま、粉体樹脂が付着した強化繊維を加熱
装置まで移動させることができる。Therefore, in the present invention, there is a step of narrowing the opening width of the reinforcing fibers to which the resin powder is attached to the width of 50 to 90% thereof. By narrowing the width of the reinforcing fiber opening, the strength of the reinforcing fiber to hold the resin powder becomes stronger.Therefore, when the fiber is moved to the heating device, the reinforcing fiber to which the resin powder adheres is provided on the way. The resin powder will not be scraped off when it comes into contact with the bar, or the resin powder will not fall spontaneously during movement. While maintaining the state in which the resin powder is adhered so that the thickness becomes uniform in the width direction, the reinforcing fiber to which the powder resin is adhered can be moved to the heating device.
【００２１】狭める幅が開繊幅の５０％未満の場合に
は、樹脂粉体が付着した強化繊維に幅方向に厚さむらが
生じて、得られる繊維複合シートは幅方向に肉厚が不均
一となってしまい、逆に、９０％を超える場合には、強
化繊維の樹脂粉体の保持効果が少なく、上記の如き効果
が期待できない。When the width to be narrowed is less than 50% of the opening width, the reinforcing fibers to which the resin powder adheres have uneven thickness in the width direction, and the obtained fiber composite sheet has an uneven thickness in the width direction. On the contrary, if it exceeds 90%, the effect of holding the resin powder of the reinforcing fiber is small, and the above effect cannot be expected.
【００２２】樹脂粉体が付着した強化繊維をその繊維幅
の５０〜９０％の幅に狭める方法としては、例えば、モ
ノフィラメント状に開繊し樹脂粉体が付着した強化繊維
を、流動槽中又は流動槽の外部の加熱装置に至るまでの
間に案内バーを設け、その案内バーの両端部に順次その
幅を狭めるガイドを設け、この案内バーに、樹脂粉体が
付着し強化繊維を接触させたり、又は、全体的に凹面を
有する案内バーに、樹脂粉体が付着し強化繊維を接触さ
せて幅方向に均一に幅を狭めたりする方法が挙げられ
る。As a method of narrowing the reinforcing fibers to which the resin powder is adhered to a width of 50 to 90% of the fiber width, for example, the reinforcing fibers to which the resin powder is adhered and which are opened in a monofilament are placed in a fluid tank or A guide bar is installed between the heating device and the outside of the fluidized tank, and guides are provided at both ends of the guide bar to reduce the width of the guide bar. Alternatively, a method may be used in which the resin powder adheres to the guide bar having a concave surface as a whole and the reinforcing fibers are brought into contact with the guide bar to uniformly narrow the width.
【００２３】尚、両端部にガイドを設けた案内バーを使
用して幅を狭める場合には、理論上では、強化繊維の両
側部の幅の狭め率が大きくなるが、実際上は、強化繊維
束をバーに押圧状態にて摺動させた場合、バーの両側部
の強化繊維の分布量が少なくなる傾向があるので、この
問題を解消する意味においてむしろ好ましい方法として
採用することができる。When narrowing the width by using the guide bars provided with the guides at both ends, theoretically, the narrowing ratio of the width of the both sides of the reinforcing fiber becomes large. When the bundle is slid on the bar in a pressed state, the distribution amount of the reinforcing fibers on both sides of the bar tends to be small, so that it can be adopted as a preferable method in the sense of solving this problem.
【００２４】ガイドとしては、ゴム、プラスチック、金
属等の材料からなる、強化繊維と接触しても強化繊維を
破損しない表面状態、形状で備えたものが使用される。
案内バーへのガイドの取付け方法としては、例えば、単
に両端部の幅を規制して、その間に強化繊維の両側部を
絞り込むようにしたり、ガイドに切欠きを設けその切欠
きに強化繊維の両側部を収束するようにしたり、ガイド
を傾斜させ、中央方向に強化繊維を滑らせたりする方法
等が挙げられる。As the guide, a guide made of a material such as rubber, plastic or metal and having a surface state and a shape that does not damage the reinforcing fiber even when it comes into contact with the reinforcing fiber is used.
As a method of attaching the guide to the guide bar, for example, simply restricting the width of both ends and narrowing both sides of the reinforcing fiber between them, or providing a notch in the guide and forming both sides of the reinforcing fiber in the notch. Examples include a method of converging the portions, a method of inclining the guide and sliding the reinforcing fibers toward the center, and the like.
【００２５】本発明においては、開繊幅を狭めて樹脂粉
体を保持せしめた強化繊維を加熱装置に導いてシート化
する工程を有する。強化繊維に付着した樹脂粉体を加熱
溶融する加熱装置としては、加熱ロール、熱風、遠赤外
線等の凡用加熱手段が使用できる。加熱温度は、樹脂粉
体の種類、加熱時間、繊維複合シートの用途等により適
宜選択される。In the present invention, there is a step of introducing the reinforcing fibers holding the resin powder by narrowing the spread width into a heating device to form a sheet. As a heating device for heating and melting the resin powder adhered to the reinforcing fiber, a general heating means such as a heating roll, hot air or far infrared ray can be used. The heating temperature is appropriately selected depending on the type of resin powder, the heating time, the use of the fiber composite sheet, and the like.
【００２６】加熱溶融した樹脂粉体が付着した強化繊維
をシート化する方法としては、加熱手段が加熱ロールの
場合には、樹脂粉体が付着した強化繊維を加熱ロールに
通すことによりシート化することができ、この場合に
は、連続製造することができるので便利であるが、加熱
手段が熱風、遠赤外等の場合には、カレンダー加工等に
よりシート化する方法等が適宜採用される。加熱溶融し
てシート化したものを冷却する方法としては、冷却ロー
ル、ブロア等が使用できる。When the heating means is a heating roll, as a method for forming a sheet of the reinforcing fiber having the heated and melted resin powder attached thereto, the reinforcing fiber having the resin powder attached thereto is passed through a heating roll to form a sheet. In this case, it is convenient because continuous production is possible, but when the heating means is hot air, far infrared rays, etc., a method of forming a sheet by calendering or the like is appropriately adopted. A cooling roll, a blower, or the like can be used as a method for cooling the sheet formed by heating and melting.
【００２７】以下、本発明を図面を参照して説明する。
図１は、本発明の繊維複合シートの製造方法の例の工程
を説明する側面図である。The present invention will be described below with reference to the drawings.
FIG. 1 is a side view illustrating steps of an example of a method for producing a fiber composite sheet of the present invention.
【００２８】まず、最初の工程において、ボビン１１、
１１より繰り出した多数の連続モノフィラメントよりな
る強化繊維束Ｆ１を流動槽２に導く。流動槽２には、容
器２１の底部に、多数の通気孔が設けられており、気体
供給路から送られた空気や窒素ガス等の気体Ｇが通気孔
を通って容器２１内に供給されるようになっている。容
器２１内に充填された樹脂粉体は、その気体Ｇの噴出に
よって流動化した状態となり、流動床Ｒが形成されてい
る。First, in the first step, the bobbin 11,
A reinforcing fiber bundle F1 composed of a large number of continuous monofilaments fed from 11 is guided to the fluid tank 2. The flow tank 2 is provided with a large number of vent holes at the bottom of the container 21, and gas G such as air or nitrogen gas sent from the gas supply path is supplied into the container 21 through the vent holes. It is like this. The resin powder filled in the container 21 is in a fluidized state due to the ejection of the gas G, and a fluidized bed R is formed.
【００２９】容器２１の内部には強化繊維束Ｆ１を押圧
状態にて摺動させるバー２２、２２、２２が設けられて
いる。バー２２、２２、２２の有効幅は、強化繊維束Ｆ
１のモノフィラメントを隙間なく並列させたときの繊維
幅の５０〜１００％の幅とされている。又、容器２１の
入口側に、強化繊維束Ｆ１を案内するための案内バー２
３、２３、２３が設けられている。Bars 22, 22, 22 are provided inside the container 21 for sliding the reinforcing fiber bundle F1 in a pressed state. The effective width of the bars 22, 22, 22 is the reinforcing fiber bundle F.
The width is 50 to 100% of the fiber width when one monofilament is arranged side by side without a gap. A guide bar 2 for guiding the reinforcing fiber bundle F1 is provided on the inlet side of the container 21.
3, 23, 23 are provided.
【００３０】図２に拡大して示す如く、強化繊維束Ｆ１
を一定間隔に並列させ、流動槽２内にて、流動槽２内に
設置されたバー２２、２２、２２にじくざく状に通し押
圧状態にして摺動させて、バーの擦り揉み等によって、
隣接する強化繊維束をモノフィラメント状に充分且つ均
一に開繊させつつ、強化繊維のモノフィラメント間に樹
脂粉体を侵入させるようにして、強化繊維に幅方向に厚
さが均一になるように樹脂粉体を付着させる。As shown enlarged in FIG. 2, the reinforcing fiber bundle F1
Are arranged in parallel at a constant interval, and in the flow tank 2, the bars 22, 22, 22 installed in the flow tank 2 are slid into a pressed state and slid, and by rubbing and rubbing the bars. ,
While opening the adjacent reinforcing fiber bundle into a monofilament sufficiently and uniformly, the resin powder is made to penetrate between the monofilaments of the reinforcing fiber so that the reinforcing fiber has a uniform thickness in the width direction. Attach the body.
【００３１】尚、強化繊維束Ｆ１を流動槽２内のバー２
２、２２、２２に押圧状態にて摺動させる際の強化繊維
束Ｆ１のバーに対する押圧力は、巻取機６による引っ張
り力、バー２２、２２、２２、案内バー２３、２３、２
３、バー３１、３２、３３等と強化繊維束との摩擦力、
強化繊維束の各バーに対する角度、ボビン１１、１１の
ブレーキ等の諸因子により異なるが、その押圧力の調節
はそれらの諸因子を調整することにより行う。The reinforcing fiber bundle F1 is placed in the bar 2 in the fluid tank 2.
The pressing force applied to the bar of the reinforcing fiber bundle F1 when sliding in the pressed state to the bars 2, 22, 22 is the pulling force by the winder 6, the bars 22, 22, 22, the guide bars 23, 23, 2.
3, the frictional force between the bars 31, 32, 33 and the like and the reinforcing fiber bundle,
Although it depends on various factors such as the angle of the reinforcing fiber bundle with respect to each bar and the bobbins 11 and 11 and the like, the pressing force is adjusted by adjusting those factors.
【００３２】又、流動槽２内にて、強化繊維束Ｆ１の開
繊を促進させるために、流動槽２中又は流動槽２に入る
手前で強化繊維束Ｆ１に振動を与えたり、流動槽２に入
る手前で強化繊維束Ｆ１にエアーを吹き付ける等の補助
手段を講じても構わない。Further, in order to accelerate the opening of the reinforcing fiber bundle F1 in the fluid tank 2, the reinforcing fiber bundle F1 is vibrated in the fluid tank 2 or before entering the fluid tank 2, or the fluid tank 2 You may take auxiliary means such as blowing air to the reinforcing fiber bundle F1 before entering.
【００３３】次の工程において、モノフィラメント状に
開繊し樹脂粉体が付着した強化繊維Ｆ２を、流動槽２の
外部に順次設けられたバー３１、３２、３３に導く。図
３に拡大して示す如く、それぞれのバー３１、３２、３
３の両端部には、ガイド３１１、３１１、３２１、３２
１、３３１、３３１がそれぞれ設けられている。そし
て、最後のバー３３のガイド３３１、３３１間の幅は、
流動槽２内に設けられたバー２２、２２、２２の幅、つ
まり樹脂粉体が付着した強化繊維Ｆ２の開繊幅の５０〜
９０％の幅になるように設定されている。流動槽２と最
後のバー３３との間に設けられたバー３１のガイド３１
１、３１１間の幅、及び３２のガイド３２１、３２１間
の幅は、流動槽２内に設けられたバー２２、２２、２２
の幅からバー３３のガイド３３１、３３１間の幅まで、
順次狭めるような幅に設定されている。In the next step, the reinforcing fibers F2 opened into a monofilament and having the resin powder adhered thereto are guided to the bars 31, 32 and 33 sequentially provided outside the fluid tank 2. As shown enlarged in FIG. 3, the respective bars 31, 32, 3 are shown.
Guides 311, 311, 321, 32 are provided at both ends of
1, 331 and 331 are provided respectively. And the width between the guides 331 and 331 of the last bar 33 is
The width of the bars 22, 22, 22 provided in the fluidized tank 2, that is, the opening width of the reinforcing fiber F2 to which the resin powder is attached is 50 to 50
The width is set to 90%. A guide 31 of a bar 31 provided between the flow tank 2 and the last bar 33
The width between 1, 311 and the width between the 32 guides 321 and 321 are the widths of the bars 22, 22, 22 provided in the fluid tank 2.
From the width of the bar 33 to the width between the guides 331, 331 of the bar 33,
The width is set so as to narrow gradually.
【００３４】そして、樹脂粉体が付着した強化繊維Ｆ２
をバー３１、３２、３３に順次接触させて、その幅を流
動槽２内に設けられたバー２２、２２、２２の幅、つま
り樹脂粉体が付着した強化繊維Ｆ２の開繊幅の５０〜９
０％の幅に狭める。開繊幅を狭めることにより、強化繊
維のモノフィラメント間に樹脂粉体が保持され、樹脂粉
体が落下しにくい状態となる。Then, the reinforcing fiber F2 to which the resin powder is attached
Are sequentially contacted with the bars 31, 32, 33, and the width thereof is the width of the bars 22, 22, 22 provided in the fluid tank 2, that is, the opening width of the reinforcing fiber F2 to which the resin powder adheres 9
Narrow to 0%. By narrowing the opening width, the resin powder is held between the monofilaments of the reinforcing fibers, and the resin powder is less likely to fall.
【００３５】次の工程にて、開繊幅を狭めて樹脂粉体を
保持させた強化繊維Ｆ３を、樹脂粉体が幅方向に均一な
厚さ付着した状態を保持させたまま、加熱ロール４に導
き、シート化する。このシートを冷却ロール５を経て、
巻取機６にて巻き取り、図２に示す如く、樹脂層７１中
に強化繊維７２が均一に分散埋設され、幅方向に均一な
厚さを有する繊維複合シート７を得る。In the next step, the heating fiber 4 is held with the reinforcing fiber F3 having a narrowed opening width and holding the resin powder, in a state where the resin powder is adhered to the width direction with a uniform thickness. And make a sheet. This sheet is passed through a cooling roll 5 and
The fiber composite sheet 7 is wound by a winder 6 and, as shown in FIG. 2, the reinforcing fibers 72 are uniformly embedded in the resin layer 71 to obtain a fiber composite sheet 7 having a uniform thickness in the width direction.
【００３６】[0036]
【作用】本発明の繊維複合シートの製造方法は、多数の
連続モノフィラメントよりなる強化繊維束を、樹脂粉体
が充填された流動槽内にて、流動槽内に設けられ、強化
繊維束中のモノフィラメントを隙間なく並列させたとき
の繊維幅の５０〜１００％の幅を有するバーに押圧状態
にて摺動させて、強化繊維束をモノフィラメント状に開
繊させつつ強化繊維に樹脂粉体を付着させる工程を経る
ことにより、バーの擦り揉み等により、強化繊維束をモ
ノフィラメント状に充分且つ均一に開繊させつつ、強化
繊維のモノフィラメント間に侵入させるように樹脂粉体
を付着させることができ、樹脂粉体が付着した強化繊維
の開繊幅をその５０〜９０％の幅に狭める工程を経るこ
とにより、付着した樹脂粉体が強化繊維のモノフィラメ
ント間に保持されて、流動槽を出た後、加熱装置に至る
までの案内バーとの接触等による衝撃によりふるい落と
されたり、移動中に自然落下したりするようなことがな
く、このような状態で、開繊幅を狭めて樹脂粉体を保持
せしめた強化繊維を加熱装置に導いてシート化する工程
を経ることにより、樹脂粉体が幅方向に均一に付着した
状態を保持させた強化繊維をシート化することができる
ので、ボイドが残らず、幅方向に肉厚むらがなくて、外
観及び強度に優れた繊維複合シートを得ることができ
る。According to the method for producing a fiber composite sheet of the present invention, a reinforcing fiber bundle composed of a large number of continuous monofilaments is provided in a fluid tank filled with resin powder, and the reinforcing fiber bundle The resin powder is attached to the reinforcing fiber while opening the reinforcing fiber bundle into a monofilament by sliding it under pressure with a bar having a width of 50 to 100% of the fiber width when the monofilaments are arranged side by side without a gap. By passing through the step, by rubbing the bar, etc., while opening the reinforcing fiber bundle into a monofilament sufficiently and uniformly, it is possible to adhere the resin powder so as to penetrate between the monofilaments of the reinforcing fiber, By passing through the step of narrowing the opening width of the reinforcing fiber to which the resin powder adheres to the width of 50 to 90%, the adhered resin powder is retained between the monofilaments of the reinforcing fiber. After exiting the flow tank, there is no possibility that it will be screened out by the impact of contact with the guide bar until reaching the heating device, or will not fall spontaneously during movement. The reinforced fibers holding the resin powder with the width narrowed are guided to the heating device and formed into a sheet, whereby the reinforced fibers with the resin powder uniformly attached in the width direction are formed into a sheet. Therefore, it is possible to obtain a fiber composite sheet having no voids, no thickness unevenness in the width direction, and excellent appearance and strength.
【００３７】[0037]
【実施例】実施例１ 図１を参照して説明した工程により、図４に示す如き幅
４００ｍｍの繊維複合シート７の製造を行った。強化繊
維束として、ガラスロービング（日東紡社製、商品名
「＃４４００」、繊維直径２３μｍ、モノフィラメント
４０００本の束）１２本を用いた。樹脂粉体としては、
塩化ビニル樹脂粉体（信越化学社製、商品名「ＭＡ８０
０Ｓ」、平均粒径１５０μｍ）１００重量部に、ジブチ
ル錫ジマレエート１．５重量部と、ポリエチレンワック
ス０．５重量部を添加し、スーパーミキサーにて混合し
たものを用いた。 Example 1 A fiber composite sheet 7 having a width of 400 mm as shown in FIG. 4 was manufactured by the process described with reference to FIG. As the reinforcing fiber bundle, 12 glass rovings (manufactured by Nitto Boseki Co., Ltd., trade name “# 4400”, fiber diameter 23 μm, bundle of 4000 monofilaments) were used. As resin powder,
Vinyl chloride resin powder (Shin-Etsu Chemical Co., Ltd., trade name "MA80
0S ", average particle size 150 μm), 100 parts by weight of dibutyltin dimaleate and 0.5 parts by weight of polyethylene wax were added and mixed in a super mixer.
【００３８】強化繊維束１２本を横一列に並べ、樹脂粉
体を充填した流動槽２内に導き、流動槽２内に設けられ
た有効幅７７３ｍｍ（強化繊維束Ｆ１のモノフィラメン
トを並列させたときの繊維幅の７０％に相当）のバー２
２、２２、２２にじぐざく状に押圧力１ｋｇｆ／ｃｍの
押圧状態にして摺動させて、強化繊維束Ｆ１を幅７７３
ｍｍのモノフィラメント状に開繊させつつ、強化繊維に
樹脂粉体を付着させた。Twelve reinforcing fiber bundles are arranged side by side and guided into the fluid tank 2 filled with resin powder, and an effective width of 773 mm provided in the fluid tank 2 (when the monofilaments of the reinforcing fiber bundle F1 are arranged in parallel) (Corresponding to 70% of the fiber width)
The reinforced fiber bundle F1 has a width of 773 by sliding it in a zigzag shape with a pressing force of 1 kgf / cm.
The resin powder was attached to the reinforcing fibers while opening the monofilament of mm.
【００３９】次に、樹脂粉体が付着した強化繊維Ｆ２
を、３段に設けられたバー３１、３２、３３に接触させ
て、バー３３の両端部に設けられたガイド３３１、３３
１間の幅６２０ｍｍ（開繊した強化繊維の幅の８０％に
相当）になるまでその幅を狭め、粉体樹脂をフィラメン
ト間に保持させた。Next, the reinforcing fiber F2 to which the resin powder is attached
By contacting the bars 31, 32, 33 provided in three stages, and the guides 331, 33 provided at both ends of the bar 33.
The width was narrowed to a width of 620 mm (corresponding to 80% of the width of the opened reinforcing fiber), and the powder resin was held between the filaments.
【００４０】次に、開繊幅を狭めて樹脂粉体が幅方向に
均一な厚さに付着した状態を保持させた強化繊維Ｆ３
を、２００℃に加熱した加熱ロール４に導き、シート化
し、冷却ロール５を経て、巻取機６にて２．０ｍ／ｍｉ
ｎの速度にて巻き取り、平均肉厚０．５ｍｍの繊維複合
シート７を得た。得られた繊維複合シートについて、肉
厚ＣＶ値、繊維重量ＣＶ値、ボイド率、曲げ強度を測定
した。その結果を表１に示した。Next, the opening width is narrowed to keep the resin powder adhered in a uniform thickness in the width direction to the reinforcing fiber F3.
To a heating roll 4 heated to 200 ° C., formed into a sheet, passed through a cooling roll 5, and then taken up by a winder 6 at 2.0 m / mi.
It was wound at a speed of n to obtain a fiber composite sheet 7 having an average wall thickness of 0.5 mm. About the obtained fiber composite sheet, the wall thickness CV value, the fiber weight CV value, the void ratio, and the bending strength were measured. The results are shown in Table 1.
【００４１】尚、肉厚ＣＶ値は、得られた繊維複合シー
トから、幅方向に４０分割し、マイクロメーターを用い
て肉厚を測定し算出した。繊維重量ＣＶ値は、幅方向に
４０分割したものを長さ５０ｍｍに切断して、サンプル
を作製し、このサンプルを電気炉にて樹脂分を燃焼分離
し、ガラスのみの重量を測定し算出した。The wall thickness CV value was calculated by dividing the obtained fiber composite sheet into 40 parts in the width direction and measuring the wall thickness using a micrometer. The fiber weight CV value was calculated by cutting 40 pieces in the width direction into 50 mm lengths to prepare a sample, and burning and separating the resin component of this sample in an electric furnace to measure the weight of only glass. .
【００４２】ボイド率は、上記サンプルの水中で測定し
た水に対する実比重と、繊維含有率から算出した水に対
する比重（繊維比重２．５、樹脂比重１．３６で計算）
より算出した。曲げ強度は、上記サンプルを５枚積層し
てプレス成形し、繊維垂直方向の曲げ強度をオートグラ
フを用いて、３点曲げ試験を行って測定した。The void ratio is the actual specific gravity of the above sample measured in water, and the specific gravity of the sample calculated from the fiber content (calculated with a fiber specific gravity of 2.5 and a resin specific gravity of 1.36).
Calculated from The bending strength was measured by stacking five of the above samples and press-molding them, and performing bending strength in the fiber vertical direction by performing a three-point bending test using an autograph.
【００４３】実施例２ 強化繊維束Ｆ１を、流動槽２内に設けられた有効幅７７
３ｍｍ（強化繊維束Ｆ１のモノフィラメントを並列させ
たときの繊維幅の７０％に相当）のバー２２、２２、２
２に押圧状態にして摺動させて、幅７７３ｍｍのモノフ
ィラメント状に開繊させたこと、樹脂粉体が付着した強
化繊維Ｆ２を、３段に設けられたバー３１、３２、３３
に接触させて、バー３３の両端部に設けられたガイド３
３１、３３１間の幅６２０ｍｍ（開繊した強化繊維の幅
の５６％に相当）になるまでその幅を狭めたこと以外
は、実施例１と同様にして、実施例１と同様の繊維複合
シート７を得た。得られた繊維複合シートについて、実
施例１と同様にして、肉厚ＣＶ値、繊維重量ＣＶ値、ボ
イド率、曲げ強度の測定を行った。その結果を表１に示
した。 Example 2 The reinforcing fiber bundle F1 is applied to the effective width 77 provided in the fluid tank 2.
Bars 22, 22, 2 of 3 mm (corresponding to 70% of the fiber width when the monofilaments of the reinforcing fiber bundle F1 are arranged in parallel)
2 was pressed and slid to open into a monofilament having a width of 773 mm, and the reinforcing fiber F2 to which the resin powder was adhered was provided in three stages of bars 31, 32, 33.
And the guides 3 provided at both ends of the bar 33.
The same fiber composite sheet as in Example 1 except that the width was narrowed to 620 mm between 31 and 331 (corresponding to 56% of the width of the opened reinforced fiber). Got 7. For the obtained fiber composite sheet, the wall thickness CV value, fiber weight CV value, void ratio, and bending strength were measured in the same manner as in Example 1. The results are shown in Table 1.
【００４４】実施例３ 樹脂粉体が付着した強化繊維Ｆ２を、３段に設けられた
バー３１、３２、３３に接触させて、バー３３の両端部
に設けられたガイド３３１、３３１間の幅３７２ｍｍ
（開繊した強化繊維の幅の６０％に相当）になるまでそ
の幅を狭めたこと以外は、実施例１と同様にして、実施
例１と同様の繊維複合シート７を得た。得られた繊維複
合シートについて、実施例１と同様にして、肉厚ＣＶ
値、繊維重量ＣＶ値、ボイド率、曲げ強度の測定を行っ
た。その結果を表１に示した。 Example 3 The width between the guides 331, 331 provided at both ends of the bar 33 by contacting the reinforcing fibers F2 to which the resin powder adheres with the bars 31, 32, 33 provided in three stages. 372 mm
A fiber composite sheet 7 similar to that of Example 1 was obtained in the same manner as in Example 1 except that the width was narrowed to (corresponding to 60% of the width of the opened reinforcing fiber). About the obtained fiber composite sheet, in the same manner as in Example 1, the wall thickness CV
The value, the fiber weight CV value, the void ratio, and the bending strength were measured. The results are shown in Table 1.
【００４５】比較例１ 強化繊維束Ｆ１を、流動槽２内に設けられた有効幅３８
６ｍｍ（強化繊維束Ｆ１のモノフィラメントを並列させ
たときの繊維幅の３５％に相当）のバー２２、２２、２
２に押圧状態にして摺動させて、幅３８６ｍｍのモノフ
ィラメント状に開繊させたこと、流動槽２を出た開繊し
た強化繊維Ｆ２の幅を狭めることをしなかったこと以外
は、実施例１と同様にして、実施例１と同様の繊維複合
シート７を得た。得られた繊維複合シートについて、実
施例１と同様にして、肉厚ＣＶ値、繊維重量ＣＶ値、ボ
イド率、曲げ強度の測定を行った。その結果を表１に示
した。 Comparative Example 1 A reinforcing fiber bundle F1 is provided in an effective width 38 provided in the fluid tank 2.
Bars 22, 22, 2 of 6 mm (corresponding to 35% of the fiber width when the monofilaments of the reinforcing fiber bundle F1 are arranged in parallel)
Example 2 except that the fiber was opened in a monofilament shape having a width of 386 mm by pressing in 2 and was slid, and the width of the opened reinforcing fiber F2 exiting the fluid tank 2 was not narrowed. A fiber composite sheet 7 similar to that of Example 1 was obtained in the same manner as in Example 1. For the obtained fiber composite sheet, the wall thickness CV value, fiber weight CV value, void ratio, and bending strength were measured in the same manner as in Example 1. The results are shown in Table 1.
【００４６】比較例２ 強化繊維束Ｆ１を、流動槽２内に設けられた有効幅１３
２０ｍｍ（強化繊維束Ｆ１のモノフィラメントを並列さ
せたときの繊維幅の１２０％に相当）のバー２２、２
２、２２に押圧状態にして摺動させて、幅１３２０ｍｍ
のモノフィラメント状に開繊させたこと、樹脂粉体が付
着した強化繊維Ｆ２を、３段に設けられたバー３１、３
２、３３に接触させて、バー３３の両端部に設けられた
ガイド３３１、３３１間の幅６２０ｍｍ（開繊した強化
繊維の幅の４５％に相当）になるまでその幅を狭めたこ
と以外は、実施例１と同様にして、実施例１と同様の繊
維複合シート７を得た。得られた繊維複合シートについ
て、実施例１と同様にして、肉厚ＣＶ値、繊維重量ＣＶ
値、ボイド率、曲げ強度の測定を行った。その結果を表
１に示した。 Comparative Example 2 A reinforcing fiber bundle F1 is provided in an effective width 13 provided in the fluid tank 2.
Bars 22, 2 of 20 mm (corresponding to 120% of the fiber width when the monofilaments of the reinforcing fiber bundle F1 are juxtaposed)
Width 1320 mm by sliding it while pressing it to 2, 22
The monofilament-shaped opening of the reinforcing fiber F2 to which the resin powder is adhered is provided in three bars 31, 3
2, except that the width is reduced to 620 mm between the guides 331, 331 provided at both ends of the bar 33 (corresponding to 45% of the width of the opened reinforcing fiber) by contacting with 2, 33. A fiber composite sheet 7 similar to that in Example 1 was obtained in the same manner as in Example 1. About the obtained fiber composite sheet, in the same manner as in Example 1, the wall thickness CV value and the fiber weight CV
The value, void ratio, and bending strength were measured. The results are shown in Table 1.
【００４７】比較例３ 流動槽２を出た開繊した強化繊維Ｆ２の幅を狭めること
をしなかったこと以外は、実施例１と同様にして、実施
例１と同様の繊維複合シート７を得た。得られた繊維複
合シートについて、実施例１と同様にして、肉厚ＣＶ
値、繊維重量ＣＶ値、ボイド率、曲げ強度の測定を行っ
た。その結果を表１に示した。 Comparative Example 3 The same fiber composite sheet 7 as in Example 1 was obtained in the same manner as in Example 1 except that the width of the opened reinforcing fiber F2 exiting the fluid tank 2 was not narrowed. Obtained. About the obtained fiber composite sheet, in the same manner as in Example 1, the wall thickness CV
The value, the fiber weight CV value, the void ratio, and the bending strength were measured. The results are shown in Table 1.
【００４８】比較例４ 樹脂粉体が付着した強化繊維Ｆ２を、３段に設けられた
バー３１、３２、３３に接触させて、バー３３の両端部
に設けられたガイド３３１、３３１間の幅５９０ｍｍ
（開繊した強化繊維の幅の９５％に相当）になるまでそ
の幅を狭めたこと以外は、実施例１と同様にして、実施
例１と同様の繊維複合シート７を得た。得られた繊維複
合シートについて、実施例１と同様にして、肉厚ＣＶ
値、繊維重量ＣＶ値、ボイド率、曲げ強度の測定を行っ
た。その結果を表１に示した。 Comparative Example 4 The width between the guides 331, 331 provided at both ends of the bar 33 by contacting the reinforcing fibers F2 to which the resin powder adheres with the bars 31, 32, 33 provided in three stages. 590 mm
A fiber composite sheet 7 similar to that of Example 1 was obtained in the same manner as in Example 1 except that the width was narrowed until it became (corresponding to 95% of the width of the opened reinforcing fiber). About the obtained fiber composite sheet, in the same manner as in Example 1, the wall thickness CV
The value, the fiber weight CV value, the void ratio, and the bending strength were measured. The results are shown in Table 1.
【００４９】比較例５ 樹脂粉体が付着した強化繊維Ｆ２を、３段に設けられた
バー３１、３２、３３に接触させて、バー３３の両端部
に設けられたガイド３３１間の幅２８０ｍｍ（開繊した
強化繊維の幅の４５％に相当）になるまでその幅を狭め
たこと以外は、実施例１と同様にして、実施例１と同様
の繊維複合シート７を得た。得られた繊維複合シートに
ついて、実施例１と同様にして、肉厚ＣＶ値、繊維重量
ＣＶ値、ボイド率、曲げ強度の測定を行った。その結果
を表１に示した。 Comparative Example 5 The reinforcing fiber F2 to which the resin powder adheres is brought into contact with the bars 31, 32 and 33 provided in three stages, and the width 280 mm between the guides 331 provided at both ends of the bar 33 ( A fiber composite sheet 7 similar to that in Example 1 was obtained in the same manner as in Example 1 except that the width was narrowed to 45% of the width of the opened reinforcing fibers. For the obtained fiber composite sheet, the wall thickness CV value, fiber weight CV value, void ratio, and bending strength were measured in the same manner as in Example 1. The results are shown in Table 1.
【００５０】[0050]
【表１】 [Table 1]
【００５１】[0051]
【発明の効果】本発明の繊維複合シートの製造方法は、
上記の如き構成とされているので、ボイドが残らず、幅
方向に肉厚むらがなくて、外観及び強度に優れた繊維複
合シートを得ることができる。The method for producing the fiber composite sheet of the present invention comprises:
With the above-mentioned structure, it is possible to obtain a fiber composite sheet that has no voids, has no thickness unevenness in the width direction, and has excellent appearance and strength.
【００５２】[0052]
【図１】本発明の繊維複合シートの製造方法の一例の工
程を説明する側面図である。FIG. 1 is a side view illustrating steps of an example of a method for producing a fiber composite sheet of the present invention.
【図２】図１の工程の一部を拡大して示す斜視図であ
る。2 is an enlarged perspective view showing a part of the process of FIG. 1. FIG.
【図３】図１の工程の一部を拡大して示す斜視図であ
る。3 is an enlarged perspective view showing a part of the process of FIG. 1. FIG.
【図４】本発明により得られた繊維複合シートの一例を
示す断面図である。FIG. 4 is a cross-sectional view showing an example of a fiber composite sheet obtained by the present invention.
Ｆ１ 強化繊維束 ２ 流動槽 ４ 加熱ロール ５ 冷却ロール ６ 巻取装置 ７ 繊維複合シート ２２、３１、３２、３３ バー F1 Reinforcing fiber bundle 2 Fluid tank 4 Heating roll 5 Cooling roll 6 Winding device 7 Fiber composite sheet 22, 31, 32, 33 bar
Claims (1)
化繊維束を、樹脂粉体が充填された流動槽内にて、流動
槽内に設けられ、強化繊維束中のモノフィラメントを隙
間なく並列させたときの繊維幅の５０〜１００％の幅を
有するバーに押圧状態にて摺動させて、強化繊維束をモ
ノフィラメント状に開繊させつつ強化繊維に樹脂粉体を
付着させる工程と、樹脂粉体が付着した強化繊維の開繊
幅をその５０〜９０％の幅に狭める工程と、開繊幅を狭
めて樹脂粉体を保持せしめた強化繊維を加熱装置に導い
てシート化する工程からなることを特徴とする繊維複合
シートの製造方法。1. A reinforcing fiber bundle composed of a large number of continuous monofilaments is provided in a fluidized tank filled with resin powder in a fluidized tank, and the monofilaments in the reinforced fiber bundle are arranged side by side without a gap. A step of sliding a bar having a width of 50 to 100% of the fiber width in a pressed state to adhere the resin powder to the reinforcing fiber while opening the reinforcing fiber bundle into a monofilament, and the resin powder is attached. It comprises a step of narrowing the spread width of the reinforced fiber to a width of 50 to 90% thereof, and a step of guiding the reinforced fiber holding the resin powder by narrowing the spread width to a heating device to form a sheet. And a method for producing a fiber composite sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7576193A JPH06287319A (en) | 1993-04-01 | 1993-04-01 | Production of fibrous composite sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7576193A JPH06287319A (en) | 1993-04-01 | 1993-04-01 | Production of fibrous composite sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06287319A true JPH06287319A (en) | 1994-10-11 |
Family
ID=13585539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7576193A Pending JPH06287319A (en) | 1993-04-01 | 1993-04-01 | Production of fibrous composite sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06287319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435186A (en) * | 2019-07-23 | 2019-11-12 | 李海龙 | A kind of small tow carbon fiber prepreg method |
-
1993
- 1993-04-01 JP JP7576193A patent/JPH06287319A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435186A (en) * | 2019-07-23 | 2019-11-12 | 李海龙 | A kind of small tow carbon fiber prepreg method |
| CN110435186B (en) * | 2019-07-23 | 2021-06-01 | 李海龙 | Method for pre-impregnating small-tow carbon fibers |
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