JP2001316971A - Reinforcing fiber woven fabric, method for producing the same, and yarn opener for reinforcing fiber woven fabric - Google Patents
Reinforcing fiber woven fabric, method for producing the same, and yarn opener for reinforcing fiber woven fabricInfo
- Publication number
- JP2001316971A JP2001316971A JP2000136644A JP2000136644A JP2001316971A JP 2001316971 A JP2001316971 A JP 2001316971A JP 2000136644 A JP2000136644 A JP 2000136644A JP 2000136644 A JP2000136644 A JP 2000136644A JP 2001316971 A JP2001316971 A JP 2001316971A
- Authority
- JP
- Japan
- Prior art keywords
- woven fabric
- reinforcing fiber
- yarn
- fiber woven
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- Treatment Of Fiber Materials (AREA)
- Woven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、強化繊維複合材料
として優れた性能を発揮する強化繊維織物及びその製造
方法、並びに強化繊維織物の糸条開繊装置に関するもの
である。更に詳しくは、使用される糸の直径に対して密
度が相対的に低い強化繊維織物の開口部を矯正して均一
に開繊された強化繊維織物及びその製造方法、並びに強
化繊維織物の糸条開繊装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced fiber woven fabric which exhibits excellent performance as a reinforced fiber composite material, a method for producing the reinforced fiber woven fabric, and an apparatus for opening a reinforced fiber woven fabric. More specifically, a reinforcing fiber woven fabric in which openings of a reinforcing fiber woven fabric having a density relatively low with respect to a diameter of a used yarn are corrected and uniformly opened, a method for producing the same, and a yarn of the reinforcing fiber woven fabric It relates to a fiber opening device.
【０００２】[0002]
【従来の技術】近年、炭素繊維強化プラスチック（以下
「ＣＦＲＰ」という）等の複合材料の使用用途は、つり
竿やゴルフシャフトなどのスポーツレジャー機材から医
療素材、自動車や航空機の構造材として多用されてい
る。このＣＦＲＰの使用範囲を拡大するためには、更に
コストダウンが望まれおり、大きな課題となっている。
そのため、太い強化繊維糸条を開繊し拡幅して偏平な強
化繊維糸条とし、その繊維束を一方向に引き揃えてマト
リックス樹脂中に含有させ、プリプレグを製造すること
でコストダウンを図っている。2. Description of the Related Art In recent years, composite materials such as carbon fiber reinforced plastic (hereinafter referred to as "CFRP") have been widely used as sports materials such as fishing rods and golf shafts, medical materials, and structural materials for automobiles and aircraft. ing. In order to expand the range of use of CFRP, further cost reduction is desired, which is a major problem.
Therefore, the thick reinforcing fiber yarns are spread and widened to flat reinforcing fiber yarns, and the fiber bundles are aligned in one direction and contained in a matrix resin to reduce the cost by manufacturing a prepreg. I have.
【０００３】例えば、特開昭６１−２７５４３８号公報
では、張力下で走行する繊維束を、その走行方向に運動
する往復運動体又は回転体により叩き、更に、前記繊維
束を走行方向に直交する方向で、所定の振幅及び振動数
で強制振動させた後、ローラ表面などの曲面に押し当て
て繊維束を開繊する方法が開示されている。For example, in Japanese Patent Application Laid-Open No. 61-275438, a fiber bundle running under tension is hit by a reciprocating body or a rotating body moving in the running direction, and the fiber bundle is orthogonal to the running direction. A method is disclosed in which a fiber bundle is opened by forcibly vibrating at a predetermined amplitude and frequency in a direction, and then pressing the curved surface such as a roller surface.
【０００４】また、特開昭６２−１８４１７２号公報に
は、張力下で走行する繊維束をローラ表面などの曲面に
押し当てて繊維束を開繊する際に、前記繊維束に熱風を
吹き付け、又は前記繊維束を熱板に接触させて吸引し、
前記繊維束からサイジング剤を除去し、繊維束の開繊を
促進する方法が開示されている。Japanese Patent Application Laid-Open No. Sho 62-184172 discloses that when a fiber bundle running under tension is pressed against a curved surface such as a roller surface to open the fiber bundle, hot air is blown onto the fiber bundle. Or, the fiber bundle is brought into contact with a hot plate and sucked,
A method is disclosed in which a sizing agent is removed from the fiber bundle to promote opening of the fiber bundle.
【０００５】更に、特開平２―３６２３６号公報に開示
されているトウ状物の拡巾方法では、トウ状物の走行路
に配された周面を接触させて配された１対のローラにお
ける少なくとも一方を、同ローラの回転軸方向、即ち、
トウ状物の走行方向と直交する方向に振動させると共
に、前記トウ状物に周期的に張力変動を与えている。こ
の張力変動により、トウ状物は張力が低いときに拡巾効
率が高まり、張力が高いときに前記繊維の配向が高まっ
て、トウ状物の拡巾効果を向上させている。Further, in the method for widening a toe-like object disclosed in Japanese Patent Application Laid-Open No. 2-36236, a pair of rollers arranged by bringing the peripheral surfaces of a tow-like object into contact with a running path are arranged. At least one is in the rotation axis direction of the roller, that is,
Vibration is performed in a direction perpendicular to the running direction of the toe-like object, and the tension is periodically applied to the tow-like object. Due to this tension fluctuation, the spreading efficiency of the tow-like material is increased when the tension is low, and the orientation of the fiber is increased when the tension is high, thereby improving the effect of widening the tow-like material.
【０００６】ところで、強化繊維として炭素繊維を使用
しているＣＦＲＰでは、炭素繊維の引張り弾性率がマト
リックス樹脂の引張り弾性率と比較して極めて大きい。
このため、ＣＦＲＰに引張り応力が作用した場合には、
その引張り応力に対する前記プラスチックの引張り強度
は主に前記炭素繊維により発揮されることになる。従っ
て、前記炭素繊維糸条の強度や炭素繊維のマトリックス
樹脂中での分布が均一であり、且つ同炭素繊維のマトリ
ックス樹脂に対する充填密度が高いほど、繊維強化プラ
スチックとしての引張り強度が向上することになる。Meanwhile, in CFRP using carbon fibers as the reinforcing fibers, the tensile elastic modulus of the carbon fibers is much larger than that of the matrix resin.
For this reason, when tensile stress acts on CFRP,
The tensile strength of the plastic with respect to the tensile stress is mainly exerted by the carbon fibers. Therefore, the strength of the carbon fiber yarn and the distribution of the carbon fibers in the matrix resin are uniform, and the higher the packing density of the carbon fibers in the matrix resin, the higher the tensile strength as a fiber-reinforced plastic. Become.
【０００７】また、繊維強化プラスチック（以下「ＦＲ
Ｐ」という）の引張り強度は、マトリックス樹脂中の強
化繊維糸条の延在方向に平行な方向（０°の方向）に張
力が作用した場合に最大となる。そのため、強化繊維糸
条を一方向に引き揃えたシート状体としてマトリックス
樹脂中に含有させた場合は、その一方向での引張り強度
が向上される。Further, fiber reinforced plastics (hereinafter referred to as “FR
P ") is maximized when a tension acts in a direction (direction of 0 °) parallel to the extending direction of the reinforcing fiber yarn in the matrix resin. Therefore, when the reinforcing fiber yarns are contained in the matrix resin as a sheet-like body aligned in one direction, the tensile strength in one direction is improved.
【０００８】更に、近年では、強化繊維糸条を経糸及び
緯糸の両方向に配した織物としてマトリックス樹脂中に
含有させ、経糸方向及び緯糸方向の二方向での引張り強
度の向上を図っている。このように、多方向からの張力
に対応でき、且つ、マトリックス樹脂中に均一な密度で
強化繊維を含有させるためには、上述したように強化繊
維糸条を織物として含有させることが有効であり、比強
度及び比弾性率が大きい炭素繊維糸条等の強化繊維糸条
からなる強化繊維織物は、通常、一般のシャトル織機や
レピヤ織機により製織されている。Further, in recent years, a reinforcing fiber yarn has been incorporated in a matrix resin as a woven fabric arranged in both directions of a warp and a weft to improve the tensile strength in two directions of a warp direction and a weft direction. As described above, in order to be able to cope with the tension from multiple directions and to make the matrix resin contain the reinforcing fibers at a uniform density, it is effective to contain the reinforcing fiber yarns as a woven fabric as described above. A reinforced fiber woven fabric made of a reinforced fiber yarn such as a carbon fiber yarn having a large specific strength and a specific elastic modulus is usually woven by a general shuttle loom or a repiya loom.
【０００９】しかしながら、一方では、この織り構造に
起因して、ＦＲＰとしての引張り強度が充分に発揮でき
ない場合も生じる。即ち、前記織物における経糸と緯糸
とが交差する交差部においては、経糸及び緯糸が互いに
クリンプすることにより生じる織物の厚み方向に、織物
のシート面に対して交差角が生じることは否めない。そ
のため、シート面に並行な経糸又は緯糸方向での引張り
応力が作用すると、前記交差部において各糸条に剪断方
向の力が働くため、強化繊維糸条の引張り強度が充分に
発揮されなくなる。However, on the other hand, due to the woven structure, there are cases where the tensile strength as FRP cannot be sufficiently exhibited. That is, at the crossing point where the warp and the weft intersect in the woven fabric, it is undeniable that an intersection angle is generated with respect to the sheet surface of the woven fabric in the thickness direction of the woven fabric caused by the crimping of the warp and the weft. For this reason, when a tensile stress acts on the sheet surface in the warp or weft direction, a force in the shear direction acts on each yarn at the intersection, and the tensile strength of the reinforcing fiber yarn cannot be sufficiently exhibited.
【００１０】また、前記交差部では糸条の厚み寸法だけ
空隙部が形成されるため、そのような強化繊維からなる
織物にプリプレグのマトリックス樹脂を含浸させる際
に、同交差部ではその空隙部の分だけ樹脂リッチとなっ
たり、或いは、前記空隙部に樹脂が含浸されずボイドが
発生するといった不都合がある。このように空隙部で樹
脂リッチとなったりボイドが生じたプリプレグを使用し
て形成されたＦＲＰ製品も、同様に樹脂リッチの部位や
ボイドが存在することとなる。かかるＦＲＰに引張り応
力が作用した場合には、同応力が樹脂リッチの部位やボ
イドの部分に集中し、ＦＲＰの引張り強度が十分に発揮
されず、更にはそのときの剪断力によりＦＲＰが破壊さ
れる場合もある。Further, at the intersection, a void is formed by the thickness of the yarn. Therefore, when impregnating a prepreg matrix resin into a woven fabric made of such reinforcing fibers, the void is formed at the intersection at the intersection. There is an inconvenience that the resin becomes richer by the amount, or that voids are not impregnated with the resin and voids are generated. As described above, the FRP product formed by using the prepreg in which the resin becomes rich or voids are generated in the voids also has resin-rich portions and voids. When a tensile stress acts on such an FRP, the stress concentrates on a resin-rich portion or a void portion, whereby the tensile strength of the FRP is not sufficiently exhibited, and further, the FRP is broken by the shearing force at that time. In some cases.
【００１１】かかる不都合は強化繊維糸条として相対的
に高い番手の繊維からなる糸条を用いた場合に顕著とな
る。そのため、強化繊維糸条を織物としてプリプレグに
製造するには、特に繊維を開繊して均一にすることが重
要となる。この均一化は更に強度的な問題ばかりでな
く、ＦＲＰとして平滑な成形品を得るためにも必要不可
欠であり平滑性に欠けるＦＲＰは、その商品価値を損な
ってしまう。Such inconvenience becomes significant when a yarn composed of fibers having a relatively high count is used as the reinforcing fiber yarn. Therefore, in order to manufacture a reinforcing fiber yarn into a prepreg as a woven fabric, it is particularly important to open and uniform the fibers. This uniformization is not only a problem in terms of strength, but is also indispensable for obtaining a smooth molded product as FRP, and FRP lacking in smoothness impairs its commercial value.
【００１２】特に、一般のシャトル織機やレピヤ織機に
より、相対的に低い単位面積当たりの重量に対して、相
対的に高い番手の多数本の強化繊維を製織して得られた
織物では開口率が大きく、経糸と緯糸の交錯部で大きく
クリンプしている。そのため、繊維密度が不均一とな
り、平滑性に欠け、強度特性も十分に発揮されない。更
に、かかる目付けの低い強化繊維織物を用いて樹脂を含
浸させたＦＲＰでは、マトリックス樹脂中に存在するボ
イドが多くなり、また、樹脂リッチな部分もできるた
め、高い強度特性が期待できないという欠点があった。In particular, a woven fabric obtained by weaving a large number of reinforcing fibers of a relatively high count with respect to a relatively low weight per unit area by a general shuttle loom or a repiya loom has an opening ratio. Large, crimped heavily at the intersection of warp and weft. Therefore, the fiber density becomes non-uniform, the smoothness is lacking, and the strength properties are not sufficiently exhibited. Further, in the FRP impregnated with a resin by using such a low-weight reinforced fiber woven fabric, there are many voids present in the matrix resin, and a resin-rich portion can be formed, so that high strength properties cannot be expected. there were.
【００１３】そこで、従来から、経糸と緯糸との交差部
でのクリンプを小さくするために、強化繊維織物の構成
糸条を開繊する方法が提案されている。例えば、特開平
３―２０３３５号公報に開示された炭素繊維織物の開繊
装置では、水容器内に水没状態で超音波発振器を配し、
更に同発振器に水中で対向してガイド板を配している。
かかる開繊装置において、前記織物を前記ガイド板の発
振器対向面に沿わせて移送することにより、超音波で前
記織物を開繊させている。In order to reduce the crimp at the intersection between the warp and the weft, a method of opening the yarn constituting the reinforcing fiber woven fabric has been proposed. For example, in a carbon fiber woven fiber opening apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 3-20335, an ultrasonic oscillator is arranged in a water container in a submerged state,
Further, a guide plate is arranged facing the oscillator in water.
In this opening device, the woven fabric is opened by ultrasonic waves by transferring the woven fabric along the oscillator facing surface of the guide plate.
【００１４】更に、特開平７−１４５５５６号公報に開
示されている炭素繊維織物の開繊装置では、前記ガイド
板に変えて、２つの自由回転可能なローラに巻回された
金属ベルトを採用し、更に、前記織物を負荷装置により
一定の張力をかけながら移送し、上記公報と同様に超音
波により水中で開繊させている。Further, in the carbon fiber woven fiber opening apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 7-145556, a metal belt wound around two freely rotatable rollers is employed instead of the guide plate. Further, the woven fabric is transferred while applying a constant tension by a load device, and is opened in water by ultrasonic waves as in the above publication.
【００１５】また、例えば、特開平４―２８１０３７号
公報に開示されている炭素繊維織物の製造方法では、経
方向に走行している炭素繊維織物に、所定のノズルピッ
チで配された所定のノズル径をもつ複数個のノズル孔か
らウォータージェットを指向し、このウォータージェッ
トの打力により経糸及び緯糸を開繊して、拡幅・偏平化
している。Further, for example, in a method of manufacturing a carbon fiber woven fabric disclosed in Japanese Patent Application Laid-Open No. 4-281037, a predetermined nozzle pitch is arranged at a predetermined nozzle pitch on a carbon fiber woven fabric running in the warp direction. A water jet is directed from a plurality of nozzle holes having a diameter, and the warp and the weft are opened by the impact of the water jet to widen and flatten.
【００１６】[0016]
【発明が解決しようとする課題】しかしながら、上記特
開平３―２０３３５号公報及び特開平７−１４５５５６
号公報に開示された炭素繊維織物の開繊方法はいずれ
も、前記織物に水中で超音波を作用させており、また、
特開平４―２８１０３７号公報に開示された開繊方法に
あっても、前記織物をウォータージェットにより開繊さ
せているため、いずれの方法においても、前記織物を上
記方法により開繊した後に、同織物を乾燥しなければな
らない。そのため、炭素繊維織物の製造効率が低減する
ばかりでなく、炭素繊維織物の製造機は、前記開繊装置
の他にも織物の乾燥手段が必要となり、製造機の設置ス
ペースが大きくなるといった不都合も生じる。However, Japanese Patent Application Laid-Open Nos. Hei 3-20335 and Hei 7-145556 describe the above.
In any of the methods for opening carbon fiber woven fabric disclosed in Japanese Patent Application Publication, ultrasonic waves act on the woven fabric in water,
In the opening method disclosed in Japanese Patent Application Laid-Open No. 4-281037, the woven fabric is spread by a water jet. The fabric must be dried. Therefore, not only the manufacturing efficiency of the carbon fiber fabric is reduced, but also a manufacturing machine of the carbon fiber fabric requires a drying means for the fabric in addition to the fiber opening device, and the installation space of the manufacturing machine is disadvantageously increased. Occurs.
【００１７】本発明は、かかる問題点を解決すべくなさ
れたものであり、相対的に低い単位面積当たりの重量に
対して、相対的に高い番手の多数本の強化繊維からなる
強化繊維糸条を経糸及び緯糸として、同経糸及び緯糸が
均一に且つ十分に開繊された、高い強度特性を有する強
化繊維織物と、同織物を格別に複雑な機構や乾燥手段等
の別途の手段が不要な強化繊維織物の製造方法、並びに
設置スペースの小さな強化繊維織物の糸条開繊装置とを
提供することを目的としている。The present invention has been made in order to solve such a problem, and a reinforcing fiber yarn comprising a number of reinforcing fibers having a relatively high count with respect to a relatively low weight per unit area. As a warp and a weft, the warp and the weft are uniformly and sufficiently spread, and a reinforced fiber woven fabric having high strength characteristics, and the woven fabric requires no special means such as a complicated mechanism and a drying means. An object of the present invention is to provide a method for producing a reinforcing fiber woven fabric, and a yarn opening device for a reinforcing fiber woven fabric having a small installation space.
【００１８】[0018]
【課題を解決するための手段】上記目的を達成するた
め、本件請求項１に係る発明は、強化繊維糸条からなる
経糸及び緯糸により製織した後、開繊処理が施された強
化繊維織物であって、前記経糸及び緯糸の繊度が６００
〜２０，０００デニール、そのフィラメント数が１，０
００〜２４，０００本であり、開繊処理後の開口率が１
％以下であることを特徴としている。Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 of the present invention relates to a reinforced fiber woven fabric which is woven with a warp and a weft consisting of reinforced fiber yarns and then subjected to fiber opening treatment. The fineness of the warp and weft is 600
~ 20,000 denier, filament count is 1,0
100 to 24,000, and the opening ratio after the opening process is 1
% Or less.
【００１９】このように、繊度が６００〜２０，０００
デニール、フィラメント数が１，０００〜２４，０００
本である強化繊維糸条からなる織物であって、開口率が
１％以下になるまで開繊された織物は、経糸及び緯糸が
均一に且つ十分に開繊されており、繊維密度も均一で平
滑性に富んだ織物である。しかも経糸と緯糸との交差部
においてクリンプが小さく、かかる織物に樹脂を含浸さ
せた場合には、ボイドの発生もなく、樹脂リッチとなる
部分もないため、十分な強度特性が確保できる。As described above, the fineness is 600 to 20,000.
Denier, number of filaments is 1,000-24,000
The woven fabric composed of the reinforcing fiber yarns, which is a book, which has been opened until the opening ratio becomes 1% or less, the warp and the weft are uniformly and sufficiently spread, and the fiber density is also uniform. It is a highly woven fabric. Moreover, the crimp is small at the intersection between the warp and the weft, and when such a woven fabric is impregnated with a resin, no void is generated and there is no resin-rich portion, so that sufficient strength characteristics can be secured.
【００２０】なお、前記強化繊維糸条が炭素繊維糸条で
ある場合に、特に前記糸条は繊度が６００〜２０，００
０デニール、フィラメント数が１，０００〜２４，００
０本の範囲であることが好ましい。更に、前記糸条は繊
度が６００〜８，０００デニール、フィラメント数が
１，０００〜１２，０００本の範囲であることが好まし
い。When the reinforcing fiber yarn is a carbon fiber yarn, particularly, the yarn has a fineness of 600 to 20,000.
0 denier, filament number 1,000-24,000
It is preferable that the number be in the range of zero. Further, the yarn preferably has a fineness of 600 to 8,000 denier and a number of filaments of 1,000 to 12,000.
【００２１】更に、織物の組織は特に限定されるもので
はないが、平織り組織が最も好ましい。そして通常は経
糸及び緯糸としてフィラメント数及び繊度が等しい織糸
を使用するが、繊度の異なる経糸と緯糸を使用してもよ
い。Further, the structure of the woven fabric is not particularly limited, but a plain weave structure is most preferable. Usually, a woven yarn having the same number of filaments and the same fineness is used as the warp and the weft, but a warp and a weft having different finenesses may be used.
【００２２】本件請求項２に係る発明によれば、前記強
化繊維糸条は実質的に撚りが無く、織物目付けが８０〜
１００ｇ/ ｍ2 である。織物目付けが８０〜１００ｇ/
ｍ2と小さい強化繊維織物にあって、開口率が１％以下
であれば、前記織物は極めて薄く形成され、しかも経方
向及び緯方向のフィラメント間の間隙が殆どない均整に
分布されており、プリプレグ用の強化繊維織物として極
めて高品質なものである。このように、プリプレグ用の
強化繊維織物としては、前記織物目付けは８０〜１００
ｇ/ ｍ2 であることが望ましいが、開繊効果に関してみ
れば、織物目付けが１００ｇ／ｍ2 以上であっても何ら
問題はない。なお、炭素繊維糸条の引張強度は３００〜
７００ｋｇ／ｍｍ2 、弾性率は２０〜５０×１０3 ｋｇ
／mm2 、サイジング剤付着量は、０．４〜２ｗｔ％の範
囲であることが好ましい。According to the second aspect of the present invention, the reinforcing fiber yarn has substantially no twist and has a fabric weight of 80 to 80%.
100 g / m 2 . Fabric weight is 80-100g /
When the opening ratio is 1% or less in a reinforcing fiber fabric as small as m 2 , the fabric is formed to be extremely thin, and is evenly distributed with almost no gap between filaments in the warp and weft directions. It is an extremely high quality reinforced fiber fabric for prepreg. Thus, as a reinforcing fiber fabric for prepreg, the fabric weight is 80 to 100.
g / m 2 is desirable, but there is no problem regarding the opening effect even if the fabric weight is 100 g / m 2 or more. The tensile strength of the carbon fiber yarn is 300 to
700 kg / mm 2 , elastic modulus is 20-50 × 10 3 kg
/ Mm 2 , and the sizing agent adhesion amount is preferably in the range of 0.4 to 2 wt%.
【００２３】上述した強化繊維織物を製造するために、
本件請求項３に係る発明は、経糸及び緯糸が強化繊維糸
条からなる強化繊維織物の製造方法であって、製織され
た強化繊維織物を加熱し、同織物に付着しているサイジ
ング剤の粘度を１０ｐｏｉｓｅ以下とすること、及び前
記強化繊維織物を、鋼板と同鋼板に対向して配された叩
打手段との間を走行させると共に、前記叩打手段を前記
鋼板に対して直交方向に振動させて前記織物を前記鋼板
と前記叩打手段との間で叩打することにより強化繊維糸
条を開繊させる工程を含んでなることを特徴としてい
る。In order to produce the above-mentioned reinforcing fiber woven fabric,
The invention according to claim 3 is a method for producing a reinforced fiber woven fabric in which the warp and the weft are reinforced fiber yarns, wherein the woven reinforced fiber woven fabric is heated, and the viscosity of the sizing agent adhered to the woven fabric is increased. To 10 poise or less, and while running the reinforcing fiber woven fabric between the steel sheet and the tapping means arranged opposite to the steel sheet, vibrating the tapping means in a direction orthogonal to the steel sheet A step of tapping the woven fabric between the steel plate and the tapping means to open the reinforcing fiber yarn.
【００２４】一般に、強化繊維糸条はサイジング剤によ
ってフィラメント間が相互に結合された状態となってい
るが、本発明の製造方法によれば、強化繊維糸条から製
織された強化繊維織物を加熱し、同織物に付着している
サイジング剤の粘度を１０ｐｏｉｓｅ以下として、同サ
イジング剤によるフィラメント間の結合を弱めた状態
で、その平面に対して直交方向に振動する叩打手段によ
り叩打するため、各糸条は十分に開繊される。In general, the reinforcing fiber yarn is in a state where the filaments are mutually connected by a sizing agent. However, according to the production method of the present invention, the reinforcing fiber woven fabric woven from the reinforcing fiber yarn is heated. Then, the viscosity of the sizing agent adhering to the fabric is set to 10 poise or less, and in a state where the bonding between the filaments by the sizing agent is weakened, the sizing agent is beaten by a beating means vibrating in a direction perpendicular to the plane. The yarn is fully opened.
【００２５】また、かかる機械的な開繊方法では、従来
の超音波を利用した開繊方法や、ウォータージェットに
よる開繊方法のように、前記織物が水に濡れることもな
いため、乾燥等の開繊とは別途の処理が不要となり、開
繊効率も著しく向上すると共に、製造装置もコンパクト
なものとなる。Further, in such a mechanical fiber opening method, unlike the conventional fiber opening method using ultrasonic waves and the water fiber jet opening method, the woven fabric does not get wet with water, so that drying or the like can be performed. Separation processing is not required, and the opening efficiency is significantly improved, and the manufacturing apparatus is compact.
【００２６】なお、本発明では、サイジング剤の粘度を
１０ｐｏｉｓｅ以下とするため、前記サイジング剤によ
ってフィラメント間が相互に結合された強化繊維糸条か
らなる強化繊維織物を、加熱手段をもって積極的に加熱
している。前記鋼板と前記叩打手段との間で叩打される
際に軟化していたサイジング剤は、その後、再び固化し
て、糸条の安定した開繊形態並びに織物形態を維持させ
る。In the present invention, in order to reduce the viscosity of the sizing agent to 10 poise or less, the reinforcing fiber woven fabric composed of the reinforcing fiber yarns in which the filaments are mutually connected by the sizing agent is heated positively by a heating means. are doing. The sizing agent, which has been softened when it is beaten between the steel plate and the beating means, is then solidified again to maintain a stable spread form and a woven form of the yarn.
【００２７】織物の加熱温度はサイジング剤の種類によ
って異なるが、強化繊維糸条への熱的影響も考慮し、約
８０〜１８０℃に加熱することが好ましい。更に、サイ
ジング剤の粘度は１０ｐｏｉｓｅ以下とすることがより
好ましい。前記強化繊維織物の糸条が１８０℃よりも高
い温度に加熱された場合は、サイジング剤が軟化してフ
ィラメント間の結合力が弱まり開繊をしやすくするが、
小さな力でも織物に毛羽が発生しやすくなり、十分な開
繊を実現するに必要な力がかけられない。なお、この強
化繊維織物の加熱方法は、赤外線加熱、熱風加熱、或い
はヒーター加熱など、いずれの加熱方法あっても良い。The heating temperature of the woven fabric varies depending on the type of the sizing agent, but it is preferable to heat the woven fabric to about 80 to 180 ° C. in consideration of the thermal effect on the reinforcing fiber yarn. Further, the viscosity of the sizing agent is more preferably 10 poise or less. When the yarn of the reinforcing fiber woven fabric is heated to a temperature higher than 180 ° C., the sizing agent is softened and the bonding force between the filaments is weakened to facilitate opening,
Even with a small force, fluff is liable to be generated on the woven fabric, and the force required to realize sufficient opening cannot be applied. The heating method of the reinforcing fiber fabric may be any heating method such as infrared heating, hot air heating, or heater heating.
【００２８】また、本発明の強化繊維織物の製造方法に
おける特徴部をなす強化繊維糸条を開繊させる工程は、
強化繊維織物を製織する一連の製織工程の途中、例えば
最終的に巻き取る直前に行っても良く、或いは、製織済
みの織物を巻き返す工程において、同時に行うこともで
きる。In the method for producing a reinforced fiber woven fabric according to the present invention, the step of opening the reinforced fiber yarn, which is a characteristic part, comprises:
It may be carried out during a series of weaving steps for weaving the reinforcing fiber woven fabric, for example, immediately before final winding, or may be carried out simultaneously in the step of rewinding the woven fabric.
【００２９】本件請求項４に係る発明では、前記叩打手
段による加振力を１．２〜７Ｇに設定することを含んで
いる。加振力が７Ｇよりも大きい場合には、開繊に必要
な力は得られるが、加振力が大きすぎると織物に毛羽が
発生しやすくなる。その場合には、強化繊維織物の走行
速度を上げて、単位面積当たりの前記叩打手段による叩
打回数を減らすことにより毛羽の発生は抑えることもで
きるが、開繊が不均一となるために好ましくない。ま
た、加振力が１．２Ｇよりも小さい場合は、開繊に必要
な力が得られず十分に開繊されない。The invention according to claim 4 of the present application includes setting the exciting force by the tapping means to 1.2 to 7G. When the excitation force is greater than 7G, the force required for fiber opening can be obtained, but when the excitation force is too large, fluff is likely to occur in the fabric. In that case, the generation of fluff can be suppressed by increasing the running speed of the reinforcing fiber woven fabric and reducing the number of hits by the hitting means per unit area, but it is not preferable because the spreading becomes uneven. . On the other hand, if the excitation force is smaller than 1.2 G, the force required for fiber opening cannot be obtained, and the fiber cannot be sufficiently opened.
【００３０】前記強化繊維織物のサイジング剤の粘度が
１０ｐｏｉｓｅよりも大きい場合、例えば糸条の温度が
８０℃よりも低い場合は、十分に開繊させるために加振
力を７Ｇよりも大きくする必要があるが、加振力を７Ｇ
よりも大きくした場合、織物に毛羽が発生しやすくな
る。そのため、前記強化繊維織物のサイジング剤の粘度
を１０ｐｏｉｓｅ以下にし、加振力を７Ｇ以下にするこ
とが好ましい。When the viscosity of the sizing agent of the reinforcing fiber woven fabric is higher than 10 poise, for example, when the temperature of the yarn is lower than 80 ° C., the vibrating force needs to be higher than 7 G to sufficiently open the fiber. But the excitation force is 7G
If it is larger than this, fluff is likely to occur in the woven fabric. Therefore, it is preferable that the viscosity of the sizing agent of the reinforcing fiber fabric be 10 poise or less, and the vibrating force be 7 G or less.
【００３１】本件請求項５に係る発明では、強化繊維糸
条を開繊させる工程における前記強化繊維織物の走行速
度を０．５〜４．０ｍ／分に設定することを含んでい
る。サイジング剤の粘度及び加振力を上述の範囲とする
場合、更には前記叩打部材の寸法を後述する範囲に設定
する場合に、前記織物の走行速度が０．５ｍ／分よりも
遅い場合には、叩打部材の織物の単位面積当たりの衝突
回数が多すぎるため、織物に毛羽が発生しやすくなる。
また、走行速度を４ｍ／分以上とする場合には、叩打部
材の織物の単位面積当たりの衝突回数が少なくなるため
十分に開繊が行われない。The invention according to claim 5 of the present application includes setting the running speed of the reinforcing fiber woven fabric in the step of opening the reinforcing fiber yarns to 0.5 to 4.0 m / min. When the viscosity and the vibrating force of the sizing agent are in the above ranges, and further, when the dimensions of the hitting member are set in the range described later, when the running speed of the woven fabric is lower than 0.5 m / min, Since the number of collisions of the tapping member per unit area of the woven fabric is too large, fluff is likely to be generated in the woven fabric.
When the traveling speed is 4 m / min or more, the number of collisions of the tapping member per unit area of the woven fabric is reduced, so that the fiber is not sufficiently opened.
【００３２】更に、上述した本発明の強化繊維織物の製
造方法により上述した本発明の強化繊維織物を製造する
にあたって、本件請求項６に係る発明による強化繊維織
物の糸条開繊装置を採用することが好ましい。即ち、本
件請求項６に係る発明は、経糸及び緯糸が強化繊維糸条
からなる強化繊維織物の糸条開繊装置であって、鋼板
と、前記鋼板に平行な前記織物の走行路を挟んだ平面内
に配された叩打手段と、前記叩打手段を前記鋼板に対し
て直交方向に振動させる加振源と、前記強化繊維織物を
加熱する加熱手段とを備えてなることを特徴としてい
る。Further, in producing the above-described reinforcing fiber woven fabric of the present invention by the above-mentioned method for producing a reinforcing fiber woven fabric of the present invention, the reinforcing fiber woven fabric opening apparatus according to the sixth aspect of the present invention is employed. Is preferred. That is, the invention according to claim 6 of the present invention is a yarn opening device for a reinforced fiber woven fabric in which the warp and the weft are reinforced fiber yarns, and sandwiches a steel plate and a running path of the woven fabric parallel to the steel plate. It is characterized by comprising a tapping means arranged in a plane, a vibration source for causing the tapping means to vibrate in a direction perpendicular to the steel plate, and a heating means for heating the reinforcing fiber fabric.
【００３３】前記叩打手段は、単一の平板表面に半球状
又は柱状の突起が複数突設された単一の部材を採用する
ことができる。或いは、本件請求項７に係る発明では、
前記叩打手段は複数の球体、円柱又は１以上の平面を持
つ複数のブロック体からなる叩打部材と、それらの叩打
部材を支持する振動テーブルとを備え、前記叩打部材は
前記鋼鈑の表面に対して自由回転が可能に前記振動テー
ブルにより支持されている。The hitting means may employ a single member having a plurality of hemispherical or columnar projections projecting from a single flat plate surface. Alternatively, in the invention according to claim 7,
The striking means includes a striking member composed of a plurality of spheres, cylinders, or a plurality of blocks having one or more planes, and a vibration table that supports the striking members, wherein the striking member is disposed on a surface of the steel plate. And supported by the vibration table so as to be freely rotatable.
【００３４】前記振動テーブルは加振源により振動が与
えられ、同振動テーブルの表面に配された複数の叩打部
材は、ホルダーによりその一部を同ホルダーから露出さ
せて支持されていることが好ましい。Preferably, the vibration table is vibrated by a vibration source, and a plurality of tapping members arranged on the surface of the vibration table are supported by a holder with a part thereof exposed from the holder. .
【００３５】前記叩打部材は、鋼鈑に対して直交方向に
振動させると同時に自由回転可能に配することが好まし
い。この場合、叩打部材はその表面に接触している前記
織物の走行に応じて回転するため、前記織物には過剰の
摩擦力が作用することがなく、織物の損傷を低減させ
る。It is preferable that the tapping member is arranged so as to vibrate in a direction perpendicular to the steel plate and to be freely rotatable at the same time. In this case, since the beating member rotates in accordance with the travel of the fabric in contact with its surface, excessive frictional force does not act on the fabric, thereby reducing damage to the fabric.
【００３６】なお、前記叩打部材が球体であるには、そ
の直径を４〜８ｍｍとすることが好ましい。或いは、前
記叩打部材が複数の円柱である場合には円柱の端面の最
大径を４〜８ｍｍとし、また、前記叩打部材が１以上の
平面を持つ複数のブロック体、例えば多面体や角柱から
なる場合には、最大寸法を４〜８ｍｍとすることが好ま
しい。It is preferable that the diameter of the hitting member is 4 to 8 mm so that the hitting member is a sphere. Alternatively, when the hitting member is a plurality of cylinders, the maximum diameter of the end face of the cylinder is 4 to 8 mm, and the hitting member is formed of a plurality of blocks having one or more planes, for example, a polyhedron or a prism. Preferably has a maximum dimension of 4 to 8 mm.
【００３７】更には、一の振動テーブルに配列されてい
る複数の前記叩打部材は全て同一形態であってもよく、
或いは、直径の異なる球体や円柱、最大寸法の異なる多
面体を混在させて配することもできる。Further, all of the plurality of hitting members arranged on one vibration table may have the same form.
Alternatively, spheres and cylinders having different diameters and polyhedrons having different maximum dimensions can be mixed and arranged.
【００３８】前記叩打部材の大きさが８ｍｍより大きい
場合は、叩打部材の配列ピッチが大きくなるため、織物
に対する叩打部材の衝突間隔が大きくなり、開繊が十分
に行われない。また、前記叩打部材が４ｍｍよりも小さ
い場合は、叩打部材の重量も小さくなり、加振力を加え
ても開繊に必要な叩打力が得られず開繊が十分に行われ
ない。If the size of the tapping member is larger than 8 mm, the arrangement pitch of the tapping members becomes large, so that the collision interval of the tapping member with the woven fabric becomes large and the fiber is not sufficiently opened. If the tapping member is smaller than 4 mm, the weight of the tapping member is also small, and the tapping force required for opening the fiber cannot be obtained even when a vibrating force is applied.
【００３９】前記叩打部材は、所定の平面内にできるだ
け多く配列することが好ましい。従って、横方向に配列
された叩打部材の中心を結ぶ直線をＸとし、縦方向に配
列された叩打部材の中心を結ぶ直線をＹとした場合、直
線Ｘに対して直線Ｙを直交方向から傾斜角度θだけ傾斜
させて前記叩打部材を配列することが好ましい。前記傾
斜角度θは、１〜６０°の範囲であることが好ましい。
特に、叩打部材の間隔は、経糸のピッチと等しい又はそ
れ以下とすることが好ましい。更に、前記傾斜角度θを
３０°とした千鳥配列であることが好ましい。It is preferable that the hitting members are arranged as many as possible within a predetermined plane. Therefore, when a straight line connecting the centers of the striking members arranged in the horizontal direction is X and a straight line connecting the centers of the striking members arranged in the vertical direction is Y, the straight line Y is inclined from the orthogonal direction with respect to the straight line X. It is preferable that the hitting members are arranged at an angle θ. Is preferably in the range of 1 to 60 degrees.
In particular, the interval between the tapping members is preferably equal to or less than the pitch of the warp. Further, it is preferable to form a staggered arrangement in which the inclination angle θ is 30 °.
【００４０】[0040]
【発明の実施形態】以下、本発明の好適な実施形態につ
いて具体的に説明する。図１は、本発明の強化繊維織物
の製造方法により強化繊維織物を開繊するに適した、強
化繊維織物の製造機の概略を示す側面図であり、図２は
同製造機の一部を概略的に示す斜視図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below. FIG. 1 is a side view schematically showing a reinforced fiber woven fabric manufacturing machine suitable for opening a reinforced fiber woven fabric according to the reinforced fiber woven fabric manufacturing method of the present invention, and FIG. It is a perspective view shown roughly.
【００４１】前記強化繊維織物の製造機１０は、製織さ
れた強化繊維織物Ｗをクリール１１から、ニップロール
１２により織物Ｗの張力を調整しながら引き出し、巻き
取り部１３により最終的な製品ロールとして巻き取られ
る途中に、本発明の好適な実施形態による糸条開繊装置
１が配されている。The reinforced fiber woven fabric manufacturing machine 10 pulls out the woven reinforced fiber woven fabric W from the creel 11 while adjusting the tension of the woven fabric W by the nip roll 12, and winds it as the final product roll by the winding unit 13. Along the way, the yarn opening device 1 according to the preferred embodiment of the present invention is arranged.
【００４２】前記糸条開繊装置１は 鋼板２と、同鋼鈑
２の下方に強化繊維織物Ｗの走行路を挟んで配された叩
打手段と、前記叩打手段を前記鋼板２に対して直交方向
に振動させる加振源５と、前記強化繊維織物を加熱する
加熱手段とを備えている。本実施形態では、前記加熱手
段として、ハウジング６と同ハウジング６内の空気を加
熱するヒータとを備えており、前記開繊手段は前記ハウ
ジング６内に設置されている。The yarn opening device 1 comprises a steel plate 2, a tapping means disposed below the steel plate 2 with a running path of the reinforcing fiber woven fabric W interposed therebetween, and the tapping means being perpendicular to the steel plate 2. A vibration source 5 for vibrating in the direction is provided, and a heating means for heating the reinforcing fiber fabric is provided. In the present embodiment, the heating means includes a housing 6 and a heater for heating air in the housing 6, and the fiber opening means is installed in the housing 6.
【００４３】前記叩打手段は、前記鋼鈑２と平行に配さ
れた振動テーブル４と、同振動テーブル４の上面に配さ
れた、本発明の叩打部材である複数の鋼球３と、同鋼球
３を保持するホルダー７とを備えている。同ホルダー７
は複数の孔部７ａが形成され、前記鋼球３は前記孔部７
ａから一部を露出させた状態で、同ホルダー７により回
転自在に支持されている。この鋼球３は、例えば図３
（ａ）に示すように、横方向に配列された鋼球３の中心
を結ぶ直線Ｘに対して、縦方向に配列された鋼球３の中
心を結ぶ直線Ｙを直交方向から傾斜角度θをもって傾斜
させて配列することが好ましい。特に、図３（ｂ）に示
すように前記傾斜角度θを３０°として千鳥配列させる
ことが好ましい。また、前記鋼球３は、ホルダー７に複
数個又は単数のグループとして配列することが好まし
い。The striking means includes: a vibrating table 4 arranged in parallel with the steel plate 2; a plurality of steel balls 3, which are striking members of the present invention, arranged on the upper surface of the vibrating table 4; And a holder 7 for holding the ball 3. Holder 7
Is formed with a plurality of holes 7a, and the steel ball 3 is provided with the holes 7a.
The holder 7 is rotatably supported by the holder 7 in a state where a part thereof is exposed. This steel ball 3 is, for example, as shown in FIG.
As shown in (a), a straight line Y connecting the centers of the steel balls 3 arranged in the vertical direction with respect to a straight line X connecting the centers of the steel balls 3 arranged in the horizontal direction has an inclination angle θ from the orthogonal direction. It is preferable to arrange them inclining. In particular, as shown in FIG. 3B, it is preferable that the inclination angle θ is 30 ° and the staggered arrangement is performed. Preferably, the steel balls 3 are arranged in the holder 7 as a plurality or a single group.
【００４４】なお、図１に示す強化繊維織物の製造機１
０では、製織された強化繊維織物Ｗをクリール１１から
ニップロール１２により織物Ｗの張力を調整しながら引
き出し、前記糸条開繊装置１により開繊処理を施すが、
この糸条開繊装置１の下流側に前記ニップロール１２を
配しているため、前記開繊装置１を通った強化繊維織物
Ｗの開繊形態を前記ニップロール１２により保持するこ
とができる。The reinforcing fiber woven fabric manufacturing machine 1 shown in FIG.
At 0, the woven reinforcing fiber woven fabric W is pulled out from the creel 11 while adjusting the tension of the woven fabric W by the nip roll 12, and subjected to the opening process by the yarn opening device 1.
Since the nip roll 12 is disposed downstream of the yarn opening device 1, the opening state of the reinforcing fiber woven fabric W that has passed through the opening device 1 can be held by the nip roll 12.
【００４５】また、前記糸条開繊装置１の設置場所は、
上述のように製織済みの織物を巻き返す際の工程の途中
以外にも、強化繊維織物の製織機における、巻き取り工
程の直前位置に設置することもできる。The installation location of the yarn opening device 1 is as follows.
As described above, other than during the process of rewinding the woven fabric, the woven fabric can be installed at a position immediately before the winding process in a weaving machine for reinforcing fiber woven fabric.
【００４６】以下、本発明の強化繊維織物の製造方法に
ついて、実施例を挙げて比較例と比較して説明する。以
下の実施例及び比較例については、強化繊維糸条とし
て、繊度が１，８００デニール、フィラメント数が３，
０００本であり、糸幅が２ｍｍ、引張強度が３６０ｋｇ
／ｍｍ2 、弾性率が２４×１０3 ｋｇ／ｃｍ2 、サイジ
ング剤（エポキシ樹脂８０部、硬化ひまし油２０部で組
成されているものを使用）付着量が１．２ｗｔ％である
炭素繊維糸条（三菱レイヨン（株）パイロフィルＴＲ３
０Ｓ―３Ｋ）を使用した。Hereinafter, the method for producing a reinforcing fiber woven fabric of the present invention will be described with reference to Examples and Comparative Examples. About the following Examples and Comparative Examples, as the reinforcing fiber yarn, the fineness is 1,800 denier, the number of filaments is 3,
000 yarns, yarn width 2mm, tensile strength 360kg
/ Mm 2 , a modulus of elasticity of 24 × 10 3 kg / cm 2 , a sizing agent (comprising 80 parts of epoxy resin and 20 parts of hardened castor oil), and a carbon fiber yarn having an adhesion amount of 1.2 wt% (Mitsubishi Rayon Co., Ltd. Pyrofil TR3
0S-3K) was used.
【００４７】この炭素繊維糸条を織機により、経糸及び
緯糸の密度を６本／ｉｎｃｈとし、織物の目付けを９５
ｇ／ｍ2 として平織り組織により製織して得られた織物
を巻き取って図１に示す強化繊維織物の製造機を使用
し、以下の条件で開繊処理を施した。The density of the warp and the weft is set to 6 yarns / inch by using a loom, and the basis weight of the woven fabric is set to 95.
The woven fabric obtained by weaving with a plain weave structure at g / m 2 was wound up and subjected to a fiber opening treatment under the following conditions using a reinforcing fiber woven fabric manufacturing machine shown in FIG.
【００４８】各実施例及び比較例について開繊された織
物の毛羽の発生具合についての有無を目視検査により評
価した。更に、開繊された織物において１００ｍｍ×１
００ｍｍを単位面積当たりの同単位面積内での経糸又は
緯糸のいずれかが存在しない開口部の面積比率を開口率
として評価を行った。なお、開口率の評価には、市販の
画像センサー（（株）キーエンス製、ＣＶ―１００）を
使用した。For each of the examples and comparative examples, the presence or absence of the generation of fluff of the opened fabric was evaluated by visual inspection. Furthermore, in the opened woven fabric, 100 mm × 1
The evaluation was made with the area ratio of the opening having no warp or weft in the same unit area per unit area of 00 mm as the opening ratio. For evaluation of the aperture ratio, a commercially available image sensor (CV-100, manufactured by KEYENCE CORPORATION) was used.
【００４９】更に、開繊された織物にエポキシ樹脂を４
３重量％となるように含浸させ、３枚に積層してＦＲＰ
板を製造し、同ＦＲＰ板のボイドの発生具合を目視検査
により観察した。Further, epoxy resin was added to the opened woven fabric.
Impregnated to 3% by weight, laminated into 3 sheets and FRP
A plate was manufactured, and the degree of void generation of the FRP plate was observed by visual inspection.
【００５０】（実施例１）上記糸条開繊装置１として、
振動テーブル４上に、直径８ｍｍの鋼球３を図３（ａ）
に示す傾斜角度θを５°として配列にした装置を用い
た。前記振動テーブル４の加振力を７Ｇとし、巻取速
度、即ち、前記糸条開繊装置１を通過する際の織物の走
行速度を４．０ｍ／分に設定して、織物を８０℃で加熱
しながら開繊処理を施した。糸条が開繊された強化繊維
織物は、毛羽が無く、良好な外観を呈するものであっ
た。また、開口率は０．８％と少なく糸条が十分に開繊
されていた。かかる強化繊維織物を含有するプリプレグ
はボイドのない良好なものであった。(Example 1) As the yarn opening device 1 described above,
A steel ball 3 having a diameter of 8 mm is placed on a vibration table 4 as shown in FIG.
A device in which the inclination angle θ shown in FIG. The vibration force of the vibrating table 4 is set to 7 G, the winding speed, that is, the running speed of the woven fabric when passing through the yarn opening device 1 is set to 4.0 m / min. An opening process was performed while heating. The reinforced fiber woven fabric from which the yarn was opened had no fluff and had a good appearance. Further, the opening ratio was as low as 0.8%, and the yarn was sufficiently opened. The prepreg containing such a reinforcing fiber fabric was good without voids.
【００５１】（実施例２）上記製造装置の糸条開繊装置
１として、直径が６ｍｍの鋼球を用いた以外は実施例１
と同様の装置を使用し、前記振動テーブル４の加振力を
５Ｇとし、巻取速度を３．０ｍ／分として１００℃に加
熱して開繊処理を施した。実施例２では叩打部材である
鋼球が実施例１よりも小径であるため同鋼球の重量が小
さく、鋼球一個当たりの叩打力は小さいものの、巻取速
度を実施例１よりも遅く設定することにより叩打回数を
多くすると共に、加熱温度を高くしてサイジング剤粘度
を下げることによりフィラメント間の結合力を弱めた状
態にしているため、得られた織物の開口率は、０．９％
であり糸条の開繊が十分になされていた。また、毛羽の
発生も無く、良好な外観を呈していた。更にこの強化繊
維織物を含有するプリプレグはボイドのない良好なもの
であった。(Example 2) Example 1 was adopted except that a steel ball having a diameter of 6 mm was used as the yarn opening device 1 of the above-mentioned manufacturing apparatus.
Using the same apparatus as that described above, the vibration force of the vibration table 4 was set to 5 G, the winding speed was set to 3.0 m / min, and heating was performed at 100 ° C. to perform the fiber opening treatment. In the second embodiment, since the steel ball as the hitting member has a smaller diameter than that of the first embodiment, the weight of the steel ball is small and the hitting force per steel ball is small, but the winding speed is set to be lower than that of the first embodiment. In addition to increasing the number of beatings, the heating temperature is increased and the sizing agent viscosity is decreased to reduce the bonding force between filaments. Therefore, the opening ratio of the obtained woven fabric is 0.9%.
The yarn had been sufficiently opened. Further, there was no generation of fluff, and the appearance was good. Furthermore, the prepreg containing the reinforcing fiber fabric was good without voids.
【００５２】（実施例３）上記製造装置の糸条開繊装置
１として、直径が５ｍｍの鋼球を用いた以外は実施例１
と同一の装置を使用し、前記振動テーブル４の加振力を
２Ｇとし、巻取速度を１. ５ｍ／分として１２０℃で加
熱しながら開繊処理を施した。同実施例３では加振力を
実施例２より小さくしているが、巻取速度を実施例２よ
りも遅くして叩打回数を多くし、さらに加熱温度を上げ
ることによりフィラメント間の結合力を弱めた状態にし
ているため、得られた織物の開口率は、０．５％と極め
て小さく、糸条の開繊が十分になされていた。また、毛
羽の発生も無く、良好な外観を呈していた。かかる強化
繊維織物を含有するプリプレグにはボイドの発生は認め
られなかった。(Example 3) Example 1 was adopted except that a steel ball having a diameter of 5 mm was used as the yarn opening device 1 of the above-mentioned manufacturing apparatus.
Using the same apparatus as described above, the fiber-spreading process was performed while heating at 120 ° C. with the exciting force of the vibration table 4 set to 2 G and the winding speed at 1.5 m / min. In the third embodiment, the exciting force is smaller than that of the second embodiment. However, the winding speed is made slower than that of the second embodiment, the number of hits is increased, and the heating temperature is further increased to reduce the bonding force between the filaments. Since the fabric was in a weakened state, the opening ratio of the obtained woven fabric was extremely small at 0.5%, and the yarn was sufficiently opened. Further, there was no generation of fluff, and the appearance was good. No voids were observed in the prepreg containing such a reinforcing fiber woven fabric.
【００５３】（実施例４）上記製造装置の糸条開繊装置
１として、直径が４ｍｍの鋼球を用いた以外は実施例１
と同様の装置を使用し、前記振動テーブル４の加振力を
１．２Ｇとし、巻取速度を１．０ｍ／分として１７０℃
で加熱しながら開繊処理を施した。(Example 4) Example 1 was adopted except that a steel ball having a diameter of 4 mm was used as the yarn opening device 1 of the above-mentioned manufacturing apparatus.
Using the same apparatus as that described above, the vibration force of the vibration table 4 was set to 1.2 G, the winding speed was set to 1.0 m / min, and 170 ° C.
The fiber was opened while heating with.
【００５４】同実施例４では叩打部材である鋼球が実施
例３よりも小径であるため同鋼球の重量が小さく、鋼球
一個当たりの叩打力は小さいものの、巻取速度を実施例
３よりも遅くして叩打回数を多くし、さらに加熱温度を
上げることにより、フィラメント間の結合力を弱めた状
態にしているため、得られた織物は開口率０．７％と実
施例３とほぼ同様に糸条の開繊がなされていた。また、
毛羽の発生も無く、良好な外観を呈していた。更に、か
かる強化繊維織物を含有するプリプレグにはボイドの発
生は認められなかった。In the fourth embodiment, since the steel ball serving as a hitting member has a smaller diameter than that of the third embodiment, the weight of the steel ball is small and the hitting force per steel ball is small, but the winding speed is low. By increasing the number of tappings later, and further increasing the heating temperature, the bonding force between the filaments is reduced, so that the obtained woven fabric has an opening ratio of 0.7%, which is almost the same as that of Example 3. Similarly, the yarn was opened. Also,
There was no generation of fluff, and the appearance was good. Further, no void was observed in the prepreg containing such a reinforcing fiber woven fabric.
【００５５】（比較例１）上記製造装置の糸条開繊装置
１として、前記織物の加熱温度を６０℃とした以外は、
実施例１と同一の条件により開繊処理を施した。得られ
た織物は、毛羽の発生は見られないものの、加熱温度が
低くサイジング剤が軟化せず、フィラメント間が同サイ
ジングにより結合された状態であったため、開口率が
３．１％と極めて大きく開繊が不十分であった。そのた
め、経糸と緯糸との交差部において厚みが大きくなり、
得られたプリプレグは前記交差部でボイドが認められ
た。(Comparative Example 1) As the yarn opening device 1 of the above manufacturing apparatus, except that the heating temperature of the woven fabric was set to 60 ° C.
The fiber opening treatment was performed under the same conditions as in Example 1. Although the resulting woven fabric did not show any fluff, the heating temperature was low and the sizing agent was not softened, and the filaments were connected by the same sizing. Therefore, the opening ratio was as large as 3.1%. Opening was insufficient. Therefore, the thickness increases at the intersection of the warp and the weft,
In the obtained prepreg, voids were observed at the intersections.
【００５６】（比較例２）上記製造装置の糸条開繊装置
１として、前記振動テーブル４の加振力を９Ｇとする以
外は、実施例１と同の条件により開繊処理を施した。加
振力が９Ｇと大きいため織物への叩打力も大きすぎ、得
られた織物の開口率は２. ６％で開繊は不十分であっ
た。しかも、叩打力が大きいため毛羽が多く発生し補強
用の織物として十分機能を呈することができないものと
なった。また、得られたプリプレグにはボイドが認めら
れた。(Comparative Example 2) The yarn opening device 1 of the above-mentioned manufacturing apparatus was subjected to the opening process under the same conditions as in Example 1 except that the vibration table 4 was applied with an exciting force of 9G. Since the vibrating force was as large as 9 G, the tapping force against the woven fabric was too large, and the opening ratio of the obtained woven fabric was 2.6%, and the spread was insufficient. In addition, since the tapping force is large, a large amount of fluff is generated, and the fabric cannot sufficiently function as a reinforcing fabric. In addition, voids were observed in the obtained prepreg.
【００５７】（比較例３）加熱温度を２００℃に加熱し
て開繊する以外は、実施例４と同一の装置を用いて同一
の条件により開繊処理を施した。加熱温度を実施例４よ
りも高く設定することで、サイジング剤を軟化させフィ
ラメント間の結合力が弱まった状態であったが、小さな
叩打力でも織物に毛羽が発生した。得られた織物の開口
率は１．２％であったが、毛羽が多く発生し補強用の織
物として不十分であった。また、得られたプリプレグに
はボイドが認められた。(Comparative Example 3) A fiber opening treatment was performed using the same apparatus as in Example 4 under the same conditions except that the fiber was heated and heated to 200 ° C. By setting the heating temperature higher than that in Example 4, the sizing agent was softened and the bonding force between filaments was weakened, but fluff was generated in the woven fabric even with a small tapping force. Although the opening ratio of the obtained woven fabric was 1.2%, a lot of fluff was generated and the woven fabric was insufficient as a reinforcing woven fabric. In addition, voids were observed in the obtained prepreg.
【００５８】（比較例４）巻取速度を０．３ｍ／分とし
て開繊する以外は、実施例４と同一の装置を用いて同一
の条件により開繊処理を施した。巻取速度を実施例４よ
りも遅く設定することで叩打回数を多くしているため、
得られた織物の開口率は０．１％と開繊は十分であっ
た。しかし、叩打回数を多くしているために毛羽が多く
発生し、補強用の織物として十分な機能を呈することが
できないものであった。そのため、得られたプリプレグ
にはボイドが認められた。(Comparative Example 4) A fiber opening treatment was performed using the same apparatus as in Example 4 under the same conditions except that the winding speed was 0.3 m / min. Since the number of taps is increased by setting the winding speed slower than in Example 4,
The opening ratio of the obtained woven fabric was 0.1%, and the opening was sufficient. However, since the number of hits is increased, a large amount of fluff is generated, and a sufficient function as a reinforcing fabric cannot be exhibited. Therefore, voids were recognized in the obtained prepreg.
【００５９】（比較例５）巻取速度を０．５ｍ／分、前
記振動テーブルの加振力を１．１Ｇとして開繊する以外
は、実施例４と同一の装置を用いて同一の条件により開
繊処理を施した。巻取速度を実施例４よりも遅く設定し
叩打回数を多くしているが、加振力が小さく、開繊に必
要な叩打力が小さいため、得られた織物の開口率は１
５．５％と大きく、開繊が不十分であった。そのため、
経糸と緯糸との交差部において厚みが大きくなり、得ら
れたプリプレグは前記交差部でボイドが認められた。Comparative Example 5 The same apparatus as in Example 4 was used under the same conditions except that the winding speed was 0.5 m / min and the vibrating table was set to an exciting force of 1.1 G to open the fiber. An opening process was performed. The winding speed was set lower than in Example 4, and the number of tappings was increased. However, since the vibrating force was small and the tapping force required for opening the fiber was small, the opening ratio of the obtained woven fabric was 1
It was as large as 5.5%, and the opening was insufficient. for that reason,
The thickness increased at the intersection of the warp and the weft, and voids were observed in the obtained prepreg at the intersection.
【００６０】[0060]
【表１】 [Table 1]
【００６１】以上、述べたように、本発明によれば、相
対的に低い単位面積当たりの重量に対して、相対的に高
い番手の多数本の強化繊維からなる強化繊維糸条を、経
糸及び緯糸として製織された強化繊維織物を加熱して、
前記強化繊維糸条のサイジング剤の粘度が１０ｐｏｉｓ
ｅ以下になり同サイジング剤によるフィラメント間の結
合力を弱めた状態で、同強化繊維織物に対して直交する
方向から多数の叩打部材を衝突させて前記織物を叩打し
ているため、前記糸条に毛羽の発生がなく十分に開繊し
て開口率が１％以下にすることができる。しかも、本発
明の糸条開繊装置は格別に複雑な機構や乾燥手段等の開
繊とは別途の手段を必要とせず、コンパクトで設置スペ
ースが小さい。As described above, according to the present invention, a reinforcing fiber yarn comprising a large number of reinforcing fibers having a relatively high count with respect to a relatively low weight per unit area is formed by a warp and a warp. Heat the reinforcing fiber woven fabric woven as weft,
The sizing agent for the reinforcing fiber yarn has a viscosity of 10 pois
e or less, and in a state where the bonding force between the filaments by the sizing agent is weakened, a large number of striking members collide with the reinforcing fiber woven fabric in a direction perpendicular to the woven fabric to beat the woven fabric. The fibers can be sufficiently opened without generating fluff and the opening ratio can be reduced to 1% or less. In addition, the yarn opening apparatus of the present invention does not require any special means such as a complicated mechanism or a drying means, and is compact and has a small installation space.
【図１】本発明の強化繊維織物の製造に適した強化繊維
織物の製造機を概略的に示す側面図である。FIG. 1 is a side view schematically showing a reinforcing fiber fabric manufacturing machine suitable for manufacturing a reinforcing fiber fabric of the present invention.
【図２】上記製造機における糸条開繊装置を概略的に示
す斜傾図である。FIG. 2 is a perspective view schematically showing a yarn opening device in the manufacturing machine.
【図３】前記糸条開繊装置における叩打部材である鋼球
の配列パターンを示す説明図である。FIG. 3 is an explanatory view showing an arrangement pattern of steel balls as a tapping member in the yarn opening device.
【図４】サイジング剤の粘度と加熱温度の関係を示すグ
ラフである。FIG. 4 is a graph showing the relationship between the viscosity of the sizing agent and the heating temperature.
１ 糸条開繊装置 ２ 鋼鈑 ３ 叩打部材（鋼球） ４ 振動テーブル ５ 加振源 ６ ハウジング ７ ホルダー ７ａ 孔部 １０ 強化繊維織物の製造機 １１ クリール １２ ニップロール １３ 巻取部 Ｗ 強化繊維織物 DESCRIPTION OF SYMBOLS 1 Yarn opening device 2 Steel plate 3 Tapping member (steel ball) 4 Vibration table 5 Vibration source 6 Housing 7 Holder 7a Hole 10 Reinforcement fiber fabric manufacturing machine 11 Creel 12 Nip roll 13 Winding portion W Reinforcement fiber fabric
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 正明 愛知県名古屋市東区砂田橋四丁目１番60号 三菱レイヨン株式会社商品開発研究所内 (72)発明者 武田 重一 愛知県名古屋市東区砂田橋四丁目１番60号 三菱レイヨン株式会社商品開発研究所内 Ｆターム(参考） 3B154 AA14 AB20 BA25 BB12 BB47 BB60 BC02 BC29 BF03 BF07 BF11 BF14 BF15 DA06 DA30 4L048 AA05 AA34 AA48 AB07 AB11 AB14 AC09 BA01 BA02 CA01 CA15 DA41 EB00 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Sato 4-160 Sunadabashi, Higashi-ku, Nagoya City, Aichi Prefecture Inside Mitsubishi Rayon Co., Ltd. (72) Inventor Shigeichi Takeda 4-chome Sunadabashi, Higashi-ku, Nagoya City, Aichi Prefecture No. 1-60 Mitsubishi Rayon Co., Ltd. Product Development Laboratory F term (reference) 3B154 AA14 AB20 BA25 BB12 BB47 BB60 BC02 BC29 BF03 BF07 BF11 BF14 BF15 DA06 DA30 4L048 AA05 AA34 AA48 AB07 AB11 AB14 AC09 BA01 BA02 CA01 CA41 DA41 EB00
Claims (7)
り製織した後、開繊処理が施された強化繊維織物であっ
て、 前記経糸及び緯糸の繊度が６００〜２０，０００デニー
ル、そのフィラメント数が１，０００〜２４，０００本
であり、 開繊処理後の開口率が１％以下である、ことを特徴とす
る強化繊維織物。1. A reinforced fiber woven fabric which has been woven with a warp and a weft consisting of a reinforcing fiber yarn and then subjected to fiber opening treatment, wherein the warp and the weft have a fineness of 600 to 20,000 denier, and the number of filaments thereof Is 1,000 to 24,000, and the opening ratio after opening is 1% or less.
く、織物目付けが８０〜１００ｇ/ ｍ2 である請求項１
記載の強化繊維織物。2. The reinforcing fiber yarn has substantially no twist and a fabric weight of 80 to 100 g / m 2.
The reinforced fiber woven fabric according to the above.
化繊維織物の製造方法であって、 製織された強化繊維織物を加熱し、同織物に付着してい
るサイジング剤の粘度を１０ｐｏｉｓｅ以下とするこ
と、及び前記強化繊維織物を、鋼板と同鋼板に対向して
配された叩打手段との間を走行させると共に、前記叩打
手段を前記鋼板に対して直交方向に振動させて前記織物
を前記鋼板と前記叩打手段との間で叩打すること、によ
り強化繊維糸条を開繊させる工程を含んでなることを特
徴とする強化繊維織物の製造方法。3. A method for producing a reinforced fiber woven fabric in which a warp and a weft comprise reinforced fiber yarns, wherein the woven reinforced fiber woven fabric is heated to reduce the viscosity of a sizing agent attached to the woven fabric to 10 poise or less. And, while running the reinforcing fiber woven fabric between a steel plate and a tapping means arranged opposite to the steel plate, vibrating the tapping means in a direction orthogonal to the steel plate, the woven fabric to the said A method for producing a reinforcing fiber woven fabric, comprising a step of tapping between a steel sheet and the tapping means to open the reinforcing fiber yarn.
Ｇに設定することを含んでなる請求項３記載の強化繊維
織物の製造方法。4. An exciting force of 1.2 to 7
The method for producing a reinforced fiber woven fabric according to claim 3, comprising setting to G.
前記強化繊維織物の走行速度を０．５〜４．０ｍ／分に
設定することを含んでなる請求項３記載の強化繊維織物
の製造方法。5. The production of a reinforcing fiber woven fabric according to claim 3, further comprising setting a traveling speed of the reinforcing fiber woven fabric in the step of opening the reinforcing fiber yarn to 0.5 to 4.0 m / min. Method.
化繊維織物の糸条開繊装置であって、 鋼板と、 前記鋼板に平行な前記織物の走行路を挟んだ平面内に配
された叩打手段と、 前記叩打手段を前記鋼板に対して直交方向に振動させる
加振源と、 前記強化繊維織物を加熱する加熱手段と、を備えてなる
ことを特徴とする強化繊維織物の糸条開繊装置。6. A yarn opening device for a reinforced fiber woven fabric, in which a warp and a weft comprise reinforced fiber yarns, are arranged in a plane sandwiching a steel plate and a running path of the woven fabric parallel to the steel plate. Tapping means, a vibration source for causing the tapping means to vibrate in a direction orthogonal to the steel plate, and a heating means for heating the reinforcing fiber woven fabric, wherein the yarn opening of the reinforcing fiber woven fabric is provided. Textile equipment.
以上の平面を持つ複数のブロック体からなる叩打部材
と、それらの叩打部材を支持する振動テーブルとを備
え、前記叩打部材は前記鋼鈑の表面に対して自由回転が
可能に前記振動テーブルにより支持されてなる請求項６
記載の強化繊維織物の糸条開繊装置。7. The hitting means comprises a plurality of spheres, cylinders,
A striking member composed of a plurality of blocks having the above-mentioned plane, and a vibrating table supporting the striking members, wherein the striking member is supported by the vibrating table so as to freely rotate with respect to the surface of the steel plate. Claim 6
The fiber opening device for a reinforced fiber woven fabric according to the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000136644A JP4559589B2 (en) | 2000-05-10 | 2000-05-10 | Method for producing reinforced fiber fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000136644A JP4559589B2 (en) | 2000-05-10 | 2000-05-10 | Method for producing reinforced fiber fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001316971A true JP2001316971A (en) | 2001-11-16 |
| JP4559589B2 JP4559589B2 (en) | 2010-10-06 |
Family
ID=18644555
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000136644A Expired - Lifetime JP4559589B2 (en) | 2000-05-10 | 2000-05-10 | Method for producing reinforced fiber fabric |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004137623A (en) * | 2002-10-17 | 2004-05-13 | Ichimura Sangyo Co Ltd | Method and apparatus for opening sheet-like woven or knitted fabric and sheet-like woven and knitted fabric |
| JP2004292992A (en) * | 2003-03-27 | 2004-10-21 | Ichimura Sangyo Co Ltd | Flat woven fabric, its laminate, prepreg using those, fiber reinforced plastic and composite formed product and protective product using the same formed product |
| JP2005290623A (en) * | 2004-03-31 | 2005-10-20 | Arisawa Mfg Co Ltd | Aperture ratio-measuring device |
| WO2009022609A1 (en) * | 2007-08-10 | 2009-02-19 | Arisawa Mfg. Co., Ltd. | Method of opening or spreading woven fabric, woven fabric and composite material |
| US7779870B2 (en) | 2003-09-05 | 2010-08-24 | Toray Industries, Inc. | Method and equipment for manufacturing reinforced fiber textile |
| US7850546B2 (en) | 2003-05-21 | 2010-12-14 | Taylor Made Golf Company, Inc. | Golf club head having a composite face insert |
| US8777776B2 (en) | 2003-05-21 | 2014-07-15 | Taylor Made Golf Company, Inc. | Golf club head having a composite face insert |
| JP2016514218A (en) * | 2013-03-08 | 2016-05-19 | ヘクセル ランフォルセマン | Fabrics made especially with carbon yarns with low thickness variation combined with a specific basis weight range |
| CN110438619A (en) * | 2019-09-06 | 2019-11-12 | 天津工大航泰复合材料有限公司 | A kind of melted based on thermal current expands fine filament tow vibration exhibition yarn feeding device |
| EP4206373A1 (en) * | 2021-12-20 | 2023-07-05 | Raytheon Technologies Corporation | Method and device for spreading fiber tows using an ultrasonic probe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004137623A (en) * | 2002-10-17 | 2004-05-13 | Ichimura Sangyo Co Ltd | Method and apparatus for opening sheet-like woven or knitted fabric and sheet-like woven and knitted fabric |
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| US8777776B2 (en) | 2003-05-21 | 2014-07-15 | Taylor Made Golf Company, Inc. | Golf club head having a composite face insert |
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| JP2005290623A (en) * | 2004-03-31 | 2005-10-20 | Arisawa Mfg Co Ltd | Aperture ratio-measuring device |
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| US8161607B2 (en) | 2007-08-10 | 2012-04-24 | Arisawa Mfg. Co. Ltd. | Method for opening fabric, fabric, and composite material |
| JP2016514218A (en) * | 2013-03-08 | 2016-05-19 | ヘクセル ランフォルセマン | Fabrics made especially with carbon yarns with low thickness variation combined with a specific basis weight range |
| CN110438619A (en) * | 2019-09-06 | 2019-11-12 | 天津工大航泰复合材料有限公司 | A kind of melted based on thermal current expands fine filament tow vibration exhibition yarn feeding device |
| EP4206373A1 (en) * | 2021-12-20 | 2023-07-05 | Raytheon Technologies Corporation | Method and device for spreading fiber tows using an ultrasonic probe |
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