JPS609962A - Production of fiber sheet - Google Patents
Production of fiber sheetInfo
- Publication number
- JPS609962A JPS609962A JP58111501A JP11150183A JPS609962A JP S609962 A JPS609962 A JP S609962A JP 58111501 A JP58111501 A JP 58111501A JP 11150183 A JP11150183 A JP 11150183A JP S609962 A JPS609962 A JP S609962A
- Authority
- JP
- Japan
- Prior art keywords
- tension
- fiber
- roll
- fiber bundles
- fiber bundle
- 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.)
- Granted
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Nonwoven Fabrics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は一方向引揃え繊維プリプレグの新規な製造法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method for producing unidirectionally aligned fiber prepregs.
現在、炭素繊維、ガラス繊維或は全芳香族ポリアミド繊
維等の一方向引揃え繊維シートに。Currently, it is used for unidirectionally aligned fiber sheets such as carbon fiber, glass fiber, or fully aromatic polyamide fiber.
エポキシ樹脂、フェノール樹脂、不飽和ポリエステル樹
脂等の熱硬化性樹脂をマトリックスとして含浸した。い
わゆる一方向引揃えプリプレグが複合材料の中間素材と
して広メ利用されている。この様なプリプレグは多数本
の繊維束を均一な間隔で並べ、繊維束間にすき間のない
状態まで繊維束を開繊しシート状とした後、樹脂を含浸
させ製造されるのが一般的である。A thermosetting resin such as epoxy resin, phenolic resin, or unsaturated polyester resin was impregnated as a matrix. So-called unidirectional prepregs are widely used as intermediate materials for composite materials. This kind of prepreg is generally manufactured by arranging a large number of fiber bundles at uniform intervals, opening the fiber bundles until there are no gaps between the fiber bundles, forming a sheet, and then impregnating it with resin. be.
この一方向引揃えプリプレグの特徴のひとつは、繊維が
織布の様に大ぎ（湾曲することな（平行に引揃えられて
いるため、繊維の有する強度９弾性率等を効率よ（発揮
させた複合材料が得られることである。One of the characteristics of this unidirectionally aligned prepreg is that the fibers are large (not curved) and aligned parallel to each other like woven fabrics, so they can efficiently (exploit) the strength and elastic modulus of the fibers. It is possible to obtain a composite material with a high temperature.
このような一方向引揃えプリプレグを製造する場合に使
用される繊維束本数は、製造するプリプレグの厚さ或は
幅、或は使用する繊維束の太さ或はフィラメント数によ
って決定されるが極めて多本数にのぼる。たとえば厚さ
０．１〜０、１５ ｍｗで幅１ｍのプリプレグな製造す
る際に使用する繊維束は１５０本〜４００本にもなる。The number of fiber bundles used when manufacturing such a unidirectionally aligned prepreg is determined by the thickness or width of the prepreg to be manufactured, the thickness of the fiber bundle used, or the number of filaments, but it is extremely There are many. For example, 150 to 400 fiber bundles are used to manufacture a prepreg with a thickness of 0.1 to 0.15 mw and a width of 1 m.
この様に多数の繊維束を各繊維束間で張力を均一にし、
引揃えることは極めてむずかしいことであるが、その張
力が不均一であった場合張力のゆるい繊維束はたるみを
生じ繊維に蛇行や乱れが発生する。又、張力が強い繊維
束はひきっげ現象をおこし、プリプレグの外観を著しく
きたないものとする。又、この様なプリプレグを使用し
た成形物は外観に繊維の乱れが発生し。In this way, the tension is made uniform between many fiber bundles, and
It is extremely difficult to pull the fibers together, but if the tension is uneven, the fiber bundle with loose tension will sag, causing the fibers to meander and become disordered. In addition, a fiber bundle with strong tension causes a pull-up phenomenon, which significantly deteriorates the appearance of the prepreg. In addition, molded products using such prepregs have disordered fibers in their appearance.
商品価値を低下させるばかりでなく１弾性率或は強度が
所期の値よりも低（、かつばらつきの太さいものとなる
。Not only does this reduce the commercial value, but the modulus of elasticity or strength becomes lower than the expected value (and the variation becomes larger).
従来、多数本の繊維束の引揃えの際の張力の均一化のた
めの検討は数多（なされている。たと次げ繊維束が巻か
れたボビンを引き出す際のシャフトにバンドブレーキ等
のブレーキ装置を取付け、１本１本引き出し張力が一定
となる様にブレーキ装置を調整する。、方法があるが、
数百本の繊維束の張力を１本１本調整するには手間がか
かり、さらに繊維束ボビンの外層と内層ではその径の変
化により経時的に張力が変化するため調整することはほ
とんど不可能に近い。又繊維束１本１本にダンシングバ
ー或はロールを取付け、さらにパウダーブレーキ或は特
殊なブレーキ装置により、電気的に張力制御を行うこと
は可能であるが、この装置を数百本に対して設置するに
は大きな空間と大きな費用を要する。In the past, many studies have been made to equalize the tension when pulling together a large number of fiber bundles.In addition, a brake such as a band brake was applied to the shaft when pulling out the bobbin on which the fiber bundles were wound. Attach the device and adjust the brake device so that the tension is constant when pulling out each wire one by one.There is a method, but
Adjusting the tension of hundreds of fiber bundles one by one takes time and effort, and it is almost impossible to adjust because the tension changes over time in the outer and inner layers of the fiber bundle bobbin due to changes in their diameters. Close to. It is also possible to attach a dancing bar or roll to each fiber bundle and control the tension electrically using a powder brake or a special brake device, but this device cannot be used for hundreds of fiber bundles. Installation requires a large amount of space and costs a lot of money.
本発明者らは上記欠点の解決を目的として種種検討の結
果本発明に到達したものである。The present inventors have arrived at the present invention as a result of various studies aimed at solving the above-mentioned drawbacks.
すなわち本発明の要旨とするところは、多数本の繊維束
を並べ、ニップロールでニップしながら引取り、一方向
引揃え繊維シートを製造するに際して、ニップロールで
トウ開張力を調整しながら繊維シートを製造することに
ある。That is, the gist of the present invention is to arrange a large number of fiber bundles, take them off while nipping them with nip rolls, and produce a unidirectionally aligned fiber sheet while adjusting the tow opening tension with the nip rolls. It's about doing.
以下本発明法を図面により詳細に説明する。The method of the present invention will be explained in detail below with reference to the drawings.
第１図は本発明法の実施に使用される一方向引揃え繊維
シートの製造装置の一例の配置図であり、繊維束群（１
）は一定の間隔に引揃えるためのコーム（２）を通り、
送り込みロール（３）に導入され、さらに適当な長さＬ
を走行した後、繊維束群全体に張力Ｔがかかる様に調整
されたダンサ−ロール等の張力調整装置（４）を通過さ
せ開繊装置（５）によりシート状に開繊し、引張ロール
（６）により樹脂含浸装置等に供給されるものである。FIG. 1 is a layout diagram of an example of a manufacturing apparatus for a unidirectionally aligned fiber sheet used in carrying out the method of the present invention, and shows a group of fiber bundles (1
) passes through a comb (2) to align them at regular intervals,
Introduced into the feed roll (3), and further adjusted to a suitable length L
After traveling through the fiber bundles, the fibers are passed through a tension adjustment device (4) such as a dancer roll, which is adjusted so that a tension T is applied to the entire group of fiber bundles, and the fibers are opened into a sheet by a fiber opening device (5). 6) is supplied to a resin impregnation device or the like.
なお樹脂含浸装置は量線装置と引張ロールの間にあって
もさしつかえないし、又張力調整装置は引張ロールと送
り込みロールの藺であれば本発明法の効果に影響するも
のでばない。It should be noted that the resin impregnating device may be placed between the dosing device and the tension roll, and the effect of the method of the present invention will not be affected if the tension adjustment device is located between the tension roll and the feed roll.
本発明法は、上述した装置の特に送り込みロール（３）
で繊維束をそれぞれにスリップさせることにより各繊維
束の張力を均一化することに特徴がある。第２図はその
機構を理解するための説明図である。ｎ本の繊維束群に
かかる張力をＴ、各繊維束にそれぞれかかる張力を１１
．１．。The method of the present invention is particularly applicable to the infeed roll (3) of the above-mentioned apparatus.
The feature is that the tension of each fiber bundle is made uniform by slipping the fiber bundles to each other. FIG. 2 is an explanatory diagram for understanding the mechanism. The tension applied to the group of n fiber bundles is T, and the tension applied to each fiber bundle is 11.
．． 1. .
ｔ３・・・ｔｎとすれば、張力Ｔは装置に組込まれた張
力制御装置によりいつも一定に保つことが出来るので１
．、１．、１．・・・ｔｎの平均値はＴ／ｎでたえず一
定であるが、ニップロールで繊維束のスリップがない場
合には１．、１．、１．−°・ｔｎはかならずしも一定
ではない。たとえばこの装置の運転開始時即ち引張ロー
ル及び送り出しロールのニップを開始するとぎに１．、
１．、１．・・・ｔｎを均一にしてニップすることは不
可能に近いし、不均一のまま運転すればそのままの不均
一な状態が続（。又、走行中においても送り込みロール
から送りだされる繊維束の長さはそれぞれ微妙に変化し
、たとえば送り込みロールに導入される繊維束が棒状で
あるか、平面状であるかにより、或は繊維束は多少のク
リンプを有しているのが普通であるから、その程度によ
り送り込みロールからの送り出される繊維束の長さはそ
れぞれ微妙な差が発生し、送り出された繊維間の張力は
均一にはならない。If t3...tn, the tension T can always be kept constant by the tension control device built into the device, so it is 1.
．． , 1. , 1. ...The average value of tn is always constant at T/n, but if there is no slip of the fiber bundle on the nip roll, the average value of tn is 1. , 1. , 1. −°·tn is not necessarily constant. For example, at the start of operation of this device, that is, when the nip between the tension roll and the delivery roll is started, 1. ,
1. , 1. ... It is almost impossible to nip with a uniform tn, and if the operation is continued with an uneven tn, the uneven state will continue. The length of each varies slightly, for example, depending on whether the fiber bundle introduced into the feed roll is rod-shaped or flat, or the fiber bundle usually has some degree of crimp. Therefore, the length of the fiber bundle sent out from the feed roll varies slightly depending on the degree of the difference, and the tension between the sent out fibers is not uniform.
ところが本発明法での上記ニツプロールテ繊維束を適度
にスリップさせるとこれらの張力の不均一が均一化され
るのである。However, in the method of the present invention, when the Nipprolte fiber bundle is appropriately slipped, these uneven tensions are made uniform.
さらに詳しく説明を加えれば、第１図に示す引張ロール
（６）では繊維束群のスリップがおこらない様にニップ
圧を充分に取り、送り込みロールはニップ圧を小さくと
り、適当にスリップをさせる。すなわち引張ロールの周
速に対して送り込みロールの周速を遅（するわけである
。もちろんこの間張力制御装置は正常に作動し全張力Ｔ
を維持している。さらにこのスリップを繊維束１本１本
について説明すれば、スリップの大きさは繊維束にかか
る張力ｔに比例するから張力のゆるんだ繊維束はスリッ
プが少なく、すなわち送り込みロールからの送り込み量
は少な（、だんだんゆるみは少な（なり、ついには他の
繊維束と同じ張力になる。又、張力のかかりすぎた繊維
束は他の繊維束に比較しスリップの度合は大きくなり張
力は低下し、ついには他の繊維束と同じ張力となる。即
ち繊維束の平均張力Ｔ／ｎよりも太き（張力がかかった
繊維束はスリップ度合が太き（な’ＪＴ／ｎにかぎりな
（近すこうとし、逆にＴ／ｎより小さい張力の繊維束は
スリップ度合が少な（なり、やがてＴ／ｎに近ずぎ繊維
束同志かたがいに張力の均一化の方向にスリップし合う
わけである。この作用は多数本引揃え繊維束の張力の均
一化におどろくべき効果を発揮する。たとえば前述した
ように数百本の繊維束を張力が不均一なまま、実際には
均一化しようとしても不可能であるが、引張ロール。To explain in more detail, the tension roll (6) shown in FIG. 1 provides sufficient nip pressure to prevent the fiber bundle group from slipping, and the feed roll provides a small nip pressure to allow appropriate slippage. In other words, the peripheral speed of the feed roll is made slower than the peripheral speed of the tension roll. Of course, during this time the tension control device operates normally and the total tension T is
is maintained. Furthermore, if this slip is explained for each fiber bundle, the size of the slip is proportional to the tension t applied to the fiber bundle, so fiber bundles with loose tension have less slip, that is, the amount of feed from the feed roll is small. (The loosening gradually decreases, and finally the tension becomes the same as that of other fiber bundles.Furthermore, fiber bundles with excessive tension have a greater degree of slip than other fiber bundles, and the tension decreases, and finally has the same tension as other fiber bundles.In other words, the fiber bundle is thicker than the average tension T/n of the fiber bundle. , conversely, fiber bundles with a tension smaller than T/n have a small degree of slip (and eventually, as they approach T/n, the fiber bundles slip in the direction of equalizing the tension. This effect It has a surprising effect on equalizing the tension of a large number of aligned fiber bundles.For example, as mentioned above, it is impossible to equalize the tension of several hundred fiber bundles when the tension is uneven. Yes, but it is a tension roll.
送り込みロールをニップし走行を開始すると。When you nip the feed roll and start running.
始めは不均一な繊維束が多く、半数程度がたるんだ状態
にあるが適度なスリップを与えると。Initially, there are many uneven fiber bundles, and about half of them are sagging, but if you give them a suitable amount of slip.
少しずつ均一化し、やがて全繊維束が一平面となるまで
均一化が進む。又、このスリップは全張力Ｔと送り込み
ロールの圧力を調整することにより任意に調整出来る。The fibers become uniform little by little until all the fiber bundles are on one plane. Further, this slip can be arbitrarily adjusted by adjusting the total tension T and the pressure of the feed roll.
しかしながら一般に全張力Ｔは２本装置の中の開繊工程
に必要とする張力から決定されることが多（、実質的に
はスリップの調整は送り出しロールのニップ圧で調整す
ることとなる。However, in general, the total tension T is often determined from the tension required for the fiber opening process in the two-piece device (substantially, the slip is adjusted by the nip pressure of the delivery rolls.
本発明考等の詳細な検討の結果、このスリップの度合、
即ち送り出しロールと引張ロールの周速の差は０．５％
〜２％で多（の場合は０．５％〜１チで充分であった。As a result of detailed consideration of the present invention, the degree of this slip,
In other words, the difference in peripheral speed between the delivery roll and the tension roll is 0.5%.
In the case of 2% to 1%, 0.5% to 1% was sufficient.
；し
以上の様に本発明法は、ニップローの組合せと、ニップ
ロールと繊維束のスリップを利用して、多数本の繊維束
を均一な張力に引揃えという困難な問題を比較的簡単な
装置で経済的にかつ効果的に解決した。又、この方法に
より製造した引揃え繊維束シートで製造した一方回引揃
えプリプレグは、前述した繊維の蛇行や乱れのない高品
質なものであった。As described above, the method of the present invention uses a combination of nip rolls and the slip between the nip rolls and fiber bundles to solve the difficult problem of aligning a large number of fiber bundles with uniform tension using a relatively simple device. solved economically and effectively. Further, the one-turn aligned prepreg produced from the aligned fiber bundle sheet produced by this method was of high quality without the above-mentioned meandering or disorder of the fibers.
以下実施例により本発明を具体的に説明する。The present invention will be specifically explained below using Examples.
実施例
６０００フイラメントからなる炭素繊維束１５８本を供
糸速度１００ｍ／時間で供糸し。Example 6 158 carbon fiber bundles made of 000 filaments were fed at a feeding speed of 100 m/hour.
幅が５０５ｙ＋ｍになる様にコームで幅を規制し。Regulate the width with a comb so that the width is 505y+m.
送り出しロールに供給した。一方送り出しロールと引張
ロールの間での張力は１２０ｋｐＫなる様に張力制御装
置を調整した。まず送り出しロールのニップ圧を線圧で
０．７７ ｋＰ／ｃｍで走行させたところ、走行開始直
後は張力がバラバラで送り出しロールと張力制御装置の
間でたるみのある炭素繊維束が約半数あったが、走行開
始後６分でたるみはなくなり、きれいな平面状の引揃え
シートとして引張ロールを通過した。又。It was fed to the delivery roll. On the other hand, the tension control device was adjusted so that the tension between the delivery roll and the tension roll was 120 kpK. First, when the carbon fiber bundle was run at a linear nip pressure of 0.77 kP/cm on the delivery roll, the tension was inconsistent immediately after the start of the run, and about half of the carbon fiber bundles were slack between the delivery roll and the tension control device. However, 6 minutes after the start of running, the sag disappeared and the sheet passed through the tension roll as a neat, flat, aligned sheet. or.
本実施例では引張ロールに入る前で、厚さ７０μのエポ
キシ樹脂をコーティングした離型紙を引揃え炭素繊維束
に合体し引張ロールに引続き設置した加熱ニップロール
で樹脂を含浸しプリプレグとした。このプリプレグは繊
維のたるみによる蛇行も乱れもなかった。In this example, before entering the tension roll, a release paper coated with an epoxy resin having a thickness of 70 μm was pulled together and combined into a carbon fiber bundle, and impregnated with resin using a heated nip roll placed next to the tension roll to form a prepreg. This prepreg had no meandering or disorder due to slack fibers.
次に比較例として、送り出しロールのニップ圧を３．２
ｋｙ／ｃｍとしその他の条件はすべて実施例と同一と
して走行させた。走行開始直後のたるみのある繊維束は
１時間以上の走行後も均一な張力にはならず、これで製
造したプリプレグは繊維の蛇行、乱れが著しく、製品に
はならなかった。Next, as a comparative example, the nip pressure of the delivery roll was set to 3.2.
ky/cm, and all other conditions were the same as in the example. The fiber bundle, which was slack immediately after the start of running, did not have a uniform tension even after running for more than 1 hour, and the prepreg produced with this had significant meandering and disorder of the fibers, and could not be used as a product.
第１図
本発明法の実施に使用される引揃え繊維シートの製造装
置の一例の配置図
（１）繊維束供糸装置
（２） コーム
（３）送り出しニップロール
（４）張力制御装置
（５） 開繊装置
（６） 引張ロール
第２図
本発明法のニップロールでのスリップ機構の説明図
ＴＱ維束群全体にかかる張力
１．、１．、１．・°・ｔｎ 繊維束１本１本にかかる
張力Figure 1: Layout diagram of an example of a device for manufacturing aligned fiber sheets used in carrying out the method of the present invention (1) Fiber bundle supply device (2) Comb (3) Delivery nip roll (4) Tension control device (5) Fiber opening device (6) Tension roll Figure 2 Explanatory diagram of the slip mechanism on the nip roll of the method of the present invention Tension applied to the entire TQ fiber bundle group 1. , 1. , 1.・°・tn Tension applied to each fiber bundle
Claims (1)
引取り、一方向引揃え繊維シートを製造するに際して、
ニップロールでトウ間張力を調整することを特徴とする
繊維シートの製造法０When producing a unidirectionally aligned fiber sheet by arranging a large number of fiber bundles and taking them while nipping them with nip rolls,
A method for manufacturing a fiber sheet characterized by adjusting the tension between tows with nip rolls0
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58111501A JPS609962A (en) | 1983-06-21 | 1983-06-21 | Production of fiber sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58111501A JPS609962A (en) | 1983-06-21 | 1983-06-21 | Production of fiber sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS609962A true JPS609962A (en) | 1985-01-19 |
| JPH0331822B2 JPH0331822B2 (en) | 1991-05-08 |
Family
ID=14562893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58111501A Granted JPS609962A (en) | 1983-06-21 | 1983-06-21 | Production of fiber sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS609962A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012081407A1 (en) * | 2010-12-13 | 2012-06-21 | 東レ株式会社 | Carbon fiber prepreg, method for producing same and carbon fiber reinforced composite material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59228036A (en) * | 1983-06-10 | 1984-12-21 | 三菱レイヨン株式会社 | Width enlarging method of fiber bundle |
-
1983
- 1983-06-21 JP JP58111501A patent/JPS609962A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59228036A (en) * | 1983-06-10 | 1984-12-21 | 三菱レイヨン株式会社 | Width enlarging method of fiber bundle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012081407A1 (en) * | 2010-12-13 | 2012-06-21 | 東レ株式会社 | Carbon fiber prepreg, method for producing same and carbon fiber reinforced composite material |
| US9074064B2 (en) | 2010-12-13 | 2015-07-07 | Toray Industries, Inc. | Carbon fiber prepreg, method for producing same and carbon fiber reinforced composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0331822B2 (en) | 1991-05-08 |
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