JPH07124944A - Manufacture of narrow prepreg material - Google Patents
Manufacture of narrow prepreg materialInfo
- Publication number
- JPH07124944A JPH07124944A JP27931993A JP27931993A JPH07124944A JP H07124944 A JPH07124944 A JP H07124944A JP 27931993 A JP27931993 A JP 27931993A JP 27931993 A JP27931993 A JP 27931993A JP H07124944 A JPH07124944 A JP H07124944A
- Authority
- JP
- Japan
- Prior art keywords
- prepreg material
- cutting
- blade
- prepreg
- cutter
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、繊維強化プラスチック
等の繊維強化複合材料の成形に用いられる細幅プリプレ
グ材の製造方法に関し、特に、少なくとも片面に離型紙
を重ね合わせた広幅プリプレグ材を、用途に応じた幅に
前記離型紙と共に切断する細幅プリプレグ材の製造方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a narrow prepreg material used for molding a fiber reinforced composite material such as a fiber reinforced plastic, and more particularly to a wide prepreg material having release paper laminated on at least one surface thereof. The present invention relates to a method for producing a narrow prepreg material, which is cut together with the release paper into a width according to the application.
【０００２】[0002]
【従来の技術】繊維強化複合材料の成形に用いられるシ
ート状のプリプレグ材は、製造段階におけるプリプレグ
材相互の粘着を防止するために、通常、少なくとも片面
に離型紙を重ね合わせた状態で巻き取られる。この段階
では、プリプレグ材は、製造設備によって決まる所定の
幅を有する幅広のシート状に形成されている。2. Description of the Related Art A sheet-like prepreg material used for molding a fiber-reinforced composite material is usually wound in a state in which a release paper is superposed on at least one surface of the prepreg material in order to prevent the prepreg materials from sticking to each other in the manufacturing stage. To be At this stage, the prepreg material is formed into a wide sheet having a predetermined width determined by the manufacturing equipment.
【０００３】このため、製造時における幅以下の用途に
用いる場合には、プリプレグ材を巻き戻しながら、離型
紙と共に用途に応じた所望の幅のテープ状あるいは帯状
に切断した後、再び巻き取ってプリプレグ材の製品とし
ている。このプリプレグ材の切断においては、用途にも
よるが、切断後の製品幅には相当厳格な精度が要求され
る。このため、プリプレグ材の切断には、切断精度の高
いシャーカッタやスコアカッタが使用されている。For this reason, when the prepreg material is unwound, the prepreg material is unwound while being cut together with the release paper into a tape or strip having a desired width according to the application, and then rewound. It is a product of prepreg material. In the cutting of the prepreg material, although depending on the application, the product width after cutting requires considerably strict accuracy. Therefore, a shear cutter or a score cutter with high cutting accuracy is used for cutting the prepreg material.
【０００４】ここで、シャーカッタは、回転下刃と回転
上刃とを備え、プリプレグ材と離型紙からなる走行する
重合わせ体を、回転下刃で外周上に支持しながら、回転
上刃によって上方からの剪断、即ち、挟み切りによって
切断するものである。一方、スコアカッタは、回転下刃
と、この回転下刃の回転に伴って回転する従転上刃とを
備え、走行する前記重合わせ体を、回転下刃で外周上に
支持しながら、従転上刃によって上方からの押圧剪断、
即ち、押し切りによって切断するものである。Here, the shear cutter comprises a rotating lower blade and a rotating upper blade, and a rotating upper blade is used to support a running weighted body composed of a prepreg material and release paper on the outer periphery thereof. It is cut by shearing from above, that is, by sandwiching. On the other hand, the score cutter includes a rotating lower blade and a driven upper blade that rotates in accordance with the rotation of the rotating lower blade. Pressing shear from above by the upturning blade,
That is, it is cut by pressing.
【０００５】[0005]
【発明が解決しようとする課題】ところで、特開平５−
１１１８９８号公報には、切断の際におけるプリプレグ
材のドレープ性（柔らかさ）を上げることにより切断の
寸法精度を高めると共に、切断される離型紙からの紙粉
の発生を少なく抑える目的でプリプレグ材を２５℃以上
に加熱しながら切断する発明が開示されている。By the way, Japanese Unexamined Patent Publication No.
111898 discloses a prepreg material for the purpose of increasing the dimensional accuracy of the cutting by increasing the drape property (softness) of the prepreg material at the time of cutting and suppressing the generation of paper dust from the release paper to be cut. An invention is disclosed in which cutting is performed while heating to 25 ° C or higher.
【０００６】しかし、本発明が対象とするプリプレグ材
においては、２５℃以上に加熱すると、用いているマト
リックス樹脂の種類によって、カッタ刃に樹脂が粘着し
て切断性が悪化する問題があった。特に、プリプレグ材
が熱影響を受けて軟化したところにカッタ刃が接触する
ので、プリプレグ材の切断処理に伴ってカッタ刃に粘着
した樹脂が蓄積し、経時的に切断性が低下してゆく。However, in the prepreg material targeted by the present invention, when heated to 25 ° C. or higher, there is a problem that the resin adheres to the cutter blade and the cutting property deteriorates depending on the type of matrix resin used. In particular, since the cutter blade comes into contact with the prepreg material when it is softened by heat, the resin adhering to the cutter blade accumulates along with the cutting treatment of the prepreg material, and the cutting performance deteriorates with time.
【０００７】しかも、本発明が対象とするプリプレグ材
は、加熱速度２℃/min. で測定したマトリックス樹脂の
最低粘度が５×10-2〜５Ｐａ・ｓで、常温または加熱し
て切断するとロールやカッタ刃への樹脂の粘着が増大す
る傾向がある。このため、本発明が対象とするプリプレ
グ材の切断作業においては、カッタ刃の切断性の低下を
引き起こすばかりか、カッタ刃に粘着するマトリックス
樹脂の清掃周期や交換周期が短くなり、作業効率が必然
的に低下するという問題があった。Further, the prepreg material targeted by the present invention has a minimum viscosity of the matrix resin of 5 × 10 -2 to 5 Pa · s measured at a heating rate of 2 ° C./min. Adhesion of resin to the cutter blade tends to increase. Therefore, in the cutting work of the prepreg material targeted by the present invention, not only the cutting property of the cutter blade is deteriorated, but also the cleaning cycle and the replacement cycle of the matrix resin adhering to the cutter blade are shortened, and the work efficiency is inevitable. There was a problem that it declined.
【０００８】このようなカッタ刃へのマトリックス樹脂
の粘着は、カッタの上刃と下刃とによる前記挟み切りや
押し切りによってプリプレグ材が切断されるため、切断
に要する速度や時間によって切断抵抗に起因する剪断熱
がカッタ刃に発生することによる。従って、熱を帯びた
カッタ刃が、切断に際してプリプレグ材に接触すると、
この熱によってマトリックス樹脂が軟化されて粘着が更
に助長される。このため、プリプレグ材の切断に際して
は、カッタ刃に粘着するマトリックス樹脂の除去のため
に、切断作業を中止しなければならず、この中断に伴う
損益も無視できないという問題があった。The adhesion of the matrix resin to the cutter blade is caused by the cutting resistance depending on the speed and time required for the cutting because the prepreg material is cut by the sandwiching and pressing by the upper and lower blades of the cutter. Due to the shearing heat generated on the cutter blade. Therefore, if the heated cutter blade contacts the prepreg material during cutting,
This heat softens the matrix resin and further promotes adhesion. Therefore, when cutting the prepreg material, the cutting operation must be stopped in order to remove the matrix resin adhering to the cutter blade, and there is a problem that the profit and loss associated with this interruption cannot be ignored.
【０００９】本発明は上記の点に鑑みてなされたもの
で、プリプレグを離型紙上に担持してなる広幅プリプレ
グ材を所定の幅に切断して細幅プリプレグ材を製造する
に際し、切断精度を保持しながら紙粉の発生を可能な限
り抑制すると共にカッタ刃の清掃周期を延長することが
可能な細幅プリプレグ材の製造方法を提供することを目
的とする。The present invention has been made in view of the above points, and when cutting a wide prepreg material in which a prepreg is carried on a release paper to a predetermined width to manufacture a narrow prepreg material, the cutting precision is improved. An object of the present invention is to provide a method for manufacturing a narrow prepreg material capable of suppressing the generation of paper dust as much as possible while extending the cleaning cycle of a cutter blade.
【００１０】[0010]
【課題を解決するための手段及び作用】本発明によれば
上記目的を達成するため、加熱速度２℃/min. で測定し
た最低粘度が５×10-2〜５Ｐａ・ｓの範囲にある樹脂を
マトリックス樹脂とするプリプレグを離型紙上に担持し
てなる広幅プリプレグ材を、巻付角を５度以下に設定し
て下刃に巻き付けると共に、この下刃と協働して前記プ
リプレグ材を切断する上刃を有するカッタを用いて所望
の幅に切断して細幅プリプレグ材を製造する際に、前記
広幅プリプレグ材ならびに前記下刃と上刃とを切断部に
おいて、１０℃以下、−５０℃以上に冷却した空気で冷
却しながら切断する構成としたものである。According to the present invention, in order to achieve the above object, a resin having a minimum viscosity of 5 × 10 -2 to 5 Pa · s measured at a heating rate of 2 ° C./min. A wide prepreg material, in which a prepreg of which is a matrix resin is carried on a release paper, is wrapped around a lower blade with a wrap angle set to 5 degrees or less, and the prepreg material is cut in cooperation with the lower blade. When manufacturing a narrow prepreg material by cutting to a desired width with a cutter having an upper blade to cut, the wide prepreg material and the lower blade and the upper blade in the cutting portion, 10 ℃ or less, -50 ℃ The cutting is performed while cooling with the air cooled as described above.
【００１１】ここで、加熱速度２℃/min. で測定したマ
トリックス樹脂の最低粘度とは、動的粘弾性測定方法に
よる測定機を用いて測定した粘度をいう。このような測
定機としては、例えばソリキッドメータ（レオロジ社
製）がある。加熱速度２℃/min. における最低粘度が５
×10-2〜５Ｐａ・ｓの条件を満たすマトリックス樹脂と
しては、エポキシ樹脂，ポリエステル樹脂，ビニルエス
テル樹脂，フェノール樹脂等の多くの熱硬化性樹脂があ
げられるが、特に接着力が高いエポキシ樹脂に適用する
と効果が大きい。Here, the minimum viscosity of the matrix resin measured at a heating rate of 2 ° C./min. Means the viscosity measured by using a measuring machine according to the dynamic viscoelasticity measuring method. An example of such a measuring machine is a liquid meter (Rheology Co., Ltd.). The minimum viscosity is 5 at a heating rate of 2 ° C / min.
Many thermosetting resins such as epoxy resin, polyester resin, vinyl ester resin, and phenol resin can be used as the matrix resin satisfying the condition of × 10 -2 to 5 Pa · s. The effect is great when applied.
【００１２】ここで、最低粘度が５×10-2〜５Ｐａ・ｓ
のマトリックス樹脂は、常温においてもカッタ刃への樹
脂の粘着が顕著であるが、最低粘度が５×10-2Ｐａ・ｓ
よりも小さいものは、常温においても粘着性が低くカッ
タ刃への粘着が問題にはならず、また、最低粘度が５Ｐ
ａ・ｓを越えるものは、樹脂の粘度が高過ぎてカッタ刃
に付着しなくなる。Here, the minimum viscosity is 5 × 10 -2 to 5 Pa · s.
The matrix resin has a remarkable sticking of the resin to the cutter blade even at room temperature, but the minimum viscosity is 5 × 10 -2 Pa · s.
If the size is smaller than the above, the adhesiveness is low even at room temperature, the adhesion to the cutter blade does not matter, and the minimum viscosity is 5P.
If it exceeds a · s, the viscosity of the resin is too high to adhere to the cutter blade.
【００１３】従って、加熱速度２℃/min. における最低
粘度が５×10-2〜５Ｐａ・ｓのマトリックス樹脂を含浸
させた広幅プリプレグ材を所望の幅に切断して細幅プリ
プレグ材を製造する本発明方法においては、広幅プリプ
レグ材ならびに切断部を１０℃以下、−５０℃以上に空
気冷却することによって、マトリックス樹脂のカッタ刃
への粘着や付着を回避するのである。Therefore, a wide prepreg material impregnated with a matrix resin having a minimum viscosity of 5 × 10 −2 to 5 Pa · s at a heating rate of 2 ° C./min. Is cut into a desired width to produce a narrow prepreg material. In the method of the present invention, the wide prepreg material and the cut portion are air-cooled to 10 ° C. or lower and −50 ° C. or higher to avoid adhesion and adhesion of the matrix resin to the cutter blade.
【００１４】本発明方法においては、広幅プリプレグ材
ならびに切断部を、１０℃以下、−５０℃以上の空気で
冷却する方法としては、特に限定されないが、ノズルを
プリプレグ及び，又は刃の近傍に設置し、ノズル先端よ
り冷却空気を吹き出させる方法があげられる。また、切
断に伴い、冷却による結露を生じないよう設備条件等を
調整する必要がある。In the method of the present invention, the method of cooling the wide prepreg material and the cutting portion with air at 10 ° C. or lower and −50 ° C. or higher is not particularly limited, but the nozzle is installed near the prepreg and / or the blade. However, there is a method of blowing cooling air from the tip of the nozzle. In addition, it is necessary to adjust equipment conditions so that dew condensation due to cooling does not occur with cutting.
【００１５】さらに、切断するプリプレグ材は、冷却温
度を安定させるために、切断に先だって予備冷却してお
くことが好ましい。本発明の細幅プリプレグ材の製造方
法で用いる広幅プリプレグ材の切断方法としては、シャ
ー方式やスコア方式のいずれであっても使用できる。Further, the prepreg material to be cut is preferably precooled before cutting in order to stabilize the cooling temperature. As a method for cutting the wide prepreg material used in the method for producing a narrow prepreg material of the present invention, either a shear method or a score method can be used.
【００１６】[0016]
【実施例】以下、本発明の細幅プリプレグ材の製造方法
に係る一実施例を図１及び図２に基づいて詳細に説明す
る。図１は、本発明方法を実施するスリッタ装置１を示
し、スリッタ装置１は巻出部１０、カッタ部２０、巻取
部３０及び冷却部４０を備えており、プリプレグ材５を
冷却しながら所定の幅に切断加工する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for manufacturing a narrow prepreg material of the present invention will be described in detail below with reference to FIGS. FIG. 1 shows a slitter device 1 for carrying out the method of the present invention. The slitter device 1 includes an unwinding part 10, a cutter part 20, a winding part 30 and a cooling part 40, and while cooling the prepreg material 5, a predetermined amount is obtained. Cut to width.
【００１７】プリプレグ材５は、プリプレグ５ａの少な
くとも片面に離型紙５ｂを重ね合わせたもので、プリプ
レグ５ａは、補強基材、例えば、炭素繊維織物に加熱速
度２℃/min. で測定した最低粘度が５×10-2〜５Ｐａ・
ｓのマトリックス樹脂を含浸して補強したものである。
巻出部１０は、支持台１１に巻出ロール１２が回動自在
に支持され、巻出ロール１２には加工対象のプリプレグ
材５が巻回されている。また、支持台１１には、巻出ロ
ール１２の回転を制御するブレーキ１３が設けられ、巻
き出されるプリプレグ材５の巻出張力を所望の値に制御
している。The prepreg material 5 is a prepreg 5a having a release paper 5b superposed on at least one surface thereof. The prepreg 5a is a reinforcing base material such as a carbon fiber woven fabric and has a minimum viscosity measured at a heating rate of 2 ° C./min. Is 5 × 10 -2 to 5 Pa
s matrix resin is impregnated and reinforced.
In the unwinding part 10, a unwinding roll 12 is rotatably supported by a support 11, and the unrolling roll 12 is wound with a prepreg material 5 to be processed. Further, the support base 11 is provided with a brake 13 that controls the rotation of the unwinding roll 12, and controls the unwinding tension of the unwound prepreg material 5 to a desired value.
【００１８】カッタ部２０は、プリプレグ材５を離型紙
５ｂと共に用途に応じた所望の幅のテープ状あるいは帯
状に切断する。カッタ部２０は、下刃２１と上刃２２と
がプリプレグ材５を挟んで上下に配置されており、下刃
２１と上刃２２とはそれぞれ異なる回転手段（図示せ
ず）によって相反する方向に回転させられる。カッタ部
２０は、切断に際して、必要に応じてプリプレグ材５の
両側部分を耳部として切断、分離する。The cutter unit 20 cuts the prepreg material 5 together with the release paper 5b into a tape shape or a belt shape having a desired width according to the application. In the cutter unit 20, a lower blade 21 and an upper blade 22 are vertically arranged with the prepreg material 5 interposed therebetween, and the lower blade 21 and the upper blade 22 are in opposite directions by different rotating means (not shown). Is rotated. When cutting, the cutter unit 20 cuts and separates both side portions of the prepreg material 5 as ears as necessary.
【００１９】ここで、下刃２１は、図２に示すように、
外周に巻き付けられたプリプレグ材５の両端の接点と、
下刃２１の回転中心Ｃとのなす巻付角θが５度以下とな
るように設定されている。巻付角θを５度以下に設定す
るのは、切断に伴うプリプレグ材５の屈曲を小さく抑え
るためである。このことは、下刃２１に接触を開始する
ときのプリプレグ材５と、下刃２１との接触を終了して
離れていくときのプリプレグ材５とがなす角度を、175
度より大きく180度以下の範囲に納めることと同義であ
る。Here, the lower blade 21 is, as shown in FIG.
Contact points on both ends of the prepreg material 5 wrapped around the outer periphery,
The winding angle θ formed by the center of rotation C of the lower blade 21 is set to be 5 degrees or less. The wrapping angle θ is set to 5 degrees or less in order to suppress the bending of the prepreg material 5 due to the cutting. This means that the angle formed by the prepreg material 5 at the time of starting contact with the lower blade 21 and the prepreg material 5 at the time of ending contact with the lower blade 21 and moving away is 175
It is synonymous with keeping the range above 180 degrees and above 180 degrees.
【００２０】即ち、プリプレグ材５のドレープ性が悪い
と、切断部Ｐc において、プリプレグ材５が下刃２１か
ら浮き上がって切断位置が変化してしまい、プリプレグ
材５の切断精度が低下したり、シャープな切断面が得ら
れなくなる。このため、プリプレグ材５の屈曲を小さく
して、プリプレグ材５の浮き上がりが極めて小さく抑え
ると共に、プリプレグ材５自体の張力によってプリプレ
グ材５を下刃２１の外周面に密着し易くするのである。That is, if the draping property of the prepreg material 5 is poor, the prepreg material 5 floats up from the lower blade 21 at the cutting portion P c and the cutting position changes, and the cutting accuracy of the prepreg material 5 decreases. A sharp cut surface cannot be obtained. Therefore, the bending of the prepreg material 5 is reduced to suppress the floating of the prepreg material 5 to be extremely small, and the tension of the prepreg material 5 itself makes it easy to adhere the prepreg material 5 to the outer peripheral surface of the lower blade 21.
【００２１】巻取部３０は、支持台３１に巻取ロール３
２，３２が回動自在に支持され、各巻取ロール３２には
巻取モータ３３が設けられている。巻取モータ３３は、
巻出ロール１２から巻き出されるプリプレグ材５の巻取
張力を所望の値に制御する。ここにおいて、巻出ロール
１２から巻き出されたプリプレグ材５は、巻出部１０と
巻取部３０との間に設けたガイドロール２，３に案内さ
れ、カッタ部２０で離型紙５ｂと共に用途に応じた所望
の幅に切断された後、巻取ロール３２，３２に巻き取ら
れる。The take-up unit 30 includes a support base 31 and a take-up roll 3
2, 32 are rotatably supported, and each winding roll 32 is provided with a winding motor 33. The winding motor 33 is
The winding tension of the prepreg material 5 unwound from the unwinding roll 12 is controlled to a desired value. Here, the prepreg material 5 unwound from the unwinding roll 12 is guided by the guide rolls 2 and 3 provided between the unwinding unit 10 and the winding unit 30, and is used together with the release paper 5b in the cutter unit 20. After being cut into a desired width according to the above, it is wound around the winding rolls 32 and 32.
【００２２】また、プリプレグ材５は、ガイドロール
２，３の回転速度を制御することで走行速度、従って切
断速度を制御することが望ましいが、巻取モータ３３の
回転速度を制御することによって行ってもよい。プリプ
レグ材５の切断速度としては、１〜100 ｍ／分が好まし
いが、本発明方法は５10ｍ／分以上で高速切断するとき
にマトリックス樹脂の下刃２１や上刃２２への粘着を抑
制する効果が大である。The prepreg material 5 is preferably controlled by controlling the rotation speeds of the guide rolls 2 and 3 to control the traveling speed, and thus the cutting speed, but by controlling the rotation speed of the winding motor 33. May be. The cutting speed of the prepreg material 5 is preferably 1 to 100 m / min, but the method of the present invention has an effect of suppressing adhesion of the matrix resin to the lower blade 21 and the upper blade 22 when cutting at a high speed of 510 m / min or more. Is large.
【００２３】冷却部４０は、カッタ部２０で離型紙５ｂ
と共に切断されるプリプレグ材５ならびに下刃２１と上
刃２２とを切断部Ｐc において冷却する部分で、冷風発
生装置４１とその制御装置４２とを備えている。冷風発
生装置４１は、１０℃以下に冷却された圧縮空気をプリ
プレグ材５の切断部Ｐc ならびに下刃２１に吹き出して
冷却する他、分岐ノズル４１ａによって上刃２２を冷却
する。制御装置４２は、冷風発生装置４１が吹き出す圧
縮空気の温度を１０℃以下に制御する。The cooling unit 40 includes the cutter unit 20 and the release paper 5b.
A portion for cooling the prepreg material 5 and the lower blade 21 and the upper blade 22 that are cut together with the cutting portion P c , and includes a cold air generator 41 and a controller 42 thereof. The cold air generator 41 blows the compressed air cooled to 10 ° C. or lower to the cutting portion P c of the prepreg material 5 and the lower blade 21, and cools the upper blade 22 by the branch nozzle 41 a. The controller 42 controls the temperature of the compressed air blown by the cold air generator 41 to 10 ° C. or lower.
【００２４】本発明の細幅プリプレグ材の製造方法にお
いては、スリッタ装置１を用いて以下のようにしてプリ
プレグ材５を切断する。先ず、巻出部１０の巻出ロール
１２に巻回されたプリプレグ材５は、ガイドロール２に
よってカッタ部２０へと案内される。カッタ部２０へ案
内されたプリプレグ材５は、下刃２１と上刃２２とによ
って剪断（押し切り）によって切断される。In the method for manufacturing a narrow prepreg material of the present invention, the prepreg material 5 is cut using the slitter device 1 as follows. First, the prepreg material 5 wound around the unwinding roll 12 of the unwinding unit 10 is guided to the cutter unit 20 by the guide roll 2. The prepreg material 5 guided to the cutter unit 20 is cut by the lower blade 21 and the upper blade 22 by shearing (push cutting).
【００２５】このとき、図１に示したように、プリプレ
グ材５は、切断部Ｐc が冷風発生装置４１によって１０
℃以下の空気で冷却されているため、マトリックス樹脂
の下刃２１や上刃２２への粘着が抑制される。このた
め、下刃２１と上刃２２は、切断性が保持されてプリプ
レグ材５がシャープに切断されるので、離型紙５ｂから
の紙粉の発生も抑えられる。しかも、上刃２２は、分岐
ノズル４１ａによって同様に冷却されているため、切断
抵抗に起因する剪断熱が発生しても速やかに冷却され、
剪断熱に起因する樹脂の粘着も抑制される。At this time, as shown in FIG. 1, the cutting portion P c of the prepreg material 5 is 10 by the cold air generator 41.
Since it is cooled with air of ℃ or less, adhesion of the matrix resin to the lower blade 21 and the upper blade 22 is suppressed. Therefore, the lower blade 21 and the upper blade 22 retain their cutting ability and sharply cut the prepreg material 5, so that the generation of paper dust from the release paper 5b is also suppressed. Moreover, since the upper blade 22 is similarly cooled by the branch nozzle 41a, it is quickly cooled even if shearing heat insulation due to cutting resistance occurs.
Adhesion of the resin due to shear insulation is also suppressed.
【００２６】従って、プリプレグ材５は、カッタ部２０
において離型紙５ｂと共に連続的に所望の幅に精度よく
切断され、シャープな切断面が得られる。このようにし
て所望の幅に切断され、２条に分かれたプリプレグ材
５，５は、ガイドロール３に案内されて巻取部３０の巻
取ロール３２，３２にそれぞれ巻き取られ、プリプレグ
材製品ロールとなる。 実施例１，２，３、比較例１ ここで、上記スリッタ装置１を用い、冷却しながら切断
する本発明方法と、冷却しないで切断する従来の方法と
に基づいて同一構成のプリプレグ材を切断した。Therefore, the prepreg material 5 has the cutter portion 20.
In the above, the release paper 5b and the release paper 5b are continuously and accurately cut into a desired width, and a sharp cut surface is obtained. Thus, the prepreg materials 5 and 5 which are cut into a desired width and are divided into two strips are guided by the guide rolls 3 and wound up by the winding rolls 32 and 32 of the winding unit 30, respectively, to obtain a prepreg material product. Become a roll. Examples 1, 2, 3 and Comparative Example 1 Here, using the slitter device 1, the prepreg material having the same structure is cut based on the method of the present invention of cutting while cooling and the conventional method of cutting without cooling. did.
【００２７】プリプレグ材は、目付250 ｇ／ｃｍ2の高
弾性炭素繊維（６６重量％）を100℃における粘度が1.
８Ｐａ・ｓのマトリックス樹脂（エポキシ系熱硬化性樹
脂，４４重量％）に含浸させたものを使用し、表１に示
すように切断速度Ｈｖ１０ｍ／分あるいは３０ｍ／分で
幅150 ｍｍに切断した。その結果を、カッタ部２０の下
刃２１や上刃２２に粘着したマトリックス樹脂を清掃す
るため、スリッタ装置１を停止させた停止回数をプリプ
レグ材1000ｍ当たりの数（回／1000ｍ）として表１に示
した。また、表１にはプリプレグ材の切断部の冷却温度
（比較例では切断部における温度）と切断に伴う紙粉の
発生状態を併記した。The prepreg material is made of highly elastic carbon fiber (66% by weight) having a basis weight of 250 g / cm 2 and a viscosity at 100 ° C. of 1.
A resin impregnated with a matrix resin of 8 Pa · s (epoxy thermosetting resin, 44% by weight) was used, and as shown in Table 1, it was cut to a width of 150 mm at a cutting speed Hv of 10 m / min or 30 m / min. The results are shown in Table 1 as the number of times the slitter device 1 was stopped in order to clean the matrix resin adhered to the lower blade 21 and the upper blade 22 of the cutter unit 20 as the number per 1000 m of prepreg material (times / 1000 m). Indicated. Further, Table 1 also shows the cooling temperature of the cutting portion of the prepreg material (the temperature at the cutting portion in the comparative example) and the generation state of the paper dust accompanying the cutting.
【００２８】尚、表１において、本発明方法によるもの
を実施例１，２，３、従来の方法によるものを比較例１
とした。In Table 1, the method according to the present invention is used in Examples 1, 2 and 3, and the method according to the conventional method is used in Comparative Example 1.
And
【００２９】[0029]
【表１】 実施例１ 実施例２ 実施例３ 比較例１ 切断速度Ｈｖ １０ １０ ３０ １０ 冷却温度（℃） ３ １０ −１５ ２３ 停止回数(回/1000ｍ) 0.１ 0.５ 0.４ ４ 紙 粉 ◎ ◎ ◎ × ◎： 紙粉の発生殆どなし ×： 紙粉の発生大Table 1 Example 1 Example 2 Example 3 Comparative Example 1 Cutting speed Hv 10 10 30 10 Cooling temperature (° C) 3 10-15 23 Number of stops (times / 1000 m) 0.1 0.5 0.4 0.4 Paper dust ◎ ◎ ◎ × ◎: Almost no paper dust was generated ×: Large amount of paper dust was generated
【００３０】表１の結果から明らかなように、冷却しな
いでプリプレグ材を切断する従来の方法によれば、停止
回数が本発明方法の場合に比べて１桁も多く、紙粉の発
生も格段に少なかった。As is clear from the results shown in Table 1, according to the conventional method of cutting the prepreg material without cooling, the number of stoppages is one digit larger than that of the method of the present invention, and the generation of paper dust is significantly. There were few.
【００３１】また、カッタ部２０の下刃２１や上刃２２
を観察したところ、従来の切断方法では切断処理するプ
リプレグ材の処理長が増すにつれて、カッタの刃にマト
リックス樹脂が徐々に粘着して刃の汚れが増大してい
た。これに対し、本発明方法においては、プリプレグ材
５の切断部Ｐc を冷却したために、切断時に下刃２１や
上刃２２がプリプレグ材５のマトリックス樹脂から離型
し易く、殆ど樹脂の粘着も見られず、プリプレグ材５の
切断面はシャープであった。Further, the lower blade 21 and the upper blade 22 of the cutter unit 20.
In the conventional cutting method, the matrix resin gradually adhered to the blade of the cutter and the contamination of the blade increased as the processing length of the prepreg material to be cut increased in the conventional cutting method. On the other hand, in the method of the present invention, since the cutting portion P c of the prepreg material 5 is cooled, the lower blade 21 and the upper blade 22 are easily released from the matrix resin of the prepreg material 5 during cutting, and almost no resin sticks. Not seen, the cut surface of the prepreg material 5 was sharp.
【００３２】[0032]
【発明の効果】以上の説明で明らかなように、本発明の
細幅プリプレグ材の製造方法によれば、広幅プリプレグ
材ならびに下刃と上刃とを切断部において、１０℃以下
の冷却空気で冷却しながら切断するので、上刃や下刃へ
のマトリックス樹脂の粘着が抑制される結果、離型紙と
共にプリプレグ材を切断精度を保持しながらシャープに
切断することができ、しかも切断に伴う紙粉の発生を抑
制すると共にカッタ刃の清掃周期を延長することができ
る。As is apparent from the above description, according to the method for producing a narrow prepreg material of the present invention, the wide prepreg material and the lower and upper blades are cut with cooling air of 10 ° C. or less at the cutting portion. As it cuts while cooling, adhesion of the matrix resin to the upper and lower blades is suppressed.As a result, it is possible to sharply cut the prepreg material together with the release paper while maintaining the cutting accuracy, and the paper dust accompanying cutting It is possible to suppress the occurrence of the above-mentioned occurrence and to extend the cleaning cycle of the cutter blade.
【図１】本発明の細幅プリプレグ材の製造方法を実施す
るスリッタ装置の概略構成を示す正面図である。FIG. 1 is a front view showing a schematic configuration of a slitter device for carrying out a method for manufacturing a narrow prepreg material according to the present invention.
【図２】図１のスリッタ装置のカッタ部を拡大して示し
た正面図である。2 is an enlarged front view of a cutter unit of the slitter device of FIG. 1. FIG.
１ スリッタ装置 ２，３ ガイドロール ５ プリプレグ材 ５ａ プリプレグ ５ｂ 離型紙 １０ 巻出部 １２ 巻出ロール １３ ブレーキ ２０ カッタ部 ２１ 下刃 ２２ 上刃 ３０ 巻取部 ３２ 巻取ロール ３３ 巻取モータ ４０ 冷却部 ４１ 冷風発生装置 ４１ａ 分岐ノズル ４２ 制御装置 Ｃ 回転中心（下刃の） Ｐc 切断部（プリプレグ材５の） θ 巻付角1 Slitter Device 2, 3 Guide Roll 5 Prepreg Material 5a Prepreg 5b Release Paper 10 Unwinding Part 12 Unwinding Roll 13 Brake 20 Cutter Part 21 Lower Blade 22 Upper Blade 30 Winding Part 32 Winding Roll 33 Winding Motor 40 Cooling Unit 41 Cold Air Generator 41a Branch Nozzle 42 Controller C Center of Rotation (of Lower Blade) Pc Cutting Part (of Prepreg Material 5) θ Wrap Angle
Claims (1)
が５×10-2〜５Ｐａ・ｓの範囲にある樹脂をマトリック
ス樹脂とするプリプレグを離型紙上に担持してなる広幅
プリプレグ材を、巻付角を５度以下に設定して下刃に巻
き付けると共に、この下刃と協働して前記プリプレグ材
を切断する上刃を有するカッタを用いて所望の幅に切断
して細幅プリプレグ材を製造する際に、前記広幅プリプ
レグ材ならびに前記下刃と上刃とを切断部において、１
０℃以下に冷却することを特徴とする、細幅プリプレグ
材の製造方法。1. A wide prepreg material comprising a release paper and a prepreg containing a resin having a minimum viscosity in the range of 5 × 10 −2 to 5 Pa · s measured at a heating rate of 2 ° C./min. As a matrix resin. Is wound around a lower blade with a wrap angle set to 5 degrees or less, and is cut into a desired width by using a cutter having an upper blade that cuts the prepreg material in cooperation with the lower blade. When manufacturing a prepreg material, the wide prepreg material and the lower blade and the upper blade are cut at a cutting portion.
A method for producing a narrow prepreg material, which comprises cooling to 0 ° C. or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27931993A JP3339143B2 (en) | 1993-11-09 | 1993-11-09 | Method of manufacturing narrow prepreg material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27931993A JP3339143B2 (en) | 1993-11-09 | 1993-11-09 | Method of manufacturing narrow prepreg material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07124944A true JPH07124944A (en) | 1995-05-16 |
| JP3339143B2 JP3339143B2 (en) | 2002-10-28 |
Family
ID=17609521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27931993A Expired - Fee Related JP3339143B2 (en) | 1993-11-09 | 1993-11-09 | Method of manufacturing narrow prepreg material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3339143B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999055507A1 (en) * | 1998-04-24 | 1999-11-04 | Rainer Lebmeier | Method for producing a multilayer, laminated, prepreg planar formed body |
| JP2010023449A (en) * | 2008-07-24 | 2010-02-04 | Toray Ind Inc | Method for manufacturing fiber reinforced resin |
| JP2011036921A (en) * | 2009-08-06 | 2011-02-24 | Shinmaywa Industries Ltd | Cutting method of prepreg tape and slitter device |
| GB2482342A (en) * | 2010-07-30 | 2012-02-01 | Vestas Wind Sys As | Cooling of fibrous sheet for composite structure during machining |
| WO2014084120A1 (en) * | 2012-11-30 | 2014-06-05 | 三菱重工業株式会社 | Cutting apparatus for composite material |
| CN104015373A (en) * | 2014-05-30 | 2014-09-03 | 南京航空航天大学 | Preparation method of monodirectional preimpregnation narrowband for automatic filament placement |
| EP2900577A4 (en) * | 2012-09-26 | 2016-05-25 | Web Ind Inc | Improved prepreg tape slitting method and apparatus |
| JP2016153343A (en) * | 2016-06-01 | 2016-08-25 | 津田駒工業株式会社 | Feeding device of prepreg sheet in slitter device |
| JP2017119430A (en) * | 2015-12-25 | 2017-07-06 | 東レ株式会社 | Method for manufacturing notched prepreg |
| JP2018149065A (en) * | 2017-03-13 | 2018-09-27 | 王子ホールディングス株式会社 | Tension adjusting device and tension adjusting method for use in manufacturing apparatus of absorbent article |
| JP2021054566A (en) * | 2019-09-27 | 2021-04-08 | 株式会社東伸 | Slitter |
-
1993
- 1993-11-09 JP JP27931993A patent/JP3339143B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999055507A1 (en) * | 1998-04-24 | 1999-11-04 | Rainer Lebmeier | Method for producing a multilayer, laminated, prepreg planar formed body |
| JP2010023449A (en) * | 2008-07-24 | 2010-02-04 | Toray Ind Inc | Method for manufacturing fiber reinforced resin |
| JP2011036921A (en) * | 2009-08-06 | 2011-02-24 | Shinmaywa Industries Ltd | Cutting method of prepreg tape and slitter device |
| US9914191B2 (en) | 2010-07-30 | 2018-03-13 | Vestas Wind Systems A/S | Chamfering of laminate layers |
| GB2482342A (en) * | 2010-07-30 | 2012-02-01 | Vestas Wind Sys As | Cooling of fibrous sheet for composite structure during machining |
| WO2012013193A3 (en) * | 2010-07-30 | 2012-03-15 | Vestas Wind Systems A/S | Cooled machining of resin impregnated fibrous sheet |
| EP2900577A4 (en) * | 2012-09-26 | 2016-05-25 | Web Ind Inc | Improved prepreg tape slitting method and apparatus |
| WO2014084120A1 (en) * | 2012-11-30 | 2014-06-05 | 三菱重工業株式会社 | Cutting apparatus for composite material |
| CN104015373A (en) * | 2014-05-30 | 2014-09-03 | 南京航空航天大学 | Preparation method of monodirectional preimpregnation narrowband for automatic filament placement |
| JP2017119430A (en) * | 2015-12-25 | 2017-07-06 | 東レ株式会社 | Method for manufacturing notched prepreg |
| JP2016153343A (en) * | 2016-06-01 | 2016-08-25 | 津田駒工業株式会社 | Feeding device of prepreg sheet in slitter device |
| JP2018149065A (en) * | 2017-03-13 | 2018-09-27 | 王子ホールディングス株式会社 | Tension adjusting device and tension adjusting method for use in manufacturing apparatus of absorbent article |
| JP2021054566A (en) * | 2019-09-27 | 2021-04-08 | 株式会社東伸 | Slitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3339143B2 (en) | 2002-10-28 |
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