JPH07258440A - Production of prepreg, method for removing residual resin on mold release paper and apparatus for removing - Google Patents
Production of prepreg, method for removing residual resin on mold release paper and apparatus for removingInfo
- Publication number
- JPH07258440A JPH07258440A JP6057743A JP5774394A JPH07258440A JP H07258440 A JPH07258440 A JP H07258440A JP 6057743 A JP6057743 A JP 6057743A JP 5774394 A JP5774394 A JP 5774394A JP H07258440 A JPH07258440 A JP H07258440A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- release paper
- prepreg
- transfer
- peeled
- 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
- Treatments Of Macromolecular Shaped Articles (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱硬化性プリプレグの
製造方法並びに離型紙上の残留樹脂の除去方法及び除去
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a thermosetting prepreg, a method for removing residual resin on a release paper, and a removing apparatus.
【０００２】[0002]
【従来の技術】従来から、その両面がシリコンにて含浸
された上質紙である連続した１枚の離型紙の片面に樹脂
を塗布し、該樹脂塗布面側にシート状に配列された複数
の強化繊維を配置し、さらに片面に樹脂を塗布した別の
離型紙を重ね合わせ、加熱、加圧等を行うことで該シー
ト状物に樹脂を含浸させ、次に冷却した後一方の離型紙
を剥離した後にもう一方の離型紙とシート状物を合わさ
ったままロール状に巻き取る熱硬化性プリプレグの製造
方法が知られている。2. Description of the Related Art Conventionally, a resin is applied to one surface of a continuous release paper, which is a high-quality paper impregnated with silicon on both sides, and a plurality of sheets are arranged in a sheet shape on the resin application surface side. Reinforcing fibers are arranged, and another release paper coated with resin on one side is overlaid, and the sheet material is impregnated with the resin by heating, pressurizing, etc., and then one release paper is cooled. There is known a method for producing a thermosetting prepreg in which after peeling, the other release paper and the sheet-like material are wound together in a roll shape.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のプリプレグ
の製造方法には以下の問題がある。すなわち、前述した
プリプレグに於いて、離型紙とプリプレグの吸湿性に違
いがあり、離型紙に皺が発生することから、高価な表裏
両面シリコン含浸離型紙の使用は免れない。一方の剥離
した離型紙には残留樹脂が付着しており、再度該離型紙
に樹脂を塗布する事が困難であったため、該離型紙は通
常１回使用後は廃棄処分を行い、結果としてプリプレグ
が高価なものとなりコストダウンが要望されていた。ま
た、この廃棄された離型紙はシリコン含浸により焼却処
分ができず、埋め立て処理になる等、産業廃棄物の減少
化面からも問題であった。The above-mentioned conventional method for manufacturing a prepreg has the following problems. That is, in the above-mentioned prepreg, there is a difference in hygroscopicity between the release paper and the prepreg, and wrinkles are generated on the release paper, so that it is inevitable to use expensive front and back double-sided silicon-impregnated release paper. Residual resin adhered to one of the release papers that had been peeled off, and it was difficult to apply the resin to the release paper again.Therefore, the release paper was normally discarded after one use, resulting in prepreg. Became expensive, and there was a demand for cost reduction. Further, this discarded release paper cannot be incinerated due to the impregnation with silicon, and it becomes a landfill treatment, which is also a problem from the viewpoint of reducing industrial waste.
【０００４】本発明は、離型紙の再利用を可能とするこ
とによって、プリプレグのコストダウンと産業廃棄物の
減少化を実現することのできるプリプレグの製造方法並
びに離型紙上の残留樹脂の除去方法及び除去装置の提供
を課題とする。The present invention makes it possible to reuse the release paper, thereby reducing the cost of the prepreg and reducing the industrial waste, and a method for removing the residual resin on the release paper. And to provide a removing device.
【０００５】[0005]
【課題を解決するための手段】本発明は、シート状に配
列された複数の強化繊維、もしくは適正巾に広げられた
のちシート状に配列された複数の強化繊維束の上面及び
下面に、あらかじめ片面に樹脂が塗布された離型紙を重
ね合わせ、加熱、加圧して樹脂を強化繊維シートもしく
は強化繊維束シートに含浸し、一方の離型紙を剥離する
プリプレグの製造方法に於いて、剥離した離型紙上に残
留した樹脂を除去し、その後樹脂を除去した面か、もし
くはもう一方の面に樹脂を塗布した離型紙を、プリプレ
グの製造に再度用いることを特徴とするプリプレグの製
造方法、及び剥離した離型紙上の残留した樹脂を、別の
樹脂フィルムに転写させることを特徴とする離型紙上の
残留樹脂の除去方法、並びに剥離された離型紙上に残留
した樹脂を加熱する手段と、転写用樹脂フィルムを連続
的に巻き出す手段と、剥離され加熱された離型紙の樹脂
残留面と転写用樹脂フィルム面を重ねた状態で加圧する
手段と、残留樹脂が除去された離型紙を連続的に巻き取
る手段と、樹脂を転写した転写用樹脂フィルムを連続的
に巻き取る手段を有することを特徴とする離型紙上の残
留樹脂の除去装置を要旨とするものである。According to the present invention, a plurality of reinforcing fibers arranged in a sheet shape or a plurality of reinforcing fiber bundles arranged in a sheet shape after being spread to an appropriate width are previously formed on the upper surface and the lower surface of the bundle. In the method of manufacturing a prepreg in which a release paper coated with a resin is superposed on one surface, the reinforcing fiber sheet or the reinforcing fiber bundle sheet is impregnated with heat and pressure, and one release paper is peeled off, A method for producing a prepreg, characterized in that the resin remaining on the pattern paper is removed, and then the release paper having the resin removed surface or the resin applied to the other surface is used again for the production of the prepreg, and peeling. The residual resin on the release paper is transferred to another resin film, and the residual resin on the release paper is removed, and the residual resin on the release paper is heated. Means, a means for continuously unwinding the transfer resin film, a means for pressurizing the resin residual surface of the peeled and heated release paper and the transfer resin film surface in an overlapped state, and a release resin for removing residual resin. The present invention is directed to an apparatus for removing residual resin on a release paper, which has means for continuously winding a pattern paper and means for continuously winding a transfer resin film onto which a resin has been transferred.
【０００６】[0006]
【作用】一方の剥離した離型紙の付着した残留樹脂の除
去に成功することで、再度該離型紙に樹脂を塗布する事
が可能となり、従って該離型紙の通常１回使用後に廃棄
処分が行なわれていたところを複数回の利用が可能とな
り、結果としてプリプレグのコストダウンを可能とでき
る。また同時に離型紙の再利用により産業廃棄物の減少
化をも達成することができる。By successfully removing the residual resin adhered to one of the peeled release papers, it becomes possible to apply the resin to the release paper again. Therefore, the release paper is normally discarded once and then discarded. It can be used multiple times, and as a result, the cost of prepreg can be reduced. At the same time, it is possible to reduce industrial waste by reusing release paper.
【０００７】本発明に於ける対象となる強化繊維は、連
続繊維から成る強化繊維、もしくは連続繊維から成る強
化繊維束で、炭素繊維、有機高弾性繊維（例えばアラミ
ド繊維等）、ガラス繊維、アルミナ繊維、炭化珪素繊
維、タングステンカーバイド、ボロン繊維等の高強度、
高弾性率繊維である。またこれらの強化繊維もしくは強
化繊維束は、同じプリプレグについて１種類のものを使
用しても良いし、複数種類のものを規則的に、または不
規則的に並べて使用しても良い。通常、特定方向に比強
度、比弾性率が高いことを要求される用途には単一方向
プリプレグが最も適しているが、あらかじめ長繊維マッ
トや織物などのシート形態に加工したものを使用するこ
とも可能である。The reinforcing fibers to be used in the present invention are reinforcing fibers composed of continuous fibers or reinforcing fiber bundles composed of continuous fibers, such as carbon fibers, organic high elasticity fibers (eg aramid fibers etc.), glass fibers and alumina. High strength of fiber, silicon carbide fiber, tungsten carbide, boron fiber, etc.
It is a high modulus fiber. As for these reinforcing fibers or reinforcing fiber bundles, one kind may be used for the same prepreg, or a plurality of kinds may be used in a regular or irregular arrangement. Normally, unidirectional prepreg is most suitable for applications that require high specific strength and specific elastic modulus in a specific direction, but use a sheet that has been previously processed into a sheet form such as long fiber mat or woven fabric. Is also possible.
【０００８】離型紙に塗布され、後に前述のシート状に
配列された強化繊維もしくは強化繊維束に含浸される熱
硬化性樹脂としては、エポキシ樹脂、ポリイミド樹脂、
マレイミド樹脂、アセチレン末端を有する樹脂、ビニル
末端を有する樹脂、シアン酸エステル末端を有する樹脂
等が挙げられる。これらは一般に硬化剤や硬化触媒と組
み合わせて用いることができる。The thermosetting resin which is applied to the release paper and is subsequently impregnated into the reinforcing fibers or reinforcing fiber bundles arranged in the above-mentioned sheet form is epoxy resin, polyimide resin,
Examples thereof include a maleimide resin, a resin having an acetylene terminal, a resin having a vinyl terminal, and a resin having a cyanate ester terminal. These can generally be used in combination with a curing agent or a curing catalyst.
【０００９】本発明に適した熱硬化性樹脂はエポキシ樹
脂である。具体的には、アミン類を前駆体とするエポキ
シ樹脂として、テトラグリシジンジアミノジフェニルメ
タン、トリグリシジン−ｐ−アミノフェノール、トリグ
リシジン−ｍ−アミノフェノール、トリグリシジルアミ
ノフレゾールの各種異性体、フェノール類を前駆体とす
るエポキシ樹脂として、ビスフェノールＡ型エポキシ樹
脂、ビスフェノールＦ型エポキシ樹脂、ビスフェノール
Ｓ型エポキシ樹脂、フェノールノボラック型エポキシ樹
脂、クレゾールノボラック型エポキシ樹脂、炭素炭素二
重結合を有する化合物を前駆体とするエポキシ樹脂とし
ては脂環式エポキシ樹脂が、挙げられるがこれに限定さ
れない。A thermosetting resin suitable for the present invention is an epoxy resin. Specifically, as epoxy resins having amines as precursors, tetraglycidin diaminodiphenylmethane, triglycidin-p-aminophenol, triglycidin-m-aminophenol, various isomers of triglycidylaminofresol, and phenols are precursors. As the epoxy resin to be a body, a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, a bisphenol S type epoxy resin, a phenol novolac type epoxy resin, a cresol novolac type epoxy resin, and a compound having a carbon-carbon double bond are used as precursors. Epoxy resins include, but are not limited to, alicyclic epoxy resins.
【００１０】エポキシ樹脂はエポキシ硬化剤と組み合わ
せて用いられる。エポキシ硬化剤はエポキシ基と反応し
うる活性基を有するものなら、該エポキシ硬化剤を用い
ることができる。好ましくは、アミン基、酸無水物基、
アジド基を有する化合物が適している。具体的にはジシ
アンジアミド、ジアミノジフェニルスルフォン、の各種
異性体、アミノ安息香酸エステル類、が適している。具
体的に説明すると、プリプレグの保存性に関してはジシ
アンジアミドが、良好な耐熱性に関してはジアミノジフ
ェニルスルフォンに耐熱性で劣るものの、アミノ安息香
酸エステル類としては、トリメチレングリコールジ−ｐ
−アミノベンゾエートやネオペンチルグリコールジ−ｐ
−アミノベンゾエートが用途に応じて選択して用いられ
る。Epoxy resins are used in combination with epoxy hardeners. If the epoxy curing agent has an active group capable of reacting with the epoxy group, the epoxy curing agent can be used. Preferably, an amine group, an acid anhydride group,
Compounds having an azido group are suitable. Specifically, dicyandiamide, various isomers of diaminodiphenylsulfone, and aminobenzoic acid esters are suitable. More specifically, although dicyandiamide is inferior in heat resistance to diaminodiphenyl sulfone in terms of good heat resistance and is inferior in heat resistance to prepreg, trimethylene glycol di-p is used as aminobenzoic acid ester.
-Aminobenzoate and neopentyl glycol di-p
-Aminobenzoate is selected and used according to the application.
【００１１】本発明に用いることが可能な転写用樹脂フ
ィルムは例えば、ポリエチレンフィルム、ポリプロピレ
ンフィルム、ポリエチレンテレフタレートフィルム、ポ
リカーボネートフィルムのようなものである。この中で
も樹脂転写時の加熱に対して適した転写用樹脂フィルム
として２軸延伸ポリプロピレンフィルムが好ましい。該
フィルム厚みは２０〜１５０μｍが好ましいが、フィル
ム厚みはこれらに限定されるものではない。The transfer resin film that can be used in the present invention is, for example, a polyethylene film, a polypropylene film, a polyethylene terephthalate film or a polycarbonate film. Among these, a biaxially oriented polypropylene film is preferable as a transfer resin film suitable for heating during resin transfer. The film thickness is preferably 20 to 150 μm, but the film thickness is not limited thereto.
【００１２】熱硬化性樹脂は、例えば加熱容器の内部で
溶融され真空ポンプ等による真空脱気後ギアポンプ等に
てスタティックミキサ等の混練機に送り込まれる。一方
では、熱硬化性樹脂硬化剤は、ホモミキサ等の攪拌分散
機内部で１〜２０重量％の範囲で熱硬化性樹脂に分散さ
れ、その後ギアポンプ等にて熱硬化性樹脂が送り込まれ
ている該スタティックミキサ等の混練機内部へ、該熱硬
化性樹脂と混練されるよう送り込まれる。熱硬化性樹脂
は、該硬化剤が混練された状態で離型紙上に、ナイフコ
ータ等にて塗布される。The thermosetting resin is melted in, for example, the inside of a heating container, and is degassed by vacuum using a vacuum pump or the like, and then sent to a kneader such as a static mixer by a gear pump or the like. On the other hand, the thermosetting resin curing agent is dispersed in the thermosetting resin in the range of 1 to 20% by weight inside a stirring and dispersing machine such as a homomixer, and then the thermosetting resin is fed by a gear pump or the like. It is fed into the kneading machine such as a static mixer so as to be kneaded with the thermosetting resin. The thermosetting resin is applied to the release paper in a state where the curing agent is kneaded by a knife coater or the like.
【００１３】熱硬化性樹脂のフィルムもしくは離型紙上
への塗布方法は、例えばナイフコータを用いる方法、押
出機もしくはギアポンプとＴダイを用いる方法、一本も
しくは複数のロールより成るロールコータを用いる方
法、その他の各種塗布方法を用いることが可能であり、
これらの１種類に限定されるものではない。The method of applying the thermosetting resin onto the film or release paper is, for example, a method using a knife coater, a method using an extruder or a gear pump and a T-die, a method using a roll coater composed of one or a plurality of rolls, It is possible to use other various coating methods,
It is not limited to one of these.
【００１４】樹脂を塗布された離型紙の該熱硬化性樹脂
塗布面側に、シート状に配列された強化繊維もしくは強
化繊維束を配置した３層シート状物は、該熱硬化性樹脂
の軟化点以上に加熱されたロール群が接触もしくは一定
のクリアランスを有するように配置されたロール群間を
通過され、繊維及び繊維間に熱硬化性樹脂を含浸された
後、表面を平滑化され冷却されて引き取られる。A three-layer sheet material in which a reinforcing fiber or a reinforcing fiber bundle arranged in a sheet is arranged on the thermosetting resin application side of a release paper coated with a resin is a softening of the thermosetting resin. Rolls heated above a point are contacted or passed between rolls arranged to have a certain clearance, impregnated with a thermosetting resin between the fibers and the fibers, and then the surface is smoothed and cooled. Will be taken over.
【００１５】３層シート状物を冷却する方法について
は、内部に冷却水が通水された冷却プレートや冷却ロー
ル等に３層シート状物を圧接する方法や、３層シート状
物に直接、空気を吹き付ける方法等がある。冷却後の３
層シート状物における樹脂粘度は、該樹脂が流動性を保
ち３層シート状物端面より樹脂漏れを発生することとな
らない程度かまたは該程度以下が好ましく、３層シート
状物冷却部の冷却能力は、シート状強化繊維もしくは強
化繊維束、および熱硬化性樹脂目付け、３層シート状物
寸法さらに機械速度により決定されることが好ましい。As for the method for cooling the three-layer sheet, a method of pressing the three-layer sheet to a cooling plate, a cooling roll or the like in which cooling water is passed, or a method of directly contacting the three-layer sheet, There is a method of blowing air. 3 after cooling
The resin viscosity of the three-layer sheet material is preferably such that the resin maintains fluidity and does not cause resin leakage from the end surface of the three-layer sheet material, or less than that level, and the cooling capacity of the three-layer sheet material cooling unit. Is preferably determined by the sheet-like reinforcing fiber or reinforcing fiber bundle, the thermosetting resin basis weight, the size of the three-layer sheet material, and the machine speed.
【００１６】本発明の転写用樹脂フィルムを用いた離型
紙上からの残留樹脂の除去装置に於いて、前述の冷却さ
れた３層シート状物より剥離した１枚の離型紙は、例え
ば加熱ロールによって、該離型紙のシート状強化繊維も
しくは強化繊維束と接していた面とは反対側の面を、残
留樹脂の軟化点以上に加熱される。この加熱方法はこれ
に限定されるわけではなく他の手段を用いることは何ら
差し支えない。また加熱温度、ロール寸法等は、使用す
る樹脂の種類や離型紙の種類、機械速度等から決定され
るべきである。In the apparatus for removing residual resin from a release paper using the transfer resin film of the present invention, one release paper peeled from the above-mentioned cooled three-layer sheet material is, for example, a heating roll. Thus, the surface of the release paper opposite to the surface in contact with the sheet-shaped reinforcing fibers or the reinforcing fiber bundle is heated to the softening point of the residual resin or higher. This heating method is not limited to this, and any other means may be used. The heating temperature, roll size, etc. should be determined from the type of resin used, the type of release paper, the machine speed, etc.
【００１７】一方で転写用樹脂フィルムは、パウダーブ
レーキやエアーブレーキ等の巻き出し抵抗により張力を
かけて連続的に巻き出される。次に該転写用樹脂フィル
ムは、剥離され加熱された１枚の離型紙の、シート状強
化繊維もしくは強化繊維束と接していた面に接するよう
に配置され、同時に、もしくはその後にニップロール等
により互いに圧接される。該ニップロールは該離型紙上
に残留した軟化点以上に加熱された樹脂を軟化点以下に
冷却することがないよう、該ニップロールの少なくとも
一方のロールを加熱可能なロールとすることが好まし
い。On the other hand, the transfer resin film is continuously unwound by applying tension by unwinding resistance of a powder brake or an air brake. Next, the transfer resin film is arranged so as to come into contact with the surface of one release paper which has been peeled off and heated and which was in contact with the sheet-like reinforcing fibers or the reinforcing fiber bundle, and at the same time or thereafter, they are mutually separated by a nip roll or the like. Pressed. It is preferable that at least one of the nip rolls is a heatable roll so that the resin heated above the softening point remaining on the release paper is not cooled below the softening point.
【００１８】互いに圧接された離型紙と転写用樹脂フィ
ルムは、剥離された後、別々に巻き取られる。該転写用
樹脂フィルムは、前述した通り幾種類かの材料を選定す
ることは可能であるが、好ましくは巻き出し張力をかけ
られ、さらに加熱を施されても離型紙上の残留樹脂の除
去性能、該転写用樹脂フィルム自体の溶融等に遜色のな
い、極力安価な材料を選定されるべきである。本発明者
が検討を重ねた結果、転写用樹脂フィルムの転写面表面
は、シート状強化繊維もしくは強化繊維束に含浸される
熱硬化性樹脂の種類により改良処理されることが有効で
あることが判明した。該改良処理は例えば、プライマー
処理、フレーム処理、オゾン処理、電気処理（コロナ放
電処理）のようなものであり、またこれらに限定はされ
ない。前述した転写用樹脂フィルムの条件を満たす、こ
れらの表面処理を施された、金額的にも安価に入手でき
るフィルムとして、２軸延伸ポリプロピレンフィルムの
表面コロナ処理品が挙げられる。該延伸フィルムの厚さ
は２０〜１５０μｍが好ましく、２５〜５０μｍがさら
に好ましい。The release paper and the transfer resin film, which are in pressure contact with each other, are peeled off and then separately wound. For the transfer resin film, it is possible to select several kinds of materials as described above, but it is preferable to remove the residual resin on the release paper even if it is subjected to unwinding tension and further heated. However, it is necessary to select a material that is as inexpensive as possible and is as good as the melting of the transfer resin film itself. As a result of repeated studies by the present inventor, it is effective that the transfer surface of the transfer resin film is improved by the type of thermosetting resin impregnated in the sheet-like reinforcing fibers or reinforcing fiber bundles. found. The improvement treatment is, for example, a primer treatment, a flame treatment, an ozone treatment, an electric treatment (corona discharge treatment), and is not limited to these. As a film which has been subjected to the above-mentioned surface treatment and which can be obtained at a low price in terms of cost, which satisfies the conditions of the resin film for transfer described above, a surface corona-treated product of a biaxially oriented polypropylene film can be mentioned. The thickness of the stretched film is preferably 20 to 150 μm, more preferably 25 to 50 μm.
【００１９】次に本発明を図面に示した、複数の連続繊
維からなる繊維シートに適した代表的実施態様にて説明
する。図１に示すごとく、本発明を実施するための製造
装置は繊維供給部１、離型紙供給Ａ部２Ａ、離型紙供給
Ｂ部２Ｂ、樹脂含浸部３、引取部４、残留樹脂除去装置
部５とから成る。The present invention will now be described by way of a representative embodiment shown in the drawings and suitable for a fiber sheet composed of a plurality of continuous fibers. As shown in FIG. 1, the manufacturing apparatus for carrying out the present invention includes a fiber supply unit 1, a release paper supply A unit 2A, a release paper supply B unit 2B, a resin impregnation unit 3, a take-up unit 4, and a residual resin removal device unit 5. It consists of and.
【００２０】繊維供給部１は、複数の連続繊維を供給す
る手段、例えば複数のボビンと、繊維巻き出し時の張力
を調節する機構、該繊維群をシート状に並べる機構、及
びそれらを支持する架台を有する。離型紙供給Ａ部２Ａ
は、離型紙が装着された巻き出し軸６Ａを有する。樹脂
塗工Ａ部２Ａにおいて、離型紙が装着される回転可能な
巻き出し軸６Ａは、該離型紙の巻き出し張力を与えるた
めの、巻き出し軸６Ａに回転抵抗を発生させる、例えば
エアーブレーキ、パウダーブレーキなどを有する。The fiber supply unit 1 is a means for supplying a plurality of continuous fibers, for example, a plurality of bobbins, a mechanism for adjusting the tension when the fibers are unwound, a mechanism for arranging the fiber groups in a sheet shape, and supporting them. It has a pedestal. Release paper supply A section 2A
Has an unwinding shaft 6A on which release paper is mounted. In the resin coating A portion 2A, the rotatable unwinding shaft 6A on which the release paper is mounted generates rotation resistance on the unwinding shaft 6A for applying the unwinding tension of the release paper, for example, an air brake, It has a powder brake.
【００２１】離型紙供給Ｂ部２Ｂは、図１に示す位置
か、もしくはその周辺に設置されることが好ましい。離
型紙供給Ｂ部２Ｂを構成する各部分の機構及び機能は各
々離型紙供給Ａ部２Ａと対応し、かつ同様であり、前述
される通りである。樹脂含浸部３は、加熱ロール群７
と、駆動チェーン８と、駆動モータ９を有し、該樹脂含
浸部３において、離型紙供給部２Ａ，２Ｂより送り出さ
れた各々１枚の離型紙と、繊維供給部１より送り出され
たシート状強化繊維もしくは強化繊維束は、加熱された
ロール群７により図のように挟み込まれた状態となり、
離型紙に塗布された熱硬化性樹脂はこの部分で加熱、加
圧され該シート状強化繊維もしくは強化繊維束に含浸さ
れる。The release paper supply B section 2B is preferably installed at the position shown in FIG. 1 or in the vicinity thereof. The mechanism and function of each part constituting the release paper supply B section 2B correspond to and are similar to those of the release paper supply A section 2A, and are as described above. The resin impregnation part 3 includes a heating roll group 7
And a drive chain 8 and a drive motor 9, and in the resin impregnating section 3, one release sheet fed from each of the release sheet feeding sections 2A and 2B and a sheet shape fed from the fiber feeding section 1. The reinforced fiber or the reinforced fiber bundle is sandwiched by the heated roll group 7 as shown in the figure,
The thermosetting resin applied to the release paper is heated and pressed at this portion to impregnate the sheet-shaped reinforcing fibers or reinforcing fiber bundle.
【００２２】加熱ロール群７は、例えばヒータを内蔵さ
れているか、または加熱状態の熱媒を通水できる構造で
あることが好ましく、これらの熱源の温度がコントロー
ル可能であることがさらに好ましい。該ロール群は、使
用する熱硬化性樹脂の種類によりその本数、位置が最適
化されるべきであることは言うまでもない。駆動モータ
９は、１本のチェーン８〜スプロケット、もしくはこれ
と同等の駆動伝達手段により、ロール群７に回転駆動を
与える役割を持つ。駆動モータ９は、その回転速度が変
速可能であることが好ましく、例えばチェーン８〜スプ
ロケットと場合により減速機を用いて、ロール群の周速
を調整する機構であることがさらに好ましい。The heating roll group 7 preferably has, for example, a built-in heater or a structure capable of passing a heating medium in a heated state, and more preferably the temperature of these heat sources can be controlled. Needless to say, the number and position of the rolls should be optimized depending on the type of thermosetting resin used. The drive motor 9 has a role of giving rotational drive to the roll group 7 by one chain 8 to a sprocket, or drive transmission means equivalent thereto. The drive motor 9 is preferably capable of changing its rotation speed, and more preferably a mechanism for adjusting the peripheral speed of the roll group by using, for example, the chain 8 to the sprocket and, if necessary, a speed reducer.
【００２３】引取部４は、冷却部１０、製品巻き取り軸
１１、駆動モータ１２、その他フレーム類を有する。製
品巻き取り軸１１は、プリプレグシートを巻き取る、例
えばリールの様なものを装着可能な巻き取り軸と該軸受
けから構成される。該製品巻き取り軸は、チェーン〜ス
プロケット、もしくはこれと同等の駆動伝達手段により
駆動モータ１２の回転駆動を伝達される。図１は、製品
巻き取り軸１１が１軸からなる場合を示したもので、製
品巻き取り軸１１が多軸から構成されていても何等差し
支えない。The take-up unit 4 has a cooling unit 10, a product take-up shaft 11, a drive motor 12, and other frames. The product take-up shaft 11 is composed of a take-up shaft that can take up a prepreg sheet, for example, a reel, and a bearing. The product take-up shaft receives the rotational drive of the drive motor 12 by a chain to a sprocket, or a drive transmission means equivalent to this. FIG. 1 shows a case where the product winding shaft 11 is composed of one shaft, and the product winding shaft 11 may be composed of multiple shafts.
【００２４】駆動モータ１２は、１本のチェーン〜スプ
ロケット、もしくはこれと同等の駆動伝達手段により、
前述の製品巻き取り軸に回転駆動を与える役割を持つ。
駆動モータ１２は、その回転速度が変速可能であること
が好ましく、例えばチェーン〜スプロケットと場合によ
り減速機を用いて、該製品巻き取り軸の周速を調整する
機構であることがさらに好ましい。The drive motor 12 is composed of one chain to a sprocket, or a drive transmission means equivalent to this.
It has a role of giving rotational drive to the product take-up shaft described above.
The drive motor 12 is preferably capable of changing its rotation speed, and more preferably a mechanism for adjusting the peripheral speed of the product winding shaft by using, for example, a chain to a sprocket and a speed reducer as the case may be.
【００２５】残留樹脂除去装置部５は、転写用樹脂フィ
ルムが装着された巻き出し軸１３、剥離した離型紙の加
熱を行う加熱ロール１４、転写用樹脂フィルムと剥離し
た離型紙の圧接を行うニップロール１５、駆動モータ１
６、該離型紙巻き取り軸１７、駆動モータ１８、転写用
樹脂フィルム巻き取り軸１９、駆動モータ２０より構成
される。転写用樹脂フィルムが装着される回転可能な巻
き出し軸１３は、該樹脂フィルムの巻き出し張力を与え
るための、巻き出し軸１３に回転抵抗を発生させる、例
えばエアーブレーキ、パウダーブレーキなどを有する。The residual resin removing device section 5 includes an unwinding shaft 13 on which a transfer resin film is mounted, a heating roll 14 for heating the peeled release paper, and a nip roll for press-contacting the transfer resin film and the peeled release paper. 15, drive motor 1
6, a release paper winding shaft 17, a drive motor 18, a transfer resin film winding shaft 19, and a drive motor 20. The rotatable unwinding shaft 13 on which the transfer resin film is mounted has, for example, an air brake, a powder brake, or the like, which generates rotational resistance on the unwinding shaft 13 for applying the unwinding tension of the resin film.
【００２６】剥離した離型紙の加熱を行う加熱ロール１
４により、該離型紙はシート状強化繊維もしくは強化繊
維束と接していた面とは反対側の面を、残留樹脂の軟化
点以上に加熱される。加熱ロール１４は、例えばヒータ
を内蔵されているか、または加熱状態の熱媒を通水でき
る構造であることが好ましく、これらの熱源の温度がコ
ントロール可能であることがさらに好ましい。また該加
熱ロール１４は後述する駆動モータ１６により駆動され
ても良い。A heating roll 1 for heating the peeled release paper.
According to 4, the surface of the release paper opposite to the surface in contact with the sheet-like reinforcing fiber or the reinforcing fiber bundle is heated to the softening point of the residual resin or higher. The heating roll 14 preferably has, for example, a heater built therein or a structure capable of passing a heating medium in a heated state, and it is more preferable that the temperatures of these heat sources can be controlled. The heating roll 14 may be driven by a drive motor 16 described later.
【００２７】巻き出し軸１３より連続的に巻き出された
転写用樹脂フィルムと、加熱ロール１４より送り出され
た加熱された離型紙は、駆動モータ１６により駆動され
たニップロール１５により図のように挟み込まれた状態
となり、離型紙上に残留している熱硬化性樹脂はこの部
分で加圧され、転写用樹脂フィルム側に転写される。転
写用樹脂フィルムは、離型紙と接する面が前述した表面
改質を施されていることが特に好ましい。また該ニップ
ロール１９は該離型紙上に残留した軟化点以上に加熱さ
れた樹脂を軟化点以下に冷却することがないよう、該ニ
ップロールの少なくとも一方のロールを加熱可能なロー
ルとすることが好ましい。従って、該ニップロール１４
は、例えばヒータを内蔵されているか、または加熱状態
の熱媒を通水できる構造であることが好ましく、これら
の熱源の温度がコントロール可能であることがさらに好
ましい。The transfer resin film continuously unwound from the unwinding shaft 13 and the heated release paper sent out from the heating roll 14 are sandwiched by the nip roll 15 driven by the drive motor 16 as shown in the figure. The thermosetting resin remaining on the release paper is pressed at this portion and transferred to the transfer resin film side. It is particularly preferable that the surface of the transfer resin film that contacts the release paper is subjected to the above-mentioned surface modification. Further, it is preferable that at least one of the nip rolls 19 is a heatable roll so that the resin heated above the softening point remaining on the release paper is not cooled below the softening point. Therefore, the nip roll 14
Preferably has a heater built-in or a structure capable of passing a heating medium in a heated state, and it is more preferable that the temperatures of these heat sources can be controlled.
【００２８】互いに圧接された離型紙と転写用樹脂フィ
ルムは、剥離された後、別々に巻き取られる。離型紙巻
き取り軸１７は、残留樹脂を除去された離型紙を巻き取
る、例えばリールの様なものを装着可能な巻き取り軸と
該軸受けから構成される。該巻き取り軸は、チェーン〜
スプロケット、もしくはこれと同等の駆動伝達手段によ
り駆動モータ１８の回転駆動を伝達される。図１は、離
型紙巻き取り軸１７が１軸からなる場合を示したもの
で、該軸１７が多軸から構成されていても何等差し支え
ない。The release paper and the transfer resin film, which are in pressure contact with each other, are peeled off and then separately wound. The release paper take-up shaft 17 is composed of a take-up shaft for taking up the release paper from which the residual resin has been removed, for example, a take-up shaft on which a reel or the like can be mounted, and the bearing. The winding shaft is a chain ~
The rotational drive of the drive motor 18 is transmitted by a sprocket or a drive transmission means equivalent thereto. FIG. 1 shows a case where the release paper take-up shaft 17 is composed of one shaft, and it does not matter if the shaft 17 is composed of multiple shafts.
【００２９】駆動モータ１８は、１本のチェーン〜スプ
ロケット、もくしはこれと同等の駆動伝達手段により、
前述の製品巻き取り軸に回転駆動を与える役割を持つ。
駆動モータ１２は、その回転速度が変速可能であること
が好ましく、例えばチェーン〜スプロケットと場合によ
り減速機を用いて、該製品巻き取り軸の周速を調整する
機構であることがさらに好ましい。The drive motor 18 is composed of a chain, a sprocket, and a drive transmission means equivalent to this.
It has a role of giving rotational drive to the product take-up shaft described above.
The drive motor 12 is preferably capable of changing its rotation speed, and more preferably a mechanism for adjusting the peripheral speed of the product winding shaft by using, for example, a chain to a sprocket and a speed reducer as the case may be.
【００３０】転写用樹脂フィルム巻き取り軸１９は、残
留樹脂を転写された転写用樹脂フィルムを巻き取る、例
えばリールの様なものを装着可能な巻き取り軸と該軸受
けから構成される。該巻き取り軸は、チェーン〜スプロ
ケット、もしくはこれと同等の駆動伝達手段により駆動
モータ２０の回転駆動を伝達される。図１は、該樹脂フ
ィルム巻き取り軸１９が１軸からなる場合を示したもの
で、該軸１９が多軸から構成されていても何等差し支え
ない。The transfer resin film take-up shaft 19 is composed of a take-up shaft for taking up the transfer resin film on which the residual resin is transferred, for example, a take-up shaft on which a reel or the like can be mounted, and the bearing. The rotational drive of the drive motor 20 is transmitted to the winding shaft by a chain to a sprocket, or a drive transmission means equivalent to this. FIG. 1 shows a case where the resin film winding shaft 19 is composed of one shaft, and there is no problem even if the shaft 19 is composed of multiple shafts.
【００３１】駆動モータ２０は、１本のチェーン〜スプ
ロケット、もしくはこれと同等の駆動伝達手段により、
前述の製品巻き取り軸に回転駆動を与える役割を持つ。
駆動モータ２０は、その回転速度が変速可能であること
が好ましく、例えばチェーン〜スプロケットと場合によ
り減速機を用いて、該製品巻き取り軸の周速を調整する
機構であることがさらに好ましい。The drive motor 20 is composed of one chain to a sprocket, or drive transmission means equivalent to this.
It has a role of giving rotational drive to the product take-up shaft described above.
The drive motor 20 is preferably capable of changing its rotation speed, and more preferably a mechanism that adjusts the peripheral speed of the product winding shaft by using, for example, a chain to a sprocket and, if necessary, a speed reducer.
【００３２】以上、本発明の実施態様について説明した
が、これらに限定されるものではなく、使用する強化繊
維の種類、熱硬化性樹脂の種類等により、各ユニットの
同様の機能の範囲での最適な装置構成とする事は何等差
し支えない。Although the embodiments of the present invention have been described above, the present invention is not limited to these, and may be within the same function range of each unit depending on the type of reinforcing fiber and the type of thermosetting resin used. There is no problem in having an optimal device configuration.
【００３３】[0033]
【発明の効果】一方の剥離した離型紙の付着した残留樹
脂の除去に成功することで、再度該離型紙に樹脂を塗布
する事が可能となり、従って該離型紙の通常１回使用後
に廃棄処分が行なわれていたところを数回の利用が可能
となり、結果としてプリプレグのコストダウンが可能と
なった。また同時に離型紙の再利用により産業廃棄物の
減少化をも達成することができた。By succeeding in removing the residual resin attached to one of the release papers which has been peeled off, it becomes possible to apply the resin to the release paper again. Therefore, the release paper is normally disposed of after being used once. It was possible to use the place where was done several times, and as a result, it became possible to reduce the cost of prepreg. At the same time, we were able to reduce industrial waste by reusing release paper.
【図１】本発明に係わる離型紙上の残留樹脂の除去装置
を設けたるプリプレグの製造装置の一例を示す概略図で
ある。FIG. 1 is a schematic view showing an example of a prepreg manufacturing apparatus provided with a device for removing residual resin on release paper according to the present invention.
１ 繊維供給部 ２Ａ，２Ｂ 離型紙供給Ａ，Ｂ部 ３ 樹脂含浸部 ４ 引取部 ５ 残留樹脂除去装置部 ６Ａ，６Ｂ 離型紙巻き出し軸Ａ，Ｂ ７ 加熱ロール群 ８ 駆動チェーン ９ 駆動モータ １０ 冷却部 １１ 製品巻き取り軸 １２ 駆動モータ １３ 転写樹脂フィルム巻き出し軸 １４ 加熱ロール １５ ニップロール １６ 駆動モータ １７ 離型紙巻き取り軸 １８ 駆動モータ １９ 転写用樹脂フィルム巻き取り軸 ２０ 駆動モータ 1 Fiber Supply Section 2A, 2B Release Paper Supply A, B Section 3 Resin Impregnation Section 4 Collection Section 5 Residual Resin Removal Device Section 6A, 6B Release Paper Unwinding Shaft A, B 7 Heating Roll Group 8 Drive Chain 9 Drive Motor 10 Cooling Part 11 Product take-up shaft 12 Drive motor 13 Transfer resin film take-up shaft 14 Heating roll 15 Nip roll 16 Drive motor 17 Release paper take-up shaft 18 Drive motor 19 Transfer resin film take-up shaft 20 Drive motor
Claims (9)
もしくは適正巾に広げられたのちシート状に配列された
複数の強化繊維束の上面及び下面に、あらかじめ片面に
樹脂が塗布された離型紙を重ね合わせ、加熱、加圧して
樹脂を強化繊維シートもしくは強化繊維束シートに含浸
し、一方の離型紙を剥離するプリプレグの製造方法に於
いて、剥離した離型紙上に残留した樹脂を除去し、その
後樹脂を除去した面か、もしくはもう一方の面に樹脂を
塗布した離型紙を、プリプレグの製造に再度用いること
を特徴とするプリプレグの製造方法。1. A plurality of reinforcing fibers arranged in a sheet shape,
Alternatively, a release paper coated with resin on one side in advance is superposed on the upper and lower surfaces of a plurality of reinforcing fiber bundles arranged in a sheet shape after being spread to an appropriate width, and the resin is reinforced by heating and pressurizing the reinforcing fiber sheet or In a method of manufacturing a prepreg in which a reinforcing fiber bundle sheet is impregnated and one release paper is peeled off, the resin remaining on the peeled release paper is removed, and then the resin-removed surface or the other surface is removed. A method for producing a prepreg, characterized in that the release paper coated with a resin is used again for producing the prepreg.
し、その後ロール状に巻き取る請求項１記載のプリプレ
グの製造方法。2. The method for producing a prepreg according to claim 1, wherein the resin remaining immediately after the release paper is peeled off is removed and the resin is wound into a roll.
次に再び巻き返した時に残留した樹脂を除去する請求項
１記載のプリプレグの製造方法。3. The peeled release paper is wound into a roll,
The method for producing a prepreg according to claim 1, wherein the resin remaining when the film is rewound again is removed.
の樹脂フィルムに転写させることを特徴とする離型紙上
の残留樹脂の除去方法。4. A method for removing residual resin on a release paper, which comprises transferring the resin remaining on the release paper that has been peeled off to another resin film.
されている請求項４記載の離型紙上の残留樹脂の除去方
法。5. The method for removing residual resin on release paper according to claim 4, wherein the transfer surface of the transfer resin film is surface-modified.
理を施されている請求項４記載の離型紙上の残留樹脂の
除去方法。6. The method for removing residual resin on release paper according to claim 4, wherein the transfer surface of the transfer resin film is subjected to corona treatment.
ー処理を施されている請求項４記載の離型紙上の残留樹
脂の除去方法。7. The method for removing residual resin on a release paper according to claim 4, wherein the transfer surface of the transfer resin film is treated with a primer.
ピレンフィルムである請求項４記載の離型紙上の残留樹
脂の除去方法。8. The method for removing residual resin on release paper according to claim 4, wherein the transfer resin film is a biaxially oriented polypropylene film.
熱する手段と、転写用樹脂フィルムを連続的に巻き出す
手段と、剥離され加熱された離型紙の樹脂残留面と転写
用樹脂フィルム面を重ねた状態で加圧する手段と、残留
樹脂が除去された離型紙を連続的に巻き取る手段と、樹
脂を転写した転写用樹脂フィルムを連続的に巻き取る手
段を有することを特徴とする離型紙上の残留樹脂の除去
装置。9. A means for heating the resin remaining on the peeled release paper, a means for continuously unwinding the transfer resin film, a resin residual surface of the peeled and heated release paper, and a transfer resin film. It is characterized in that it has means for applying pressure in a state where the surfaces are overlapped, means for continuously winding release paper from which residual resin has been removed, and means for continuously winding a transfer resin film onto which resin has been transferred. Equipment for removing residual resin on release paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05774394A JP3532950B2 (en) | 1994-03-28 | 1994-03-28 | Method for producing prepreg and method and apparatus for removing residual resin on release paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05774394A JP3532950B2 (en) | 1994-03-28 | 1994-03-28 | Method for producing prepreg and method and apparatus for removing residual resin on release paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07258440A true JPH07258440A (en) | 1995-10-09 |
| JP3532950B2 JP3532950B2 (en) | 2004-05-31 |
Family
ID=13064396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05774394A Expired - Lifetime JP3532950B2 (en) | 1994-03-28 | 1994-03-28 | Method for producing prepreg and method and apparatus for removing residual resin on release paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3532950B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130121387A (en) * | 2012-04-27 | 2013-11-06 | 도레이첨단소재 주식회사 | Method for recovering a silicone release liner and regenerated polyester film using the same |
| WO2015060299A1 (en) * | 2013-10-22 | 2015-04-30 | 三菱レイヨン株式会社 | Prepreg production method |
-
1994
- 1994-03-28 JP JP05774394A patent/JP3532950B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130121387A (en) * | 2012-04-27 | 2013-11-06 | 도레이첨단소재 주식회사 | Method for recovering a silicone release liner and regenerated polyester film using the same |
| WO2015060299A1 (en) * | 2013-10-22 | 2015-04-30 | 三菱レイヨン株式会社 | Prepreg production method |
| JP5822033B2 (en) * | 2013-10-22 | 2015-11-24 | 三菱レイヨン株式会社 | Manufacturing method of prepreg |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3532950B2 (en) | 2004-05-31 |
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