JP2808015B2 - Continuous production method of obliquely oriented prepreg sheet - Google Patents
Continuous production method of obliquely oriented prepreg sheetInfo
- Publication number
- JP2808015B2 JP2808015B2 JP18857289A JP18857289A JP2808015B2 JP 2808015 B2 JP2808015 B2 JP 2808015B2 JP 18857289 A JP18857289 A JP 18857289A JP 18857289 A JP18857289 A JP 18857289A JP 2808015 B2 JP2808015 B2 JP 2808015B2
- Authority
- JP
- Japan
- Prior art keywords
- resin film
- fiber
- prepreg sheet
- prepreg
- fibers
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 28
- 238000010924 continuous production Methods 0.000 title 1
- 229920005989 resin Polymers 0.000 claims description 53
- 239000011347 resin Substances 0.000 claims description 53
- 239000000835 fiber Substances 0.000 claims description 48
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 6
- 239000004917 carbon fiber Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 239000012783 reinforcing fiber Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は、長手方向に対し強化材繊維が斜め方向に配
向した、いわゆる斜方配向プリプレグシートの連続的製
造法に関するものである。Description: FIELD OF THE INVENTION The present invention relates to a method for continuously producing a so-called obliquely oriented prepreg sheet in which reinforcing fibers are oriented obliquely to a longitudinal direction.
従来、シートの長手方向に強化材繊維の配向した、複
合材料成形用一方向配向プリプレグシートは知られてい
る。2. Description of the Related Art Conventionally, a unidirectionally oriented prepreg sheet for forming a composite material, in which reinforcing material fibers are oriented in a longitudinal direction of the sheet, is known.
このような一方向配向プリプレグシートは、異方性の
高い成形材料であるため、成形時複合材料の要求性能に
応じ、強化材繊維の方向を考慮して一方向配向プリプレ
グシートを裁断し積層して所望の性能を有する複合材料
を得ていた。Since such a unidirectionally oriented prepreg sheet is a highly anisotropic molding material, the unidirectionally oriented prepreg sheet is cut and laminated according to the required performance of the composite material during molding, taking into account the direction of the reinforcing fiber. Thus, a composite material having desired performance was obtained.
このような方法によると、一方向配向プリプレグシー
トの裁断の際、三角の裁断屑が発生し、一方向配向プリ
プレグシートの利用歩留りが低くなるという問題点があ
った。According to such a method, when cutting the unidirectionally oriented prepreg sheet, there is a problem that triangular cutting chips are generated, and the utilization yield of the unidirectionally oriented prepreg sheet is reduced.
このような問題点を解消するための一方向配向プリプ
レグシートとして、長手方向に対し繊維材が斜めに配向
した、いわゆる斜方配向プリプレグシートが提案されて
いる（特開昭59−114046号公報）。As a unidirectionally oriented prepreg sheet for solving such problems, a so-called obliquely oriented prepreg sheet in which a fiber material is oriented obliquely to the longitudinal direction has been proposed (Japanese Patent Application Laid-Open No. 59-114046). .
この公報には、斜方配向プリプレグシートの製造法と
して、一旦長手方向に繊維の配向した一方向配向プリプ
レグシートを製造した後、これを±５度〜±45度の所望
の角度に裁断し、次いで裁断片を工程離型紙から剥ぎ取
り他の離型紙上に並べ換え、さらに加熱ロールに通して
離型紙に仮接着する方法が記載されている。In this publication, as a method for producing an obliquely oriented prepreg sheet, after once producing a unidirectionally oriented prepreg sheet in which fibers are oriented in the longitudinal direction, this is cut at a desired angle of ± 5 degrees to ± 45 degrees, Then, a method is described in which the cut pieces are peeled off from the release paper in the process, rearranged on another release paper, and further passed through a heating roll and temporarily bonded to the release paper.
また、異方向積層成形物を得るには、一方向配向プリ
プレグシートを裁断し所望の構成に積層し、成型するこ
とが通常行われている。In order to obtain a different-direction laminated molded product, it is common practice to cut a unidirectionally oriented prepreg sheet, laminate the prepreg sheet into a desired configuration, and mold the same.
このような従来法は、一旦長手方向、繊維配向した一
方向配向プリプレグシートを、裁断、並べ換えという手
数が必要で、品質も安定し難いという問題点を有する。Such a conventional method has a problem in that it is necessary to cut and rearrange the unidirectionally oriented prepreg sheet in which the fibers are oriented in the longitudinal direction once, and the quality is difficult to stabilize.
本発明は、このような問題を解決し、連続的方法によ
って斜方配向プリプレグシートを有利に製造する方法を
提供しようとするものである。An object of the present invention is to solve such a problem and to provide a method for advantageously producing an obliquely oriented prepreg sheet by a continuous method.
本発明は下記のとおりである。 The present invention is as described below.
工程紙に担持され、長手方向に移動する樹脂フィルム
に長繊維を載置し繊維間に樹脂を含浸させてプリプレグ
シートを製造する方法において、樹脂フィルムの移動方
向を軸とした芯体の外表面に、工程紙に担持された樹脂
フィルムを樹脂フィルム面を外側として巻き付けて円筒
状樹脂フィルムを形成させ、さらに該円筒状樹脂フィル
ムに長繊維を巻き付けて外周に繊維を有する円筒とし、
次いでこの円筒を切り開くことを特徴とする斜方配向プ
リプレグシートの連続的製造法。In a method of manufacturing a prepreg sheet by placing long fibers on a resin film supported by process paper and moving in the longitudinal direction and impregnating the resin between the fibers, an outer surface of a core body having a moving direction of the resin film as an axis. In order to form a cylindrical resin film by winding the resin film carried on the process paper with the resin film surface outside, a long fiber is wound around the cylindrical resin film to form a cylinder having fibers on the outer periphery,
Then, the cylinder is cut open to continuously produce an obliquely oriented prepreg sheet.
本発明によると、従来手作業によっていた方法に比較
し、連続的に斜方配向プリプレグシートを得ることがで
きる。しかも、本発明によると、一方向配向プリプレグ
シートのみならず、異方向配向積層プリプレグシートを
連続的に製造することができる。According to the present invention, an obliquely oriented prepreg sheet can be continuously obtained as compared with a conventional manual method. Moreover, according to the present invention, not only a unidirectionally oriented prepreg sheet but also a differently oriented laminated prepreg sheet can be manufactured continuously.
本発明において、樹脂フィルムは、従来ホットメルト
法にてプリプレグを製造する際に用いられている熱硬化
性樹脂フィルムであり、熱硬化性樹脂の種類としては、
エポキシ樹脂、不飽和ポリエステル樹脂、ポリイミド樹
脂、ビニルエステル樹脂等である。In the present invention, the resin film is a thermosetting resin film that is conventionally used when manufacturing a prepreg by a hot melt method, and as a type of the thermosetting resin,
Epoxy resins, unsaturated polyester resins, polyimide resins, vinyl ester resins and the like.
これらの樹脂フィルムは工程紙（離難紙）に担持さ
れ、長手方向に移動しつつ繊維シートと張り合わされ、
加圧され、シート状プリプレグとされる。These resin films are carried on process paper (release paper), and are attached to the fiber sheet while moving in the longitudinal direction.
It is pressed to form a sheet prepreg.
強化材繊維としては、炭素繊維、ガラス繊維、芳香族
ポリアミド繊維等通常のプリプレグに用いられる繊維で
あり、特に本発明においては長繊維が用いられ、通常の
一方向プリプレグの製造に用いられている500〜24000フ
ィラメントから構成されている繊維束であるが、特に制
限はない。As the reinforcing fiber, carbon fiber, glass fiber, aromatic polyamide fiber and other fibers used in ordinary prepregs, particularly in the present invention, long fibers are used, and are used in the production of ordinary unidirectional prepregs. It is a fiber bundle composed of 500 to 24000 filaments, but there is no particular limitation.
本発明において斜方配向とは、第１図においてプリプ
レグシート２の長手方向Ｌに対し繊維３が角度αにて配
向していることをいい、傾き角度αは±５〜85度の範囲
が適当である。In the present invention, the oblique orientation means that the fibers 3 are oriented at an angle α with respect to the longitudinal direction L of the prepreg sheet 2 in FIG. 1, and the inclination angle α is suitably in a range of ± 5 to 85 degrees. It is.
本発明を図面によって説明する。 The present invention will be described with reference to the drawings.
第１図は、斜方配向一方向プリプレグの平面図であ
り、１は離型紙、２はプリプレグ、３は繊維材を示す。FIG. 1 is a plan view of an obliquely oriented unidirectional prepreg, wherein 1 is a release paper, 2 is a prepreg, and 3 is a fiber material.
第２図は本発明方法の平面模式図を示す。 FIG. 2 shows a schematic plan view of the method of the present invention.
第３図は、繊維の供給口を複数設け、しかも多層に繊
維層を形成させる方法を平面模式図に示したものであっ
て、本発明方法によって、複数の糸口を正逆方向に配向
させながら供給し、積層されたプリプレグを製造する場
合の平面図を示したものである。FIG. 3 is a schematic plan view showing a method of providing a plurality of fiber supply ports and forming a multi-layered fiber layer. In the method of the present invention, a plurality of fiber openings are oriented in forward and reverse directions. FIG. 3 is a plan view showing a case where supplied and laminated prepregs are manufactured.
第２図において、４は樹脂フィルム、５は長繊維、矢
印は樹脂フィルム４の移動方向を示す。第２図−ａは、
第２図Ａ−Ａ′における断面図を示す。第２図−ａにお
ける６は芯体断面を示す。ロールに巻かれた樹脂フィル
ム４は、ロールから引き出されて、矢印の方向に移動
し、芯体６に樹脂フィルム４を外側として徐々に丸めら
れ、円筒状樹脂フィルムを形成させ、ここに長繊維５を
供給する。In FIG. 2, 4 is a resin film, 5 is a long fiber, and an arrow indicates a moving direction of the resin film 4. FIG.
FIG. 2 shows a sectional view along AA '. 6 in FIG. 2A shows the core body cross section. The resin film 4 wound around the roll is pulled out of the roll, moves in the direction of the arrow, and is gradually rolled around the core 6 with the resin film 4 as the outer side to form a cylindrical resin film. Supply 5.
樹脂フィルム４と長繊維５に回転を与える。この回転
を与えるには、下記の３方法が採用され、何れの方法で
もよい。The rotation is given to the resin film 4 and the long fiber 5. In order to give this rotation, the following three methods are adopted, and any method may be used.
樹脂フィルム４を長手方向に移動させつつ、繊維供給
口を回転させる。The fiber supply port is rotated while moving the resin film 4 in the longitudinal direction.
樹脂フィルム４を長手方向に移動させつつ回転させ、
繊維供給口を固定する。Rotating the resin film 4 while moving it in the longitudinal direction,
Fix the fiber supply port.
樹脂フィルム４を長手方向に移動させつつ回転させ、
繊維供給口も回転させる。Rotating the resin film 4 while moving it in the longitudinal direction,
The fiber feed port is also rotated.
樹脂フィルム４は矢印の方向に移動し、この樹脂フィ
ルム４の移動と樹脂フィルム４−長繊維５間の相対的回
転により、長繊維５は樹脂フィルム４の円筒に巻き付け
られる。The resin film 4 moves in the direction of the arrow, and the long fiber 5 is wound around the cylinder of the resin film 4 by the movement of the resin film 4 and the relative rotation between the resin film 4 and the long fiber 5.
樹脂フィルム４上に長繊維５を供給し、巻き付ける
際、樹脂フィルム４近傍でバーなどによって張力下に方
向転換し、長繊維５に、しごきを与えると繊維の開繊性
が良好となる。When the long fiber 5 is supplied onto the resin film 4 and wound, the direction is changed under tension by a bar or the like in the vicinity of the resin film 4, and when the long fiber 5 is ironed, the fiber opening property is improved.
このようにして、第２図−ａのように樹脂フィルム４
の上に長繊維層が形成される。次いで、円筒を切り開
き、或は押しつぶして後両端部を切断し、シート状のプ
リプレグとし、ロール状に巻き取るか、定長に切断し採
取される。In this way, as shown in FIG.
A long fiber layer is formed on the top. Next, the cylinder is cut open or crushed to cut the rear end portions thereof to form a sheet-shaped prepreg, which is then wound up in a roll shape or cut into a fixed length and collected.
この工程において、樹脂フィルム４の上に載置された
長繊維層に樹脂を含浸させるために、必要な圧着が行わ
れるが、これは円筒を切り開き、或は押しつぶしてシー
ト状のプリプレグとした後に行うのがよい。In this step, in order to impregnate the resin into the long fiber layer placed on the resin film 4, necessary compression is performed. This is performed by cutting open or crushing the cylinder to form a sheet-shaped prepreg. Good to do.
円筒を切り開き、或は押つぶして後両端部を切断し、
そのまま巻き取り、次いで、工程紙を外側にして引き出
し、圧着することによって、正逆同角度に配向し、積層
されたプリプレグを得ることができる。Cut open the cylinder, or crush and cut the rear ends,
By winding it up as it is, then pulling out the process paper with the outside facing out, and crimping it, it is possible to obtain a laminated prepreg oriented at the same angle in the forward and reverse directions.
このような方法において、繊維配向角度は樹脂フィル
ム４の長手方向の移動速度と、樹脂フィルム４−長繊維
５間の相対的回転により決る。言い換えれば、樹脂フィ
ルム４の長手方向の移動速度と樹脂フィルム４−長繊維
５間の相対的回転を変化させることにより、繊維の配向
方向を任意に変化させることができる。In such a method, the fiber orientation angle is determined by the longitudinal moving speed of the resin film 4 and the relative rotation between the resin film 4 and the long fiber 5. In other words, by changing the moving speed in the longitudinal direction of the resin film 4 and the relative rotation between the resin film 4 and the long fiber 5, the orientation direction of the fiber can be arbitrarily changed.
本発明により、FRP成形に必要な任意の繊維配向のプ
リプレグを得ることができる。その結果、前述したよう
な、プリプレグの裁断屑の発生がなく、プリプレグ利用
の歩留りが向上する。しかも、一方向配向プリプレグを
斜めに裁断し配置しなおす方法に比較し、大幅に工程が
簡略化できる。According to the present invention, a prepreg having any fiber orientation necessary for FRP molding can be obtained. As a result, as described above, there is no generation of cutting waste of the prepreg, and the yield of prepreg utilization is improved. In addition, the process can be greatly simplified as compared with a method in which the unidirectionally oriented prepreg is cut obliquely and rearranged.
さらに、円筒状樹脂フィルムに供給される長繊維の回
転速度を層間で変えることによって、或いは回転方向を
変えることによって、プリプレグに配向方向の異る繊維
層を同時に形成させることができる。Further, by changing the rotation speed of the long fibers supplied to the cylindrical resin film between the layers or by changing the rotation direction, it is possible to simultaneously form the fiber layers having different orientation directions on the prepreg.
実施例１ エポキシ樹脂を用いた幅1mの樹脂フィルムとアクリル
系炭素繊維束（直径７μｍ、フィラメント数24000本構
成）を用い、第２図に示す方法によってプリプレグを製
造した。このとき樹脂フィルムの速度V1を2m/分とし、
回転速度Vsを２回転／分とした。このようにして樹脂フ
ィルム上に繊維を供給して後、樹脂フィルムを合せ部分
で円筒を切り開き、繊維面に工程紙を供給し、２枚の工
程紙間の樹脂フィルムと繊維とを熱ローラー間で押圧し
繊維間に樹脂を含浸させ、プリプレグとした。Example 1 A prepreg was manufactured by a method shown in FIG. 2 using a resin film having a width of 1 m using an epoxy resin and an acrylic carbon fiber bundle (diameter: 7 μm, number of filaments: 24,000). At this time, the speed V 1 of the resin film was set to 2 m / min,
The rotation speed Vs was set to 2 rotations / minute. After the fibers are supplied on the resin film in this manner, a cylinder is cut open at the joining portion of the resin films, the process paper is supplied to the fiber surface, and the resin film and the fibers between the two process papers are transferred between the heat rollers. To impregnate the resin between the fibers to obtain a prepreg.
このようにして得られたプリプレグは、長手方向に対
する繊維の配向角度が45度であった。The prepreg thus obtained had a fiber orientation angle of 45 degrees with respect to the longitudinal direction.
実施例２ 実施例１と同様の樹脂フィルムと炭素繊維束を用い、
第３図に示すように炭素繊維束を5aと5bの２段に配置し
た。ここで樹脂フィルムは回転させず、V1は2m/分と
し、5aと5bの炭素繊維束を夫々逆方向に回転させ、炭素
繊維束を樹脂フィルム上に供給し円筒状樹脂フィルムに
巻き付けた。次いで実施例１と同様にして、円筒を切り
開き、熱ローラー間で圧着して樹脂含浸を行い、プリプ
レグとした。Example 2 Using the same resin film and carbon fiber bundle as in Example 1,
As shown in FIG. 3, the carbon fiber bundles were arranged in two stages 5a and 5b. Here the resin film is not rotated, V 1 is to 2m / min, rotate the carbon fiber bundles 5a and 5b respectively opposite directions, wound around a cylindrical resin film supplying carbon fiber bundle on the resin film. Next, in the same manner as in Example 1, the cylinder was cut open and pressed between heat rollers to impregnate the resin, thereby obtaining a prepreg.
このようにして得られたプリプレグは、長手方向に対
する繊維の配向角度が±45度の２層プリプレグであっ
た。The prepreg thus obtained was a two-layer prepreg in which the orientation angle of the fiber with respect to the longitudinal direction was ± 45 degrees.
第１図は、斜方配向一方向プリプレグの平面図を示すも
のである。 第２図は、本発明方法の平面模式図を示したものであ
る。 第２図−ａは、第２図におけるＡ−Ａ′断面図を示した
ものである。 第３図は、繊維の供給口を複数設け、しかも多層に繊維
層を形成させる方法を平面模式図に示したものである。 符号の説明： 1:離型紙、2:プリプレグ、3:繊維材、4:樹脂フィルム、
5:長繊維、6:芯体FIG. 1 is a plan view of an obliquely oriented unidirectional prepreg. FIG. 2 shows a schematic plan view of the method of the present invention. FIG. 2A is a sectional view taken along the line AA ′ in FIG. FIG. 3 is a schematic plan view showing a method of providing a plurality of fiber supply ports and forming a multi-layered fiber layer. Explanation of symbols: 1: release paper, 2: prepreg, 3: fiber material, 4: resin film,
5: long fiber, 6: core
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B29B 11/16,15/08 - 15/14 C08J 5/24 B32B 1/00 - 35/00──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. 6 , DB name) B29B 11 / 16,15 / 08-15/14 C08J 5/24 B32B 1/00-35/00
Claims (1)
脂フィルムに長繊維を載置し繊維間に樹脂を含浸させて
プリプレグシートを製造する方法において、樹脂フィル
ムの移動方向を軸とした芯体の外表面に、工程紙に担持
された樹脂フィルムを樹脂フィルムを外側として巻き付
けて円筒状樹脂フィルムを形成させ、さらに該円筒状樹
脂フィルムに長繊維を巻き付けて外周に繊維を有する円
筒とし、次いでこの円筒を切り開くことを特徴とする斜
方配向プリプレグシートの連続的製造法。1. A method of manufacturing a prepreg sheet by placing long fibers on a resin film carried on process paper and moving in a longitudinal direction and impregnating the resin between the fibers, wherein a moving direction of the resin film is used as an axis. On the outer surface of the core body, wrap the resin film carried on the process paper with the resin film as the outside to form a cylindrical resin film, and further wrap a long fiber around the cylindrical resin film to form a cylinder having fibers on the outer periphery. And a method for continuously producing an obliquely oriented prepreg sheet, which comprises cutting the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18857289A JP2808015B2 (en) | 1989-07-20 | 1989-07-20 | Continuous production method of obliquely oriented prepreg sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18857289A JP2808015B2 (en) | 1989-07-20 | 1989-07-20 | Continuous production method of obliquely oriented prepreg sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0351106A JPH0351106A (en) | 1991-03-05 |
| JP2808015B2 true JP2808015B2 (en) | 1998-10-08 |
Family
ID=16226034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18857289A Expired - Fee Related JP2808015B2 (en) | 1989-07-20 | 1989-07-20 | Continuous production method of obliquely oriented prepreg sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2808015B2 (en) |
-
1989
- 1989-07-20 JP JP18857289A patent/JP2808015B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0351106A (en) | 1991-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |