JPH0359093B2 - - Google Patents
Info
- Publication number
- JPH0359093B2 JPH0359093B2 JP60114296A JP11429685A JPH0359093B2 JP H0359093 B2 JPH0359093 B2 JP H0359093B2 JP 60114296 A JP60114296 A JP 60114296A JP 11429685 A JP11429685 A JP 11429685A JP H0359093 B2 JPH0359093 B2 JP H0359093B2
- Authority
- JP
- Japan
- Prior art keywords
- filler
- fabric
- prepreg
- woven
- warp
- 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 - Lifetime
Links
- 239000004744 fabric Substances 0.000 claims description 29
- 239000000945 filler Substances 0.000 claims description 29
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 229920001187 thermosetting polymer Polymers 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 12
- 239000002759 woven fabric Substances 0.000 claims description 12
- 239000012783 reinforcing fiber Substances 0.000 claims description 9
- 238000009941 weaving Methods 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 6
- 239000004753 textile Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 description 10
- 239000004677 Nylon Substances 0.000 description 7
- 229920001778 nylon Polymers 0.000 description 7
- 238000007789 sealing Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 229920002292 Nylon 6 Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 229920000305 Nylon 6,10 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 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 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
Description
【発明の詳細な説明】
＜産業上の利用分野＞
この発明は、繊維強化樹脂（FRP）、特に、曲
面を有するFRPを成形するのに好適な織物プリ
プレグに関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to fiber reinforced resin (FRP), and particularly to a woven prepreg suitable for molding FRP having a curved surface.
＜従来の技術＞
FRPを成形する際に、補強用繊維を、織物の
形態で、しかも、Ｂステージの熱硬化性樹脂を含
浸したプリプレグの形態で使用することは周知で
ある。しかして、織物プリプレグは、織物の織糸
（経糸と緯糸）の交鎖角が変わることから、ドレ
ープ性（形に沿う性質）に富み、平板状のものの
みならず、たとえば特公昭59−47520号公報に記
載されているスピーカーコーンのように、曲面を
有するFRPでも比較的容易に成形できるという
利点がある。<Prior Art> When molding FRP, it is well known that reinforcing fibers are used in the form of a woven fabric and also in the form of a prepreg impregnated with a B-stage thermosetting resin. Since the intersecting angle of the weaving yarns (warp and weft) of the fabric changes, fabric prepreg has excellent drapability (the ability to conform to the shape), and can be used not only for flat-shaped fabrics, but also for example. There is an advantage that even FRP having a curved surface can be molded relatively easily, like the speaker cone described in the publication.
ところで、織物プリプレグを使用した、上述し
たスピーカーコーンのような曲面を有するFRP
の成形は、まず、織物プリプレグを加熱して賦型
する、すなわち所望の形に沿わせた後、加熱下に
加圧して熱硬化性樹脂を硬化させることによつて
行つている。すなわち、織物プリプレグを加熱し
て熱硬化性樹脂の粘度を一旦下げ、熱硬化性樹脂
による織糸の規制を緩かにしてその交錯角が変わ
りやすくして賦型するわけである。ところが、熱
硬化性樹脂の粘度が低下すると、当然、織糸が動
きやすくなり、そのため、交錯角のみならず、交
錯位置さえも変わつてしまう。しかるに、交錯位
置が変わると、繊維密度の均一性が損われ、
FRPは均質性が低下して物性が低下してくる。 By the way, FRP that uses woven prepreg and has a curved surface like the speaker cone mentioned above
Molding is performed by first heating and shaping the fabric prepreg, that is, shaping it into a desired shape, and then applying pressure under heat to harden the thermosetting resin. That is, the woven fabric prepreg is heated to lower the viscosity of the thermosetting resin, and the weaving yarns are loosely regulated by the thermosetting resin so that the intersecting angles thereof can be changed easily before shaping. However, when the viscosity of the thermosetting resin decreases, the yarns naturally move more easily, which causes not only the interlace angle but also the interlace position to change. However, when the interlacing position changes, the uniformity of fiber density is lost,
FRP becomes less homogeneous and its physical properties deteriorate.
＜発明が解決しようとする課題＞
この発明の目的は、従来の織物プリプレグの上
述した問題点を解決し、賦型時に織糸の交錯位置
が変わるのを防止することができて、物性に優れ
たFRPを成形することができる織物プリプレグ
を提供するにある。<Problems to be Solved by the Invention> The purpose of the present invention is to solve the above-mentioned problems of conventional woven fabric prepregs, to prevent the intersecting positions of weaving yarns from changing during shaping, and to have excellent physical properties. To provide a woven prepreg that can be molded into FRP.
＜課題を解決するための手段＞
上記目的を達成するために、この発明は、補強
用繊維の織物にＢステージの熱硬化性樹脂を含浸
してなる繊維強化樹脂成形用プリプレグであつ
て、織物は、繊維強化樹脂の成形に際して賦型温
度では溶融しないが成形温度では溶融する目止め
剤によつて目止されており、かつ、目止め剤の量
が織物全体に対して0.2〜５重量％の範囲にある
ことを特徴とする織物プリプレグを提供する。<Means for Solving the Problems> In order to achieve the above object, the present invention provides a prepreg for fiber-reinforced resin molding, which is made by impregnating a reinforcing fiber fabric with a B-stage thermosetting resin. is sealed with a filler that does not melt at the forming temperature but melts at the molding temperature during molding of the fiber reinforced resin, and the amount of filler is 0.2 to 5% by weight based on the entire fabric. Provided is a woven prepreg characterized in that it is in the range of
＜作用＞
目止め剤は、織物の織糸同士をそれらの交錯部
において互いに結着し、目止めする作用をもつ。
また、目止め剤は、賦型温度では溶融せず、賦型
時に織糸の交錯位置が変わるのを防止する作用を
もつ。しかしながら、目止め剤は、成形温度では
溶融し、織糸の拡がりや熱硬化性樹脂の含浸性に
影響を与える心配はほとんどない。<Function> The filler has the effect of binding and sealing the threads of the fabric to each other at their intersections.
In addition, the filler does not melt at the forming temperature and has the function of preventing the intersecting position of the weaving yarns from changing during forming. However, the filler melts at the molding temperature, and there is little concern that it will affect the spreading of the weaving yarn or the impregnation of the thermosetting resin.
＜実施例＞
第１図において、織物プリプレグは、補強用繊
維の経糸１と緯糸２とからなる織物にＢステージ
の熱硬化性樹脂４を含浸してなる。しかして、上
記織物には、その経糸１の、いわゆる横腹に沿つ
て線状の目止め剤３が付着し、その目止め剤３が
経糸１と緯糸２とをそれらの交錯部において互い
に結着し、目止めしている。<Example> In FIG. 1, the fabric prepreg is made by impregnating a B-stage thermosetting resin 4 into a fabric consisting of warp 1 and weft 2 of reinforcing fibers. Therefore, a linear filler 3 is attached to the fabric along the so-called flanks of the warp 1, and the filler 3 binds the warp 1 and the weft 2 to each other at their intersections. And I'm keeping my eyes closed.
上記において、織物は、図面では平織物を示し
ているが、綾織物でも朱子織物でもよいし、畝組
織をもつ織物であつてもよい。また、経糸に対し
て緯糸が30〜60°の角度で配列された、いわゆる
バイアス織物であつてもよいし、特開昭55−
30974号公報に記載されるような、実質的に屈曲
を有しない真直ぐな補強用繊維を互いに並行かつ
シート状に引き揃えてなる少なくとも２個の糸条
群を補助繊維によつて一体に織成した、いわゆる
ノンクリンプ織物であつてもよい。さらに、経糸
がら旋状に配列され、緯糸が経糸の描く円の半径
方向に配列された、いわゆるら旋織物であつても
よい。なかでも、組織の安定性が高い平織物であ
るのが最も好ましい。 In the above, the woven fabric is shown as a plain woven fabric in the drawings, but it may be a twill woven fabric, a satin woven fabric, or a woven fabric having a ribbed structure. Also, it may be a so-called bias fabric in which the weft is arranged at an angle of 30 to 60 degrees with respect to the warp.
At least two yarn groups made of straight reinforcing fibers that are substantially unbent and aligned in a sheet shape parallel to each other, as described in Publication No. 30974, are integrally woven with auxiliary fibers. It may be a so-called non-crimp fabric. Furthermore, it may be a so-called spiral fabric in which the warp threads are arranged in a spiral shape and the weft threads are arranged in the radial direction of a circle drawn by the warp threads. Among these, plain weave fabrics with high structural stability are most preferred.
経糸および緯糸を構成する補強用繊維は、
FRPにおいて通常使用されている、炭素繊維、
ガラス繊維、有機高弾性率繊維（ポリアラミド繊
維など）、シリコンカーバイド繊維、アルミナ繊
維などの高強度、高弾性率繊維のマルチフイラメ
ントである。これらの補強用繊維は、２種以上の
ものが混用されて交織織物を形成していてもよ
い。 The reinforcing fibers that make up the warp and weft are
Carbon fiber, commonly used in FRP,
It is a multifilament made of high-strength, high-modulus fibers such as glass fiber, organic high-modulus fiber (such as polyaramid fiber), silicon carbide fiber, and alumina fiber. Two or more types of these reinforcing fibers may be mixed to form a mixed woven fabric.
目止め剤は、賦型温度では溶融せず、成形温度
では溶融するものである必要がある。そのような
目止め剤は、たとえばナイロン、共重合ナイロ
ン、ポリエステル、塩化ビニリデン、塩化ビニ
ル、ポリウレタンのようなものである。なかで
も、共重合ナイロン、たとえばナイロン６と12の
共重合ナイロン、ナイロン６、66および610の共
重合ナイロン、ナイロン６、12、66および610の
共重合ナイロンは、後述するマトリクスたる熱硬
化性樹脂、特にエポキシ樹脂との接着性が良好で
あるので好ましい。 It is necessary that the filler does not melt at the molding temperature but melts at the molding temperature. Such fillers include, for example, nylon, copolymerized nylon, polyester, vinylidene chloride, vinyl chloride, and polyurethane. Among them, copolymerized nylon, such as copolymerized nylon of nylon 6 and 12, copolymerized nylon of nylon 6, 66, and 610, and copolymerized nylon of nylon 6, 12, 66, and 610, is a thermosetting resin as a matrix, which will be described later. This is particularly preferred because it has good adhesion to epoxy resins.
目止め剤は、本質的にFRPのマトリクスを形
成するものではないから、必要最小限に止めるべ
きである。また、多量の目止め剤の使用は、経糸
と緯糸との結着を強くしすぎて賦型を行いにくく
することもある。したがつて、目止め剤の量は、
経糸または緯糸に対して、0.4〜10重量％、好ま
しくは0.5〜５重量％の範囲にする。織物全体と
してみると、0.2〜５重量％、好ましくは0.2〜３
重量％の範囲である。なお、目止め剤は、すべて
の経糸に付着していてもよいし、１〜数本おきの
経糸に付着していてもよい。 Since filler does not essentially form the FRP matrix, it should be kept to the minimum necessary amount. Furthermore, the use of a large amount of filler may make the bond between the warp and weft too strong, making it difficult to shape. Therefore, the amount of filler is
The content ranges from 0.4 to 10% by weight, preferably from 0.5 to 5% by weight, based on the warp or weft. Considering the whole fabric, 0.2 to 5% by weight, preferably 0.2 to 3% by weight.
% by weight. In addition, the filler may be attached to all the warp threads, or may be attached to every one to several warp threads.
目止め剤は、第２図に示すように、経糸の、緯
糸と接する上部または下部に線状に付着している
ことであつてもよい。また、目止め剤は、経糸と
緯糸の交錯部のみに付着していることであつても
よい。 As shown in FIG. 2, the filler may be attached in a linear manner to the upper or lower portions of the warp yarns that are in contact with the weft yarns. Further, the filler may be attached only to the intersection of the warp and weft.
織物に含浸される熱硬化性樹脂は、FRPのマ
トリクスを形成するもので、エポキシ樹脂、不飽
和ポリエステル樹脂、ポリイミド樹脂、フエノー
ル樹脂のようなものである。これらの熱硬化性樹
脂は、織物に含浸された状態でＢステージであ
る。なお、織物プリプレグ中に占める熱硬化性樹
脂の量は、30〜60体積％、好ましくは35〜55体積
％の範囲である。 The thermosetting resins that are impregnated into the fabric form the matrix of FRP, such as epoxy resins, unsaturated polyester resins, polyimide resins, and phenolic resins. These thermosetting resins are B-staged when impregnated into textiles. The amount of thermosetting resin in the fabric prepreg is in the range of 30 to 60% by volume, preferably 35 to 55% by volume.
上述したような織物プリプレグは、たとえば次
のようにして製造することができる。 The textile prepreg as described above can be manufactured, for example, as follows.
すなわち、クリールから引き出した経糸と、同
様にクリールから引き出した、目止め剤を構成す
るモノフイラメント糸、マルチフイラメント糸ま
たはスリツトヤーンなどの糸、つまり目止め用糸
とを配列し、１羽の筬に経糸と目止め用糸とを入
れ、それらが開口した時に緯糸を打ち込んで経糸
に並行して目止め用糸が入つた織物を得る。 That is, the warp threads pulled out from the creel and the threads such as monofilament yarns, multifilament threads, or slit yarns constituting the filler, which were also pulled out from the creel, in other words, the filler threads, are arranged and made into one reed. The warp and the filling thread are inserted, and when they are opened, the weft is driven in to obtain a fabric in which the filling thread is inserted parallel to the warp.
次に、上記織物の少なくとも一面に、一面に熱
硬化性樹脂を塗布した離型紙をその一面において
重ね合わせ、その重合せ体をプレスロールに通し
て目止め用糸の融点以上の温度に加熱し、目止め
用糸を溶融して経糸と緯糸との結着、すなわち目
止めを行う。この時、同時に熱硬化性樹脂を離型
紙から織物に転移、含浸する。目止め用糸の配置
や太さを変えれば、図面に示すように線状に目止
めされたものや、経糸と緯糸とがその交錯部のみ
において目止めされた織物を得ることができる。 Next, a release paper coated with a thermosetting resin is layered on at least one side of the fabric, and the polymer is passed through a press roll and heated to a temperature equal to or higher than the melting point of the sealing thread. , the filling thread is melted to bind warp and weft yarns, that is, to perform filling. At this time, the thermosetting resin is simultaneously transferred from the release paper to the fabric and impregnated. By changing the arrangement and thickness of the sealing threads, it is possible to obtain fabrics with linear sealing as shown in the drawings, or fabrics with sealing only at the intersections of the warp and weft yarns.
＜発明の効果＞
この発明は、織物を、FRPの成形に際して賦
型温度では溶融しないが成形温度では溶融する目
止め剤によつて目止めしているから、成形に際し
て賦型すべく加熱しても、織糸同士の交錯角は変
わる交錯位置まで変わることはない。たとえば、
目止め剤として共重合ナイロンを使用したもの
を、その融点（120℃程度）よりも低い100℃程度
に加熱すると、熱硬化性樹脂の粘度が下がつて織
糸の交錯角が変わり得る自由度ができ、賦型がで
きるが、織糸の交錯位置は目止め剤が溶融してい
ないために変わらない。したがつて、そのように
賦型したものを125℃で成形すると、補強用繊維
が正しく配列された、繊維密度の均一性に優れた
FRPとすることができる。このことは、特に曲
面を有するFRPの成形に有効である。しかも、
目止め剤は成形温度では溶融するから、目止め剤
が織物全体に対して0.2〜５重量％と極めて少量
であることと相まつて、織糸を構成する補強用繊
維（マルチフイラメント）の拡がりが阻害された
り、熱硬化性樹脂の含浸性が阻害されたりする心
配はほとんどない。また、目止め剤は本質的に
FRPのマトリクスを形成するものではないが、
この発明は、目止め剤が織物全体に対して0.2〜
５重量％と極めて少量であるので、これがFRP
の物性に与える影響もほとんどない。<Effects of the Invention> In this invention, when forming FRP, the fabric is sealed with a filler that does not melt at the forming temperature but melts at the forming temperature. However, the interlacing angle between the threads does not change until the intersecting position changes. for example,
When copolymerized nylon is used as a filler and is heated to about 100℃, which is lower than its melting point (about 120℃), the viscosity of the thermosetting resin decreases and the degree of freedom in which the intersecting angle of the weaving yarns can be changed. is formed and shaped, but the intersecting position of the weaving threads remains unchanged because the filler is not melted. Therefore, when the shaped product is molded at 125℃, the reinforcing fibers are correctly arranged and the fiber density is highly uniform.
It can be FRP. This is particularly effective for molding FRP having a curved surface. Moreover,
Since the filler melts at the forming temperature, the amount of the filler is extremely small at 0.2 to 5% by weight relative to the entire fabric, and this causes the reinforcing fibers (multifilaments) that make up the weaving yarns to spread. There is almost no concern that the impregnating properties of the thermosetting resin will be inhibited. Also, eye blockers are essentially
Although it does not form the matrix of FRP,
In this invention, the amount of filler applied to the entire fabric is 0.2~
Since the amount is extremely small at 5% by weight, this is FRP.
It has almost no effect on the physical properties of the material.
第１図および第２図は、この発明に係る織物プ
リプレグのそれぞれ異なる例を示す概略縦断面図
である。
１：織物の経糸、２：織物の緯糸、３：目止め
剤、４：熱硬化性樹脂。
FIGS. 1 and 2 are schematic vertical cross-sectional views showing different examples of the fabric prepreg according to the present invention. 1: warp of textile, 2: weft of textile, 3: filler, 4: thermosetting resin.
Claims (1)
脂を含浸してなる繊維強化樹脂形成用プリプレグ
であつて、織物は、繊維強化樹脂の成形に際して
賦型温度では溶融しないが成形温度では溶融する
目止め剤によつて目止めされており、かつ、目止
め剤の量が織物全体に対して0.2〜５重量％の範
囲にあることを特徴とする織物プリプレグ。 ２ 目止め剤の量が織物全体に対して0.2〜３重
量％の範囲にある、特許請求の範囲第１項に記載
の織物プリプレグ。 ３ 目止め剤が織糸に線状に付着している、特許
請求の範囲第１項または第２項に記載の織物プリ
プレグ。 ４ 目止め剤が織糸の交錯部のみに付着してい
る、特許請求の範囲第１項または第２項に記載の
織物プリプレグ。[Scope of Claims] 1. A prepreg for forming a fiber-reinforced resin made by impregnating a B-stage thermosetting resin into a woven fabric of reinforcing fibers, wherein the woven fabric does not melt at the forming temperature during molding of the fiber-reinforced resin. A woven prepreg characterized in that the woven fabric prepreg is sealed with a filler that melts at the molding temperature, and the amount of the filler is in the range of 0.2 to 5% by weight based on the entire fabric. 2. The fabric prepreg according to claim 1, wherein the amount of filler is in the range of 0.2 to 3% by weight based on the entire fabric. 3. The textile prepreg according to claim 1 or 2, wherein the filler is linearly attached to the weaving threads. 4. The textile prepreg according to claim 1 or 2, wherein the filler is attached only to the intersecting parts of the woven threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11429685A JPS61272242A (en) | 1985-05-29 | 1985-05-29 | Woven prepreg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11429685A JPS61272242A (en) | 1985-05-29 | 1985-05-29 | Woven prepreg |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61272242A JPS61272242A (en) | 1986-12-02 |
| JPH0359093B2 true JPH0359093B2 (en) | 1991-09-09 |
Family
ID=14634311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11429685A Granted JPS61272242A (en) | 1985-05-29 | 1985-05-29 | Woven prepreg |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61272242A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0675155B1 (en) * | 1994-03-31 | 2002-06-12 | Toray Industries, Inc. | Woven carbon fiber fabric prepreg precursor, prepreg and processes for producing them |
| WO2015079713A1 (en) * | 2014-01-14 | 2015-06-04 | 株式会社メイコー | Printed circuit board |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57208016A (en) * | 1981-06-16 | 1982-12-21 | Shinko Chem | Electrically insulating prepreg |
-
1985
- 1985-05-29 JP JP11429685A patent/JPS61272242A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57208016A (en) * | 1981-06-16 | 1982-12-21 | Shinko Chem | Electrically insulating prepreg |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61272242A (en) | 1986-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |