JPS6331749A - Laminated board - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は電気絶縁板として使用される積層板罠関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a laminate trap used as an electrical insulation board.

（従来の技術） パンチングによる打抜加工用の積層板として紙基材また
はガラス不織布基材にエポキシ樹脂を含浸したプリプレ
グ１枚あるいは複数枚の両面にガラス布基材にエポキシ
樹脂金含浸したプリプレグを重ね合わせ加熱加圧底形し
たガラス布補強積層板がある。(Prior art) As a laminate for punching, a prepreg made of a paper base material or a glass nonwoven fabric base material impregnated with epoxy resin, or a prepreg made of a glass cloth base material impregnated with epoxy resin gold is used on both sides of one or more prepreg sheets. There is a glass cloth reinforced laminate that is laminated and heated and pressed to form the bottom.

（発明が解決しようとする問題点〕 しかしパンチングによる打抜加工において表面層のガラ
ス布基材のガラス繊維が打抜時にきれいにせん断されに
くく、穴内に突起として残り、高圧水洗などを行っても
取れにくい。こねにスルーホールめっきを施すと穴径が
小さくなるなどの不都合が発生する。(Problem to be solved by the invention) However, in the punching process, the glass fibers of the glass cloth base material of the surface layer are difficult to shear cleanly during punching, and remain as protrusions inside the holes, which can be removed even after high-pressure water washing. Difficult. If through-hole plating is applied to the dough, inconveniences will occur such as the hole diameter becoming smaller.

打抜穴の断面は第１図に示すようにガラス布基材のガラ
ス繊維が強く収束している１こめ、特にダイス側表面層
のガラス繊維が残りやすい。As shown in FIG. 1, the cross section of the punched hole is where the glass fibers of the glass cloth base material are strongly converged, and especially the glass fibers of the surface layer on the die side tend to remain.

第１図において１は紙またはガラス不織布を基材とする
エポキシ樹脂１．２はガラス布を基材とする表面のエポ
キシ樹脂層、３は金属箔、４は打抜穴内に残ったガラス
繊維である。In Fig. 1, 1 is an epoxy resin whose base material is paper or glass nonwoven fabric, 2 is an epoxy resin layer on the surface whose base material is glass cloth, 3 is a metal foil, and 4 is a glass fiber remaining in the punched hole. be.

この対策として打抜金型のポンチと下型とのクリアラン
スを小さくすることに工り向上はするが不十分であり、
かつ金型の寿命を短か（する。As a countermeasure to this problem, machining is improved by reducing the clearance between the punch of the punching die and the lower die, but this is not sufficient.
And shorten the life of the mold.

本発明は打抜加工性（打抜式仕上り）が良好な積層板を
提供するものである。The present invention provides a laminate with good punching workability (punching finish).

（問題点を解決するだめの手段） 本発明は密度がたて糸で４０〜５０本／２５Ｉ！１ＩＸ
ｌ、工こ糸で３ＣＪ〜４０本／２５ｆｆｌｆｆｌ、厚さ
が０１５〜Ｑ、２３１Ｍ１１重さが１９０〜２３０　ｇ
／醪であり引張強さがたて方向で４２〜６０ｋｇｆ／２
５ＱＩＩＩ＋、よこ方向で３２〜５０ｋｇｆ／２５ｍｍ
のガラス布基材にエポキシ樹脂を含浸したプリプレグ七
紙基材またはガラス不織布基材にエポキシ樹脂を含浸し
たプリプレグ１枚あるいは複数枚の両面に重ね合わせ加
熱加圧成形することを特徴とする。(Another means to solve the problem) The density of the present invention is 40 to 50 warp yarns/25I! 1IX
l, 3CJ to 40 threads/25fflffl, thickness 015 to Q, 231M11 weight 190 to 230 g
/ Moromi and has a tensile strength of 42 to 60 kgf/2 in the vertical direction.
5QIII+, 32-50kgf/25mm in horizontal direction
It is characterized in that it is laminated on both sides of one or more sheets of prepreg made of a glass cloth substrate impregnated with an epoxy resin, or a prepreg made of a glass nonwoven fabric substrate impregnated with an epoxy resin, and then heated and pressure molded.

本発明においてガラス布基材の引張強さがたて方向で６
０ｋｇｆ／２５ＩＩＬＩＩＩ′ｔ−越えろと積層板の打
抜穴内に残りやすくなる。一方ガラス布基材の引張強さ
が、たて方向で４２　ｋｇｆ／２５　ｍｍ以下、よこ方
向で３２　ｋｇｆ／２５　ｍｒｎ以下では積層板の曲げ
強さが小さく、米国ＮＥＭＡ規格（ＣＥＭ−１：たて方
向２４．５　ｋｇｆ／−以上、よこ方回１２６ｋｇｆ／
−以上、ＣＥＭ−３：たて方向２ａ２ｋｇｆ／＃１以上
、よこ方向２２．４　ｋｇｆ／ｓ’以上〕を満足れる。In the present invention, the tensile strength of the glass cloth base material is 6 in the vertical direction.
If it exceeds 0kgf/25IILIII't, it will tend to remain in the punched hole of the laminate. On the other hand, if the tensile strength of the glass cloth base material is 42 kgf/25 mm or less in the vertical direction and 32 kgf/25 mrn or less in the horizontal direction, the bending strength of the laminate is small, and 24.5 kgf/- or more in the horizontal direction, 126 kgf/- in the horizontal direction
- above, CEM-3: vertical direction 2a2 kgf/#1 or more, horizontal direction 22.4 kgf/s' or more] is satisfied.

ガラス布基材の密度はたて糸（ガラスヤーン）で４０〜
５０本／２５ｍｍ、よこ糸３０〜４０本／２５市、厚さ
が０．１５〜Ｉ：１．２３＋１１１１１．重さが１９０
〜２３０ｇ／ｍ’のものが使用される。これは積層板の
ＵＬ規格で灰分１６，４〜２ｉ２％と規定されており、
この規格を満たすためにガラス布基材の重さは１９０〜
２３０ｇ／ｍＩとなり、ガラス布基材の密度、厚さが上
記の範囲のものとなる。The density of the glass cloth base material is 40~ in warp yarn (glass yarn)
50 pieces/25mm, weft 30-40 pieces/25 cities, thickness 0.15-I:1.23+11111. Weight is 190
~230 g/m' is used. This is specified by the UL standard for laminates as having an ash content of 16.4 to 2i2%.
In order to meet this standard, the weight of the glass cloth base material must be 190~
230 g/mI, and the density and thickness of the glass cloth base material are within the above range.

本発明に使用される紙基材はリンター紙、クラフト紙、
リンター混抄クラフト紙およびこれらを薬品処理した紙
などの一般に使用されているものである。またガラス不
織布基材はガラスヤーンー、カラスマット、紙混抄ガラ
スベーパー、合成繊維混抄ガラスペーパーなどの一般に
使用されているものである。Paper base materials used in the present invention include linter paper, kraft paper,
Commonly used materials include linter-mixed kraft paper and paper treated with chemicals. The glass nonwoven fabric base material is one commonly used such as glass yarn, crow mat, paper-mixed glass vapor, or synthetic fiber-mixed glass paper.

本発明に使用されるエポキシ樹脂とはエポキシ樹脂に硬
化剤、硬化促進剤を配合したものであり充填剤や着色剤
が含まれているものでも工い。The epoxy resin used in the present invention is an epoxy resin mixed with a curing agent and a curing accelerator, and may also contain fillers and colorants.

加熱加圧は、１６０〜１８０℃、７０〜９０ｋｇｆ、／
′ａＩ１１、で８０〜１００分行なわれろ。Heat and pressurize at 160-180℃, 70-90kgf, /
Do this for 80 to 100 minutes at 'aI11.

実施例１ エポキシ樹脂（ＤＥＲ５１Ｌダウケミカル社製商品名）
を第１表に示すガラス布基材Ａに含浸したプリプレグ（
８）を得た。またプリプレグ囚に使用した樹脂をリンタ
ー紙に含浸したプリプレグｔａ＋を得た。５枚のプリプ
レグ（ａｔの両面にプリプレグ囚を各１枚重ね、さらに
最外層の両面に銅Ｗ３を重ね合わせ温度１７０℃、圧力
８０ｋｇｆ／ｃｍ’で９０分間加熱加圧成形して、淳さ
１．６ｍｎ＋の両面鋼張積層板を得た。Example 1 Epoxy resin (DER51L product name manufactured by Dow Chemical Company)
Prepreg (
8) was obtained. Further, prepreg ta+ was obtained by impregnating linter paper with the resin used for the prepreg. Five sheets of prepreg (one prepreg layer each on both sides of AT, and copper W3 on both sides of the outermost layer were heated and pressure-molded for 90 minutes at a temperature of 170°C and a pressure of 80 kgf/cm', A double-sided steel clad laminate of .6 mm+ was obtained.

比較例１ 実施例１で使用したエポキシ樹脂を第１表に示すガラス
布基材Ｂに含浸したプリプレグｔＢ）　’ｅ得た。実施
例１で得た５枚のプリプレグＩａ）の両面にプリプレグ
（Ｂ）を各１枚重ね、さらに最外層の両面に銅箔を重ね
合わせ、実施例１と同じ加熱加圧条件で成形して厚さ１
．６正の両面銅張積層板を得た。Comparative Example 1 A prepreg tB)'e was obtained by impregnating the glass cloth base material B shown in Table 1 with the epoxy resin used in Example 1. One prepreg (B) was stacked on both sides of the five prepregs Ia) obtained in Example 1, and copper foil was further stacked on both sides of the outermost layer, and molded under the same heating and pressing conditions as in Example 1. Thickness 1
．． A 6-positive double-sided copper-clad laminate was obtained.

比較例２ 実施例１で使用したエポキシ樹脂を第１表に示すガラス
布基材Ｃに含浸したプリプレグ（Ｃ１’！に得た。実施
例１で得た５枚のプリプレグ（ａ）の両面にプリプレグ
ｔＣ］を各１枚重ねさらに最外層の両面に銅箔を重ね合
わせ、実施例１と同じ加熱加圧条件で成形して厚さ１．
６　ｒｎｍの両面銅張積層板を得た。Comparative Example 2 A prepreg (C1'!) was obtained by impregnating the epoxy resin used in Example 1 into the glass cloth base material C shown in Table 1. Prepreg tC] were stacked, and then copper foil was stacked on both sides of the outermost layer, and molded under the same heating and pressing conditions as in Example 1 to a thickness of 1.
A double-sided copper-clad laminate of 6 nm was obtained.

実施例２ 実施例１で使用したエポキシ樹脂をガラスペーパーに含
浸したプリプレグ（、ｂａｔ得た。４枚のプリプレグ（
ｂＪの両面に実施例１で得たプリプレグ人を各１枚重ね
さらに最外層の両面に銅箔を重ね甘わせ、実施例１と同
じ加熱加圧条件で成形して厚さ１．６　ｍｒａの両面鋼
張積層板を得た。Example 2 A prepreg (bat) was obtained by impregnating glass paper with the epoxy resin used in Example 1. Four sheets of prepreg (
Lay one sheet each of the prepreg obtained in Example 1 on both sides of bJ, further layer copper foil on both sides of the outermost layer, and mold under the same heat and pressure conditions as Example 1 to obtain a 1.6 mra thick sheet. A double-sided steel clad laminate was obtained.

比較例３ 実施例２で得た４枚のプリプレグ（ｋｌの両面に比較例
１で得たプリプレグ（Ｂｌ　’に各１枚重ね、さらに最
外層の両面に銅箔を重ね合わせ実施例１と同じ加熱加圧
条件で成形し℃厚さ１．６市の両面積層板を得た。Comparative Example 3 Four sheets of the prepreg obtained in Example 2 (kl) were stacked on each side of the prepreg obtained in Comparative Example 1 (Bl'), and copper foil was further layered on both sides of the outermost layer, the same as in Example 1. A double-sided laminate with a thickness of 1.6° C. was obtained by molding under heating and pressing conditions.

比較例４ 実施例２で得た４枚のプリプレグ（ｂ）の両面に比較例
２で得たプリプレグ（Ｃ）を各１枚重ね、さらに最外層
の両面に銅箔を重ね合わせ、実施例１と同じ加熱加圧条
件で成形して厚さ１．６　ｍｍの両面積層板を得た。Comparative Example 4 One sheet of prepreg (C) obtained in Comparative Example 2 was stacked on both sides of the four prepregs (b) obtained in Example 2, and copper foil was further stacked on both sides of the outermost layer. A double-sided laminate with a thickness of 1.6 mm was obtained by molding under the same heating and pressing conditions.

第　　１　　表 実施例１．２および比較例１．２．３．４で得た両面鋼
張積層板をポンチ径１．０市φクリアランスα０６１！
Ｉｍ（両側）の金型で打抜加工を行った。各積層板の打
抜穴仕上り、曲げ強さを第２表に示す。Table 1 The double-sided steel clad laminates obtained in Example 1.2 and Comparative Example 1.2.3.4 were punched with a punch diameter of 1.0 and a clearance of α061!
Punching was performed using a mold of Im (both sides). Table 2 shows the punched hole finish and bending strength of each laminate.

以下余日 第２表　　　　　　　屏 一コ ＊）残ったガラス繊維の長さがＱ、　１　ａｏｎ以上の
打抜穴の発生率（数値の小さい方が良好）を示す。また
かっこ内は通常行われている打抜加工後の高圧水洗（６
０ｋｇｆ／ａｎ’）水洗をした後の打抜仕上りを示す。Table 2 below shows the incidence of punched holes of 1 aon or more (the smaller the number, the better) the length of the remaining glass fiber is Q. The information in parentheses is the high-pressure water washing (6
0kgf/an') Shows the punching finish after washing with water.

（発明の効果ン 本発明では、強度が小さいガラス布基材を表面層に使用
することに工り、ガラス繊維が打抜穴内に残りにくく、
打抜穴仕上りの良好な打抜加工が可能となる。従って本
発明を適用した印刷回路用金属箔張積層板においては、
打抜加工後、打抜穴内に残ったガラス繊維の除去が省略
できろ。(Effects of the invention) In the present invention, a glass cloth base material with low strength is used for the surface layer, so that glass fibers are less likely to remain in the punched holes.
It is possible to perform punching with a good punched hole finish. Therefore, in the metal foil clad laminate for printed circuits to which the present invention is applied,
After the punching process, the removal of the glass fibers remaining in the punched hole can be omitted.

【図面の簡単な説明】[Brief explanation of the drawing]

１１図は積層板打抜穴の断面図である。 ｌ（又 FIG. 11 is a sectional view of a punched hole in the laminate. l(also

Claims (1)

【特許請求の範囲】 １、紙基材またはガラス不織布基材にエポキシ樹脂を含
浸したプリプレグの所定枚数の両面に、密度がたて糸４
０〜５０本／２５ｍｍ、よこ糸３０〜４０本／２５ｍｍ
、厚さが０．１５〜０．２３ｍｍ、重さが１９０〜２３
０ｇ／ｍ＾２で引張強さがたて方向で４２〜６０ｋｇｆ
／２５ｍｍ、よこ方向で３２〜５０ｋｇｆ／２５ｍｍの
ガラス布基材にエポキシ樹脂を含浸したプリプレグを重
ね合わせ加熱加圧成形して成る積層板。 ２、両方または一方の最外層に金属箔を重ね合わせ加熱
加圧成形して成る特許請求の範囲第１項記載の積層板。[Claims] 1. On both sides of a predetermined number of sheets of prepreg, which is a paper base material or a glass nonwoven fabric base material impregnated with an epoxy resin, warp yarns with a density of 4
0-50 threads/25mm, weft 30-40 threads/25mm
, thickness 0.15~0.23mm, weight 190~23mm
At 0g/m^2, the tensile strength is 42-60kgf in the vertical direction
/25mm, 32-50kgf/25mm in the horizontal direction A laminate made by laminating a prepreg impregnated with epoxy resin on a glass cloth base material and forming it under heat and pressure. 2. The laminate according to claim 1, which is formed by laminating metal foil on one or both of the outermost layers and forming the metal foil under heat and pressure.