JPS6412231B2 - - Google Patents
Info
- Publication number
- JPS6412231B2 JPS6412231B2 JP55132158A JP13215880A JPS6412231B2 JP S6412231 B2 JPS6412231 B2 JP S6412231B2 JP 55132158 A JP55132158 A JP 55132158A JP 13215880 A JP13215880 A JP 13215880A JP S6412231 B2 JPS6412231 B2 JP S6412231B2
- Authority
- JP
- Japan
- Prior art keywords
- base material
- resin liquid
- laminate
- manufacturing
- sheet
- 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
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明は、含浸性に優れ、内部に気泡や空孔を
ほとんど有しない積層板の製造方法に関し、更に
詳しくは、溶剤を用いることなく、それ自体硬化
体となり得る硬化性樹脂液を紙やガラス布に含浸
せしめ、該樹脂液含浸基材を複数枚重ね合せ、次
いで樹脂液を硬化させて内部に気泡や空孔をほと
んど有しない積層板の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a laminate that has excellent impregnation properties and has almost no bubbles or pores inside. The present invention relates to a method for manufacturing a laminate having almost no air bubbles or pores inside by impregnating paper or glass cloth with a resin liquid, stacking a plurality of substrates impregnated with the resin liquid, and then curing the resin liquid.
溶剤を含まない、それ自体硬化しうるタイプの
硬化性樹脂液とは、例えばエポキシ樹脂や不飽和
ポリエステル樹脂の中に見い出すことが出来る
が、通常、これらは0.5ポイズ〜数千ポイズの粘
度を有し、紙やガラス布への含浸がわるい。従つ
て従来より、硬化性樹脂を溶剤に溶かし、粘度を
極端に低下させ、いわゆるワニスを含浸し、後で
溶剤を乾燥し、次いで樹脂を硬化させるなどして
製造されていた。しかし溶剤を用いる方法は、溶
剤の回収、処理など公害並びにコスト上などの問
題があり、化粧板・積層絶縁板・印刷回路板用金
属箔張り積層板等の関連業界で問題となつてい
る。 A type of curable resin liquid that does not contain a solvent and can be cured by itself can be found, for example, in epoxy resins and unsaturated polyester resins, but these usually have a viscosity of 0.5 poise to several thousand poise. However, it is difficult to impregnate paper or glass cloth. Conventionally, therefore, curable resins have been manufactured by dissolving them in a solvent, extremely lowering their viscosity, impregnating them with so-called varnish, then drying the solvent, and then curing the resin. However, the method using a solvent has problems such as pollution and cost due to the recovery and treatment of the solvent, and has become a problem in related industries such as decorative boards, laminated insulating boards, and metal foil-covered laminates for printed circuit boards.
本発明者は、かかる現状に鑑みて、溶剤を含ま
ない非溶剤硬化性樹脂液を用いて、これら積層板
を製造する方法を鋭意研究した結果、非溶剤型の
粘度が高い硬化性樹脂液を紙やガラス布のごとき
シート状基材に含浸すると、どのような含浸方法
を用いても内部に多数の気泡が巻き込まれて残留
するが、驚くべきことには、これら気泡は次第に
徐々に樹脂液中に溶解し消滅することを本発明者
は見い出し、更に、しかる後に硬化させると、気
泡や空孔をほとんど含まない含浸性良好な積層板
を製造できることを見い出し、本発明に到達し
た。即ち本発明は、シート状基材と該基材に含浸
した溶剤を含まない、それ自体硬化体となり得る
硬化性樹脂液が硬化してなる積層体の製造方法に
おいて、該基材に硬化性樹脂液を含浸後、硬化性
樹脂液含浸基材中に取り込まれた気泡が該樹脂液
中に溶解し、消滅した後、硬化させることを特徴
とする積層板の製造方法である。 In view of the current situation, the inventors of the present invention have conducted intensive research on a method for producing these laminates using a non-solvent curable resin liquid that does not contain a solvent, and have developed a non-solvent curable resin liquid with a high viscosity. When a sheet-like substrate such as paper or glass cloth is impregnated, no matter what impregnation method is used, a large number of air bubbles remain trapped inside, but surprisingly, these air bubbles gradually absorb the resin liquid. The present inventors have discovered that, by subsequently curing, it is possible to produce a laminate with good impregnability that contains almost no bubbles or pores, and has thus arrived at the present invention. That is, the present invention provides a method for producing a laminate comprising a sheet-like base material and a curable resin liquid impregnated into the base material, which does not contain a solvent and which can itself become a hardened product. This method of manufacturing a laminate is characterized in that after impregnation with a curable resin liquid, air bubbles taken into the base material impregnated with a curable resin liquid are dissolved in the resin liquid and disappeared, and then cured.
シート状基材としては、リンター紙・コツトン
紙・クラフト紙などのセルロース繊維を主成分と
する紙、ガラス布、ガラス不織布、石綿布、綿布
など良く知られたものを挙げることができるが、
紙やガラス布が本発明に特に好適である。又、予
め各種有機化合物で処理した紙なども好適であ
る。溶剤を含まない、それ自体硬化体となり得る
硬化性樹脂液としては、エポキシ樹脂、不飽和ポ
リエステル樹脂、ビニルエステル樹脂、シアリル
フタレート樹脂等の硬化反応過程で気体や液体等
の反応副生成物を生じない、付加反応型やラジカ
ル重合型のものが、無圧の条件下で硬化させるこ
とが出来、過剰な樹脂液の流動を避けることが出
来、本発明に好適である。 Examples of sheet-like substrates include well-known paper such as linter paper, cotton paper, kraft paper, etc. whose main component is cellulose fiber, glass cloth, glass nonwoven fabric, asbestos cloth, and cotton cloth.
Paper and glass cloth are particularly suitable for the present invention. Also suitable are papers that have been previously treated with various organic compounds. Curable resin liquids that do not contain solvents and can be cured by themselves include those that produce reaction by-products such as gas and liquid during the curing reaction process of epoxy resins, unsaturated polyester resins, vinyl ester resins, sialyl phthalate resins, etc. Addition reaction type and radical polymerization type resins are suitable for the present invention because they can be cured under pressureless conditions and can avoid excessive flow of resin liquid.
用いる樹脂液の粘度は常温で、500ポイズ以下
のものが良い。 The viscosity of the resin liquid used is preferably 500 poise or less at room temperature.
気泡の消滅する過程は、虫ねがねや好ましくは
倍率が100倍の光学顕微鏡で確認できる。 The process of bubble disappearance can be confirmed using a magnifying glass or, preferably, an optical microscope at 100x magnification.
特別な工夫なしで、気泡は徐々に消滅するが、
気泡が消滅する過程は多分に含浸条件にも依存す
る。たとえば温度を上げるのは効果が薄い。超音
波を加えると、消滅するまでの時間が短縮できて
良い。加圧空気中に入れるのも良い。空気の溶解
量の小さい樹脂液を用いることも効果がある。 The bubbles will gradually disappear without any special measures, but
The process by which bubbles disappear largely depends on the impregnation conditions. For example, raising the temperature has little effect. Adding ultrasonic waves can shorten the time it takes for it to disappear. It is also good to put it in pressurized air. It is also effective to use a resin liquid with a small amount of dissolved air.
かくして、本発明により、従来困難であつた溶
剤を用いないで粘度の高い樹脂液を用いても尚、
含浸性に優れた積層板を製造でき、特に、本発明
は、本発明者らが既に提案している積層板の連続
製造法（例えば特開昭55−4838、特願昭55−1020
など）に効果的に適用できる。 Thus, according to the present invention, even if a highly viscous resin liquid is used without using a solvent, which was difficult in the past,
It is possible to produce a laminate with excellent impregnation properties, and in particular, the present invention is based on the method for continuous production of laminates that the present inventors have already proposed (for example, Japanese Patent Application Laid-Open No. 55-4838, Japanese Patent Application No. 55-1020).
etc.) can be effectively applied.
以下実施例により、本発明をさらに詳記する。 The present invention will be described in further detail with reference to Examples below.
実施例
市販のクラフト紙（巴川製紙製MKP−150をメ
チロールメラミン水溶液で処理し、メチロールメ
ラミンの付着量が紙の重量に対して、11％の処理
紙を得た。この紙の上方から粘度が４ポイズの市
販の不飽和ポリエステル樹脂（武田薬品製ポリマ
ール6304にクメンハイドロパーオキサイド１重量
部配合したもの）を流下させ、樹脂液含浸紙を得
た。この含浸紙をただちに気泡が巻き込まないよ
う注意深く５枚重ね合せた。この時樹脂液含浸基
材中に多数の気泡が確認できた。40分放置後、こ
の気泡は消滅した。しかる後、100℃１時間の条
件で、樹脂液を硬化させ厚さが1.6mmの積層板を
得た。板内に気泡はほとんどなかつた。Example A commercially available kraft paper (MKP-150 manufactured by Tomoekawa Paper Industries Co., Ltd.) was treated with a methylolmelamine aqueous solution to obtain a treated paper with an adhesion amount of methylolmelamine of 11% based on the weight of the paper. A commercially available unsaturated polyester resin (1 part by weight of cumene hydroperoxide mixed with Polymer 6304 manufactured by Takeda Pharmaceutical Co., Ltd.) of 4 poise was allowed to flow down to obtain paper impregnated with resin liquid.This impregnated paper was immediately washed carefully so as not to trap air bubbles. Five sheets were stacked on top of each other.At this time, many air bubbles were observed in the resin liquid-impregnated base material.The air bubbles disappeared after being left for 40 minutes.Then, the resin liquid was cured at 100°C for 1 hour. A laminate plate with a thickness of 1.6 mm was obtained. There were almost no air bubbles inside the plate.
比較例
実施例において、まだ樹脂液含浸基材中に気泡
が確認されるうちに硬化させたものの板内には多
数の気泡が存在した。Comparative Example In the example, although the resin solution-impregnated base material was cured while air bubbles were still observed, many air bubbles were present within the board.
Claims (1)
等の反応副生成物を生じない、それ自体硬化体と
なり得る硬化性樹脂液を含浸したシール状基材を
積層し、実質上無圧の条件下で硬化させることよ
りなる積層板の製造法において、基材に硬化性樹
脂液を含浸後、含浸シート状基材中に取り込まれ
た気泡が該樹脂液中に溶解し、消滅した後、硬化
させることを特徴とする積層板の製造方法。 ２ シート状基材が、セルロース繊維を主成分と
する紙である特許請求の範囲第１項記載の積層板
の製造方法。 ３ シート状基材がガラス布またはガラス不織布
である特許請求の範囲第１項記載の積層板の製造
方法。[Scope of Claims] 1 A seal-like base material impregnated with a curable resin liquid that does not contain a solvent and does not produce reaction by-products such as gas or liquid during the curing reaction process and can itself become a cured product, In a method for manufacturing a laminate that involves curing under substantially no pressure conditions, after impregnating a base material with a curable resin liquid, air bubbles taken into the impregnated sheet-like base material are dissolved in the resin liquid. A method for manufacturing a laminate, which comprises curing the laminate after it has disappeared. 2. The method for manufacturing a laminate according to claim 1, wherein the sheet-like base material is paper whose main component is cellulose fiber. 3. The method for manufacturing a laminate according to claim 1, wherein the sheet-like base material is a glass cloth or a glass nonwoven fabric.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55132158A JPS5757721A (en) | 1980-09-22 | 1980-09-22 | Production of laminated sheet |
| CA000386339A CA1167364A (en) | 1980-09-22 | 1981-09-21 | Production of bubble-free electrical laminates |
| DE8181107544T DE3173319D1 (en) | 1980-09-22 | 1981-09-22 | Process for producing a resin reinforced laminate |
| US06/304,692 US4388129A (en) | 1980-09-22 | 1981-09-22 | Production of bubble-free electrical laminates |
| EP81107544A EP0048491B1 (en) | 1980-09-22 | 1981-09-22 | Process for producing a resin reinforced laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55132158A JPS5757721A (en) | 1980-09-22 | 1980-09-22 | Production of laminated sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5757721A JPS5757721A (en) | 1982-04-07 |
| JPS6412231B2 true JPS6412231B2 (en) | 1989-02-28 |
Family
ID=15074712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55132158A Granted JPS5757721A (en) | 1980-09-22 | 1980-09-22 | Production of laminated sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5757721A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60226532A (en) * | 1984-04-25 | 1985-11-11 | Matsushita Electric Works Ltd | Production of resin-impregnated substrate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042566B2 (en) * | 1978-06-26 | 1985-09-24 | 鐘淵化学工業株式会社 | Method for continuously manufacturing electrical laminated insulation boards or metal foil clad laminates |
-
1980
- 1980-09-22 JP JP55132158A patent/JPS5757721A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5757721A (en) | 1982-04-07 |
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