JPS60248346A - Glass cloth base material fluoroplastic laminated board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a glass cloth-based fluororesin laminate used for printed wiring boards used in electrical equipment, electronic equipment, computers, etc.

[Background technology]

Conventionally, glass cloth-based fluororesin laminates have been produced by stacking the required number of sheets with a fluororesin content of ~1% by weight (hereinafter simply referred to as %), and then, if necessary, applying metal foil to the upper and/or lower surfaces. It is formed by laminating and molding a mounted laminate, and although it has excellent heat resistance, it has problems with poor moisture resistance, drilling workability, and metal foil peel strength.

[Purpose of the invention]

The objects of the present invention are moisture resistance, drilling workability,
An object of the present invention is to provide a glass cloth-based fluororesin laminate having excellent metal foil peel strength.

[Disclosure of the invention]

The present invention is a fluff with a fluororesin content of 50 to 80%.

Because it is a glass cloth-based fluororesin laminate that uses legs, the resin component in the entire laminate is higher than before, and the glass cloth base material component is less, so moisture resistance,
The present invention will be described in detail below as it has been able to improve the drilling workability and the metal foil peeling strength.

The fluororesin used in the present invention is ethylene tetrafluoride 7m resin,
In general, fluorocarbon resins such as tetrafluoroethylene perfluorovinyl polymer copolymer, tetrafluoroethylene hexafluoroglohylene copolymer, tetrafluoroethylene ethylene [i-combination, trifluoroethyl chloride resin, etc.] be. As the glass cloth base material, glass cloth or glass non-woven fabric such as hachiya weave, satin weave, plain weave, open plain weave, leno weave, pattern weave, etc. can be used, but it is preferable to use plain weave glass cloth because of its heat resistance and dimensions. This is highly desirable in terms of stability.

Fluororesin content relative to glass cloth base material is 50-80%
It is necessary to That is, if it is less than 80%, moisture resistance, drilling workability, and metal foil peel strength cannot be improved.
%, dimensional stability decreases. As the metal foil, copper foil, brass knot, aluminum foil, nickel # foil, stainless steel M foil, etc. can be used, and if necessary, an adhesive layer can be provided on the metal foil.

The present invention will be explained below using examples.

Example 1 A glass cloth (manufactured by Nittobo Co., Ltd., trade name Wg18 to 104) was added to a polytetrafluoroethylene resin die version (manufactured by Daikin Industries, Ltd., trade name Polyflon) with a resin amount of 7.
A pre-reg was obtained by impregnating it to a concentration of 5%, melting and cooling, and 8 sheets of the pre-reg were stacked on top of each other, with a thickness of 0.0 mm on the bottom surface.
The laminates on which 35M adhesive-coated copper foils were placed were laminated under pressure and laminated for ω minutes at 400"C to obtain a 1.6" thick lath cloth-based fluororesin laminate.

Example 2 The same glass cloth as in Example 1 was impregnated in the same polytetrafluoroethylene resin die version as in Example 1 so that the resin amount was 5%, melted, and cooled to obtain a brief leg, and six pieces of the fabric leg were stacked. In addition, a laminate was prepared in which one of the same brief legs as in Example 1 was placed on the bottom surface, and then the same adhesive-coated copper foil as in Example 1 was placed on the top and bottom surfaces, respectively. Laminate molding was carried out in the same manner as in Example 1 to obtain a glass cloth-based fluororesin laminate having a thickness of 1.6M.

Conventional Example The same glass cloth as in Example 1 was impregnated in the same polytetrafluoroethylene resin die version as in Example 1 so that the resin amount was 6%, melted, and cooled to obtain fiber legs, and 8 pieces of the fiber legs were obtained. A laminate with the same adhesive-coated copper foil as in Example 1 placed on the bottom surface of each layer was laminated and molded in the same manner as in Example 1 to form a 1.6W thick glass cloth-based fluororesin laminate. Obtained.

〔Effect of the invention〕

As is clear from Table 1, the moisture resistance, perforation workability, and copper foil peeling strength of the glass cloth-based fluororesin laminates of Examples 1 and 2 and Conventional a] are as clear as Table 1. The performance of the plate was good, confirming the superiority of the present invention.

Table 1: Water absorption rate after 2 hours of immersion in VC boiling water at 100"C.

Claims (1)

[Claims] (1) Glass characterized by being formed by laminating and molding a laminate in which a required number of brig legs with a fluororesin content of 0 to 80% by weight are stacked, and metal foil is further placed on the upper and/or lower surfaces as necessary. Fabric-based fluororesin laminate.