JPH01225518A - Manufacture of laminate - Google Patents

Abstract

PURPOSE:To prevent laminate surfaces from generating creases by making the thickness of a metal plate in contact with a cushioning material thicker than that of a metal plate not in contact with by a fixed ratio when laminated materials constituted of resin impregnated base materials and metallic foils are manufactured by using a cushioning material and a carrier plate. CONSTITUTION:Phenol resin, epoxy resin, fluorine resin or the like are used alone or used in the form of a mixture or the like as the resin for a resin impregnated base material, and woven cloth constituted of inorganic fibers, synthetic fibers and natural fibers, non-woven cloth or paper, or else combination of said materials are used as the base material, while copper, aluminum or the like are used for metallic foils. Iron, aluminum or the like are used alone or as a composed product, and its thickness is 50-200% thicker than the thickness of a metallic plate not in contact with. An elastic material such as synthetic resin, cloth, paper or the like is used for a cushioning material. A plurality of units of laminates constituted of resin impregnated base materials and metallic foils are inserted between metal plates and overlapped, outside of which a carrier plate is provided through a cushioning material, and the generation of creases on the surface of laminates can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing an electrical laminate used in electrical equipment, computing equipment, communication equipment, etc.

[Conventional technology]

Conventionally, electrical laminates have been made by stacking 1 to 15 sets of laminates made of a resin-impregnated base material and gold @ 16 sandwiched between conference plates, with a carrier plate placed on the outside with a cushioning material interposed between the hot plates. It is obtained by sandwich heating and surface pressure lamination molding, and the metal plates are all of the same thickness.

[Problem that the invention seeks to solve]

As described in the prior art section, if all the metal plates are of the same thickness, wrinkles will occur on the surface of the electrical laminate near the heating plate. The present invention has been made in view of the above-mentioned problems in the prior art, and its object is to provide a method for manufacturing an electrical laminate with no wrinkles on the surface.

[Means for solving problems]

In the present invention, when forming a laminate consisting of a resin-impregnated base material and a metal foil with a metal plate, a cushion material, and a carrier plate, the thickness of the metal plate in contact with the sheet material is
This method of manufacturing a laminate is characterized by increasing the thickness of the non-contact metal plate by 20 to Boo, thereby eliminating wrinkles on the narrow side of the laminate.The present invention will be described in detail below.

The resins of the resin-impregnated base material according to the present invention include phenolic resin, cresol resin, epoxy resin, unsaturated polyester resin, melamine resin, polyimide, polybutadiene, polyamide, polyamideimide F1 polysulfone,
Polyphenylene sulfide, polyphenylene oxide, polybutylene terephthalate, polyether ether ketone, fluorinated resin, etc. alone, modified products, mixtures, etc. are used, and if necessary, solvents such as water, methyl alcohol, acetone, cyclohexanone, styrene, etc. are used to adjust the viscosity. The base material is woven fabric made of inorganic fibers such as glass and asbestos, organic synthetic fibers such as polyester, polyamide F1, polyvinyl alcohol, and acrylic, and natural fibers such as cotton, moth-free fabric, marito, etc. Paper or a combination of these materials, etc.

Metal foils are metal foils, alloys, and composites of copper, aluminum, iron, nickel, zinc, etc., and the adhesive surface is chemically and/or physically treated as necessary, and an adhesive layer is provided as necessary. It is something. The gold 4 plate that is present between the laminates is a single, alloy, or composite product of iron, aluminum, copper, two-layered steel, etc., with a thickness of 1 to 5 fins, and a 1 liter type layer on the surface as necessary. can be provided, but
It is necessary to make the thickness of the metal plate in contact with the perforated material 50 to 200 times thicker than the thickness of the non-contact metal plate.

Any material having elasticity, such as rubber, synthetic resin, cloth, paper, board, plywood, etc., can be used as the carrier plate, and conventional materials can be used as is for the A0 carrier plate.

The present invention will be explained below based on examples.

Example Thickness: Q, 2 Fml glass cloth, epoxy resin (Shell Chemical Co., Ltd. Exhibition, product name: Epicoat 1001) 10
0 parts by weight (hereinafter simply referred to as parts), dicyandiamide 4
A resin obtained by impregnating and drying an ebony vim fat varnish consisting of 2 parts, 0.2 parts of benzyldimethylamine, and 100 parts of methyloxytol so that the amount of resin after drying is 50 parts by weight or less. Thickness u, upper and lower surfaces of 7 impregnated base materials
A stainless steel metal plate with a thickness of 2n is sandwiched between each of the IO sets of laminated bodies each having a copper foil of o3sm, and a stainless steel metal plate with a thickness of 4fl is placed on the outermost side. Made of iron with a thickness of 5ff, using a 3N cloth-filled rubber plate as a crisscross material! After arranging the Ir layer plates, they were sandwiched between hot platens, and the molding pressure was 4 aiq/d, i ss°C.
TEAS+OL&1171 Heat and pressure molding was performed to obtain Lθ sheets of 1.6fi thick double-sided laminate.

Comparative Example Ten double-sided steel-clad laminates with a thickness of 1.6 fi were obtained in the same manner as in the example except that stainless steel metal plates with a thickness of 2 fl were used between the laminates and on the outermost side.

Table 1 shows the wrinkle-generating groups on the surface of the laminates of Examples and Comparative Examples.

〔Effect of the invention〕

The present invention is constructed and discussed as described above. The method for manufacturing a laminate having the configuration described in claim 1 has the effect of significantly reducing the wrinkle-generating groups on different surfaces of the laminate.

Claims (1)

[Claims] (1) When layer-molding a laminate consisting of a resin-impregnated base material and metal foil using a metal plate, cushioning material, and carrier plate, the thickness of the metal plate in contact with the cushioning material should be 50 to 200 times smaller than the thickness of the non-contact metal plate. % thickening method for producing a laminate.