JPS60145841A - Single-side metallic foil lined 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 single-sided metal foil-clad laminate used in electronic equipment, communication equipment, and computer equipment.

[Background technology]

Dimensional accuracy has been strongly desired for parts used in recent electronic equipment, electric equipment, communication equipment, computers, etc., which are highly oriented towards higher performance and smaller size. On the other hand, laminates are produced using a multi-stage press with a number of heating plates, and 8 to 15 sets of laminates made of resin-impregnated base material are pressed between the heating plates.
- Laminate molding is performed by inserting the laminates through the laminate, but since the molding method is such that 160 to 450 laminates can be obtained in one laminate molding, the flow of molten resin between the laminates during molding is uneven. However, the dimensional accuracy of the laminate, especially the warpage accuracy, was low.

[Purpose of the invention]

An object of the present invention is to provide a laminated plate with good anti-corrosion accuracy.

[Disclosure of the invention]

The present invention relates to a laminate made by heating and pressing a laminate in which a required number of resin-impregnated base materials are stacked and a metal foil is placed on one side, from the side opposite to the metal foil toward the metal foil side. Since this is a single-sided metal foil-clad laminate characterized by a large amount of resin in the resin-impregnated base material, normally there is no shrinkage of the metal foil, so warpage should occur with the metal foil side facing outward, but in the present invention, the metal foil is Since the amount of the resin, which has a higher shrinkability toward the foil side, is greater, the shrinkability between the metal foil side and the opposite side to the metal foil is balanced, and therefore, it was possible to eliminate the problem. The present invention will be explained in detail below.

The base materials used in the present invention include woven fabrics, nonwoven fabrics, mats, or paper made of inorganic fibers such as glass and asbestos, organic synthetic fibers such as polyester, polyamide, polyvinyl alcohol, and acrylic fibers, and natural fibers such as cotton. It is a combination base material, etc., and the resins include phenol resin, RiVsol resin, epoxy resin, unsaturated polynisder resin, melamine resin, polyimide, polybutadiene, polyamide,
Polyamideimide, polysulfone, polyethylenede V7 tart, polyethernylene ketone, fluorinated resin, etc. alone, modified products, mixtures, etc. are used, and if necessary, water, methyl alcohol, acetone, cyclohexanone, etc. are used to adjust the viscosity. Styrene Nfi (D'f6 tlX is added. The metal foil used is copper foil, aluminum foil, brass foil, nickel foil, stainless steel V-sugar foil, etc., and if necessary, adhesive is applied to one side of the metal foil. In the case of a laminate in which the resin-impregnated base material is laminated with the resin-impregnated base material, the amount of resin in the resin-impregnated base material should be increased from the side opposite to the metal foil toward the metal foil side. is necessary, and preferably the difference in resin amount between adjacent resin-impregnated substrates is 2% by weight (
[hereinafter simply expressed as %] or less is desirable. That is, 2
%, the generation of scum V and paris tends to increase. The present invention will be explained below using Examples.

〔Example〕

A curing agent-containing epoxy resin was applied to a gaff cloth with a thickness of 0.15 μm, and the resin amount was 35.5%, 37%, 38.5%, 40%,
A resin-impregnated base material was obtained by impregnating and drying the resin-impregnated base material to 41.5%, 43%, 44.5%, and 46%, respectively. , 38.5
%, 4OZ, 4S%, 44.5%, and 46%, and placed a micron-thick copper foil on the top surface and heated it to 165°C15.
Lamination molding was carried out for 90 minutes at zero digits to obtain a single-sided copper-clad laminate having a thickness of 1.6 mm.

[Conventional example]

A single-sided copper-clad laminate was obtained in the same manner as in the example except that eight resin-impregnated substrates with a resin amount of 41.5 zero were used.

〔Effect of the invention〕

As is clear from Table 1, the warpage accuracy of the single-sided copper-clad laminates of the examples and the conventional example confirms that the performance of the single-sided copper-clad laminates of the present invention is good and superior to that of the present invention.

Table 1

Claims (1)

[Scope of Claims] ill In a laminate made by heating and pressing a laminate in which a required number of resin-impregnated base materials are stacked on one side and metal foil is placed on one side, the metal foil is applied from the opposite side of the metal foil. A single-sided metal foil-clad laminate characterized by increasing the amount of resin in the resin-impregnated base material toward the side. (2) The single-sided metal foil-clad laminate according to claim 1, wherein the difference in the amount of resin in the resin-impregnated base material laminate is approximately 2% by weight or less between adjacent resin-impregnated base materials. .