JPS6219455A - Manufacture of laminated board - Google Patents

Abstract

(57) [Abstract] 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 method for manufacturing a laminate for printed wiring boards used in electrical equipment, such as electronic equipment, communication equipment, and computing equipment.

[Background technology]

Conventionally, in order to use a laminate board as a printed wiring board, holes for mounting components or through holes were drilled.

It is necessary to perform external punching, and in the case of paper-based phenolic resin laminates, which are a typical laminate, the laminate is heated to plasticize it and then punched. However, the pore diameter and external dimensions during heating shrink when cooled to room temperature, resulting in variations in pore diameter and external dimensions.

In addition, the remaining typical laminates, glass cloth-based epoxy resin laminates, are difficult to punch and require drilling holes and router processing, leading to increased processing costs. Ta. For this reason, attempts have been made to use a thermoplastic resin sheet or a thermoplastic resin laminate in which steel foil is bonded to a thermoplastic resin plate, and perform punching at room temperature. Board nine warped,
There were problems such as twisting and deflection due to the ICs attached to the parts.

[Purpose of the invention]

An object of the present invention is to provide a method for manufacturing a laminate that can be punched at room temperature and that does not warp or twist during heat treatment during component mounting.

[Disclosure of the invention]

In the present invention, a long thermosetting resin-impregnated base material is arranged on the top and bottom surfaces of a long thermoplastic resin sheet, and a long metal foil is further placed on the top and/or bottom surface of the long thermoplastic resin sheet, and then the whole is continuous. The feature is that it is cut to the required size after lamination molding, so it can be punched at room temperature, and it is possible to efficiently manufacture laminated plates that will not warp or twist due to heat treatment during component mounting. Hereinafter, the method of the present invention will be explained in detail.

The elongated thermoplastic resin y-) used in the present invention includes thermoplastic polyimide resin, polybutadiene resin, polyurethane resin, polyphenylene sulfide resin, polyphenylene oxide resin, polypropylene resin, polyamide resin, polyester resin, polycarbonate resin, polyacetal resin, and fluorocarbon resin. Any elongated sheet of heat-resistant thermoplastic resin such as synthetic resin, silicone resin, etc. can be used, and there is no particular limitation. The long thermosetting resin-impregnated base materials include phenolic resins, cresol resins, epoxy resins, unsaturated polyester resins, melamine resins, polyimide resins, diallyl phthalate resins, etc. alone, mixtures, and modified resins such as glass, asbestos, etc. A long resin-impregnated base material made of inorganic fibers, organic synthetic fibers such as polyester, polyamide, polyvinyl alcohol, polyacrylic, and natural fibers such as cotton, such as woven fabrics, nonwoven fabrics, Maputo, cheesecloth, paper, etc. One or more sheets can be used as needed. The long metal foil is a metal foil made of steel, aluminum, stainless steel, brass, iron, nickel, etc., or an alloy, and if necessary, an adhesive layer must be provided on the metal foil. It is also possible. Continuous lamination molding means may be a lamination molding method using a moving press, multi-roll, roll, double belt, etc., and is not particularly limited.One embodiment of the present invention will be described below based on the illustrated embodiment. I will explain.

Embodiment FIG. 1 is a dark road manufacturing process diagram showing an embodiment of the present invention. As shown in the figure, a long polyphenylene oxide resin sheet 1 with a thickness of 1.4 ff was printed on the top and bottom surfaces of a long polyphenylene oxide resin sheet 1. 0
．． A single fin of epoxy resin-impregnated glass cloth 2 is placed on each fin, and a copper foil 3 with an adhesive layer 3 having a shore height of 0.0351111 is placed on the bottom surface thereof, and then continuously heated with a hot roll 4 at 160 to 210°C. After lamination molding, the laminated plate was cut into required dimensions using a culitor 5.

Conventional Example 1 A laminate of polyphenylene oxide resin sheets with a thickness of 1.6M and a steel foil with a 0.035m thick adhesive layer disposed on the lower surface of E1 was heated and pressure-molded using a hot press to obtain a laminate. Ta.

Conventional Example 2 A laminate was obtained by heating and pressure forming a laminate in which steel foils of 0.035all thickness were arranged on the top and bottom surfaces of eight sheets of epoxy resin-impregnated glass cloth with a thickness of 0.2n using a hot press. Ta.

[Effects of the invention] Punching processability of the laminates of Examples and Conventional Examples 1 and 2,
The performance of the laminate obtained by the method of manufacturing a laminate of the present invention was good in terms of warping and twisting during heat treatment, as shown in the FA1 table, confirming the superiority of the method of manufacturing a laminate of the present invention.

Note: *This is the ratio when the conventional product is set as 100.

[Brief explanation of drawings]

FIG. 1 is a simplified process diagram showing an embodiment of the present invention. 1 is a long thermoplastic resin sheet, 2 is a long thermosetting resin-impregnated base material, 3 is a long metal foil, 4 is a hot roll, and 5 is a cloth.

Claims (2)

[Claims] (1) A long thermosetting resin-impregnated base material is arranged on the top and bottom surfaces of a long thermoplastic resin sheet, and a long metal foil is further placed on the top and/or bottom surface of the long thermoplastic resin sheet, and then the whole is continuous. A method for manufacturing a laminate, which comprises cutting the laminate into required dimensions after lamination molding. (2) The method for manufacturing a laminate according to claim 1, wherein the thermoplastic resin is a polyphenylene oxide resin.