JPS5964358A - Manufacture of 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 The present invention relates to a method for sucking Jm boards that require high dimensional stability, such as those used for printed wiring boards, and its purpose is to improve thickness accuracy as well as to improve thickness accuracy. This is to improve manufacturing efficiency.

As shown in Fig. 1, the conventional four-panel j-board is made by impregnating the resin for the plywood board into the resin for the laminate, laminating the required number of dried prepregs 1, and then placing the metal foil 2 on the outermost layer. Although the stacked ribs a were sandwiched between metal plates 3 for molds and molded under heat and pressure, it was inevitable that the thickness accuracy would deteriorate due to the laminate resin 4 melting and flowing out from the prepreg 1. Ta. Furthermore, the prepreg tends to shift during molding, and the melted and flowed resin becomes hardened pieces that adhere to the metal plate for the mold, which can damage the surface of the plate and cause defects when it is placed in the next molding process.

The present invention solves the above-mentioned drawbacks, and since the peripheral side surface of the laminate is covered with the outermost metal foil and then heated and press-molded, the resin for the laminate is prevented from melting and flowing out during molding. As a result, thickness accuracy can be improved and damage to the laminate surface caused by misalignment of the prepreg and hardened pieces can be prevented.

Next, the method of the present invention will be explained in detail. The resins for laminates used in the present invention include epoxy resin, phenol resin, unsaturated polyester resin, melamine resin, polyimide resin,
These include thermosetting resins in general, such as polybutadiene resins alone, mixtures, and modified products. The base material for the laminate can be woven or non-woven fabrics, organic fibers such as paper or cotton, organic synthetic fibers such as polyamide, polyvinyl alcohol, polyester, polyacrylic, glass, inorganic fibers such as asbestos, etc. be. Firefly JN4? (For +, a fluorescent material such as copper, aluminum, nickel, or X-casting is used, and if necessary, a glue layer or the like is provided on the prepreg side.

In addition, in the case of double-circuit drawing at-board, only the hotauro foil on either the top or bottom surface is the same as the prepreg size, and the remaining average-sized foil on one side covers the integral peripheral side surface B1≦. It is also possible.

Next, the method of the present invention will be explained based on examples.

EXAMPLE An example of obtaining the product #k by the method of the present invention will be described below with reference to the drawings. As shown in Figure 2, prepreg 1 with a resin content of 45% is impregnated into 0.1 mm thick kraft paper with a resol type phenolic resin varnish with a resin content of 50% (hereinafter simply referred to as %) and dried.
A cocoon of 8 pieces of cocooned paper is placed on top of the copper foil 2 with adhesive IW, which is larger than the outer dimensions of the prepreg and has a thickness of 35 microns, with the adhesive IA side facing the prepreg. The foil 2 is used to cover the side surface of the integral periphery of the product J, and then the mold is sandwiched between the metal plates 3 and molded under pressures of 100 M and 160 M.
A single-sided copper-clad laminate having a thickness of 1.6 days was obtained by molding for 60 minutes at °C. The thickness accuracy of the product J-plate is 16±0
．． 10 + a, there is no misalignment of the prepreg during molding, and no hardened resin pieces adhere to the metal plate, so there is no damage to the surface of the plate. Therefore, it was easy to fit in.

The same 8 sheets of prepreg as in the conventional example were piled up, and the highest thickness in history was 1 m.
A copper foil coated with a contact agent of 35 microns in thickness, which is the same as the external dimensions of the prepreg, was placed with the adhesive layer side facing the prepreg.The whole was then sandwiched between the firefly mold board as it was.Example. The thickness accuracy of a single-sided copper-clad laminate with a thickness of 1.6 mm obtained by processing in the same manner as above was lb ± 0.14 mm, and it was necessary to urgently prevent the prepreg from shifting during molding, and melting. Since the cured resin pieces adhered to the firefly-shaped metal 10,000 pieces, the surface of the laminate plate was damaged and the laminate was not integrated, making it difficult to assemble and resulting in poor manufacturing efficiency.

As described above, it was confirmed that the method of the present invention was able to achieve thickness accuracy of the teeth and increase manufacturing efficiency, and that the method of the present invention was superior.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of a laminated body formed by a conventional method, and FIG. 2 is a schematic cross-sectional view of a laminated body formed by the method of the present invention. 1 is a prepreg, 2 is a fluorescent foil, 3 is a mold plate, and 4 is a resin for a laminate that melts and flows out. Patent dispatcher Matsushita Kameko Co., Ltd. agent Masu Toshimaru Takemoto (two idiots) Figure 1 Figure 2

Claims (1)

[Claims] Manufacture of fjli laminates by impregnating resin for doveboards into the base for doveboards, laminating the required number of dried prepregs, and then heat-pressing the laminate with metal foil placed on the outermost layer. A method for manufacturing a metal foil-clad laminate, characterized in that the peripheral side surface of the m-shaped body is covered with the metal foil and then heated and press-molded.