JPS58210690A - Thin film copper-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 thin copper-clad laminate used as a multilayer copper-clad laminate (thin mulch material) or the like.

When manufacturing thin steel-clad laminates with a thickness of 100 microns or less as multilayer steel laminates, conventionally, glass cloth has been used as the base material, and in order to reduce the unit weight, glass cloth with a diameter of 5. A monofilament as small as ~7μ was used, and the number of implants was also reduced. However, since this material has a coarse weave, it tends to become uneven during resin impregnation and drying and molding, and dimensional changes are large.
It was easy to cause variations in dimensions. Furthermore, since the monofilament diameter was too small, the reinforcing effect was also small.

This invention aims to solve such problems.

For this purpose, glass monofilaments with a diameter of 9
Use μ, and the number of drives is 55-55 vertically and horizontally.
This is achieved by increasing the number of lines to 65 lines/in (55-65 lines per inch).

Therefore, the thin steel clad laminate according to the present invention uses monofilament having a diameter of 9 μm and has a vertical shape.

It is characterized in that a glass cloth woven in such a manner that the number of horizontal strands is 55 to 65 strands/in is used as the base material. This will be explained in detail below.

In this invention, a monofilament with a diameter of 9μ is used as the base material, and the number of vertical and horizontal implants is 55 to 65.
A glass cloth woven into a plain weave or the like is used. It is better to use thread with a reduced number of bundles.

As the resin for the laminate, thermosetting resins such as epoxy resins, phenol resins, polyester resins, melamine resins, and polyimide resins are used.

Copper foil for general laminates may be used as is.O Points in which the base material is impregnated with synthetic resin, dried, overlapped with copper foil, and molded under heat and pressure to form a copper-clad laminate. is the same as before.

As described above, the thin copper-clad laminate according to the present invention uses a monofilament having a diameter of 9 μm, and is made vertically.

Because we used glass cloth as the base material, which was woven so that the number of horizontal threads was 55 to 65 per inch, the number of intersection points of the threads on the cloth increased, and the rigidity of the threads increased, so the unit weight hardly increased. () Zero bending during impregnation drying and molding was prevented, dimensional changes and variations were prevented (and the reinforcing effect of the base material was increased).

Next, examples will be described together with comparative examples.

〔Example〕

Monofilament diameter 9μ, number of vertical implants 59/i
n, y: y 61 pcs/in of plain woven glass cloth was impregnated with epoxy resin varnish and dried to obtain a prepreg with a resin content of 40% by weight, which was then laminated with copper foil and subjected to a pressure of 100 kg/cm2. A thin copper-clad laminate was obtained by lamination molding at a temperature of 150'C for 60 minutes.

[Comparative example]

A thin steel-clad laminate was obtained in the same manner as in the example except that a plain weave glass cloth with a monofilament diameter of 5 μm and a number of implants of 59 vertically/in and horizontally 46/in was used as the base material. .

When the dimensional changes of the thin copper-clad laminates of Examples and Comparative Examples were examined, it was -0.07 points in Examples, which was superior to -0.141 in Comparative Examples.

Patent applicant Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] (1) Using a monofilament with a diameter of 9μ, vertically. A thin steel-clad laminate, characterized in that a glass cloth woven in such a way that the number of horizontal threads is 55 to 65 per inch is used as a base material.