JPS60127141A - Laminated board and manufacture thereof - 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 @layer plates used in the military, child equipment, electrical equipment, computers, etc., and a method for manufacturing the same.

[Background technology]

Conventionally, laminates are made by stacking the required number of resin-impregnated base materials, then placing metal foil on the top and bottom surfaces according to the needs of the pot, sandwiching the laminate between molding plates, and forming the laminate under heat and pressure together with a backing plate and cushioning material. Between the molded plates, @layer plate is 1
I only got one. In addition, in order to prevent the resulting laminates from being damaged during transportation, a film, paper, or the like is inserted between the laminates for packaging.

[Purpose of the invention]

The purpose of the present invention is to improve the productivity of laminates and to eliminate appearance defects during transportation.

[Disclosure of the invention]

The present invention will be described below in detail with reference to a laminate having a resin-impregnated substrate layer impregnated with an aqueous calcium chloride solution and an alginic acid compound aqueous solution on one side, and a method for manufacturing the same.

As the base material for the laminate of the laminate used in the present invention, glass,
Woven fabrics, non-woven fabrics, mats, paper, or combinations of these materials made of inorganic fibers such as asbestos, organic synthetic fibers such as lintel, polyamide, polyvinyl alcohol, and acrylic, and natural fibers such as cotton, and laminates. Examples of resins include phenolic resin, cresol resin, epoxy resin, unsaturated polynisder resin, melamine resin, polyimide, polycitadiene, polyamide, polyamideimide, polysulfone, polybutylene terephthalate, polyether ether ketone, fluorinated resin, etc. alone or modified. A substance, a mixture, etc. are used, and a solvent such as water, methyl alcohol, acetone, cyclohexanone, or styrene is added to adjust the viscosity as necessary.

Furthermore, metal foil such as copper foil, aluminum foil, brass foil, stainless steel foil, nickel foil, etc. can be placed on one side of the laminate depending on the requirements.

In the present invention, it is necessary to provide on one side of the laminate a resin-impregnated base material impregnated with an aqueous solution of calcium chloride and an aqueous solution of an alginic acid compound such as alginic acid or sodium alginate.

The calcium chloride aqueous solution and the alginic acid compound aqueous solution may be impregnated into the resin-impregnated base material separately, or may be impregnated into the resin-impregnated base material in advance as a mixed aqueous solution. In this way, the laminate having a resin-impregnated base material layer impregnated with an aqueous calcium chloride solution and an aqueous alginate compound solution on one side is sandwiched between metal plates with the treated layer side facing each other, and heated together with the patch plate and the cushioning material. A laminate is obtained by pressure molding, and after molding, it is divided between the +iJi layer to obtain two laminates between the molded plates. Furthermore, since the laminate of the present invention has a film layer, which is the above-mentioned treated layer, formed on one side, it is possible to eliminate appearance defects during transportation and the like.

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

〔Example〕

A glass cloth with a thickness of 0.15 vtyn is impregnated with an epoxy resin containing a curing agent so that the resin etc. is 6% by weight, and a copper foil 2 with a thickness of 1 micron is placed on one side of 8 resin-impregnated base materials 1 which are dried. Apply a calcium chloride aqueous solution and an alginic acid aqueous solution to 5o 'i/ni' on the opposite side of the laminate, and sandwich it between metal plates with the treated layer side 3 facing each other,
After heating and press-forming at 170°0150 for 90 minutes at the cape, it was divided between the treated layers to obtain two single-sided copper-clad laminates each having a thickness of 1.6 mm and having a film layer on the back side.

[Conventional example]

A laminate without a single film layer was obtained by processing the same laminate as in the example except that the same laminate as in the example was sandwiched between molding plates without providing a treatment layer on one side.

〔Effect of the invention〕

As shown in Table 1, the productivity of the laminate of the present invention was good, and no appearance defects occurred during transportation, confirming the superiority of the present invention.

Table 1 This is a comparison when the conventional example is set as 100.

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Claims (2)

[Claims] (1) A laminate having, on one side, a resin-impregnated base material layer impregnated with a calcium chloride aqueous solution and an alginic acid compound aqueous solution. (2) A laminate having a resin-impregnated base material layer impregnated with an aqueous calcium chloride solution and an aqueous alginic acid compound solution on one side is sandwiched between metal flutes with the treated layer side facing each other, and is placed between metal flutes, using a backing plate, and a resin-impregnated layer. 1. A method for manufacturing a laminate, which comprises forming the laminate together with a material under heat and pressure, and then dividing the plate between the treated layers.