JP2638924B2 - Manufacturing method of laminated board - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a laminated board used for electronic equipment, electric equipment, computers, communication equipment and the like.

[Conventional technology]

Conventionally, when a laminate is continuously heated and pressed, a protector is provided at an end in the width direction of the long laminate in order to prevent the pressing devices arranged above and below from coming into contact with each other. It protects the pressurizing device.

[Problems to be solved by the invention]

As described in the prior art, in the continuous production of a laminated board, a laminate obtained by continuously heating and pressing a long laminated body due to the presence of a protector has a widthwise end portion that is closer to the center than a central portion. Thickening was inevitable. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems in the related art, and an object of the present invention is to provide a method for manufacturing a laminated plate capable of obtaining a laminated plate having a uniform thickness in the entire width direction. is there.

[Means for solving the problem]

In the width direction of the long laminate in which the long metal foil is disposed on the upper surface and / or the lower surface of the required number of long resin-impregnated dry substrates, the present invention has a protector at its end and a thickness of the laminated plate inside. Since the spacers are arranged in the order of ± 100 microns and continuously cut by heating and pressing, and then cut to required dimensions, the pressing force is made uniform by the spacers. The present invention will be described in detail below.

Examples of the long strip-shaped base material impregnated and dried with the long resin used in the present invention include glass base materials such as glass cloth, glass paper, and glass nonwoven fabric, as well as paper, synthetic fiber cloth, synthetic fiber nonwoven fabric, asbestos paper, and cotton. Although a cloth or the like is used, it is preferable to use a glass cloth, a glass paper, a glass nonwoven fabric, or the like which has a large thickness adjusting effect. As the resin to be impregnated into the long strip-shaped base material, an unsaturated polyester resin, diallyl phthalate resin, vinyl ester resin, epoxy acrylate resin, epoxy resin, phenol resin, melamine resin, etc., alone, mixture, or modified Objects are used. The resin may be impregnated with only the same resin, but the primary impregnation with the same resin or a different resin is a low-viscosity resin, and the secondary impregnation is made into a plurality of impregnations such as impregnation with a higher-viscosity resin than the primary impregnation. More uniform impregnation may be performed. Of course, the resin has a curing agent, a crosslinking agent,
A polymerization initiator, a monomer diluent and the like can be added, and if necessary, additives such as an inorganic powder filler and a short fiber filler can be added. After the long strip-shaped base material is impregnated with the above resin, heating is performed to obtain a long resin-impregnated dry base material. Copper, aluminum, and long metal foil
A single, alloy, or composite foil of iron, stainless steel, nickel, zinc, brass, or the like may be used, and an adhesive layer may be provided on one side of the metal foil as needed to further improve the adhesiveness. The curing time and the curing temperature vary depending on the type of the resin and can be selected depending on the resin used. The pressure for curing is preferably from the contact pressure to 40 kg / cm ² , and can be selected depending on the resin used. As the spacer, a laminated body of paper or cloth, a rubber or resin molded article or a resin-impregnated paper, cloth, or a combination thereof can be used.The thickness of the spacer is ± 100 μm of the laminated plate thickness. Must be used. The width of the spacer is 20
100100 mm is preferred. As the protector, a commonly used protector such as rubber and resin can be used as it is, and it is not particularly limited.

An embodiment of the present invention will be described below with reference to the illustrated embodiment.

Embodiment FIG. 1 is a simplified process diagram showing one embodiment of a method for manufacturing a laminated board according to the present invention, and FIG. 2 is a simplified partial cross-sectional view of a pressing unit.

As shown in FIG. 1, three pieces of long epoxy resin impregnated dry glass cloth 1 having a width of 105 cm and a thickness of 0.15 mm are stacked, and a long copper foil 2 having a width of 105 cm and a thickness of 0.035 mm is disposed on the upper and lower surfaces thereof. Long laminated body 4 which is installed and continuously laminated by laminating rolls 3
At a width direction end to a paper spar 5 having a thickness of 0.5 mm and a width of 50 mm, and a rubber protector 6 in that order, and a molding pressure of 10 kg / cm ² , 16
After continuous heat and pressure laminating at 5 ° C. for 10 minutes, the cured long laminated body was cut at intervals of 100 cm with a cutter 8 to obtain a 0.5 mm-thick double-sided copper-clad glass cloth-based epoxy resin laminate.

Comparative Example A treatment was performed in the same manner as in the example except that the spacer was not used to obtain a 0.5 mm-thick double-sided copper-clad glass cloth-based epoxy resin laminate.

Table 1 shows the thickness accuracy of the laminates of the examples and the comparative examples.

[Effect of the Invention] The present invention is configured as described above. The method for manufacturing a laminate having the configuration described in claim 1 has the effect of improving the accuracy of the thickness of the laminate.

[Brief description of the drawings]

FIG. 1 is a simplified process diagram showing one embodiment of a method for manufacturing a laminated board according to the present invention, and FIG. 2 is a simplified partial cross-sectional view of a pressing unit. 1 is a long resin impregnated and dried base material, 2 is a long metal foil, 3 is a laminating roll, 4 is a long laminate, 5 is a spacer, 6 is a protector, 7 is a double belt device, 8 is a cutter,
9 is a laminated board, 10 is an endless belt.

Claims (1)

(57) [Claims] 1. A protector is provided at an end portion in a width direction of a long laminate in which a long metal foil is disposed on an upper surface and / or a lower surface of a required number of long resin-impregnated dry substrates. A method of manufacturing a laminated board, comprising arranging spacers having a thickness of ± 100 μm in order, continuously forming them by heating and pressing, and then cutting them to required dimensions.