JPS5942930A - Manufacture of laminated plate - Google Patents

Abstract

PURPOSE:To prevent the outflow of molten resin and the deviation of pre-preg for raising the thickness accuracy of a laminated plate by a method in which a quick-setting material is coated on the peripheral and side portions of a laminated material formed by laminating plural pre-pregs impregnated with a resin and hardened, and then the laminated material is subjected to a hot press molding. CONSTITUTION:A given number of pre-pregs 1 obtained by impregnating a resin, e.g., epoxy resin, etc., into base materials for a laminated plate and then drying them are laminated. A quick-setting material 4 (e.g., those having a hardening time of 60min or less at ordinary temperature), e.g., phenolic resins, epoxy resins, etc., is coated in a thickness of 0.05-1mm. on the peripheral and side portions of the laminate material and then hardened. The laminate material is put between the metal plates 2 of molds and molded by hot press molding to obtain an objective laminated plate.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention 11 relates to a method for manufacturing a laminate that requires high dimensional stability, such as for use in printed wiring boards, part 1.
The aim is to improve manufacturing efficiency as well as improve thickness accuracy.

Conventional laminates are manufactured by impregnating a laminate resin into a laminate base material and drying the prepreg 1 as shown in Fig. 1. y Mina 1
(1:i'? +;・"11-f'+17 The layer a was sandwiched between the metal plates 2 for the mold and molded under heat and pressure.) The thickness accuracy was 1 because it was made of resin 3 for the J-plate 11' and J.It was impossible to etch it.Furthermore, there was also the drawback that the C prepreg was easily misaligned during molding.

The method t of the present invention is performed by laminating the required number of prepregs.
t A fast-curing material is applied to the edges and side surfaces of the A+7 body in advance, and the resin is heated and pressed after being cured, so the resin for the r/i layer plate is prevented from melting and flowing out during molding. Therefore, it is possible to improve the thickness of the prepreg as well as improve the thickness of the prepreg.
It is something that can increase defense to 1.

Next, the method of the present invention will be explained in detail. Resin V for I'+ζ Lua board used in the present invention: Epoxy v1 fat, phenol←4 fat, unsaturated fn polyester resin, melamine 4i
``61 resin, polyimide resin 11ii, polybutadiene resin, etc., alone or in mixtures, or modified products, and other thermosetting resins in general.

Vl) 3 As a base material for the board, use natural fibers such as 41 paper and wood, synthetic fibers such as polyamide, polyvinyl alcohol, polyester, polyacrylic, etc., and woven fabrics such as p) Shiki fibers such as Gawas and Aspes 1. Non-woven fabric or mat.

Phenol resin is used as a fast-curing material that is applied and cured in advance on the periphery of the 11 bodies on f/f and on the 1 side of jllj.
Epoxy same month 11. Unsaturated polyester resin, melamine resin, polyurethane resin, polyimide resin, alkyl resin, sodo resin, silicone resin, 7-lantern tung resin, allyl resin, 7
' / IJ resin, nylon resin, polyvinyl type '3r
Paints, adhesives, varnishes, etc. made of J IJtt alone or in mixtures or modified products are preferably used.
The curing time of the J-curable paper is within 60 minutes at room temperature.
It is desirable that there be. That is, if the time exceeds 60 minutes, the work efficiency will decrease. The periphery and side surface portion are the periphery portion and the entire side surface group of 0.2 to 5° toward the inside l]l[ from the laminate periphery. Further, the coating thickness of the fast-curing material is not particularly limited and is preferably 0.06 to 1 #η. That is, if it is less than 0.05M, it will not be possible to prevent the resin from melting and flowing out, and if it exceeds 1N, the curing time will be delayed.

Next, the method of the tree invention will be explained using examples.

Regarding the example of obtaining a tt't htl board according to Example A/Invention 71', the deviation is as follows. As shown in Figure 2,
1k containing resol type phenolic resin varnish of 0% (hereinafter referred to as % and Kisu) on 19% old IQ!v kraft paper.
The curing time in al'C was applied to the periphery and side surface of the rim for 10 minutes inward from the periphery of a laminate a in which 8 sheets of 1 Repreg 1 with a resin content of 1% were laminated. Apply epoxy 4'6J fat thread adhesive with a thickness of 0.
．． After coating and curing to a thickness of 2M, it was sandwiched between metal plates 2 for molds and molded under a pressure of 100 #q, toughness, 16
IM molded for 60 minutes at 0°C to 1v and 1.6 nry.
A laminate of (′!q) was obtained.The thickness accuracy of the laminate was e-6
i: o, 10 groups, and there was no slippage of the Gripreg during molding, and it was easy to remove because the i layer was integrated.

Comparative Example Eight pieces of Gripreg, which are the same as those in the example, were sandwiched between 1 metal plates for molds and processed in the same manner as in the example. 1.6 wI (thickness accuracy of the layer plate was 16±0.14 sη, and care was required to prevent the occurrence of deviation of 1 reso leg during molding, resulting in poor manufacturing efficiency.

As described above, according to the method of the present invention, it was possible to achieve an increase in thickness of 111 degrees and increase the efficiency of the carp, confirming the superiority of the method of the wooden invention.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of 'tA' when bond K1 is molded by the conventional method, and FIG. 2 is a schematic cross-sectional view when bond K-7 is molded by the method of the present invention. l... Alipreg, 2... Metal plate for mold, 3...
Resin for 1lcf laminate that melts and flows out, 4...JcA size with OUP property. Patent applicant: Matsu [Denko Co., Ltd. T44 Representative Patent Attorney: Satoshi Takemoto (and 2 others) Figure 1 Figure 2

Claims (2)

[Claims] (1) When producing a laminate by heating and pressing a laminate obtained by laminating a required number of prepregs impregnated with resin for laminates and dried, pre-preparation is applied to the periphery and side surfaces of the laminate. A method for manufacturing a laminate, characterized in that a fast-curing material is first coated, cured, and then heated and press-molded. (2) A claim characterized in that the curing time of the fast-curing side slope is within 60 minutes at room temperature? rS1. Method for manufacturing a laminate.