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公开(公告)号：KR1019960006294B1
公开(公告)日：1996-05-13
申请号：KR1019880700546
申请日：1987-09-10
Applicant: 캄퍼지테크리미티드
IPC: B32B5/12
CPC classification number: B29C70/347 , B29C53/564 , B29C53/58 , B29C53/76 , B29C53/8016 , B29C53/821 , B29C70/202 , B29C2793/009 , B29L2031/3425 , H05K1/0366 , H05K3/0047 , H05K3/4626 , H05K2201/0145 , H05K2201/0278 , H05K2201/0287 , H05K2203/085 , H05K2203/1327 , Y10S428/901 , Y10T29/49158 , Y10T29/49176 , Y10T428/24074
Abstract: A warp-free laminate is produced by winding a first set of strands or filaments (34) about a flat mandrel with a second set of strands (36) being wound transverse to the first set. The two sets may be perpendicular to each other. The filaments are maintained under a controlled tension while being impregnated with a resin and during subsequent cure of the resin. In order to permit the formation of a warp-free product, the winding pattern is such that it forms a mirror image about a neutral axis or plane of symmetry. The winding pattern may be chosen to provide interstices in a predetermined pattern permitting punching out or high speed drilling of hole openings (106, 108, 110, 112, 114) for subsequent printed circuit applications.
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