Reinforced plastic laminates for use in the production of printe

Details Reinforced plastic laminates for use in the production of printe Reinforced plastic laminates for use in the production of printe

1989-08-23

1991-08-06

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428209, 428245, 428285, 428408, 4284735, 428901, 361397, 361398, B32B 307

Patent

active

050376918

ABSTRACT:
A warp-free laminate is produced by winding a first set of strands or filaments about a flat mandrel with a second set of strands 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 for subsequent printed circuit applications.

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