Patent ID: 6368698
Filing Date: 2002-04-09
Classification: B32B,C08J,D21F,D21H,H05K,Y10S,Y10T

Abstract:
A printed circuit board comprising:a plurality of substantially electrically non-conductive substrate layers; at least one of said layers comprising, prior to pre-preg, a non-woven layer including fibers, at least 50% by weight of said fibers comprising acrylic fibers, and at least 10% by weight of a material comprising one or more of liquid crystalline polymers, aramid fibers, aramid pulp fibers, fiberglass, micro fiberglass, polyester fibers, aramid fibrids, polyethylene naphthalate fibers, polyphenylene sulfide fibers, melamine fibers, and phenolic fibers; and electrically conductive circuit elements provided on or between at least one of said substrate layers.