PRODUCTION OF EPOXY RESIN LAMINATE

摘要

PURPOSE:To enhance the reliability of insulation at a through hole of the title laminate. CONSTITUTION:An epoxy resin is compounded with a vinylorganopolysiloxane to give an epoxy resin varnish, which is impregnated into a substrate and dried to give a prepreg. Required pieces of the prepregs are laid one on top of another; then a metal foil is placed on the prepregs if necessary; and they are formed into the laminate. The vinylorganopolysiloxane imparts flexibility to the resin, overcoming the problem of brittleness, preventing the occurrence of minute cracks on the inside surface of a through hole in the hole making step, and preventing the permeation of a plating soln. into the laminate.