PROCESS FOR PROMOTING CHEMICAL ADHESION OF LEGEND INKS USING ULTRA-VIOLET LIGHT

摘要

The present invention relates to an improved method for affixing inks to thermoplastics suchas the laminates used in printed circuit boards wherein the laminate is briefly exposed to an intenseultraviolet source. Legend inks that would normally fail to bond to the surface of such laminateswithout UV pretreatment instead exhibit outstanding bonding strength following such UV treatment.