ADHESIVE STRIP THAT CAN BE ACTIVATED BY HEAT AND IS BASED ON NITRILE RUBBER AND POLYVINYL BUTYRAL FOR STICKING TOGETHER ELECTRONIC COMPONENTS AND STRIP CONDUCTORS

摘要

Heat-activable adhesive tape for producing and reprocessing flexible circuit boards has an adhesive composition containing (in wt.%), at least, (a) 40-80% acrylonitrile-butadiene copolymer, (b) 2-30% polyvinyl acetal, (c) 10-50% and (d) a hardener causing chemical crosslinking of the epoxide groups at high temperature.