PRODUCTION OF POYVINYLIDENE FLUORIDE FILM FOR PIEZOELECTRICITY

摘要

PURPOSE:To produce the polyvinylidene fluoride film for piezoelectricity. CONSTITUTION:The front and rear surfaces of the uniaxially stretched polyvinylidene fluoride film are subjected to a corona discharge treatment in such a manner that the wetting tension thereof attains >=39dyne/cm. The static electricity on the front and rear surfaces of this film is removed right after this corona discharge treatment and electrode metals are deposited by evaporation on the front and rear surfaces of the resulted film. As a result, the problem of boring of the film arising from the discharge is eliminated and the metallic electrodes can securely be deposited by evaporation on the surfaces thereof.