POLYVINYL ALCOHOL RESIN STRETCHABLE FILM

摘要

PURPOSE:To obtain polyvinyl alcohol resin stretchable film with outstanding optical properties, heat resistance and humidity resistance. CONSTITUTION:The subject polyvinyl alcohol resin stretched film is prepared by soaking polyvinyl alcohol resin film obtained from an aqueous solution of polyvinyl alcohol resin containing a boron compound in an aqueous acid solution an stretching the film.