METHOD OF PRODUCING ROLL OF LAMINATE STRIP WITH POLARIZING FILM

摘要

PURPOSE: A manufacturing method of a laminate strip roll having a polarization film is provided to use a thermoplastic resin substrate, thereby effectively extending a laminate including a polyvinyl acetate system resin layer. CONSTITUTION: A film removal process(20) of a PVA layer, an aerial assistant extension process(30) and a boric acid submerged extension process(50) are performed in a thermoplastic resin substrate(1) with amorphous PET. An optical film laminate(10) in which a polarization film(3) is formed is obtained. The optical film laminate connects other optical functional film(4) on the polarization film.