METHOD FOR TREATING FILM SURFACE, METHOD FOR PRODUCING POLARIZING PLATE, AND SURFACE TREATMENT APPARATUS

摘要

The present invention aims to secure adhesion of a triacetate cellulose film to a polyvinyl alcohol film without performing a saponification treatment. Specifically, before bonding a second film (12) mainly containing a triacetate cellulose to a first film (11) composed of a polyvinyl alcohol resin, a reaction gas is changed into a plasma and then brought into contact with the bonding surfaces of the second film (12) and the first film (11). The reaction gas contains an acrylic acid or a methacrylic acid.