PROTECTIVE FILM FOR POLARIZER

摘要

PROBLEM TO BE SOLVED: To stably laminate a protective film having low water permeability on a polarizer film. SOLUTION: The protective film for a polarizer is a polymer film to be used as a protective film for a polarizer by laminating one or both surfaces of a polarizer film. The polymer film shows <=500 g/(m<2> .24 hours) moisture permeability at 70 deg.C and 90%RH and has a layer containing cellulose esters as the main structural component on at least the surface of the polymer film opposing to the polarizer film.