Both sides laminated film , both sides polarizing laminated film , double-sided lamination films and single-sided lamination film

摘要

PROBLEM TO BE SOLVED: To suppress curl of a film which occurs during a stretching step, a drying step after dyeing, preserving a stretched film or the like in manufacturing steps of a polarizing plate which is thin and has high polarization performance.;SOLUTION: A method for manufacturing a double-sided polarizing laminated film having a base film and polarizing layers formed on both surfaces of the base film, includes in this order, a resin layer forming step for forming polyvinyl alcohol resin layers on both surfaces of the base film to obtain a double-sided laminated film, a stretching step for stretching the double-sided laminated film, and a dyeing step for dyeing the polyvinyl alcohol resin layers on the both surfaces of the stretched double-sided laminated film with a dichroic dye and performing crosslinking treatment to form the polarizing layers.;COPYRIGHT: (C)2013,JPO&INPIT