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METHOD FOR MANUFACTURING POLARIZING FILM, POLY(VINYL ALCOHOL)-BASED RESIN FOR POLARIZING FILM, POLY(VINYL ALCOHOL)-BASED RESIN SOLUTION FOR POLARIZING FILM, POLARIZING FILM, AND POLARIZING PLATE
METHOD FOR MANUFACTURING POLARIZING FILM, POLY(VINYL ALCOHOL)-BASED RESIN FOR POLARIZING FILM, POLY(VINYL ALCOHOL)-BASED RESIN SOLUTION FOR POLARIZING FILM, POLARIZING FILM, AND POLARIZING PLATE
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机译:制备偏振膜,基于聚乙烯醇的偏振膜的方法,用于偏振膜,偏振膜和偏振板的偏振膜的解决方案
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摘要
Provided is a method for manufacturing a polarizing film, and a poly(vinyl alcohol)-based resin for the polarizing film that allow the dyeing time to be reduced and the productivity of a polarizing film having minimal dyeing nonuniformities to be markedly reduced. This method for manufacturing a polarizing film comprises: a step for preparing a poly(vinyl alcohol)-based resin film formed by using a poly(vinyl alcohol)-based resin having a degree of saponification of 94-98.5 mol% and a degree of polymerization of 2500-3000, as calculated according to JIS K 6726; and a step for obtaining a polarizing film by using the poly(vinyl alcohol)-based resin film. This poly(vinyl alcohol)-based resin for the polarizing film has a degree of saponification of 94-98.5 mol% and a degree of polymerization of 2500-3000, as measured according to JIS K 6726.
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机译:本发明提供一种偏光膜的制造方法以及该偏光膜的聚乙烯醇系树脂,其可以缩短染色时间,并且可以显着降低染色不均最小的偏光膜的生产率。该偏光膜的制造方法包括:准备通过使用皂化度为94〜98.5mol%,且皂化度为94〜98.5mol%的聚乙烯醇系树脂形成的聚乙烯醇系树脂膜的工序。聚合度为2500-3000,根据JIS K 6726计算;使用聚(乙烯醇)类树脂膜得到偏振膜的步骤。该偏光膜用聚乙烯醇系树脂的皂化度为94〜98.5摩尔%,聚合度为2500〜3000,根据JIS K 6726进行了测定。
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