METHOD FOR MANUFACTURING PHASE DIFFERENCE FILM

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an acrylic phase difference film which is excellent in terms of exhibition of desired phase difference values, transparency and heat resistance and has a good phase difference stability under a severe usage environment.

SOLUTION: In a method for manufacturing a phase difference film, an original fabric film including an acrylic resin as a main component is drawn and is subject to a treatment in which it is exposed under the condition with a humidity in a rage of 70%RH or more and 100%RH or less and at a temperature in a rage of 40°C or more and the glass transition temperature of the acrylic resin or less.

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