METHOD FOR PRODUCING CELLULOSE ACYLATE FILM AND CELLULOSE ACYLATE PELLET

摘要

A cellulose acylate film formed by melt-casting or the like, which contains fine polarizing foreign particles in an amount of 0 to 10 pieces/mm2 and black polarizing foreign particles in an amount of 0 to 100 pieces/mm2, and exhibits a transmittance at 450 nm (T450) of 90 to 100 %. The above cellulose acylate film formed through melt-casting can achieve the cancellation of display troubles being conventionally caused when a cellulose acylate film formed through melt- casting is integrated into a liquid crystalline display device and used for displaying a black image. ® KIPO & WIPO 2007