CASTING BELT FOR PRODUCING TRANSCENDENTAL WIDE WIDTH FILM
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United States of America Patent
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app pub date -
Nov 16, 2010
filing date -
Dec 14, 2009
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Abstract
The present invention relates to a casting belt used for manufacturing an optical film by means of a solvent casting process, in more detail, a casting belt for producing a transcendental wide width film which is used to produce a film in a gel state by casting a dope when manufacturing a film that is used for a polarizer of liquid crystal displays or optical compensation films.
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