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US 2002/0001700 A1Published application
Polyvinyl alcohol film and polarization film
AssigneeKuraray Co., Ltd.
InventorsToru Sanefuji, Satoru Fujita, Tsutomu Kawai
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Abstract
A polyvinyl alcohol film obtained by casting on drum, in which the variance in thickness along the TD direction of the film is 0.5 μm/mm or less, the thickness of the film is within the range of 20 to 150 μm, and the width of the film is at least 2 m.
Claims5
A polyvinyl alcohol film wherein the film is obtained by casting on drum, and the variance in thickness along the TD direction of the film is 0.5 μm/mm or less, the thickness of the film is within the range of 20 to 150 μm, and the width of the film is at least 2 m.
Dependencies are inferred from the claim text.