专利名称：Polyvinyl alcohol polymer film, method of
producing the same and polarization film
发明人：Shigeyuki Harita,Takanori Isozaki申请号：US09845271申请日：20010501
公开号：US20010039319A1公开日：20011108
摘要：Difference in retardation between two points separated by 1 cm along the TDdirection of a polyvinyl alcohol polymer film 6 is 5 nm or less. The length of a surface fordrying a polyvinyl alcohol polymer film 6 is 3 m to 200 m, and the water content of thepolyvinyl alcohol polymer film 6 when peeled after passing through the drying surface is50% by weight or less, in film formation.
申请人：KURARAY CO., LTD.
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