Optical film, method for producing the same and po

专利名称：Optical film, method for producing the same

and polarizing plate using the same

发明人：Kenichi Kazama申请号：US11385775申请日：20060322

公开号：US20060214319A1公开日：20060928

专利附图：

摘要：A method for producing an optical film comprising the steps of: (i) melt castinga cellulose ester resin or a cycloolefin resin by extruding melt of the cellulose ester resinor the cycloolefin resin from a die onto a roll-shaped cooling drum; (ii) cooling and

solidifying the extruded melt to form a film; (iii) stretching the film in a lateral direction ofthe film; and (iv) winding the film in a roll, wherein the cooling drum has plural regionsdivided predeterminedly in an axis direction of the cooling drum, a temperature of eachregion being independently controlled.

申请人：Kenichi Kazama

地址：Kobe-shi JP

国籍：JP

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