Patent ID: 6582645
Filing Date: 2003-06-24
Classification: B29C,B29D,B29K

Abstract:
A method for producing a cellulose acylate film comprising the steps of:casting a dope containing cellulose acylate and solvent on a surface of a metal support to form a web; peeling the web from the metal support, wherein the peeled web has a remaining solvent content from 70 to 120%, and the metal support has a surface temperature at time of peeling Tb; contacting a surface of the peeled web with a first roller wherein the first roller has a surface temperature Tr, which is controlled so that the relation of Tr and Tb is (Trâˆ’Tb)&lE;50Â° C., and the first roller has a surface roughness Rmax not more than 1.0 &mgr;m; and drying the peeled web.