| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming a cellulose acylate film excellent in surface properties and reduced in the residual amount of a solvent. SOLUTION: A cellulose acylate solution, which has a boiling point higher than the glass transition temperature (Tg) of the cellulose acylate film, is used to form a web with a residual volatile component of 8 mass% or below. This web is dried by a drying wind with a wind velocity of 10 m/min or above while fed and cooled immediately after dried to be taken up as the cellulose acylate film. COPYRIGHT: (C)2006,JPO&NCIPI |
