| 摘要 |
A method for producing a cellulose acylate film comprising preliminarily drawing a cellulose acylate film at a temperature in the range of (Tg-20)° C. to (Tg+50)° C.; and heating the film at a temperature not less than (-285xS+1000)° C. and less than a melting point of the film for 0.01 minutes to less than 60 minutes wherein Tg represents a glass transition temperature of the film and S represents a total substitution degree of cellulose acylate.
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