| 摘要 |
In the production process of a cellulose ester film, fine particles are added in the step of dissolving a cellulose ester resin in a main solvent at a temperature at or below the boiling point of the main solvent under the atmospheric pressure, and, after the addition, mixing is carried out at a temperature at or above the boiling point of the main solvent. Preferably, the mixing is carried out in a temperature range of the boiling temperature of the main solvent to a temperature of (boiling point of the main solvent+50° C.) for not less than 60 min and not more than 300 min.
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