| 摘要 |
PROBLEM TO BE SOLVED: To provide a solution film forming method by which a high-quality cellulose triacetate film and the like can be manufactured stably and with high productivity. SOLUTION: This film manufacturing method comprises the steps to cast a dope to a casting support from a casting die, then dry the cast dope to some degree, and further, dry the film after releasing the film from the casting support to obtain the film. In this method, the mass fraction of a solid matter in the dope is set to be 17 to 30 mass%, and the average drying rate from the casting of the dope to the release of the film is set to be 300 to 1,000 mass%/minute. |
