| 摘要 |
A drum cleaning device (65) has a nozzle (66). The drum cleaning device (65) is disposed in the upstream from a peel roller (34). A dope (21) is cast onto a surface of the casting drum(32) by using a casting die (30). The casting drum(32) is rotated to form a casting film(33) on the surface. The casting film(33) is cooled by the casting drum(32). Deposits containing fatty acid ester as a main component are precipitated from the casting film(33) onto the surface. The peel roller (34) peels off the casting film(33) as a wet film(38). The drum cleaning device (65) blasts gas mixture containing air and dry ice particles from the nozzle (66) onto the surface.
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