Title:
溶液製膜方法
Document Type and Number:
Japanese Patent JP4088128
Kind Code:
B2
Abstract:
Cellulose triacetate film is produced by a solution casting process. Dope, which includes cellulose triacetate and mixed solvent with methyl acetate, is cast on a rotary drum in a form of bead by use of a flow casting die, to form gel film. When a self-supporting characteristic of the gel film becomes higher than one limit value, the gel film is stripped from the rotary drum by use of a stripping roller, to obtain the cellulose triacetate film. During the casting step, a surface of the rotary drum is cooled at -10° C. or lower.
Inventors:
Arai Toshinao
Yamazaki alphanumeric
Masashi Ikeda
Yamazaki alphanumeric
Masashi Ikeda
Application Number:
JP2002264312A
Publication Date:
May 21, 2008
Filing Date:
September 10, 2002
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
B29C41/26; B29C41/34; B29C41/46; B29C41/50; B29D7/01; B29K1/00; B29L7/00
Domestic Patent References:
| JP11221833A | ||||
| JP2111511A | ||||
| JP8025459A | ||||
| JP10323853A | ||||
| JP2002079533A |
Attorney, Agent or Firm:
Kazunori Kobayashi
Shigeru Iijima
Kobayashi Hideyoshi
Shigeru Iijima
Kobayashi Hideyoshi