Title:
溶液製膜方法
Document Type and Number:
Japanese Patent JP4280486
Kind Code:
B2
Abstract:
A solution casting process for producing cellulose triacetate (TAC) film is provided. Bead of dope, which includes cellulose triacetate and solvent, is cast on to a rotating supporting drum, to form self-supporting cast film. The self-supporting cast film is stripped from the supporting drum. The self-supporting cast film is dried while the self-supporting cast film being stripped is fed by feed rollers, to form the cellulose triacetate film. A surface temperature of the feed rollers is set equal to or lower than 0° C. The self-supporting cast film upon being stripped has modulus of longitudinal elasticity equal to or more than 450,000 Pa.
Inventors:
Arai Toshinao
Yamazaki alphanumeric
Masashi Ikeda
Yamazaki alphanumeric
Masashi Ikeda
Application Number:
JP2002340808A
Publication Date:
June 17, 2009
Filing Date:
November 25, 2002
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
B29C41/24; B29C35/16; B29C41/26; B29C41/32; B29C41/46; B29C41/52; B29D7/01; B29K1/00; B29L7/00
Domestic Patent References:
| JP2002254451A | ||||
| JP8025459A | ||||
| JP11123731A | ||||
| JP10058514A | ||||
| JP4298310A | ||||
| JP2002036266A |
Attorney, Agent or Firm:
Kazunori Kobayashi
Shigeru Iijima
Kobayashi Hideyoshi
Shigeru Iijima
Kobayashi Hideyoshi