Title:
溶液製膜方法
Document Type and Number:
Japanese Patent JP4173395
Kind Code:
B2
Abstract:
A cope containing TAC is cast from a casting die onto a belt such that a film after the drying may have a thickness at 40 mum. A solvent of the dope solution on the belt evaporates, and thus a gel-like film may be formed. The peeling force of the gel-like film becomes to the maximum when the weight percentage of the remaining solvent in the gel-like film is 25 wt. %. In order to reduce the generation of mura or unevenness of the thickness, the gel-like film is peeled from a belt with a support of a peeling roller, when the weight percentage of the remaining solvent is at most 20 wt. %. The peeled gel-like film is dried in a tenter dryer and a casting chamber to be a film. After cooled in a cooling chamber, the film is wound by a winding device.
Inventors:
Kazuhide Kanamura
Application Number:
JP2003087841A
Publication Date:
October 29, 2008
Filing Date:
March 27, 2003
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
B29C41/24; B29C41/28; G02B5/30; B29C41/52; B29D7/01; G02F1/1335; B29K1/00; B29L7/00
Domestic Patent References:
| JP2002254451A | ||||
| JP2002187146A | ||||
| JP2001198933A |
Attorney, Agent or Firm:
Kazunori Kobayashi
Shigeru Iijima
Kobayashi Hideyoshi
Shigeru Iijima
Kobayashi Hideyoshi