Title:
【発明の名称】セルロ―ストリアセテ―トフィルムの製造方法
Document Type and Number:
Japanese Patent JP2520774
Kind Code:
B2
Abstract:
A process for producing cellulose triacetate films that is capable of not only suppressing the growth of foreign matter on transport rollers, but also markedly reducing the necessary number of cleaning operations. The process includes steps of casting a solution of cellulose triacetate onto a support having it surface cooled at 20 DEG C. or below, drying and cooling the solution cast onto the support to solidify the cast solution, separating the subsequently solidified film from the support, and transporting the film while it dries on transport rollers. In accordance with the invention, for a weight proportion of the solvents in the film as separated from the support of at least 40 wt %, the surface of the transport rollers is made of a material having a surface energy of no more than 80 dynes/cm at 20 DEG C.
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Inventors:
SUZUKI JUJI
YAMAZAKI TAKESHI
YAMAZAKI TAKESHI
Application Number:
JP19908690A
Publication Date:
July 31, 1996
Filing Date:
July 30, 1990
Export Citation:
Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
B29C41/12; B29C41/24; B29C41/34; B29D7/01; C08J5/18; B29K1/00; B29L7/00; (IPC1-7): B29C41/12; B29C41/34
Domestic Patent References:
| JP61257231A |
Attorney, Agent or Firm:
Toshio Fukasawa (3 others)