Title:
セルロースエステルフィルムの製造方法
Document Type and Number:
Japanese Patent JP5071520
Kind Code:
B2
Abstract:
A manufacturing method of a cellulose ester film satisfying the relationships, Nx>Ny>Nz, and 0.8≰Rt/R0≰3.5, the method comprising casting a cellulose ester dope containing a solvent of a good solvent and a poor solvent on a support to form a web; peeling the web from the support; transporting the peeled web (step D0); holding the edges in the transverse direction of the web (step A); stretching the resulting web in the transverse direction while applying a tension; reducing the tension in the transverse direction of the web; and drying the stretched web, wherein the residual solvent content of the web is 5 to 90% by weight at the beginning in the step A, and the residual poor solvent content in the residual solvent content of the web is from 15 to 95% by weight at the terminal point in the Step D0.
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Inventors:
Koji Tasaka
Takatoshi Yajima
Hiroki Umeda
Noriyasu Kuzuhara
Takatoshi Yajima
Hiroki Umeda
Noriyasu Kuzuhara
Application Number:
JP2010118114A
Publication Date:
November 14, 2012
Filing Date:
May 24, 2010
Export Citation:
Assignee:
Konica Minolta Holdings Co., Ltd.
International Classes:
B29C41/24; B29C55/08; B29D7/01; G02B5/30; C08J5/18; B29K1/00; B29L7/00; B29L11/00
Domestic Patent References:
| JP2001072799A | ||||
| JP8062422A | ||||
| JP2001122980A | ||||
| JP11090942A | ||||
| JP62183328A | ||||
| JP4001009A | ||||
| JP9230141A | ||||
| JP11019954A | ||||
| JP2001114914A | ||||
| JP2001100036A |
Attorney, Agent or Firm:
Koichi Washida
Takashi Kiso
Kazuto Iinuma
Takashi Kiso
Kazuto Iinuma