Title:
光学フィルムの製造方法
Document Type and Number:
Japanese Patent JP6783542
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of an optical film having enhanced manufacturing efficiency by suppressing breakage after drawing process.SOLUTION: Provided is an optical film manufacturing method in which, in drawing process of the optical film consisting of a resin composition containing a rubber-containing copolymer and an amorphous thermoplastic resin, the drawing process includes drawing in a transportation direction and drawing in a direction orthogonal to the transportation direction, and the temperature Te [°C] of the outermost end part of the optical film and the temperature Tc [°C] of the center part of the optical film during drawing in the transportation direction satisfy, respectively, a relationship represented by the formulae (1) and (2). Te>Tg+25 (1). Tg-10≤Tc≤Tg+25 (2). Tg=the glass transition temperature of the resin composition.SELECTED DRAWING: None
Inventors:
Auria Aurelous
Application Number:
JP2016071430A
Publication Date:
November 11, 2020
Filing Date:
March 31, 2016
Export Citation:
Assignee:
Kaneka Corporation
International Classes:
B29C55/12; C08J5/18
Domestic Patent References:
| JP2012052023A | ||||
| JP2012150462A | ||||
| JP2010208078A | ||||
| JP2008074918A |
Foreign References:
| WO2009119328A1 |
Attorney, Agent or Firm:
Patent business corporation Yuko patent office