Title:
積層ポリエステルフィルム
Document Type and Number:
Japanese Patent JP6673412
Kind Code:
B2
Abstract:
To provide a laminate polyester film for optical use, which can suppress increase in a film haze even after the film is subjected to a process under severe conditions such as a long-term heat treatment under the condition of 150°C, a sputtering process in a high tension state, or an endurance test in a high temperature and high humidity environment, and which shows excellent optical characteristic and visibility even after the film is processed into a product for an optical member.SOLUTION: The laminate polyester film has a coating layer on one surface layer of a laminate polyester film having at least three layers and having a thickness of 4 μm or more in both surface layers, and has a total film thickness of 45 to 200 μm. An amount of ester cyclic trimer extracted from the polyester film surface is 3.0 mg/mor less.SELECTED DRAWING: None
Inventors:
Kazuya Chikuma
Application Number:
JP2018149322A
Publication Date:
March 25, 2020
Filing Date:
August 08, 2018
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
C08J7/04; B05D7/04; B05D7/24; B32B27/30; B32B27/36
Domestic Patent References:
| JP2003191413A | ||||
| JP2008030370A | ||||
| JP2011011418A | ||||
| JP2000108285A | ||||
| JP2011110881A |
Attorney, Agent or Firm:
Wataru Sasaki