Title:
POLYESTER MULTILAYER-FILM AND METHOD FOR PREPARING SAME
Document Type and Number:
WIPO Patent Application WO/2021/066418
Kind Code:
A1
Abstract:
The present invention relates to a biaxially drawn polyester multilayer-film and a method for preparing same, the biaxially drawn polyester multilayer-film having the draw speed and ratio of MD and TD appropriately controlled during biaxial drawing to minimize the deviation of phase difference and low orientation angle and radically inhibit mura, and also exhibiting excellent optical properties, optical functionality and aesthetic appearance, minimized thickness deviation, enhanced productivity and a traveling property appropriate for high-speed processing.
Inventors:
CHO HYUNKUG (KR)
KIM SULKYUNG (KR)
PARK HANSOO (KR)
KIM SULKYUNG (KR)
PARK HANSOO (KR)
Application Number:
PCT/KR2020/013113
Publication Date:
April 08, 2021
Filing Date:
September 25, 2020
Export Citation:
Assignee:
KOLON INC (KR)
International Classes:
B32B27/36; B29C48/08; B29C48/18; B29C55/14; B32B7/03; B32B27/08; B32B27/18; B32B37/15
Foreign References:
| JP2010046816A | 2010-03-04 | |||
| KR20180077585A | 2018-07-09 | |||
| JP2012166555A | 2012-09-06 | |||
| JP2017102442A | 2017-06-08 | |||
| KR20140053000A | 2014-05-07 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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