Title:
ポリエステル多層フィルムの製造方法
Document Type and Number:
Japanese Patent JP7336592
Kind Code:
B2
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, Hyun Guk
Kim, Seol Kyung
Park, Hans
Kim, Seol Kyung
Park, Hans
Application Number:
JP2022519485A
Publication Date:
August 31, 2023
Filing Date:
September 25, 2020
Export Citation:
Assignee:
Kolon Industries Inc.
International Classes:
B32B7/023; B29C48/08; B29C48/21; B29C48/88; B29C55/12; B29C55/14; B32B27/36; G02B5/30
Domestic Patent References:
| JP2010046816A | ||||
| JP2012166555A | ||||
| JP2017102442A | ||||
| JP6007792B2 | ||||
| JP2013139151A |
Foreign References:
| KR1020180077585A |
Attorney, Agent or Firm:
Takuji Yamashita