Title:
MULTILAYER POLYIMIDE FILM AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/090813
Kind Code:
A1
Abstract:
The present invention provides a multilayer polyimide film and a manufacturing method therefor, wherein the multilayer polyimide film comprises a first skin layer and a second skin layer respectively formed on one outer surface of a core layer and an opposite surface of the outer surface, has a thermal expansion coefficient that is between 2.0 ppm/℃ and 6.0 ppm/℃, and has a hygroscopic expansion coefficient that is between 3.0 ppm/RH% and 6.0 ppm/RH%.
Inventors:
YOO DAE-GEON (KR)
KIM DONG-YOUNG (KR)
WON DONG-YOUNG (KR)
KIM DONG-YOUNG (KR)
WON DONG-YOUNG (KR)
Application Number:
PCT/KR2022/017984
Publication Date:
May 25, 2023
Filing Date:
November 15, 2022
Export Citation:
Assignee:
PI ADVANCED MAT CO LTD (KR)
International Classes:
B32B27/28; B29C48/18; B32B15/08; B32B15/20; B32B37/15; C08G73/10; C08J5/18; C08J7/04; C09D179/08
Foreign References:
| KR20200120492A | 2020-10-21 | |||
| JP2019073659A | 2019-05-16 | |||
| KR20210033364A | 2021-03-26 | |||
| KR20120123389A | 2012-11-08 | |||
| KR20200060045A | 2020-05-29 |
Attorney, Agent or Firm:
HANYANG PATENT FIRM (KR)
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