Title:
RELEASE FILM AND PROTECTIVE FILM
Document Type and Number:
WIPO Patent Application WO/2018/110361
Kind Code:
A1
Abstract:
Provided are a release film having excellent heat resistance, appearance, mechanical characteristics, followability, stain resistance and release properties; and a protective film having a release layer that exhibits the aforementioned characteristics. The release film has at least one release layer, and the release layer is characterized by comprising components (A) and (B).
(A) 60 wt% or more of at least one type of polyolefin selected from among polyethylene, polypropylene and polybutene.
(B) 0.1-40 wt% of an ultrahigh molecular weight polyethylene having an intrinsic viscosity [η] of 8 dl/g or more.
Furthermore, the protective film has an adhesive layer on the outermost layer that faces the release layer.
Inventors:
TASAKI TATSUYUKI (JP)
WATANABE KOTA (JP)
INOUE NORIHIDE (JP)
MACHIDA TETSUYA (JP)
NAKAMICHI NATSUKI (JP)
BABA YUSUKE (JP)
WATANABE KOTA (JP)
INOUE NORIHIDE (JP)
MACHIDA TETSUYA (JP)
NAKAMICHI NATSUKI (JP)
BABA YUSUKE (JP)
Application Number:
PCT/JP2017/043569
Publication Date:
June 21, 2018
Filing Date:
December 05, 2017
Export Citation:
Assignee:
TORAY ADVANCED FILM CO LTD (JP)
International Classes:
B32B27/18; B32B27/32; C09J7/20; C09J109/06; C09J123/00; C09J125/08; C09J153/02
Domestic Patent References:
| WO2009157143A1 | 2009-12-30 |
Foreign References:
| JP2015048384A | 2015-03-16 | |||
| JPH01129047A | 1989-05-22 | |||
| JPS63241050A | 1988-10-06 | |||
| JPH05269939A | 1993-10-19 | |||
| JP2016150483A | 2016-08-22 | |||
| JP2016175322A | 2016-10-06 |
Attorney, Agent or Firm:
ICHIJO, Chikara (JP)
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