Title:
BIAXIALLY-ORIENTED POLYPROPYLENE FILM
Document Type and Number:
WIPO Patent Application WO/2023/127534
Kind Code:
A1
Abstract:
[Problem] To provide a biaxially-oriented polypropylene film that has excellent adhesion during vapor-deposition, coating, and laminating with other films without compromising the excellent transparency and mechanical properties inherent to the biaxially-oriented polypropylene film, and that is suitable as a processed raw fabric having fine slide properties and blocking resistance. [Solution] This biaxially-oriented polypropylene film has a base material layer (A) containing a polypropylene-based resin as a main component, satisfies the following (1)-(4), and has a surface layer (B) containing a polypropylene-based resin as a main component. (1) The number of projections having a height of 500 nm or more within a surface area of 2000 μm2 is 50-200. (2) The wet tension of the surface is 38 mN/m or more. (3) The Martens hardness of the surface is 350 N/mm2 or less. (4) The arithmetic mean roughness (Ra) of the surface is 1.5-3.0 nm.
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Inventors:
KANAYA ATSUSHI (JP)
IMAI TORU (JP)
IMAI TORU (JP)
Application Number:
PCT/JP2022/046274
Publication Date:
July 06, 2023
Filing Date:
December 15, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/32
Domestic Patent References:
| WO2017221781A1 | 2017-12-28 | |||
| WO2017169952A1 | 2017-10-05 | |||
| WO2012002123A1 | 2012-01-05 | |||
| WO2019044758A1 | 2019-03-07 | |||
| WO2018142983A1 | 2018-08-09 | |||
| WO2007094072A1 | 2007-08-23 | |||
| WO2018142983A1 | 2018-08-09 |
Foreign References:
| JP2002154187A | 2002-05-28 | |||
| JP2015178594A | 2015-10-08 | |||
| EP2181843A1 | 2010-05-05 | |||
| US20210229408A1 | 2021-07-29 | |||
| US6410132B1 | 2002-06-25 |
Other References:
A. ZAMBELLI ET AL., MACROMOLECULES, vol. 6, 1973, pages 925
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