Title:
POLYPROPYLENE FILM, LAMINATE, PACKAGING MATERIAL, AND PACKING BODY
Document Type and Number:
WIPO Patent Application WO/2022/138531
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a polypropylene film which is structurally stable to heat in deposition when used for packaging, and has appropriate slipperiness without using an antiblocking agent or particles, and thus has excellent water vapor barrier properties and oxygen barrier properties, in particular, when a transparent deposited layer is laminated. Moreover, the present invention provides a polypropylene film characterized by having at least two types of layers (A layer and B layer) containing a polypropylene-based resin as a main component, wherein the B layer contains a thermoplastic resin incompatible with a polypropylene-based resin, and when the skewnesses Ssk of the A layer and the B layer, as measured through three-dimensional non-contact surface shape measurement, are Ssk (A) and Ssk (B), respectively, the Ssk (B) is at least 5 and the Ssk (A) is less than 5.
Inventors:
IMANISHI YASUYUKI (JP)
OHKURA MASATOSHI (JP)
AONO HARUKI (JP)
OHKURA MASATOSHI (JP)
AONO HARUKI (JP)
Application Number:
PCT/JP2021/046933
Publication Date:
June 30, 2022
Filing Date:
December 20, 2021
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B27/32; B32B9/00; B65D65/02; C08J5/18
Domestic Patent References:
| WO2018181011A1 | 2018-10-04 | |||
| WO2018147334A1 | 2018-08-16 |
Foreign References:
| JP2010042665A | 2010-02-25 | |||
| JP2005205786A | 2005-08-04 | |||
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| JP2016182774A | 2016-10-20 | |||
| JP2020036007A | 2020-03-05 | |||
| JP2016068417A | 2016-05-09 | |||
| JP2014055283A | 2014-03-27 | |||
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| JP2020040361A | 2020-03-19 |
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