Title:
POLYOLEFIN RESIN FILM
Document Type and Number:
WIPO Patent Application WO/2021/200592
Kind Code:
A1
Abstract:
Provided is a polyolefin resin film such that, when laminated with a substrate film having large distortion of the molecular orientation axis, such as a biaxially stretched polyamide resin film, a packaging pouch obtained from said laminate has excellent straight-line cuttability, tearing properties and pouch-making properties, and does not tend to break when dropped even after retorting. A polyolefin resin film comprising a polypropylene resin composition, wherein: 100 parts by weight of the polypropylene resin composition contains 40-97 parts by weight of a propylene-ethylene block copolymer, 0-50 parts by weight of a propylene-α olefin random copolymer or a propylene homopolymer, and 3-10 parts by weight of at least one elastomer selected from the group consisting of ethylene-propylene copolymer elastomers, propylene-butene copolymer elastomers and ethylene-butene copolymer elastomers; the heat shrinkage in the length direction is 1-9%; and the x-axis orientation factor ΔNx calculated from the refractive index is 0.0150-0.0250.
Inventors:
TOMATSU WAKATO (JP)
NISHI TADASHI (JP)
NISHI TADASHI (JP)
Application Number:
PCT/JP2021/012697
Publication Date:
October 07, 2021
Filing Date:
March 25, 2021
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08J5/18; B32B27/32; B65D65/40; B29C55/04; B29K23/00
Domestic Patent References:
| WO2020022060A1 | 2020-01-30 | |||
| WO2017098953A1 | 2017-06-15 | |||
| WO2019123944A1 | 2019-06-27 | |||
| WO2019123944A1 | 2019-06-27 |
Foreign References:
| JP2012500307A | 2012-01-05 | |||
| JP2015527943A | 2015-09-24 | |||
| JP2014141302A | 2014-08-07 | |||
| JP5790497B2 | 2015-10-07 | |||
| JP2014141302A | 2014-08-07 | |||
| JP2012500307A | 2012-01-05 | |||
| JP2000186159A | 2000-07-04 |
Other References:
See also references of EP 4130111A4
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