Title:
ポリオレフィン系樹脂フィルム、及びそれを用いた積層体
Document Type and Number:
Japanese Patent JP7392718
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a polyolefin-based resin film being to be laminated on a base film having a large distortion of a molecular orientation axis such as a biaxially oriented polyamide-based resin film to afford a laminate, from which a packaging bag is obtained which is superior in transparency, sealability, bag-forming property, and bag breaking resistance and is easily torn without parting. The polyolefin-based resin film includes a polyolefin-based resin composition, wherein the polyolefin-based resin composition comprises a propylene-a olefin random copolymer, an ethylene-butene copolymeric elastomer, and a propylene-butene copolymeric elastomer, and the following 1) to 3) are satisfied: 1) the polyolefin-based resin composition contains 2 to 9 parts by weight of the ethylene-butene copolymeric elastomer and 2 to 9 parts by weight of the propylene-butene copolymeric elastomer based on 100 parts by weight of the propylene-a olefin random copolymer; 2) the polyolefin-based resin film exhibits a thermal shrinkage rate after heating at 120°C for 30 minutes of 25% or less in a direction in which the thermal shrinkage rate after heating at 120°C for 30 minutes is larger between a longitudinal direction and a lateral direction of the polyolefin-based resin film; and 3) a planar orientation coefficient ΔP calculated from a refractive index of the polyolefin-based resin film is 0.0100 or more and 0.0145 or less.
Inventors:
Tomatsu Wakato
Tadatsugu Nishi
Tadatsugu Nishi
Application Number:
JP2021527503A
Publication Date:
December 06, 2023
Filing Date:
May 26, 2020
Export Citation:
Assignee:
Toyobo Co., Ltd.
International Classes:
B29C61/06; B32B27/32; B32B27/34; B32B27/36; B65D65/40; C08L23/08; C08L23/14
Domestic Patent References:
| JP56011249A |
Foreign References:
| WO2019065306A1 | ||||
| WO2017170244A1 | ||||
| WO2019244708A1 |