Title:
BIAXIALLY-ORIENTED POLYPROPYLENE FILM
Document Type and Number:
WIPO Patent Application WO/2020/137794
Kind Code:
A1
Abstract:
Provided is a biaxially-oriented polypropylene film that has high rigidity, excellent heat-resistance at a temperature as high as 150°C, easily maintains a bag shape when used as a packaging bag, undergoes minimal dimensional change during printing, and has few wrinkles in a sealing part when heat sealed. The biaxially-oriented polypropylene film has a full width at half maximum of a peak derived from crystals oriented in the width direction for azimuth dependence of the polypropylene α-type crystal (110) surface of 27°, as obtained by wide-angle X-ray diffraction measurement , and heat shrinkage at 150°C of not more than 10% in the longitudinal direction and not more than 30% in the width direction.
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Inventors:
YAMADA KOUJI (JP)
HORINOUCHI KAZUHITO (JP)
NAKONO MAHIRO (JP)
IMAI TORU (JP)
HORINOUCHI KAZUHITO (JP)
NAKONO MAHIRO (JP)
IMAI TORU (JP)
Application Number:
PCT/JP2019/049811
Publication Date:
July 02, 2020
Filing Date:
December 19, 2019
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B29C55/12; C08J5/18; B29K23/00; B29L7/00
Domestic Patent References:
| WO2017221781A1 | 2017-12-28 | |||
| WO2015012324A1 | 2015-01-29 |
Foreign References:
| JP2016188361A | 2016-11-04 | |||
| JP2006117956A | 2006-05-11 | |||
| JP2017226161A | 2017-12-28 | |||
| JP2017500226A | 2017-01-05 | |||
| JP2018130958A | 2018-08-23 |
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