Title:
BIAXIALLY ORIENTED POLYPROPYLENE FILM
Document Type and Number:
WIPO Patent Application WO/2020/137789
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, has minimal pitch deviation during printing, and has few wrinkles in a sealing part when heat sealed. The biaxially-oriented polypropylene film has stress (F5) when stretched 5% at 23°C of 40 MPa or more in the longitudinal direction and 160 MPa or more in the width direction, 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/JP2019/049806
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:
| WO2015072291A1 | 2015-05-21 | |||
| WO2016182003A1 | 2016-11-17 |
Foreign References:
| JP2001106804A | 2001-04-17 | |||
| JP2002128913A | 2002-05-09 | |||
| JP2017500226A | 2017-01-05 | |||
| JP2018130958A | 2018-08-23 | |||
| JP2013177645A | 2013-09-09 |
Other References:
ZAMBELLI ET AL., MACROMOLECULES, vol. 6, 1973, pages 925
See also references of EP 3904049A4
See also references of EP 3904049A4
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