Title:
GAS BARRIER FILM, PACKAGING FILM, AND PACKAGING BAG
Document Type and Number:
WIPO Patent Application WO/2023/219141
Kind Code:
A1
Abstract:
A gas barrier film comprising, in order: a substrate layer that includes a polypropylene resin; a vapor deposition layer that includes an inorganic oxide; and a gas barrier coating layer. The substrate layer comprises a first skin layer and a core layer. The vapor deposition layer is formed on the first skin layer side. As measured according to a nano-indentation method, the hardness of the first skin layer is 0.02-0.15 Gpa, the hardness of the core layer is 0.07 Gpa or greater, and the hardness of the core layer is greater than the hardness of the first skin layer.
Inventors:
FUKUGAMI MIKI (JP)
FURUTA KAORU (JP)
SASAKI NORIKO (JP)
FURUTA KAORU (JP)
SASAKI NORIKO (JP)
Application Number:
PCT/JP2023/017786
Publication Date:
November 16, 2023
Filing Date:
May 11, 2023
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
B32B27/00; B32B9/00; B32B27/32; B65D65/40
Domestic Patent References:
| WO2021230319A1 | 2021-11-18 | |||
| WO2022085586A1 | 2022-04-28 | |||
| WO2020129291A1 | 2020-06-25 | |||
| WO2020085463A1 | 2020-04-30 |
Foreign References:
| JP2006159801A | 2006-06-22 | |||
| JPH09290477A | 1997-11-11 | |||
| JP2021028394A | 2021-02-25 | |||
| JP2000233476A | 2000-08-29 | |||
| JP2021041620A | 2021-03-18 | |||
| JP2017177685A | 2017-10-05 | |||
| JP2017069203A | 2017-04-06 | |||
| JP2023056928A | 2023-04-20 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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