Title:
BARRIER FILM, LAMINATE, AND PACKAGING BAG
Document Type and Number:
WIPO Patent Application WO/2023/095915
Kind Code:
A1
Abstract:
The barrier film according to an aspect of the present disclosure has a multilayer structure which is provided with a base layer containing polypropylene, a vapor deposition layer containing an inorganic oxide, and a gas barrier layer in the stated order, and in which the base layer is provided with at least three layers including a first skin layer, a core layer, and a second skin layer in the stated order. When the softening temperatures of the layers in the base layer is measured by local thermal analysis (LTA), the first skin layer has at least one of the softening temperatures at 120°C or more, the core layer has at least one of the softening temperatures at 190°C or more, and the second skin layer has at least one of the softening temperatures at 160°C or less.
Inventors:
FUKUGAMI MIKI (JP)
YAMAKAWA IKUKO (JP)
FURUTA KAORU (JP)
YAMAKAWA IKUKO (JP)
FURUTA KAORU (JP)
Application Number:
PCT/JP2022/043811
Publication Date:
June 01, 2023
Filing Date:
November 28, 2022
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
B32B27/32; B32B7/027; B32B9/00; B65D65/40
Domestic Patent References:
| WO2021230319A1 | 2021-11-18 | |||
| WO2021112243A1 | 2021-06-10 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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