公开(公告)号：US12269241B2

公开(公告)日：2025-04-08

申请号：US17973694

申请日：2022-10-26

Applicant: TOPPAN INC.

Inventor： Miki Fukugami ,  Kaoru Furuta

IPC: B32B27/08 ,  B32B1/08 ,  B32B27/32 ,  B65D65/40

Abstract: A gas barrier film including: a substrate layer containing polypropylene; a resin layer containing a copolymer of propylene and another monomer; a vapor deposition layer of an inorganic oxide; and a gas barrier layer, laminated in this order, wherein the vapor deposition layer has a thickness of 5 nm to 300 nm, the resin layer has a thickness of 0.3 μm or more, and a surface of the resin layer facing the vapor deposition layer has at least one softening temperature in a range of 100° C. to 170° C. when measured by local thermal analysis (LTA).

公开(公告)号：US12071288B2

公开(公告)日：2024-08-27

申请号：US17630072

申请日：2020-07-22

Applicant: TOPPAN INC.

Inventor： Takeshi Nishikawa ,  Ayumi Tanaka ,  Miki Fukugami

IPC: B65D65/40 ,  B65D47/06 ,  C09D167/02

CPC classification number: B65D65/40 ,  B65D47/06 ,  C09D167/02 ,  B65D2565/385 ,  B65D2565/387

Abstract: The present disclosure relates to a gas barrier layered body including: a substrate layer containing a polyolefin-based resin; a first polyvinyl alcohol-based resin layer; a Si or Al-containing thin film layer; and a second polyvinyl alcohol-based resin layer, in the stated order, in which a logarithmic decrement at 100° C. of the first polyvinyl alcohol-based resin layer as measured by a rigid-body pendulum type physical property testing instrument is 0.20 or less and a logarithmic decrement at 125° C. is 0.30 or less, and an indentation hardness of the second polyvinyl alcohol-based resin layer as determined by a nanoindenter is 0.5 to 1.0 GPa.