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.