公开(公告)号：US12030286B2

公开(公告)日：2024-07-09

申请号：US17967031

申请日：2022-10-17

Applicant: TOPPAN INC.

Inventor： Ayumi Tanaka

IPC: B32B27/08 ,  B32B1/08 ,  B32B7/12 ,  B32B27/32 ,  B65D65/40

CPC classification number: B32B27/08 ,  B32B1/08 ,  B32B7/12 ,  B32B27/32 ,  B65D65/40 ,  B32B2255/10 ,  B32B2255/20 ,  B32B2264/1021 ,  B32B2307/7244 ,  B32B2439/46

Abstract: A gas barrier laminate (including a substrate layer containing a polyolefin, a metal oxide layer, and a gas barrier cover layer in this order. The gas barrier cover layer contains a silicon alkoxide or a hydrolysate thereof and a water-soluble polymer, and a content ratio a/b between a content of silicon atoms of the silicon alkoxide or a hydrolysate thereof (mass part a) and a content of the water-soluble polymer (mass part b) is 3/97 or more and 45/55 or less in mass ratio.

公开(公告)号：US12214573B2

公开(公告)日：2025-02-04

申请号：US17585817

申请日：2022-01-27

Applicant: TOPPAN INC.

Inventor： Ayumi Tanaka

IPC: B32B27/08 ,  B32B7/12 ,  B32B27/30 ,  B32B27/32 ,  B65D65/40 ,  B65D65/42 ,  C23C14/08 ,  C23C14/10 ,  C23C14/24

Abstract: A gas barrier laminate includes a polypropylene substrate layer; a first polyvinyl alcohol resin layer; and a metal oxide layer, which are laminated in this order, wherein the first polyvinyl alcohol resin layer has a mass per unit area of 0.5 to 2.5 g/m; and, a packaging material includes the above gas barrier laminate and a polypropylene sealant layer disposed on a surface of the gas barrier laminate, wherein a mass ratio of a sum of the polypropylene substrate layer and the polypropylene sealant layer to a total mass of the packaging material is 85 mass % or more.

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.