公开(公告)号：US20230382090A1

公开(公告)日：2023-11-30

申请号：US18230552

申请日：2023-08-04

Applicant: TOPPAN INC.

Inventor： Ryosuke KOGA ,  Junpei HAYASHI ,  Tetsuo SATAKE ,  Kenta OSAWA

IPC: B32B27/08 ,  B32B7/12 ,  B32B27/30 ,  B32B27/32 ,  B32B27/16 ,  B65D65/40

CPC classification number: B32B27/08 ,  B32B7/12 ,  B32B27/306 ,  B32B27/32 ,  B32B27/16 ,  B65D65/40 ,  B32B2307/7242 ,  B32B2307/31 ,  B32B2307/748 ,  B32B2255/10 ,  B32B2255/20 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2250/03 ,  B32B2250/246 ,  B32B2307/518 ,  B32B2250/242 ,  B65D2565/387

Abstract: A gas barrier film includes a substrate containing polypropylene or polyethylene as a main ingredient, the substrate having a first surface and a second surface opposite the first surface; and a gas barrier layer arranged to face the first surface of the substrate. The second surface of the substrate has a wetting tension of 21 mN/m or more.