公开(公告)号：US20240149572A1

公开(公告)日：2024-05-09

申请号：US18544875

申请日：2023-12-19

Applicant: TOPPAN INC.

Inventor： Ryota TANAKA ,  Haruka OMORI ,  Kenta OSAWA ,  Kenji MATSUHISA

IPC: B32B27/08 ,  B32B7/12 ,  B32B27/32 ,  B32B33/00

CPC classification number: B32B27/08 ,  B32B7/12 ,  B32B27/32 ,  B32B33/00 ,  B32B2250/02 ,  B32B2307/31 ,  B32B2307/42 ,  B32B2307/7242 ,  B32B2553/00

Abstract: A gas barrier film includes a base material containing a polyethylene as a main resin component and an inorganic oxide layer formed on a first surface side of the base material. The birefringence AN of the first surface calculated based on measurement by a parallel Nicol rotation method is 0 or more and 0.007 or less, and the proportion of the polyethylene in the entire gas barrier film is 90 mass % or more.