公开(公告)号：US12083774B2

公开(公告)日：2024-09-10

申请号：US17633538

申请日：2020-07-02

Applicant: TOPPAN INC.

Inventor： Shukiko Imaizumi ,  Tomokazu Murase

IPC: B32B27/32 ,  B32B33/00

CPC classification number: B32B27/32 ,  B32B33/00 ,  B32B2250/03 ,  B32B2255/20 ,  B32B2307/31 ,  B32B2553/00

Abstract: A barrier film according to the present disclosure has a base material film including a polyolefin-based resin; an inorganic oxide layer provided on one surface of the base material film; and a deformation-withstanding barrier coat layer provided on the inorganic oxide layer to be in contact therewith, wherein the deformation-withstanding barrier coat layer includes a hydroxyl group-containing polymer compound and water-swellable mica, and when the total mass of the deformation-withstanding barrier coat layer is taken as 100 parts by mass, the content of the water-swellable mica in the deformation-withstanding barrier coat layer is 5 parts by mass to 35 parts by mass.