公开(公告)号：US20190143646A1

公开(公告)日：2019-05-16

申请号：US16206532

申请日：2018-11-30

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Yu OGIWARA ,  Junya IMAMOTO ,  Masayoshi SUZUTA

IPC: B32B15/085 ,  B32B15/088 ,  B32B15/09 ,  B32B7/12 ,  H01M2/08 ,  H01M2/02

Abstract: A power storage device packaging material includes at least a substrate layer, a metal foil layer having an anticorrosion treatment layer on one or both sides thereof, and a sealant layer in this order. In the packaging material, the sealant layer includes a propylene-based branched polymer-containing layer that contains a propylene-based branched polymer having branched chains.