公开(公告)号：US20220281156A1

公开(公告)日：2022-09-08

申请号：US17749456

申请日：2022-05-20

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Daisuke YASUDA ,  Rikiya YAMASHITA ,  Takanori YAMASHITA

IPC: B29C55/12 ,  B32B27/36 ,  B65D65/40 ,  H01M50/116 ,  H01M50/124 ,  H01M50/183

Abstract: A technology for improving molding properties while minimizing curling after molding in a battery packaging material comprising a laminate that is provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. This battery packaging material is configured from at least a laminate provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. The birefringence of the polyester film is in the range of 0.016-0.056.

公开(公告)号：US20200168857A1

公开(公告)日：2020-05-28

申请号：US16632250

申请日：2018-07-19

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Kaoru TSUMORI ,  Takanori YAMASHITA ,  Rikiya YAMASHITA

IPC: H01M2/02 ,  B32B27/08 ,  B32B27/36 ,  H01M2/08 ,  B32B7/12 ,  B32B27/32

Abstract: A battery packaging material having excellent long-term adhesion of a barrier layer having an acid resistance film. The battery packaging material includes a laminate including at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order, wherein the battery packaging material includes an acid resistance film on at least one surface of the barrier layer, and when the acid resistance film is analyzed using time-of-flight secondary ion mass spectrometry, a PPO3/CrPO4 ratio, which is the ratio of peak intensity PPO3 derived from PO3− to peak intensity PCrPO4 derived from CrPO4−, falls within a range of 6 to 120.