公开(公告)号：US20240162534A1

公开(公告)日：2024-05-16

申请号：US18390838

申请日：2023-12-20

Applicant: TOPPAN INC.

Inventor： Taketo Numazawa

IPC: H01M50/121 ,  B65D65/40 ,  H01M50/129 ,  H01M50/183

CPC classification number: H01M50/121 ,  B65D65/40 ,  H01M50/129 ,  H01M50/183

Abstract: A packaging material for a power storage device, including a laminate structure of a substrate layer, a first adhesive layer, a barrier layer, a second adhesive layer, and a sealant layer, in this order, wherein at least one of the first adhesive layer and the second adhesive layer contains a urethane compound or a urea compound; the urethane compound is a polyol resin with a polyfunctional isocyanate compound; the urea compound is a polyfunctional isocyanate compound an amine compound or an amine derivative; and, when a peak intensity of infrared absorption spectrum at 1,700 to 1,800 cm−1 measured using infrared spectroscopy (A”), and a peak intensity of infrared absorption spectrum at 1,600 to 1,660 cm−1 measured using infrared spectroscopy (“B”), a value X that is defined by the following Formula (1), which is X={B/(A+B)×100, satisfies a relationship 0.1≤X≤7.0.