| abstract |
A battery packaging material having high insulation and durability is provided. [Solution] At least a laminate comprising a base material layer, a metal layer, an adhesive layer, and a heat-fusible resin layer in this order, The adhesive layer has an acid-modified polyolefin and a resin composition containing an epoxy resin, In measuring the displacement of the probe using a thermomechanical analyzer, when the probe is installed on the surface of the adhesive layer at the end of the battery packaging material and the probe is heated from 40 ° C. to 220 ° C., Battery packaging material whose position does not drop below the initial value. [Selection figure] None |