| abstract |
At least, in a thermomechanical analysis comprising a substrate layer, an adhesive layer, a barrier layer, and a heat-fusible resin layer in this order, and measuring the displacement amount of the probe, the cross section of the laminate When the probe is mounted on the surface of the adhesive layer, the set value of the deflection of the probe at the start of measurement is -4V and the temperature rise rate is 5°C/min, and the probe is heated from 40°C to 350°C. A battery packaging material wherein the temperature at which the displacement amount of the probe is maximum is 190°C or more and 320°C or less. |