| abstract |
The battery packaging material of the present invention is composed of a laminate having at least a base material layer, a barrier layer, and a heat-fusible resin layer in this order, and the base material layer has at least a polyamide resin layer and an adhesive resin layer in this order from the side of the barrier layer. and a polyester resin layer, the thickness of the polyester resin layer is 6 μm or less, based on ASTM D3420, the impact strength (J) of the laminate measured from the base layer side is divided by the laminate The value obtained by the thickness (μm) is 0.015 J/μm or more. |