| abstract |
The present invention provides a packaging material for batteries, which comprises a laminate in which at least a base material layer, a metal layer and a sealing layer are sequentially laminated, and has a thin overall thickness and excellent formability and puncture strength. The battery packaging material includes a laminate in which at least a base layer, a metal layer and a sealing layer are laminated in this order, the total thickness of the laminate is in the range of 50 to 80 μm, and the thickness of the base layer and the metal layer is The ratio with respect to the total thickness of the said laminated body exists in the range of 0.380-0.630. |