Packaging material for cell
AssigneeDai Nippon Printing Co., Ltd.
InventorsAtsuko Takahagi, Hirohisa Akita, Sumito Nishida
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Abstract
A packaging material for a cell including a layered film in which at least a base-material layer, an adhesive layer, a metallic layer, and a sealant layer are layered in the stated order. The packaging material for a cell including a layered body in which at least a base-material layer, an adhesive layer, a metallic layer, and a sealant layer are layered in the stated order, wherein the packaging material for a cell can be imparted with highly exceptional moldability, and dramatically less prone to pinholing and cracking during molding by using, as the metallic layer, an aluminum foil having 0.2% yield strength of 58-121 N/mm2 when a tensile test is performed in the direction parallel to the rolling direction.
Claims6
A packaging material for a cell including a laminate with at least a base material layer, an adhesive layer, a metal layer and a sealant layer laminated in this order, wherein the metal layer is an aluminum foil which, when a tensile test is conducted in a parallel direction with respect to a rolling direction:
- has a 0.2% yield strength of 58 to 121 N/mm2, and
- satisfies a tensile rupture strength of 102 to 130 N/mm2.
Dependencies are inferred from the claim text.