BATTERY PACKAGING MATERIAL AND BATTERY

摘要

A battery packaging material 1 of this invention has a stretched heat-resistant resin film layer as an outer layer 2 which is laminated and integrated on one surface of an aluminum foil layer 4 through a first adhesive layer 5; and a non-stretched thermoplastic resin film layer which is laminated and integrated as an inner layer 3 on the other surface of the aluminum foil layer 4 through a second adhesive layer 6, in which the second adhesive layer 6 is an adhesive layer which is formed by a dry lamination method and whose melting point is 60° C. to 100° C., the adhesion strength of the inner layer 3 and the aluminum foil layer 4 is 3.0 N/15 mm width or more at 80° C., and the adhesion strength is 2.0 N/15 mm width or less at 120° C. The battery packaging material has good productivity, can suppress cost, and can secure sufficient seal properties, in which when the temperature of a battery case constituted by the packaging material excessively rises, degassing is performed, so that the burst of the packaging material due to the internal pressure rise can be prevented.

主权项

1. A battery packaging material, comprising:
a stretched heat-resistant resin film layer as an outer layer which is laminated and integrated on one surface of an aluminum foil layer through a first adhesive layer; and a non-stretched thermoplastic resin film layer as an inner layer which is laminated and integrated on another surface of the aluminum foil layer through a second adhesive layer, wherein the second adhesive layer is an adhesive layer which is formed by a dry lamination method and whose melting point is 60° C. to 100° C., and an adhesion strength of the inner layer and the aluminum foil layer is 3.0 N/15 mm width or more at 80° C., and the adhesion strength of the inner layer and the aluminum foil layer is 2.0 N/15 mm width or less at 120° C.