| http://www.w3.org/ns/prov#value | - Since the acid-denatured polyolefin resin layer is heat-adhesive not only to itself, but also to metals, such as copper and aluminum, a battery case formed by processing the battery case forming sheet and having the shape of a pouch having one open end through which the tabs 59 and 60 extend outside from the battery case can be sealed by satisfactorily heat-sealing the open end of the battery case
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