Outer packaging material for battery, and battery
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United States of America Patent
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Aug 23, 2016
Grant Date -
May 22, 2014
app pub date -
Oct 10, 2013
filing date -
Nov 1, 2012
priority date (Note) -
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Abstract
An outer packaging material for a battery includes a heat resistant stretched resin film layer as an outer layer integrally laminated on one of surfaces of an aluminum foil layer via a first adhesive layer. A thermoplastic unstretched resin film layer as an inner layer is integrally laminated on the other surface of the aluminum foil layer via a second adhesive layer. An adhesive strength between the inner layer and the aluminum foil layer is 4N/15 mm-width to 30N/15 mm-width, and an adhesive strength between the outer layer and the aluminum foil layer is 2N/15 mm-width to 14N/15 mm-width. As a thermoplastic unstretched resin film constituting the inner layer, a thermoplastic unstretched resin film having a sealing strength of two sheets of the thermoplastic unstretched resin films arranged one on the other and heat sealed exceeding 30N/15 mm-width but not exceeding 110N/15 mm-width is used.
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