Packaging material for battery

Details Packaging material for battery Packaging material for battery

2006-05-09

2006-05-09

Tarazano, D. Lawrence (Department: 1773)

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

C428S212000, C429S127000, C429S162000, C429S176000

Reexamination Certificate

active

07041380

ABSTRACT:
Disclosed is a packaging material for forming an armor body for a battery, the armor body being adapted for use in such a manner that a battery body is inserted into the armor body and the peripheral edge of the armor body is then heat sealed for hermetic sealing, the packaging material being a laminate comprising at least a substrate layer, an adhesive layer, a barrier layer, a dry laminate layer, and a sealant layer, characterized in that at least the sealant layer comprises a low-fluidity polypropylene layer having low susceptibility to collapse upon exposure to heat and pressure at the time of heat sealing and a high-fluidity polypropylene layer having high susceptibility to collapse upon exposure to heat and pressure at the time of heat sealing, and the innermost layer is the high-fluidity polypropylene layer. This battery packaging material can impart moisture barrier properties and resistance to contents of the battery.

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BE 741856 (1970), Derwent Abstract “Gould National Batteries”.
JP 11086842 (Mar. 1999) Derwent Abstract “Showa Aluminum Corp”.

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