Spot-welded fibrous separator for battery

Details Spot-welded fibrous separator for battery Spot-welded fibrous separator for battery

H - Electricity

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319/58

H01M 2/14 (2006.01) D04H 1/54 (2006.01) H01M 2/16 (2006.01)

Patent

CA 1039349

ABSTRACT OF THE DISCLOSURE A separator material for electrolytic cells and particularly for storage batteries comprising, a non-woven textile fabric of thermoplastic fibres and/or endless threads of thermoplastic which are themselves electrolyte-resistant, and in which the separator material is consolidated by spot welds through the material. The spot welds occupy about 2 to 40% of the total surface area of the consolidated material. Textile fabric separa- tors consisting of one or more of a polyolefin, polyamide, polycarbonate and polyester fibres, or mixtures, or heterofilament fibres of these materials are described. The surface of the consolidated material may be profiled by employing two layers of non-woven textile material and inserting threads in the intervening spaces between the two layers and the spot welds.

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