Laminated porous film and non-aqueous electrolyte secondary battery

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United States of America Patent

PATENT NO 9705120
SERIAL NO

14234700

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Abstract

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The present invention provides a laminated porous film and a non-aqueous electrolyte secondary battery. The laminated porous film is a laminated porous film in which a heat-resistant layer comprising a binder resin and a filler is laminated on one or both of the surfaces of a porous film substrate mainly comprising a polyolefin, wherein a part occupied by at least one out of the binder resin and the filler is formed in the porous film substrate so as to touch the heat-resistant layer, and the total thickness of the occupied part is not less than 1% and not more than 20% of the overall thickness of the porous film substrate. The non-aqueous electrolyte secondary battery comprises the laminated porous film according as a separator.

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Patent Owner(s)

  • SUMITOMO CHEMICAL COMPANY, LIMITED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hasegawa, Hirohiko Niihama, JP 26 229
Saitou, Yuzuru Niihama, JP 5 49

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