Battery separator

Details Battery separator Battery separator

2008-07-22

2008-07-22

Juska, Cheryl (Department: 1794)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Nonwoven fabric

Including strand or fiber material which is of specific...

C442S340000, C442S351000, C442S350000, C442S363000, C442S414000, C429S249000

Reexamination Certificate

active

07402539

ABSTRACT:
Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 m2or more, a thickness of the nonwoven fabric is 0.1 mm or less, a uniformity index of the nonwoven fabric is 0.15 or less, and the nonwoven fabric contains fine fibers having a fiber diameter of 4 μm or less.

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