Ultra-thin, single-ply battery separator

Details Ultra-thin, single-ply battery separator Ultra-thin, single-ply battery separator

1999-11-16

2000-10-17

Kalafut, Stephen

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

156160, 156227, B29D 700

Patent

active

061326542

ABSTRACT:
A battery separator is made from a microporous polyolefin membrane having a thickness of less than or equal to 0.5 mil. The separator is made by extruding a parison, collapsing the parison to form a flat sheet comprising two plies, annealing the sheet, stretching the sheet, and winding the sheet.

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"Characterization of Microporous Membrane Separators", Mar. 1-4, 1993 delivered at the Tenth International Seminar on Primary and Secondry Battery Technology and Application Coordinated by: Florida Educational Seminars, Inc. 2836 Banyan Blvd. Circle NW, Boca Raton, FL 33431.

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