Dip process for enveloping a battery plate

Details Dip process for enveloping a battery plate Dip process for enveloping a battery plate

1988-08-01

1989-12-05

Kalafut, Stephen J.

Metal working

Method of mechanical manufacture

Electrical device making

429137, H07M 218

Patent

active

048850071

ABSTRACT:
An improved dip method of enveloping a battery plate with a microporous separator material. The method involves first removing air bubbles and residual water from the plate by dipping the plate in an anhydrous liquid such as anhydrous solvent or anhydrous solvent
onsolvent solution, then dipping the plate in a second liquid comprising a polymer-solvent-filler or polymer-solvent
onsolvent-filler suspension. After removal from the second liquid, the plate is dried by evaporation. The result is the formation of a microporous separator envelope about the battery plate. The plate may be dipped in a third liquid before drying. The third liquid may have a viscosity greater than that of the second liquid.

REFERENCES:
patent: 3023261 (1962-02-01), Louis et al.
patent: 4524509 (1985-06-01), Wegner
patent: 4551401 (1985-11-01), Wilson

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