Toughening of PVC-separator-enveloped battery plates
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United States of America Patent
Stats
-
Jul 8, 1980
Grant Date -
N/A
app pub date -
Dec 4, 1978
filing date -
Dec 4, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sheet of sintered PVC battery separator material is folded around a battery plate along the bottom edge thereof and heat sealed to itself along the lateral edges of the plate to form an envelope around the plate. The fold is then contacted with a plasticizer (i.e., n-methyl-2-pyrolidone) to toughen it against damage such as splitting, cracking, chipping, etc. during subsequent in-plant handling of the plates. Dimethyl and/or diethyl phthalate may be added to the n-methyl-2-pyrolidone to provide toughening for periods up to about five days.
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Cited Art Landscape
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