Flat cell
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United States of America Patent
Stats
-
Mar 22, 1988
Grant Date -
N/A
app pub date -
Jun 12, 1986
filing date -
Dec 10, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flat cell is sealed along the confronting peripheral inner surfaces of positive and negative terminal plates. A pair of sealing films are disposed on the respective peripheral inner surfaces. Each sealing film is comprised of a first thermoplastic layer composed of maleic acid modified polyethylene thermally secured to the peripheral inner surface, a second intermediate thermoplastic layer composed of high-density polyethylene and a third thermoplastic layer composed of maleic acid modified polyethylene so that the confronting third layers of the pair of sealing films are thermally secured to each other to seal the flat cell.
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