ELEMENTO GALVANICO, IN PARTICOLARE CELLA A BOTTONE.

摘要

Galvanic elements of button cell type are sealed against electrolyte escape by positioning a hydroxide binding material between the housing cup and the lid on that side of the synthetic plastic seal which is normally sealed off from contact with the electrolyte. This material can be positioned within a ring of matting which is protected from moisture by a coating of lacquer or a shrink tube. The hydroxide binding material for which solids such as B2O3, As2O3 or acid salts such as NaH2PO4, Na2H2P2O7 may be used, may also be positioned in encircling grooves provided in the sealing body itself.