Patent ID: 6066184
Filing Date: 2000-05-23
Classification: H01M,Y02E,Y10T

Abstract:
A process for the production of a voltaic button cell having a liquid-tight sealed metal housing, comprising the steps of:heating a polyamide film of a thickness from 0.1 to 0.3 mm to a temperature of about 100-120.degree. C.,deep drawing the heated polyamide film under a vacuum and forming a cup-shaped sealing part for the button cell,cutting out an opening in the bottom of the cup, thereby forming a sealing element,mounting the sealing element on the lid of a button cell, andinserting the cell lid into a housing cup,flanging the cell lid and the housing cup together in a liquid tight manner such that said sealing part insulates the cell-lid from the housing cup, andseparating the button cell from the apparatus, thereby obtaining the cell.