Patent ID: 6035518
Filing Date: 2000-03-14
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
A method for preparing a cylindrical separator from sheet material and for inserting the separator in the cylindrical anode space of a semi-finished cylindrical cell, in which said anode space has a predetermined diameter, comprising the steps of:feeding a sheet separator material of predetermined length towards the surface of a cylindrical mandrel with a diameter smaller than said diameter of the anode space, said mandrel defining a hollow interior and provided with bores;establishing a vacuum in said hollow interior of the mandrel to fasten said separator material to the surface of said mandrel by means of the sucking effect of the vacuum through said bores;rotating said mandrel to wind up said separator material;inserting the mandrel with said winding in said cylindrical anode space;terminating said vacuum to disconnect said mandrel from said winding and to let said winding slightly expand and being stressed against the wall of said anode space; andwithdrawing said mandrel.