Patent ID: 6152971
Filing Date: 2000-11-28
Classification: H01M,Y02E,Y10T

Abstract:
A process for producing an electrode plate for a secondary battery with a nonaqueous electrolyte, comprising the steps of:applying a peelable material on a predetermined area at a collector surface, and drying same to form a peelable layer;applying an electrode forming composition comprising an active material and a binder on the collector surface to form an active material layer lying over at least one area of the peelable layer previously formed; andpeeling the peelable layer from a collector together with a portion of the active material layer disposed on the peelable layer to partially expose the collector surface, thereby forming a noncoated portion having a predetermined pattern on the collector surface wherein the peeling of the peelable layer comprises pressing down a peeler sheet, which comprises at least a thermoplastic resin layer, on an area of a surface of the active material layer overlapping with the peelable layer in a heating condition while facing the thermoplastic resin layer toward the active material layer to bond the thermoplastic resin layer of the peeler sheet to a portion of the active material layer disposed on the peelable layer, andpeeling the peeler sheet from the collector surface together with the peelable layer and a portion of the active material layer disposed on the peelable layer to partially expose the collector surface, thereby forming the noncoated portion having a predetermined pattern on the collector surface.