Patent ID: 6438821
Filing Date: 2002-08-27
Classification: H01C,Y10T

Abstract:
A method for manufacturing a PTC thermistor, comprising:depositing a first metal foil layer on a top surface of a conductive polymer sheet; depositing a second metal foil layer on a bottom surface of the conductive polymer sheet; forming a first laminated body by heat pressing said first metal foil layer, said conductive polymer sheet and said second metal foil layer; forming a second laminated body by depositing conductive polymer sheets on a top and a bottom surface of said first laminated body and depositing a third metal foil layer and a fourth metal foil layer on said top and bottom conductive polymer sheets respectively and heat pressing said conductive polymer sheets and said third and fourth metal foil layers on the top and the bottom surfaces of the first laminated body wherein said method is repeated until a desired number of laminated bodies are obtained, â€œand wherein the first and second laminated bodies are formed non simultaneously.â€