Patent ID: 9392645
Filing Date: 2016-07-12
CPC Classification: H01C,H05B,Y10T

Claim Text:
1. A method of manufacturing semi-manufactured PTC heating elements ( 10 ) comprising a three-layer only laminate of an electrically insulating support foil ( 11 ), an electrically conductive foil ( 12 ), and a layer of a PTC compound ( 13 ) sandwiched between and directly contacting the electrically insulating support foil and the electrically conductive foil, the method comprising the steps of: providing the electrically insulating support foil ( providing the electrically conductive foil ( laminating the PTC compound ( wherein the step of laminating is performed by means of feeding the electrically insulating support foil and the electrically conductive foil between rolls ( wherein the PTC compound is formed to an evenly thick layer with a selected thickness (t) by means of controlling the distance (d) between the rolls.