Patent ID: 6389681
Filing Date: 2002-05-21
Classification: H05B,Y10T

Abstract:
A method of forming an electric heating/warming composite fabric article, comprising:providing a fabric layer having an inner surface and an outer surface and a barrier layer resistant to through-passage of air and having an inner surface and an outer surface, joining the inner surface of the fabric layer to the outer surface of the barrier layer, applying an electricity-conducting paste upon the inner surface of the barrier layer in a predetermined pattern of an electric circuit, and curing the electricity-conducting paste to form an electric heating/warming element in the form of a flexible, electricity-conducting film defining an electric circuit upon the inner surface of the barrier layer, the electric heating/warming element being adapted for connection to a power source, thereby to generate heating/warming, and said flexible, electricity-conducting, heat-generating film comprising synthetic resin material and comprising, in electrical current flow direction, a first circuit filament region adapted to generate heat at a first rate and a second circuit filament region adapted to generate heat at a second rate, said first rate being different from said second rate.