From chemical formulation on a double screw extruder to the extrusion of self-regulating heating cable in multi-layer, the company HEATSELF controls the entire industrial chain.
The self-regulating material consists of a hot dispersion of electrically conductive particles in an insulating matrix.
Under electric power, conductive paths allow heating.
The number of conductor paths decreases as the temperature increases : the material self-regulates.
The working of the product with a positive temperature coefficient effect :
The material constituting the heating cable has an electrical resistance sensitive to temperature.
Under electric voltage, this material has an electric power dependent on the thermal environment.