PTC temperature self-limiting electric heating band

The utility model relates to a PTC temperature self-limiting electric heating band, which is composed of an insulating sheath coated on the outermost part of the utility model and a heating body formed by two parallel electric core wires and PTC materials (an electric heating conductor has the resistivity of a very high positive temperature coefficient) which are extruded and molded on the out of the two parallel electric core wires. Each electric core wire is composed of more than one (contains one) wire which is wound on chemical fibre spirally. The utility model has the advantages of automatic temperature control, overheating preventing, electric energy saving, better flexibility, better bending resistance performance, and better pull resistance strength. The utility model can be cut short at will or can be connected to long in a certain length for use. The utility model can be widely used in multiple industries such as petroleum industry, chemical industry, electric power industry, steel and iron industry, electric appliance industry, etc.