Abstract: The present invention relates to a PTC (Positive Temperature Coefficient) element manufactured using a polymer aqueous emulsion conductive composite, and a planar heating element using the same. By controlling electric connection of the heating element using the PTC element, it is possible to control a heating temperature of the heating element to be in a desired range and to improve stability of the heating element. It is easy to manufacture the PTC manufactured using the polymer aqueous emulsion conductive composite, and PTC characteristics thereof can be satisfactorily kept even in use for a long period. Since the planar heating element manufactured using the PTC element has a self temperature control function, a separate temperature control device is unnecessary, which is economical.

Abstract: Disclosed are a method for manufacturing a positive temperature coefficient (PTC) device and a system for preventing overheating of a planar heater using the same. The manufacturing of the positive temperature coefficient (PTC) device is performed by mixing one or more polymer resins selected from ethylene butyl acrylate copolymers, ethylene vinyl acetate copolymers and polyethylene oxide, carbon black and an additive to prepare a compounding composition, adhering an electrode to both surfaces of the compounding composition, compressing the resulting electrode structure into a sheet, and irradiating electron beams to the sheet to perform cross-linking. Also, disclosed is a planar heater overheating prevention sensor cable obtained by connecting a plurality of PTC devices in series and adhering the devices to the surface of a planar heater by a predetermined distance.

Abstract: Disclosed are a method for manufacturing a positive temperature coefficient (PTC) device and a system for preventing overheating of a planar heater using the same. The manufacturing of the positive temperature coefficient (PTC) device is performed by mixing one or more polymer resins selected from ethylene butyl acrylate copolymers, ethylene vinyl acetate copolymers and polyethylene oxide, carbon black and an additive to prepare a compounding composition, adhering an electrode to both surfaces of the compounding composition, compressing the resulting electrode structure into a sheet, and irradiating electron beams to the sheet to perform cross-linking. Also, disclosed is a planar heater overheating prevention sensor cable obtained by connecting a plurality of PTC devices in series and adhering the devices to the surface of a planar heater by a predetermined distance.