| abstract |
(57) [Abstract] [Purpose] It is possible to melt the end face of a resin tubular part in a short time and at a low temperature, and therefore reduce the energy consumption required for it. A heater used when a pair of resin pipes (2, 4) to be connected are opposed to each other, and the opposing end faces are respectively heated and melted, and then both resin pipes are relatively brought close to each other and welded. A radiator (10e, 10f) made of a material capable of emitting far infrared rays having a high emissivity including a wavelength region having a relatively high absorptance in an absorption spectrum of a resin pipe to be connected, And a heating element (10a) for heating the body to emit a predetermined far infrared ray. In a preferred embodiment of the present invention, the resin pipe is made of PTFE, FEP, PFA, ETFE, CTFE, It is made of a fluorine-based resin such as PVDF or a high-grade engineering plastic such as PPS, and the radiator is composed of a thin ceramic layer. |