BONDED MEMBER OF RESIN MOLDED MEMBERS AND BONDING METHOD OF RESIN MOLDED MEMBERS

摘要

PROBLEM TO BE SOLVED: To efficiently bond tubes mutually when the tubes made of a synthetic resin constituting the blood circuit of medical machinery are bonded and to prevent a solvent from flowing through the tubes when the tubes are melted and welded by a solvent. SOLUTION: Conductive paste is preliminarily applied to the peripheral surfaces of tubes C3, C4 made of a synthetic resin at the bonding part Sa of the tubes. An induction coil 4 is arranged to the periphery of the bonded part Sa and, when a high frequency current is applied to the induction coil 4, an alternating magnetic field is applied to the conductive paste of the bonding part Sa from the induction coil 4 and an induced current is caused in the conductive paste to generate Joule heat. The resin of the tubes C3, C4 is melted by this heat and the tubes are mutually melted and welded at the bonding part Sa. As a result, the utilization efficiency of welding energy is improved and the inner surfaces of the tubes can be kept clean.