CONNECTION METHOD FOR THERMOPLASTIC RESIN PIPE

摘要

PROBLEM TO BE SOLVED: To integrally produce a T-, Y-, cross-or the like shaped thermoplastic resin pipe without providing an excessive connecting branch pipes. SOLUTION: A thermoplastic resin first pipe having pipe connecting portions in its midway is set in the first longer groove of a bottom mold and a thermoplastic resin second pipe is set in the second longer groove of the bottom mold. A top mold is put on the bottom mold so as to match with each other. Finally, high frequency electric current is applied between a mandrel and electrically conductive metal plates mounted to the top and the bottom molds.