| 摘要 |
PROBLEM TO BE SOLVED: To provide a method to eliminate a need for a scrape work and a cleaning work for acetone as fusion strength is maintained at a high value. SOLUTION: After a thermoplastic resin coupling 1 in which an electrothermic body 4 to generate thermal energy is embedded is fitted in and externally of a thermoplastic resin pipe 8, a power is fed to the electrothermic body 4 to generate thermal energy. Before a power is fed to the electrothermic body 4 to fuse together the resin coupling 1 and the resin pipe 8, a thermal shrinkable annular body 9 is fitted in and externally of the part to be fused of the resin pipe 8. |
