| 摘要 |
PROBLEM TO BE SOLVED: To provide a closing method for a pipe wall hole part which achieves shortening of work time and which can form favorable appearance without requiring a large scale device.SOLUTION: A coating member 1 made of thermoplastic resin is arranged from an inner surface side with respect to a hole part 81 of a pipe body and the hole part 81 is covered. A heating fusion jig 2 is applied to the coating member 1, and the coating member 1 is pressed toward the inner surface of the pipe body and heated at a temperature of a melting point or higher of the coating member 1. At this time, the coating member 1 is pressed and heated by interposing a heat conduction plate between a plate heater of the heating fusion jig 2 and the coating member 1. After heating for set time, the plate heater is separated from the coating member 1 while the heat conduction plate is adhered to the coating member 1, so that the coating member 1 is cooled alongside the heat conduction plate.SELECTED DRAWING: Figure 1 |
