| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a practical pipe joining method for melting and solidifying a bonding face inexpensively in a short time and dispensing with adhesive and a seal tape. <P>SOLUTION: In this pipe joining method, either of first and second pipes 1, 2 is formed by a thermoplastic material, pigment 3 being absorbed in laser beams 4 is applied on an outer peripheral face of one end of the first pipe, the one end of the first pipe and one end of the second pipe are mutually fitted so that an inner peripheral face of the one end of the second pipe is abutted on the outer peripheral face of the one end of the first pipe, and laser beams are applied on the whole periphery of a fitting part from an outer side of the second pipe to thermally fusion-bond a face where the first and second pipes are mutually abutted and join them. <P>COPYRIGHT: (C)2009,JPO&INPIT |
