| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of forming a resin lining to the inner surface of an existing pipe using a pig, capable of depositing a film having a uniform thickness in the circumferential direction of the resin lining film in spite of a simple method. <P>SOLUTION: The method is for forming the resin lining film corresponding to a gap between an outer periphery of a pig and the inner surface of the pipe by using the pig having the diameter which is smaller than the internal diameter of the pipe, filling with the resin disposed forwardly of traveling direction of the pig inserted in the pipe to form the resin reservoir and move the pig by pressing the resin reservoir. The specific gravity of the pig is 0.3 to 0.7. <P>COPYRIGHT: (C)2013,JPO&INPIT |
