METHOD OF INSERTING FLEXIBLE TUBE INTO PIPE

摘要

PROBLEM TO BE SOLVED: To provide a method capable of smoothly inserting a flexible tube such as a lining material 1 or the like even into a pipe having many bends by preventing twists from being accumulated too much in a belt-like long material with advance of reversion.

SOLUTION: In the method of inserting the flexible tube 1 into the pipe 6 by inserting the belt-like long material 4 into the whole length of the soft and flexible tube 1, pulling the belt-like long material 4 protruding from the reversing portion via a pulling cord 5 while reversing the flexible tube 1 with fluid pressure so that the inside turns into the outside, and thereby advancing the reversion, the pulling cord 5 is a string twisted in the same spiral direction as a spiral direction of weft yarn 14 of the flexible tube 1 before reversion.

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