Method of repairing a pipeline with an injected resin

Details Method of repairing a pipeline with an injected resin Method of repairing a pipeline with an injected resin

1994-04-01

1996-08-27

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Repairing or restoring consumer used articles for reuse

138 97, 138 98, 156 94, 156287, 156294, 264516, 264269, B29C 6336

Patent

active

055498566

ABSTRACT:
A resin injection method and a pipeline repair method are provided for smoothly and rapidly performing setting of an open liner and for completing works such as eversion and insertion of the open liner even for a steeply inclined pipeline. An end portion of an open liner is everted such that the end is attached to one end of a pipe liner bag which has been introduced into a pipeline to be repaired. A resin is injected into the open liner from the other end thereof while the pipe liner bag is evacuated, thus injecting the resin into the pipe liner bag through the open liner. After the resin has been injected into the pipe liner bag 1 in the above-mentioned method, the open liner is everted by fluid pressure to be inserted into the pipe liner bag, whereby the resin is impregnated into the pipe liner bag. Then, the pipe liner bag is pressed against the inner wall of the pipeline 4, in which state the resin impregnated in the pipe liner bag is cured to repair the pipeline. This pipe repair method allows the pot life of the resin to be shortened, so that a work term required for the repair operations can be reduced.

REFERENCES:
patent: 4009063 (1977-02-01), Wood
patent: 4135958 (1979-01-01), Wood
patent: 4334943 (1982-06-01), Zenbayashi et al.
patent: 4366012 (1982-12-01), Wood
patent: 4602974 (1986-07-01), Wood et al.
patent: 5348764 (1994-09-01), Yokoshima
patent: 5384086 (1995-01-01), Smith

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