Method of everting a pipe liner bag into a pipeline

Details Method of everting a pipe liner bag into a pipeline Method of everting a pipe liner bag into a pipeline

1997-11-20

1999-05-25

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

156287, 156294, 264130, 264269, B29C 6336

Patent

active

059067896

ABSTRACT:
A method of everting a pipe liner bag into a pipeline which enables smooth eversion of a pipe liner bag using a minimally required amount of lubricant. When a pipe liner bag including a resin absorbent material impregnated with a hardenable resin and a plastic film covering the outer surface of the resin absorbent material is everted into a pipeline using a fluid pressure, the pipe liner bag is applied with oil (lubricant) on the outer surface thereof. Since the application of oil is performed immediately before everting the pipe liner bag, the pipe liner bag can be smoothly everted into the pipeline only using a minimally required amount of oil.

REFERENCES:
patent: 4135958 (1979-01-01), Wood
patent: 4581085 (1986-04-01), Wood
patent: 5106440 (1992-04-01), Tangeman
patent: 5135698 (1992-08-01), Salama et al.
patent: 5486332 (1996-01-01), Kamiyama et al.
patent: 5549856 (1996-08-01), Yokoshima

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