Method of lining a pipeline

Details Method of lining a pipeline Method of lining a pipeline

2007-09-18

2007-09-18

Hook, James (Department: 3754)

Pipes and tubular conduits

Repairing

Patches

C138S097000, C405S150100, C405S150200, C405S184200

Reexamination Certificate

active

11152004

ABSTRACT:
The present invention is an improved method for installing a liner to repair a pipeline. The method involves placing a flexible lining hose that is coated with a thermosetting resin into the pipeline. A quick setting resin is also applied to the interior walls of the pipeline wherein the resin has a high contrast pigment agent therein in order to facilitate identification of and reopening of the various service laterals. A calibration hose is introduced into the lining hose and pressurized fluid is injected therein. The fluid presses the lining hose against the interior surface of the pipeline and cures the first and second thermosetting resins. The curing of the resins bonds the lining hose to the pipeline to form a rigid monolithic composite structure having high mechanical strength.

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