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US 4,439,469 AGranted
Formation of a lining in pipelines
AssigneeInsituform International N.V.
InventorEric Wood
Life of this patent
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Abstract
A method of forming a lining in a pipeline comprising forming on the inner surface of the pipeline a film of initiator and following the formation of this film of initiator, a layer of resin is formed on the film of the initiator for effecting accelerated cure of the resin thereby to form a cured lining in the pipeline inner surface.
Claims7
A method of forming a lining in a pipeline, which method comprises the steps of
- (a) forming on the inner surface of the pipeline a film of initiator,
- (b) depositing on the inner surface of the film of initiator produced in accordance with step (a) a layer of resin whereupon accelerated curing of the resin takes place,
- (c) repeating steps (a) and (b) any desired number of times until a cured lining of the desired thickness has been built up on the interior of the pipeline.
Dependencies are inferred from the claim text.