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US 9,791,088 B2Granted
Lining element for the rehabilitation of a pipeline
AssigneeTrelleborg Pipe Seals Duisburg GmbH
InventorAndreas Bichler
Life of this patent
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Abstract
A lining element for the rehabilitation of a pipeline, the lining element having a substrate layer including a resin-absorbing material and a coating system, the coating system including a fluid-tight barrier layer system formed from several layers.
Claims15
A lining element for the rehabilitation of a pipeline, the lining element comprising, in a state prior to installation of the lining element in a pipeline to be rehabilitated:
- (a) a substrate layer in the form of a continuous layer of a resin-absorbing material, the substrate layer defining an outside surface of the lining element for contacting an interior surface of a pipeline to be rehabilitated;
- and
- (b) a coating system including a fluid-tight barrier bonded to the substrate layer and formed of at least two adjacent, fluid-tight barrier layers, and the coating system further including at least one anti-friction layer adjacent the fluid-tight barrier, the anti-friction layer defining an interior surface of the lining element for facing toward the inside of the pipeline to be rehabilitated;
- wherein, in an installed state of the lining element in which the lining element is bonded to the interior surface of the pipeline to be rehabilitated, the at least one anti-friction layer remains part of the coating system so as to define a protective layer against substances transported in the pipeline.
1 more element
Dependencies are inferred from the claim text.