Method of lining pipes

Details Method of lining pipes Method of lining pipes

B - Operations, Transporting

29

C

B29C 63/34 (2006.01) C08J 3/24 (2006.01) F16L 55/165 (2006.01)

Patent

CA 2342922

A method of lining a pipeline (3) uses a thermoplastic liner pipe (1) which incorporates a crosslinking agent. The method comprises deforming the round liner pipe (1) into a geometrical shape having a substantially smaller overall dimension, inserting the deformed liner pipe (1) into the existing pipe (3), and reforming theliner pipe (1) to a round shape. Finally, the liner pipe (1) is expanded on to the internal surface of the existing pipe (3), and crosslinked.

L'invention concerne un procédé de revêtement intérieur d'une canalisation (3), le procédé consistant à utiliser un tuyau (1) de revêtement thermoplastique comprenant un agent de réticulation. Le procédé consiste à déformer le tuyau (1) de revêtement arrondi pour lui donner une forme géométrique de dimension générale sensiblement plus réduite, à introduire le tuyau (1) de revêtement déformé dans le tuyau (3) existant, puis à reformer le tuyau (1) de revêtement pour lui redonner une forme ronde. Enfin, le tuyau (1) de revêtement est expansé sur la surface intérieure du tuyau (3) existant, puis réticulé.

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