Lining ducts

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 63/34 (2006.01) F16L 55/165 (2006.01)

Patent

CA 2422570

Apparatus for converting a flexible liner 2 including a layer 3 of composite material comprising thermoplastics material and reinforcing fibres, into a structural member within a duct 1, has a front portion 6 for insertion in the liner 2, a central portion 7 for heating one side of the layer 3 and a rear portion 20 which forces the heated layer 3 against the duct 1 for consolidation and cooling under pressure. The central portion 7 has heating means 8 producing hot gas which is forced under pressure through the layer 3 of composite material to heat the layer 3, and provides an air gap 14 on the opposite side of the layer 3 while heating takes place. This ensures uniform heating of the layer 3, to melt the thermoplastics material which then mixes intimately with the reinforcing fibres, and is consolidated and cooled to form the structural member.

Appareil permettant de transformer un manchon flexible (2) comprenant une couche (3) d'un matériau composite renfermant une matière thermoplastique et des fibres de renforcement, en un élément de construction à l'intérieur d'un conduit (1), présentant une partie avant (6) pour l'insertion dans le manchon (2), une partie centrale (7) pour le chauffage d'un côté de la couche (3) et une partie arrière (20) poussant la couche chauffée (3) à l'encontre du conduit (1) en vue de la consolidation et du refroidissement sous pression. La partie centrale (7) présente des moyens de chauffage (8) générant un gaz chaud qui est poussé sous pression à travers la couche (3) du matériau composite de manière à chauffer ladite couche (3), tout en ménageant un intervalle d'air (14) sur le côté opposé de la couche (3) pendant que le chauffage a lieu. Ceci assure un chauffage uniforme de la couche (3) permettant de fondre la matière thermoplastique qui est ensuite mélangée intimement avec les fibres de renforcement et est consolidée et refroidie pour former l'élément de construction.

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