Cold-formable composite pipe

Details Cold-formable composite pipe Cold-formable composite pipe

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 9/147 (2006.01) B29C 47/02 (2006.01)

Patent

CA 2182996

Composite pipe (20) of the type comprising an inner tube (2) made of a first thermoplastic material (A), a reinforcement (21), comprising a metal strip (3) which is bonded to the inner tube by a first adhesive (61) compatible with the first thermoplastic material, an outer sheath (4) of a second thermoplastic material (B), which is bonded to the renforcement (21) by a second adhesive (62) compatible with the second thermoplastic material. According to the invention, the two materials A and B are chemically different and, in the joining area (22) between the oppositely facing strips (61a, 62a), of the first and second adhesive, the two strips are coherently linked by coupling means. In an embodiment, the coupling means consist of different adhesives which are compatible and cross-linkable with one another.

Ce conduit composite (20) est du type comprenant un tube interne (2) en un premier matériau thermoplastique (A), une armature de renfort (21), comprenant un ruban métallique (3) lié au tube interne par un premier adhésif (61) compatible avec le premier matériau thermoplastique, une gaine externe (4) en un second matériau thermoplastique (B), liée à l'armature de renfort (21) par un deuxième adhésif (62) compatible avec le deuxième matériau thermoplastique. Selon l'invention les deux matériaux A et B ont des natures chimiques différentes, et, dans la zone de raccordement (22) entre les bandes en vis-à-vis (61a, 62a) respectivement, du premier et du second adhésif, un moyen de liaison relie de manière cohérente ces deux bandes. Dans une forme d'exécution, ce moyen de liaison est constitué par des adhésifs différents mais compatibles et co-réticulables entre eux.

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