Multilayer plastic pipe and its use

Details Multilayer plastic pipe and its use Multilayer plastic pipe and its use

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 9/12 (2006.01) F16L 33/01 (2006.01)

Patent

CA 2323555

The invention relates to a multilayer plastic pipe (1), preferably for use in heating systems. The multilayer pipe comprises an inner core (2) and a barrier layer (6) surrounding the core and preventing oxygen diffusion through the multilayered pipe. The core (2) is made of a material having viscoelastic properties, preferably cross-linked polyethylene, and the barrier layer (6) is surrounded by an outer layer (8) of a material having adhesive properties. The invention also relates to the use of a multilayer pipe for providing pipe couplings.

Cette invention se rapporte à un tuyau en plastique multicouche (1), conçu de préférence pour servir dans les systèmes de chauffage. Ce tuyau multicouche comprend une âme interne (2) et une couche barrière (6) entourant l'âme et empêchant la diffusion de l'oxygène à travers le tuyau multicouche. L'âme (2) est fabriquée en un matériau ayant des propriétés viscoélastiques, telles que de préférence du polyéthylène réticulé, et la couche barrière (6) est entourée par une couche externe (8) d'un matériau ayant des propriétés adhésives. Cette invention se rapporte également à l'utilisation d'un tel tuyau multicouche pour produire des raccords de tuyau.

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