Flexible coolant conduit and method of making same

Details Flexible coolant conduit and method of making same Flexible coolant conduit and method of making same

1996-02-02

1998-12-22

Ferensic, Denise L.

Pipes and tubular conduits

Flexible

Distinct layers

138141, 138121, 138DIG7, F16L 918

Patent

active

058508554

ABSTRACT:
A flexible conduit for coolant having a high bursting pressure above 8 bar at 100.degree. C. and high hydrolysis resistance comprising an outer layer of a material selected from the group consisting of homopolyamides, copolyamides and mixtures thereof with an excess of amino terminal groups, a non-swelling inner layer made of a material selected from the group consisting of non-halogenated copolyolefins, non-halogenated homopolyolefins and mixtures thereof and a middle layer compatible with the inner and outer layers made of a homopolyolefin or a copolyolefin with grafted functional groups, the layers being coextruded and corrugated during coextrusion.

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