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AssigneeTristone Flowtech Solutions (Tfs)
InventorsDominique SAINT-LARY, Francois LE BRIQUER
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A motor vehicle cooling fluid flow pipe, such as an engine cooling fluid pipe, characterized in that the wall of the pipe is constituted by a single layer made of a polymer material comprising a mixture of at least two polymer materials of different natures, one of which, referred to as a first material, being a polyolefin, and the other of which, referred to as a second material, being a thermoplastic polymer elastomer (TPE). The method of manufacturing this pipe comprises an operation of mixing at least the polyolefin and the thermoplastic polymer elastomer (TPE), a step of extruding said mixture in a screw extruder followed by a step of forming the pipe, the operation of mixing the polyolefin and the thermoplastic polymer elastomer (TPE) being performed upstream from the extruder or at its inlet.
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A motor vehicle cooling fluid flow pipe, such as an engine cooling fluid pipe, characterized in that the wall of the pipe is constituted by a single layer made of a polymer material comprising a mixture of at least two polymer materials of different natures, one of which, referred to as a first material, being a polyolefin, and the other of which, referred to as a second material, being a vulcanized polyolefin-based thermoplastic polymer elastomer (TPV), and in that the polymer material has a polyolefin content lying in the range 30% to 70% by weight.
The use of a fluid flow pipe according to claim 1, as a cooling fluid pipe for a fuel-burning engine, an electric motor, an electrical converter, or a vehicle battery.
Dependencies are inferred from the claim text.