Multilayer plastic pipe

Details Multilayer plastic pipe Multilayer plastic pipe

B - Operations, Transporting

32

B

B32B 1/08 (2006.01) B32B 27/08 (2006.01) F16L 9/133 (2006.01) F16L 11/20 (2006.01)

Patent

CA 2114506

Abstract: Multilayer Plastic pipe A multilayer plastic pipe is disclosed. The pipe comprises an outer layer I made from a moulding composition based on a polyamide and a layer II adjacent to the outer layer. Layer II comprises a plasticiser-free polyvinylidene fluoride having a melt flow index of less than 14 g/10 min, measured in accordance with DIN 53 735 at 230°C and a load of 5 kg. The ratio of the thickness of layer II and the combined thickness of layer I and II 18 from 1-3 to 1:20. The multilayer pipe according to the invention has an extremely good resistance to and a good barrier action to diffusion by (petro)chemical substances, solvents and fuels, even at elevated temperatures. It is preferably used for the transport of (petro)chemical substances, for example in the motor transport sector, for carrying brake, cooling and hydraulic fluids and fuel.

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