Composite pipe having a ptfe inner layer and a covering...

Details Composite pipe having a ptfe inner layer and a covering... Composite pipe having a ptfe inner layer and a covering...

B - Operations, Transporting

32

B

B32B 27/30 (2006.01) B29C 70/08 (2006.01) B32B 1/08 (2006.01) F16L 9/12 (2006.01) F16L 9/14 (2006.01) B29C 35/04 (2006.01) B29C 63/00 (2006.01) B29C 63/06 (2006.01)

Patent

CA 2417044

Disclosed is a composite pipe comprising polytetrafluoroethylene (PTFE) inner layer and a covering layer of fibre-reinforced plastics material, which are joined to one another by force locking and form locking via an intermediate layer. To improve the adhesive and shear strength between the PTFE inner layer and the covering layer, the intermediate layer comprises a perfluoroalkoxytetrafluoroethylene (PFA) layer and a layer of fibres of glass or carbon. The PFA layer is adjacent to the PTFE inner layer and the layer of fibres of glass or carbon is adjacent to the covering layer. The composite pipe is useful for transporting liquids or gases, in particular in the chemical industry.

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