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Coated metal tubing arrangement used in, e.g. automobile brake lines, comprises metal tubing, first polymeric layer and second foamed polymeric layer made from chemically similar polymeric material
Coated metal tubing arrangement used in, e.g. automobile brake lines, comprises metal tubing, first polymeric layer and second foamed polymeric layer made from chemically similar polymeric material
A coated metal tubing arrangement comprises a metal tube (10), a first polymeric layer (12), and a second polymeric layer (14) having a foamed structure and located radially outwardly of the first layer. The first and second polymeric materials are similar. An Independent claim is included for a method for forming the inventive coated tubing arrangement comprising providing a metal tube, providing a first polymeric material, extruding the polymeric material onto the tubing, providing a second polymeric material, co-extruding the second polymeric material onto the first polymeric material and expanding the second polymeric material to form a foamed structure.
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