Abrasion resistant coated tube
AssigneeCooper-Standard Automotive Inc.
InventorsBrian J. Cardwell, Thomas Breuer
Life of this patent
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Abstract
A coated metal pipe for use as an automotive fluid transport tube is provided comprising: a single or double walled tubing formed into a circular cross-sectional profile; at least one intermediate layer primer layer applied over said tubing: and an outer layer comprising a polyamide incorporating an immiscible additive. The immiscible additive is selected from Ultra High Molecular Weight (UHMW) silicones, UHMW polyethylene (UHMW-PE), polytetrafluoroethylene (PTFE) and mixtures thereof.
Claims16
A coated metal pipe for use as an automotive fluid transport tube comprising:
- a single or double walled tubing formed into a circular cross-sectional profile;
- at least one intermediate layer primer layer applied over said tubing;
- and
- an outer layer comprising a polyamide incorporating an immiscible additive selected from Ultra High Molecular Weight (UHMW) silicones and UHMW polyethylene (UHMW-PE).
A coated metal pipe for use as an automotive fluid transport tube, comprising:
- a copper plated carbon steel tubing formed into a circular cross-sectional profile;
- at least one intermediate primer layer including a corrosion inhibiting alloy applied over said tubing;
- and
- an outer polyamide layer applied over said intermediate layer, said outer layer compounded with an immiscible additive is selected from Ultra High Molecular Weight (UHMW) silicones, and UHMW polyethylene (UHMW-PE), and mixtures thereof at 1-15% by weight.
A method for manufacturing a coated metal pipe for use as an automotive fluid transport tube, comprising the steps of:
- forming a copper plated carbon steel into a tubing exhibiting a circular cross-sectional profile;
- forming at least one intermediate primer layer including a corrosion inhibiting zinc/aluminum alloy applied over the tubing;
- and
- forming an outer polyamide layer applied over the intermediate layer, the outer layer compounded with an immiscible additive selected from Ultra High Molecular Weight (UHMW) silicones and UHMW polyethylene (UHMW-PE) at 1-15% by weight.
Dependencies are inferred from the claim text.