Toneable conduit and method of preparing same

  • US 7,820,090 B2
  • Filed: 04/23/2004
  • Issued: 10/26/2010
  • Est. Priority Date: 11/20/2001
  • Status: Active Grant
First Claim
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1. A method of making toneable conduit, comprising:

  • advancing a continuous electrically conductive wire; and

    extruding a polymer melt around the advancing wire in the form of an elongate polymeric tube having a wall with an interior surface and an exterior surface such that the wire is embedded in the wall of the elongate polymeric tube;

    wherein the continuous wire is coated with a coating composition that prevents the wire from adhering to the polymer melt used in said extruding step.

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