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Electrically conductive elastic composite yarn, methods for making the same, and articles incorporating the same

  • US 7,926,254 B2
  • Filed: 02/05/2009
  • Issued: 04/19/2011
  • Est. Priority Date: 04/25/2003
  • Status: Active Grant
First Claim
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1. A method for forming an electrically conductive elastic composite yarn comprising:

  • an elastic member having a relaxed length (L);

    at least one conductive covering filament surrounding the elastic member, and at least one inelastic synthetic polymer yarn surrounding the elastic member, wherein the conductive covering filament has a length, and the inelastic synthetic polymer yarn has a length that is shorter than the length of the conductive covering filament;

    the method comprising the steps of;

    drafting the elastic member to a drafted length N×

    L where N is from about 1.2 to about 8.0;

    twisting the conductive covering filament and the inelastic synthetic polymer yarn with the drafted elastic member; and

    thereafterallowing the elastic member to relax.

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