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Micro heating apparatus for synthetic fibers

  • US 6,180,950 B1
  • Filed: 07/11/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 05/14/1996
  • Status: Expired due to Term
First Claim
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1. An improved apparatus for non-contact quantum mechanical heating of a thermoplastic fiber by resonant energy absorption of laser energy by the fiber, the apparatus comprising in combination:

  • a) means for illuminating at least one thermal plastic fiber with an intense light source from a carbon monoxide continuous wave laser beam of resonant frequency for the prescribed fiber being treated;

    said means comprising a microheater cell having an internal reflective coating which is wave-length dependent on the laser beam;

    b) means for traversing the fiber to be treated across the path of the laser beam in a direction perpendicular to the beam of radiation from the laser source; and

    c) means for adjusting the rate of traversement of the fiber to maintain the temperature of the thermoplastic fiber within a temperature range of about five percent below the melting point of the thermoplastic fiber to continuously heat the fiber by resonant energy absorption of the laser beam.

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