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Methods and apparatuses for fabricating continuous glass ribbons

  • US 9,315,408 B2
  • Filed: 11/16/2012
  • Issued: 04/19/2016
  • Est. Priority Date: 11/16/2012
  • Status: Expired due to Fees
First Claim
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1. A method for fabricating a continuous glass ribbon, the method comprising:

  • forming the continuous glass ribbon by drawing the continuous glass ribbon from a draw housing in a drawing direction, wherein the continuous glass ribbon comprises a central region, a first bead portion, and a first near bead region laterally positioned between the first bead portion and the central region, wherein the central region comprises a first lateral region and a second lateral region;

    heating the first lateral region of the central region and the second lateral region of the central region at a heating location downstream of the draw housing;

    sensing a first near bead temperature within the first near bead region, sensing a first lateral region temperature within the first lateral region of the central region, and sensing a second lateral region temperature within the second lateral region of the central region at a sensed temperature location downstream of the draw housing;

    controlling, automatically, the heating of the first lateral region of the central region of the continuous glass ribbon based on a first temperature difference between the first near bead temperature and the first lateral region temperature to mitigate distortion of the continuous glass ribbon; and

    controlling, automatically, the heating of the second lateral region of the central region of the continuous glass ribbon based on a second temperature difference between the first near bead temperature and the second lateral region temperature to mitigate distortion of the continuous glass ribbon.

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