Methods and apparatuses for fabricating continuous glass ribbons
First Claim
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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Abstract
Methods and apparatuses for fabricating continuous glass ribbons are disclosed. The method includes forming the continuous glass ribbon by drawing the continuous glass ribbon from a draw housing in a drawing direction, heating at least one portion of a central region of the continuous glass ribbon at a heating location downstream of the draw housing, sensing a temperature of the continuous glass ribbon at a sensed temperature location downstream of the draw housing, and automatically controlling the heating of the at least one portion of the central region of the continuous glass ribbon based on the sensed temperature to mitigate distortion of the continuous glass ribbon.
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Citations
11 Claims
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1. A method for fabricating a continuous glass ribbon, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for fabricating a continuous glass ribbon, the method comprising:
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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; sensing a shape of the continuous glass ribbon at a sensed shape 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 and the sensed shape 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 and the sensed shape to mitigate distortion of the continuous glass ribbon. - View Dependent Claims (11)
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Specification