Methods for controlling the thickness wedge in a glass ribbon
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United States of America Patent
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Jan 31, 2017
Grant Date -
Mar 24, 2016
app pub date -
Sep 22, 2014
filing date -
Sep 22, 2014
priority date (Note) -
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Abstract
A method for controlling wedge variation in a glass ribbon includes flowing molten glass over converging sides of a forming vessel, drawing a glass ribbon from a root of the forming vessel, measuring the wedge variation over at least a portion of the width of the glass ribbon, adjusting a tilt of the forming vessel and a temperature near a weir of the forming vessel based on the measured wedge variation to decrease the wedge variation over the width of the glass ribbon, and re-measuring the wedge variation over the portion of the width of the glass ribbon.
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