METHOD FOR MANUFACTURING GLASS SHEET
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United States of America Patent
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Mar 24, 2016
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Sep 25, 2013
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Abstract
The present invention relates to a method for manufacturing a float glass containing a step of melting a glass raw material, a step of forming the glass melted by the preceding step into a glass ribbon while floating the glass on a molten metal, and a step of annealing the glass ribbon. In the forming step, a fluid containing a molecule having a fluorine atom is sprayed onto the glass ribbon to control a fluorine amount in the depth of up to 30 μm in the thickness direction from the upper surface of the glass ribbon to more than 0.23 mol %·μm.
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