Method for producing glass sheet and glass sheet
AssigneeNippon Sheet Glass Co., Ltd.
InventorsSatoshi Tanaka, Kiyomi Fukushima, Kazuishi Mitani, Yasuhiro Saito
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Abstract
A method of the present invention for producing glass sheets includes the steps of: (I) forming a molten glass raw material into a glass ribbon on a molten metal; and (II) bringing an acid gas that contains a fluorine element (F)-containing acid and in which a volume ratio of water vapor to the acid (a volume of the water vapor/a volume of the acid) is 0 or more and 30 or less, into contact with a surface of the glass ribbon on the molten metal so as to subject the surface of the glass ribbon to dealkalization and control a morphology of the surface in accordance with the volume ratio.
Claims2
A method for producing glass sheets, comprising steps of:
- (I) forming a molten glass raw material into a glass ribbon on a molten metal;
- and
- (II) bringing an acid gas, in which a volume ratio of water vapor to an acid (a volume of the water vapor/a volume of the acid) is 12.5 or more and 30 or less, into contact with a surface of the glass ribbon on the molten metal at a temperature of 580° C. or more so as to subject the surface of the glass ribbon to dealkalization and control a morphology of the surface in accordance with the volume ratio,
- wherein the acid is a fluorine element (F)-containing acid.
Dependencies are inferred from the claim text.