METHOD FOR PRODUCING GLASS SHEET AND GLASS SHEET

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MITANI, Kazuishi, FUKUSHIMA, Kiyomi, TANAKA, Satoshi, SAITO, Yasuhiro
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung: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.