Method for producing glass sheet, and glass sheet

• Main Authors: Koyo, Hirotaka, Mitani, Kazuishi, Tsuri, Keiko, Tanaka, Satoshi, Saito, Yasuhiro
• Format: Patent
• Language: English
• Published: 23.07.2019
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; EQUIPMENT FOR SHIPPING; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING

The glass sheet production method of the present invention is a method for producing a surface-modified glass sheet, including a gas contact step of bringing hydrogen fluoride (HF) gas, hydrogen chloride (HCl) gas, and water vapor into contact with at least one principal surface of a glass sheet. A gas containing the hydrogen fluoride (HF) gas is used in the gas contact step, and in the gas containing the hydrogen fluoride (HF) gas, a volume ratio of the water vapor to the hydrogen fluoride (HF) gas (volume of water vapor/volume of HF gas) is 8 or more.