Process for producing flat glass, apparatus for forming buffer layer of flat glass, and flat glass producing equipment

• Main Authors: TANII, SHIROU, IGA, MOTOICHI
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2009
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A process for producing a flat glass, apparatus for forming a buffer layer of flat glass and flat glass producing equipment that realize inhibition of flaw occurrence in place of conventional SO2-using buffer layer forming means. The process for producing a flat glass is one including the forming step of forming glass ribbon (6) while continuously supplying molten glass (5) onto horizontal bath surface (1b) of molten metal bathtub (1) accommodating a molten metal and the slow cooling step of conveying the glass ribbon (6) through slow cooling furnace (3) to thereby effect slow cooling, characterized in that as a step posterior to the forming step, the glass ribbon (6) at its inferior surface (6a) is provided with a buffer layer of flaw occurrence preventing agent.