METHOD AND APPARATUS FOR PRODUCING GLASS SHEET

摘要

A glass sheet is produced by a downdraw process in which molten glass is fused at a lower end 4e of a glass sheet forming device 4 to form a glass ribbon, and a glass ribbon 9 is conveyed downwardly along a plurality of rolls 6 disposed below the glass sheet forming device 4. Heaters 8 each are provided in a space between the lower end 4e of the glass sheet forming device 4 and the rolls 6a located nearest to the glass sheet forming device 4. The glass ribbon 9 is formed and conveyed while the edge portions of the glass ribbon 9 immediately after the fusion are locally heated by the heaters 8. Selected figure: