METHOD OF PRODUCING FLAT GLASS

摘要

Supply method of a molten-state glass ribbon supplied from a glass-melting furnace to a flat glass forming apparatus is improved, and flat glass after the formation has better smoothness. A glass ribbon (13) supplied from a glass-melting furnace (14) to a glass forming apparatus (15) is passed over a pair of tension rollers (24A, 24B) in a letter S shape, and the tension rollers (24A, 24B) are rotated with surface pressure being applied to the surface of the glass ribbon (13) through a thin layer of a steam film formed of an evaporated steam film-forming agent. By the rotation of the tension rollers (24A, 24B), the surface of the glass ribbon (13) still in a molten state is polished through a steam film (18).