UN METODO DE PRODUCIR VIDRIO DE FLOTACION CON ESPESOR MENOR QUE EL DE EQUILIBRIO.

摘要

A continuous ribbon of glass (6) is reduced in thickness while supported on molten metal (16) by imposing superatmospheric pressure over a molten glass layer (6) in a chamber (25) where the glass (6) is maintained in contact with the side walls (26) of the chamber (25). One aspect features metering the glass layer (6) into the pressure chamber (25) at substantially full width. Another aspect involves pressure sizing the glass layer (6) at temperatures above (2100 DEG F.) 1150 DEG C. . Yet another aspect includes widening the glass ribbon (6) following pressure sizing.