Glass sheet is formed by measuring a quantity of fluid glass into a travelling mould, where it is spread and shaped by gravity and surface tensions. The surface is then levelled, fire polished, and cooled on a bath of molten metal in a series of compartments or zones, under controlled temperatures.
Origin
Unknown
Journal Title
(U.S.P 3 512 950, 19.5.70)
Sector
Primary Papers
Class
PP 280