Glass manufacturing – Processes – Forming product or preform from molten glass
65 90, 65196, 65204, C03B 1506
Molten glass 1 flows continuously from a glass melting furnace 2 to a drawing tank 7 when the glass is drawn as a continuous ribbon 10 and is passed over a bending roll 13 in a drawing chamber 8 above the tank 7 and then to a horizontal annealing lehr 14.
A high yield of glass, especially thin glass, of a high standard of thickness uniformity and good planeity is promoted and facilitated by causing the molten glass 1 to flow upwardly through a slot 11 in a refractory device 12 partially immersed in molten glass in a deep drawing tank.
patent: 1556726 (1925-10-01), Slingluff
patent: 1645053 (1927-10-01), Howard
patent: 1860044 (1932-05-01), Mambourg
Tooley, Handbook of Glass Manufacture, vol. 2, Ogden, 1960, p. 242.
Glass Machines, pp. 342-361, Giegerich et al, Springer & Verlag, N.Y., N.Y, 1969.
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