Manufacture of drawn sheet glass

Details Manufacture of drawn sheet glass Manufacture of drawn sheet glass

1985-12-02

1987-04-07

Kellogg, Arthur

Stock material or miscellaneous articles

Composite

Of quartz or glass

65 90, 65 95, 65196, 65205, C03B 1506

Patent

active

046560963

ABSTRACT:
Molten glass 1 flows continuously from a glass melting furnace 2 to a drawing tank 7 whence the glass is drawn as a continuous ribbon 10 from a slot 11 in a refractory device 12 such as a debiteuse partially immersed in the molten glass.
The center of the slot 11 is spaced from each of upstream 6 and downstream 9 end walls of the drawing tank 7 by at least 550 mm. The debiteuse 12 is preferably spaced from those walls by at least 350 mm.
This promotes and facilitates production of a high yield of glass of a high standard of thickness uniformity and of good planeity.
These advantages are enhanced when the ribbon is passed over a bending roll 13 in a drawing chamber 8 above the drawing tank 7 and thence to a horizontal annealing lehr 14.

REFERENCES:
patent: 1556726 (1925-10-01), Slingluff
patent: 1645053 (1927-10-01), Howard
patent: 1860044 (1932-05-01), Mambourg
patent: 3523776 (1970-08-01), McMaster
Glass Machines, Construction & Operation of Machines for the Forming of Hot Glass, Giegerich et al., pp. 342-361, Springer--Verlag, New York, 1969, (cited by applicant).
Rev. Constructulor Materialetor Constructu--vol. 20, No. 4, 1968--cited by applicant.

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