Glass manufacturing – Processes – Forming and fire polishing or product
Patent
1974-10-15
1976-01-13
Kellogg, Arthur D.
Glass manufacturing
Processes
Forming and fire polishing or product
65 99A, 65182R, 65337, C03B 1802
Patent
active
039321657
ABSTRACT:
A layer of molten glass is discharged from a pool of molten glass in a glassmaking furnace and delivered along a substantially horizontal path onto a pool of molten metal in a forming chamber; the glass is then advanced along the surface of the pool of molten metal while being cooled to form a continuous sheet of glass. Prior to discharge and delivery, the molten glass is conditioned to establish an accelerated flow of molten glass in the direction of its delivery. The glass is conditioned by selectively cooling the glass at different depths in the pool of molten glass across the width of the delivery path just prior to delivery to preferentially decelerate the flow of hotter, less viscous glass at one location in the pool of molten glass relative to the flow of cooler, more viscous glass at another location in the pool. In this way the molten glass is caused to uniformly flow into a region for discharge from the pool and delivery for forming.
REFERENCES:
patent: 2921106 (1960-01-01), Arbeit
patent: 3658505 (1972-04-01), Kunkle
patent: 3843346 (1974-10-01), Edge et al.
Edge Charles K.
Kunkle Gerald E.
Kellogg Arthur D.
Pollock E. Kears
PPG Industries Inc.
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