Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1981-04-02
1982-11-23
Kellogg, Arthur D.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 993, 651825, C03B 1816
Patent
active
043603734
ABSTRACT:
A method of controlling the erosion of a refractory threshold over which molten glass flows transverse to the longitudinal centerline thereof, which includes preferentially cooling the central portion of the threshold while maintaining the marginal edge portions at a temperature above the liquidus temperature of the molten glass. A cooling fluid conduit extending longitudinally through the refractory threshold is thermally insulated adjacent its end portions, thereby localizing the cooling effect towards the central portion of the threshold.
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Kellogg Arthur D.
Millman Dennis G.
Patch Lee
PPG Industries Inc.
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