Process for the adjustment of the glass temperature in a float g

Details Process for the adjustment of the glass temperature in a float g Process for the adjustment of the glass temperature in a float g

1980-05-15

1981-12-01

Kellogg, Arthur D.

Glass manufacturing

Processes

Forming product or preform from molten glass

65118, 651823, 651824, 65350, 432 11, 432 31, C03B 2504

Patent

active

043034373

ABSTRACT:
A method and an apparatus for the heat treatment of a float glass ribbon in which a tunnel lehr is provided with arrays of parallel heat-exchange tubes above and below the path of the ribbon and for each of the longitudinally divided zones of these arrays, the tubes are grouped and provided with respective heaters at the upstream end of the zone while all of the tubes at the zone are connected to a flow at the downstream end for drawing the heated air through the tubes. The temperature of the glass ribbon is measured at the upstream end and the throughflow of the individual groups is controlled selectively to ensure a homogeneous temperature distribution in the glass ribbon.

REFERENCES:
patent: 1846566 (1932-02-01), Mulholland
patent: 1852526 (1932-04-01), Kemp
patent: 3661548 (1972-05-01), Ito et al.

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