C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/47, 49/89
C03B 27/04 (2006.01) C03B 27/044 (2006.01)
Patent
CA 1332671
GLASS TEMPERING ABSTRACT An improved glass tempering apparatus and method is disclosed. A glass sheet is quenched by heating the glass sheet and horizontally transferring the sheet on a roller conveyor into a quenching station having an upper and lower rate of nozzles for directing coolant on opposite sides of the glass. A first array of points on the glass sheet are cooled, then the glass is horizontally jogged within the quenching station and a second array of points are cooled. Preferably, the jog distance is selected so that the first and second rate of points are uniformly spaced relative to one another. An alternative embodiment of the invention cools a first array of points, horizontally jogs the glass within the quenching station and recools the same array of points with each point being cooled by a different nozzle pair so that the cooled points are uniformly sized and clearly defined with minimum irregularities resulting from roller shrouding and nozzle-to-nozzle variability.
615489
Glasstech International L.p.
Macrae & Co.
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