C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 1/00 (2006.01) C03B 3/00 (2006.01) C03B 5/173 (2006.01) C03B 5/182 (2006.01) C03B 5/193 (2006.01) C03B 5/26 (2006.01) C03B 7/02 (2006.01) C03B 7/06 (2006.01) C03B 7/092 (2006.01)
Patent
CA 2110752
The present invention relates generally to the manufacture of glass and, more particularly, to the high volume production of glass containers wherein both colored glass and clear glass containers may be produced simultaneously. Heretofore, it has been common to either dedicate an entire glass melting furnace to the production of colored glass or to treat clear glass produced by a melting furnace by adding a color concentrate upstream of the glass forming machine in a forehearth region. Such known forehearth coloring technology has several shortcomings, the more notable being the limitation on glass throughput; the high raw material cost of color concentrates; as well as the high maintenance costs and associated downtime of the mechanical color stirrers. In addition, certain color additions requiring longer dwell times or higher melting temperatures, such as that required for producing amber colored glass, for example, cannot be produced by the forehearth coloring technique. In prior attempts to increase throughput and production flexibility of colored glass, it has been proposed to utilize a so-called "color cell". The prior color cell employed a vertical flow-through refractory structure which diverted clear glass flow from a melting furnace. Color concentrates were added along with colored cullet and melted in an electrically heated zone within the color cell.
Argent Ronald D.
Bolin James A.
Argent Ronald D.
Blake Cassels & Graydon Llp
Bolin James A.
Liberty Glass Company
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