Device for the manufacture of flat glass sheet with improved characteristics
AssigneeSocieta Italiana Vetro - SIV - S.p.A.
InventorsJean Claude Marique, Pier Paolo Boattini
Life of this patent
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Abstract
A flat glass sheet is formed using the float process. Before annealing of glass carried on rollers, the glass is conveyed by a fluid bed formed by a mixture of gasses, in order to cool the glass to approximately 600.degree. C. before it reaches an annealing lehr.
Claims14
A device for the manufacture of a flat glass sheet, said device including a molten tin bath stage for forming a glass sheet strip, an annealing lehr having rollers for conveying the glass sheet strip from said molten tin bath stage in a direction of travel, and a fluid bed between said molten tin bath stage and said annealing lehr for pre-cooling the glass sheet strip while supporting the glass sheet strip, said fluid bed comprising:
- a first, upstream fluid bed section and a second, downstream fluid bed section, relative to said direction of travel;
- and
- means for supplying a first gas stream mixture to said first section and a second gas stream mixture to said second section from respective first and second supplies that are separate and not in direct fluid communication.
Dependencies are inferred from the claim text.