Glass manufacturing – Processes – Forming product or preform from molten glass
Reexamination Certificate
2007-06-19
2007-06-19
Griffin, Steven P. (Department: 1731)
Glass manufacturing
Processes
Forming product or preform from molten glass
C065S094000
Reexamination Certificate
active
10902306
ABSTRACT:
The present invention relates to a process for manufacturing flat sheets of a glass-based material and to an apparatus therefor. The process comprises providing a glass preform, heating the glass preform in a furnace, forming a gob and a pre-sheet, removing the gob and drawing the glass pre-sheet into a flat glass sheet. Also provided is an apparatus for drawing a glass preform into a glass sheet, the apparatus comprising a draw furnace, stretching arms for stretching and drawing the pre-sheet into a glass sheet, and opposing edge rollers for applying a downward force on the glass sheet. The draw furnace may include a plurality of individual heating elements, the temperature of each heating element capable of being separately controlled. The apparatus may further include an annealing furnace for annealing the glass sheet.
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Cimo Patrick J
Murtagh Michael T
Powley Mark L
Able Kevin M
Corning Incorporated
Dehghan Queenie
Griffin Steven P.
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