Thermal toughening of glass
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United States of America Patent
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-
Jun 3, 1980
Grant Date -
N/A
app pub date -
Dec 5, 1978
filing date -
Dec 9, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A glass sheet is thermally toughened by heating the sheet to a temperature near to its softening point and then lowering the sheet into a gas-fluidized bed of particulate material. A void region is established beneath the lower edge of the sheet as it is initially immersed in the fluidized bed.
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