Method of heating glass sheets for conveying
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United States of America Patent
Stats
-
Jul 15, 1980
Grant Date -
N/A
app pub date -
Jan 2, 1979
filing date -
Jan 12, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a method of heating a glass sheet which is moved on a conveyor which contacts one face of the sheet, anticlastic bending of the sheet is caused, and the stable anticlastic shape of the sheet is determined such that the sheet is arched away from the conveyor transversely of the sheet with respect to the conveying direction and with the sheet having a reverse curvature along its longitudinal extent so that the leading and trailing edges of the sheet are bent away from the conveyor. This reduces the contact between the contacted surface of each glass sheet and keeps the leading edge of each sheet clear of the conveyor. Anticlastic bending of the sheet is caused by producing a temperature differential between the central area and at least a part of the periphery of the sheet, for example, by heating said part of the periphery.
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