Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Patent
1979-01-02
1980-07-15
Kellogg, Arthur D.
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
65104, C03B 2302
Patent
active
042126622
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.
REFERENCES:
patent: 3245772 (1966-04-01), Cypher et al.
patent: 3396000 (1968-08-01), Carson et al.
patent: 3522029 (1970-07-01), Carson et al.
patent: 3880635 (1975-04-01), Jack et al.
Brereton Paul A.
Challis Roger
Kellogg Arthur D.
Triplex Safety Glass Company Limited
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