Method for heating and forming a glass sheet

Glass manufacturing – Processes – Reshaping or surface deformation of glass preform

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Details

65104, 65111, 65114, 219678, 219680, C03B 2302

Patent

active

056560532

ABSTRACT:
A method for heating and forming a glass sheet includes the steps of heating a glass sheet to at least a first predetermined temperature, applying microwave energy to the glass sheet to heat the glass sheet to at least a second predetermined temperature, cooling an outer surface of the glass sheet to at least a third predetermined temperature and forming the glass sheet using forming rollers to a predetermined configuration.

REFERENCES:
patent: 2145119 (1939-01-01), Littleton
patent: 2178520 (1939-10-01), Howard
patent: 3406022 (1968-10-01), Gehenot
patent: 3875766 (1975-04-01), French
patent: 3938980 (1976-02-01), French
patent: 4226608 (1980-10-01), McKelvey
patent: 4606748 (1986-08-01), Blake et al.
patent: 4773925 (1988-09-01), Schultz
patent: 4838915 (1989-06-01), Hassler
patent: 5306324 (1994-04-01), Vehmas et al.
patent: 5324345 (1994-06-01), Rutjes et al.
patent: 5352263 (1994-10-01), Kuster et al.
Robert Gardon, "The Tempering of Flat Glass By Forced Convection", pp. 1-33.
Robert Gardon, "Calculation of Temperature Distributions in Glass Plates Undergoing Heat-Treatment", Jun. 1958, pp. 200-209.

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