Glass manufacturing – Processes – Devitrifying glass or vitrifying crystalline glass
Patent
1998-04-17
2000-02-08
Silverman, Stanley S.
Glass manufacturing
Processes
Devitrifying glass or vitrifying crystalline glass
65 336, 65 34, 65 36, 65 42, 65 43, 65111, 65155, C03C 800
Patent
active
060216484
ABSTRACT:
A flat glass panel 1 for a picture display device of the flat type, is formed by two glass cover plates (3, 5) with at least one glass plate (4, 4', 4", . . . ) between them, and a vitreous frit (8) between the cover plates along the outer edges of the cover plates so as to obtain a box-type glass panel in which a channel structure is present. After heating to the melting temperature of the frit (8), the panel is cooled down to a transitional temperature of the frit, while the space between the cover plates is partly exhausted during the cooling-down phase at a temperature which lies between the melting temperature and the transitional temperature of the frit. Then the temperature is kept constant at approximately the transitional temperature until the frit has become undeformable, said space (13) between the cover plates (3, 5) being fully evacuated then. Finally, cooling-down continues to room temperature, and the space (13) inside the panel is hermetically sealed off.
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Brinkert Jacob
Van Voorst Vader Pieter J. Q.
Zonneveld Maarten H.
Colaianni Michael P.
Faller F. Brice
Silverman Stanley S.
U. S. Philips Corporation
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