Apparatus for forming glass sheets with coaxial cavities

Details Apparatus for forming glass sheets with coaxial cavities Apparatus for forming glass sheets with coaxial cavities

1999-01-04

1999-10-26

Silverman, Stanley S.

Glass manufacturing

Rolling means to form sheet or strip

65254, 65255, C03B 1300, C03B 1306

Patent

active

059707470

ABSTRACT:
A glass ceramic or glass-ceramic sheet is formed by progressively reducing the thickness of the sheet by passing the sheet between successive pairs of counter-rotating rollers. The average viscosity of the sheet is maintained between 5.times.10.sup.4 and 10.sup.9 P during the sheet forming operation.

REFERENCES:
patent: 1766680 (1930-06-01), Parham
patent: 1772072 (1930-08-01), Drake
patent: 1818153 (1931-08-01), Nobbe
patent: 2140213 (1938-12-01), Tegarty
patent: 2983026 (1961-05-01), Skalko
patent: 3701644 (1972-10-01), Frank
patent: 4139359 (1979-02-01), Johnson et al.
patent: 5224978 (1993-07-01), Hermant et al.
patent: 5885315 (1999-03-01), Fredholm et al.

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