Method of producing glass blank

Details Method of producing glass blank Method of producing glass blank

1992-03-26

1994-06-21

Woodard, Joye L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 75, 65 76, 65 78, 65 85, 65127, C03B 1100

Patent

active

053225414

ABSTRACT:
A method of producing a glass blank, comprising the steps of: supplying a desired weight of molten glass material to a bearer heated to a temperature of not more than a softening point of the glass material; performing and cancelling, at a temperature of not less than the softening point, pressing of the glass material supplied to the bearer so as to adjust a thickness of the glass material; and cooling the glass material to a temperature of not more than the softening point.

REFERENCES:
patent: 2359433 (1944-10-01), McNamara
patent: 3293017 (1966-12-01), Jenkins
patent: 3930819 (1976-01-01), Martin
patent: 4457771 (1984-07-01), Ambrogi
patent: 5087279 (1992-02-01), Monji et al.
Minolta Camera Co., Patent Abstracts of Japan, vol. 15, No. 345 (C864), Sep. 3, 1991 JP-A-3137030.

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