Glass manufacturing – Processes – Sequentially forming – reheating – and working
Patent
1987-12-11
1989-08-08
Schor, Kenneth M.
Glass manufacturing
Processes
Sequentially forming, reheating, and working
65 85, 65102, 65111, 65275, C03B 1100
Patent
active
048549584
ABSTRACT:
The present invention is directed to a four-step process for molding glass articles of high precision and excellent surface figure. A glass preform having an overall geometry closely approximating that of the desired final product is placed into a mold, the mold and preform are brought to a temperature at which the glass exhibits a viscosity between 10.sup.8 -10.sup.12 poises, a load is applied to shape the glass into conformity with the mold, and thereafter the glass shape is removed from the mold at a temperature above the transformation range of the glass and annealed.
REFERENCES:
patent: 229976 (1880-07-01), Denman
patent: 1332724 (1920-03-01), Hill
patent: 2551311 (1951-05-01), Batchell
patent: 2718106 (1955-12-01), Herman et al.
patent: 3794704 (1974-02-01), Strong
patent: 3900328 (1975-08-01), Parsons
patent: 4012215 (1977-03-01), Schwab et al.
patent: 4199342 (1980-04-01), Mestre
patent: 4348484 (1982-09-01), Joormann et al.
Derwent Publications Week 42--1985, pp. 3 and 6.
Marechal Jean-Pierre
Maschmeyer Richard O.
Corning Glass Works
Schor Kenneth M.
Zebrowski Walter S.
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