Process for the precision molding of glass articles

Details Process for the precision molding of glass articles Process for the precision molding of glass articles

1986-06-19

1988-05-31

Schor, Kenneth M.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

6537411, 6537413, C03B 2300

Patent

active

047478640

ABSTRACT:
Glass products such as glass lens elements are formed by an improved direct molding process at glass viscosities in the range of 10.sup.8 -10.sup.12 poises. Selected moldable alkali aluminofluorophosphate optical glasses are pressed to an optical surface finish in air utilizing an optically smooth titanium nitride molding surface, the surface being provided, for example, as a surface coating on a stainless steel mold or on a nickel chromium alloy mold supporting an electroless nickel base coating.

REFERENCES:
patent: 3244497 (1966-04-01), Copeland
patent: 3964937 (1976-06-01), Post
patent: 4120930 (1978-10-01), Lemelson
patent: 4139677 (1979-02-01), Blair
patent: 4362819 (1982-12-01), Olszewski
patent: 4481023 (1984-11-01), Marechal
patent: 4546951 (1985-10-01), Boschman

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