Methods and apparatus for extruding articles

Details Methods and apparatus for extruding articles Methods and apparatus for extruding articles

1981-04-02

1983-02-08

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 83, 65 86, 65134, 65187, 65326, 65329, C03B 516, C03B 37025

Patent

active

043727719

ABSTRACT:
A fused silica glass tube (26) is extruded from a melt (21) in a chamber (11) pressurized with an inert gas. A shield is placed in close, spaced, relation to the melt (21) surface during the gas pressure extrusion process to substantially eliminate losses from the melt due to vaporization.

REFERENCES:
patent: 946179 (1910-01-01), Weiskopf
patent: 2495956 (1950-01-01), Cook
patent: 3460930 (1969-08-01), Pityo
patent: 3645712 (1972-02-01), Ihrig et al.
patent: 4032313 (1977-06-01), Tokuhara
patent: 4046535 (1977-09-01), Stalego
patent: 4078909 (1978-03-01), Dietzsch et al.
patent: 4195982 (1980-04-01), Coucoulas et al.

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