Method of manufacturing solid glass preforms from hollow preform

Details Method of manufacturing solid glass preforms from hollow preform Method of manufacturing solid glass preforms from hollow preform

1986-10-02

1988-05-24

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 12, 65108, 65109, C03B 37027

Patent

active

047463457

ABSTRACT:
Solid glass preforms are made by externally heating a tubular preform by a plasma which is reciprocated along the hollow tube. The plasma gas consists entirely or partly of a molecular gas (N.sub.2 or O.sub.2, for example). The hollow preform is preferably rotated during collapsing.

REFERENCES:
patent: 3646308 (1972-02-01), Spiessens
patent: 3737292 (1973-06-01), Keck
patent: 3737293 (1973-06-01), Maurer
patent: 4304581 (1981-12-01), Saifi
patent: 4341441 (1982-07-01), Lighty
patent: 4402720 (1983-09-01), Edahiro
patent: 4417911 (1983-11-01), Cundy
patent: 4440556 (1984-04-01), Oh
patent: 4596589 (1986-06-01), Perry
Koel, G. J., "Technical and Economic Aspects of the Different Fibre Farbication Processes," Proc. 8th Duro. Conf. on Optical Communication, Cannes., Sep. 1982, pp. 1-8.

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