Production of optical glass fibers

Details Production of optical glass fibers Production of optical glass fibers

1978-01-24

1979-03-20

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 3A, 65 12, 65121, C03B 3702

Patent

active

041452003

ABSTRACT:
In a method for producing optical glass fibers which comprises co-spinning glass melts of different kinds through coaxially disposed discharge nozzles of a multimember crucible composed of two or more crucible members having a discharge nozzle at their bottom, the improvement wherein the outermost nozzle has a length of at least 30 mm and is heated so that at least a part of it is maintained at a temperature equal to, or higher than, the temperature of the crucible thereby to increase the speed of spinning; and a high-speed spinning furnace used therefor.

REFERENCES:
patent: 3791806 (1974-02-01), Koizumi et al.
patent: 4032313 (1977-06-01), Tokuhara
patent: 4040807 (1977-08-01), Midwinter et al.

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