Cleaning a glass preform with a high temperature inert gas durin

Details Cleaning a glass preform with a high temperature inert gas durin Cleaning a glass preform with a high temperature inert gas durin

1996-03-21

1999-07-13

Hoffmann, John

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

With measuring, controlling, sensing, programming, timing,...

65435, 65391, 65424, 65385, C03B 37012, C03B 37027

Patent

active

059220988

ABSTRACT:
In a drawing method and drawing apparatus according to the present invention, a forward end portion of an optical fiber glass preform is heated and melted while the glass preform is fed into a drawing furnace 3 so that an optical fiber is drawn, and the optical fiber glass preform is heated in a position just above the drawing furnace to make the surface of the glass preform clean.

REFERENCES:
patent: 4174842 (1979-11-01), Partus
patent: 4925473 (1990-05-01), Jeskey
patent: 4978378 (1990-12-01), Ito et al.
patent: 5211730 (1993-05-01), Kanamori et al.
patent: 5338327 (1994-08-01), Ohga et al.
patent: 5637130 (1997-06-01), Nagayama

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