Hollow glass fiber bushing, method of making hollow fibers and t

Details Hollow glass fiber bushing, method of making hollow fibers and t Hollow glass fiber bushing, method of making hollow fibers and t

1987-08-10

1988-07-19

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 2, 65 86, 4251331, 425462, C03B 37022

Patent

active

047582596

ABSTRACT:
A method and apparatus for producing hollow glass fibers is described in which the glass from a bushing tip and the gas used to provide a lumen in fibers as they are drawn from the tip are fed from passages in the tip sized to provide desired inside to outside diameter in the fibers drawn at the tip. This ratio is established inside of the tip by sizing the gas column having the tip and the glass column leaving the tip such that the ratio of the gas column to glass column is substantially the same ratio desired in the hollow fiber being drawn. Apparatus used to produce this ratio is also shown.

REFERENCES:
patent: 3257183 (1966-06-01), Slayter et al.
patent: 3268313 (1966-08-01), Burgman et al.
patent: 3412873 (1969-01-01), Burgman et al.
patent: 3510393 (1970-05-01), Burgman et al.
patent: 3526571 (1970-09-01), Ogata

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