Device for the manufacture of glass filaments

Details Device for the manufacture of glass filaments Device for the manufacture of glass filaments

1981-05-04

1983-12-20

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 101, 65 111, 65347, 65DIG4, 65 12, C03B 37025

Patent

active

044215380

ABSTRACT:
A forehearth supplied with molten glass from a tank furnace, with bottom passages overlying bushings for the extrusion of vitreous filaments, forms an elongate chamber whose sidewalls are penetrated by heating electrodes spaced apart in the longitudinal direction and arrayed in two relatively staggered tiers. The electrodes of the lower tier are more numerous in the vicinity of the bottom passages than between these passages. The heating effect of the electrodes can be supplemented by top burners disposed above the glass level.

REFERENCES:
patent: 3244495 (1966-04-01), Apple et al.
patent: 3264076 (1966-08-01), Veazie et al.
patent: 3539318 (1970-11-01), Glaser et al.
patent: 3589879 (1971-06-01), Yantsev et al.
patent: 3818112 (1974-06-01), Clishem et al.
patent: 3912477 (1975-10-01), Brady et al.
patent: 4270941 (1981-06-01), Babbitt
patent: 4294603 (1981-10-01), Winzer et al.
patent: 4325721 (1982-04-01), Jensen
"The Manufacturing Technology of Continuous Glass Fibers", Loewenstein, Elsevier Scientific Publishing Co., NY, 1973, pp. 68-70.

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