Production of micro glass fibers

Details Production of micro glass fibers Production of micro glass fibers

1987-02-26

1988-08-30

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65335, C03B 3704

Patent

active

047674318

ABSTRACT:
In this energy efficient process for forming glass microfibers, glass pellets are fed at a controlled rate into a rotary fiberizer. The input material is in the form of glass marbles or pellets which are held at a temperature below the liquidus temperature of the glass prior to extrusion through the holes in the fiberizing disc. Centrifugal force causes the semi-soft glass pellets to flow outwardly through the orifices in the fiberizing disc wherefrom they are extruded past the exterior of the disc into a high temperature environment where the temperature of the extruded glass fibers increases and the fibers are additionally subjected to further attenuation of their diameter by the action of a relatively high velocity gaseous stream which acts to stretch out the extruded fibers.

REFERENCES:
patent: 2594799 (1952-04-01), Powell
patent: 3077092 (1963-02-01), Pyches et al.
patent: 3238028 (1966-03-01), Simmers
patent: 3265483 (1966-08-01), Garrison et al.
patent: 3395005 (1968-07-01), Stelmah
patent: 3662293 (1971-11-01), Firnhaber
patent: 4353724 (1982-10-01), Houston

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