Production of micro glass fibers
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United States of America Patent
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Aug 30, 1988
Grant Date -
N/A
app pub date -
Feb 26, 1987
filing date -
Feb 26, 1987
priority date (Note) -
Expired
status (Latency Note)
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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.
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