System for preparing polymer encapsulated glass fiber pellets
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United States of America Patent
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Dec 9, 2003
Issued Date -
N/A
app pub date -
Nov 13, 2001
filing date -
Jul 16, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process and apparatus for making densified glass fiber pellets substantially encapsulated in a polymeric shell from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube, drying the pellets and encapsulating them in a polymeric composition. The resulting pellets exhibit enhanced degradation resistance during bulk storage and handling.
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