SYSTEM FOR PREPARING POLYMER ENCAPSULATED GLASS FIBER PELLETS

摘要

A process and apparatus for making densified glass fiber pellets (48) substantially encapsulated in a polymeric shell from chopped segments (24) 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 (41), densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube (42), drying the pellets and encapsulating them in a polymeric composition. The resulting pellets exhibit enhanced degradation resistance during bulk storage and handling.