System for preparing glass fiber pellets

Details System for preparing glass fiber pellets System for preparing glass fiber pellets

1997-11-21

1999-08-31

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

Tumbling type agglomerating means for particulate material

B29C 6702

Patent

active

059451343

ABSTRACT:
A system for making densified glass fiber pellets 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, and densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube for a period of time sufficient to increase their density but insufficient to degrade the fibers to a point where composite articles formed from such pellets have lower tensile or impact strengths than comparable composite articles formed from unpelletized strand segments.

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