Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With liberating or forming of particles
Patent
1997-04-01
1999-02-09
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
With liberating or forming of particles
264117, 264143, B29B 908, B29C 6702
Patent
active
058689826
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.
REFERENCES:
patent: 4840775 (1989-06-01), Nakazawa et al.
patent: 5002827 (1991-03-01), Shimada et al.
patent: 5578535 (1996-11-01), Hill et al.
Hill Homer G.
Schweizer Robert A.
Seng Stephen
Strait Michael A.
Eckert Inger H.
Gegenheimer C. Michael
Owens--Corning Fiberglas Technology, Inc.
Theisen Mary Lynn
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