In-line compounding and extrusion system
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United States of America Patent
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Feb 3, 2004
Issued Date -
N/A
app pub date -
Sep 25, 2002
filing date -
Sep 5, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is a continuous in-line compounding and extrusion system that does not require pre-dried wood flour or pelletized feed stock of cellulosic/polymer composite materials in order to produce net shapes from cellulosic/polymer composite materials. An exemplary embodiment of the present invention utilizes automated loss-in-weight feeders to dispense wood flour and all of the other cellulosic/polymer composite materials into a compounder. The compounder blends the cellulosic/polymer composite materials into a composite melt. The composite melt is continuously devolitalized as it travels through the compounder, a transition chute, and a finish extruder. The composite melt is then forced through a profile die which is fitted to the finish extruder in order to achieve a net shape.
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