Extruder assembly
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United States of America Patent
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Jun 24, 2008
Grant Date -
Apr 20, 2006
app pub date -
Oct 15, 2004
filing date -
Oct 15, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides an improved extruder assembly, that includes a wiper for wiping a screw portion in a low pressure extruder stage, whereby the wiping of the screw portion improves melt conveyance through the low pressure extruder stage. The present invention has particular utility when used in a low pressure venting and entrainment extruder stage of a single screw compounding extruder. The present invention also provides an extrusion/injection unit for use in-line compounding molding system that incorporates the improved extruder assembly.
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