Melt flow compensation in an extrusion apparatus
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United States of America Patent
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-
Apr 15, 2003
Grant Date -
Apr 3, 2003
app pub date -
Sep 21, 2001
filing date -
Sep 21, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed are a method and apparatus for matching the extrusion rate of a liquifier which extrudes a flow of material to a predetermined target output rate. The present invention adjusts the volumetric rate of material going in to the liquifier to account for a predicted melt flow component of material being extruded from the liquifier. Compensating for the predicted melt flow results in reduced error in an extrusion profile produced by material deposited along a toolpath followed by the liquifier.
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