Extrusion method and extruder
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United States of America Patent
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-
Jun 6, 2006
Grant Date -
Feb 12, 2004
app pub date -
Sep 26, 2001
filing date -
Sep 27, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an extrusion method and an extruder, an annular material flow is created by extruding material into an annular extrusion channel (6). The extruder has a tubular filtering unit (7) arranged to the annular extrusion channel (6), whereby the annular material flow flows through the tubular surface of the filtering unit (7).
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