Apparatus for mixing and processing plastic material including a delivery pump
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United States of America Patent
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-
May 10, 1994
Grant Date -
N/A
app pub date -
Apr 21, 1992
filing date -
Aug 9, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mixing and processing apparatus for plastic melt is equipped with a separately drivable gear pump as a delivery unit. In order to avoid material deposits between the mixing and processing apparatus and the delivery pump, the gear pump is directly mounted at the outlet end of the mixing and processing apparatus, such as an extruder, so that the plastic melt is directly fed axially into the suction space of the gear pump. Cleaning operations after shutdown or in the case of change of material are eliminated due to this direct transfer without dead space.
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