Device for feeding granulate and filler material to an extruder screw of an extruder
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United States of America Patent
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Jan 5, 2016
Grant Date -
Jan 22, 2015
app pub date -
Feb 19, 2013
filing date -
Feb 28, 2012
priority date (Note) -
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Abstract
A device for feeding granulate and filler material to an extruder screw of an extruder, includes a cyclone with an inlet opening for introducing a delivery flow of pneumatically delivered filler material and an outlet opening for discharging the filler material which has been separated from the delivery flow, a feed funnel for the fresh granulate and a mixing section, to which the separated filler material and the fresh granulate are fed from the feed funnel. The cyclone is disposed at least partially in the feed funnel and coaxial with the latter, so that the outlet opening of the cyclone extends into a feed funnel outlet region which surrounds the outlet opening in an annular manner, wherein a stuffing screw passes axially through the outlet opening of the cyclone and protrudes at least partially into the mixing section which axially adjoins the outlet opening.
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