Method of and device for admixing finely divided dye stuff into a synthetic granulate
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United States of America Patent
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Mar 1, 1988
Grant Date -
N/A
app pub date -
Aug 5, 1986
filing date -
Sep 27, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A synthetic granulate is fed into an extruder through an inclined upper part transiting into a short vertical lower part communicating with an inlet in the extruder. A down shaft of smaller diameter for feeding a stream of a dye stuff projects through the inclined part and terminates about midway in the vertical lower part. The stream of synthetic granulate forms below the outlet of the filling channel a funnel-shaped cavity onto which a stream of dosed dye stuff continuously falls. The interface of the cavity with the synthetic granules is continuously renewed and thus a uniform stream of the dye stuff is admixed to the granules.
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