Degassing extruder
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United States of America Patent
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Aug 25, 1992
Grant Date -
N/A
app pub date -
Apr 29, 1991
filing date -
Dec 14, 1990
priority date (Note) -
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Abstract
A single-screw degassing extruder for thermoplastic plastics materials and rubber is provided, wherein the pin-barrel and transfer sections, which are known per se and have only been used individually hitherto, are jointly used in one extruder. Throttle pins, which are disposed in the transfer section in the region of the greatest housing thread volume, permit universal use of the extruder in respect of the extruded material or combinations of extruded material and stripping agent, since the mixing efficiency of the extruder and the pressure of the extruded material upstream of a degassing opening in the extruder are thereby advantageously controllable.
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