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- W2912098496 abstract "In today’s extrusion plants, flexibility in production combined with a high productivity at the same time is an increasingly important requirement. Moreover, following strategies of minimized stock keeping and just-in-production, plastics converters must be able to produce small batch sizes economically. Due to the resulting high number of consecutive material and color changes on a production line, residence time in the extruder plays a decisive role. In this work, the residence time distribution is determined for three different extruder concepts using ultrasonic technology. A smooth bore, a grooved feed bush and a barrel with a grooved plasticizing zone, known under the trade name Helibar®, are investigated. A 35 mm barrier screw without mixing elements is used in each case. Calcium carbonate is applied as indicator material. A measuring flange between the extruder and the throttle die enables the recording of the amplitude in the inline measuring setup at different screw speeds and die back pressures. The results show that greater residence time distributions are obtained with the smooth bore extruder than with the two force feeding extruders which was to be expected. The results of the grooved feed bush extruder and grooved plasticizing zone extruder show similar process behavior." @default.
- W2912098496 created "2019-02-21" @default.
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- W2912098496 creator A5074493176 @default.
- W2912098496 date "2019-01-01" @default.
- W2912098496 modified "2023-10-12" @default.
- W2912098496 title "Investigation of residence time distribution of different screw-barrel concepts via ultrasound in extrusion" @default.
- W2912098496 cites W4231307245 @default.
- W2912098496 doi "https://doi.org/10.1063/1.5084856" @default.
- W2912098496 hasPublicationYear "2019" @default.
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