Extruder screw with improved energy efficient melting
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United States of America Patent
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Jul 29, 2003
Issued Date -
N/A
app pub date -
May 3, 2001
filing date -
May 3, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An extruder screw includes an energy transfer section divided into successive barrier sections in which a channel formed by a first thread is divided into at least two sub-channels by a second thread. A ratio of the difference in outer diameters of the threads is approximately inversely proportional to the ratio of the lengths of adjacent ones of the barrier sections.
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