Device and method for cooling an extrusion cylinder
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United States of America Patent
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Sep 5, 1995
Grant Date -
N/A
app pub date -
Jan 21, 1994
filing date -
Feb 4, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A longitudinal stream of cooling air is caused to flow around the cylinder (10) and over the length of each of one or more heating-and-cooling zones. This longitudinal flow is facilitated by specially designed cooling fins (22; 25). The performance of the extruder is improved in that the temperature over the cross-section of the cylinder is more uniform. Moreover, wear and tear on the extrusion screw and on the cylinder are greatly reduced.
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