Screw extruder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 4, 1983
Grant Date -
N/A
app pub date -
May 13, 1981
filing date -
Dec 10, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An insulating coating of extruded polymer material is formed around a moving conductor wire; the extruder includes a decompression zone effective to arrest shear degradation of the polymer such that the melt index of the insulating polymer on the insulated wire is not more than 50% of the melt index of the solid, particulate polymer material before extrusion; the extruder includes valve means and intense mixing means which ensure that the polymer melts in a controlled manner whereby a uniform extrudate is formed.
First Claim
Family
International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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