Process for the production of highly expanded polyolefin insulated wires and cables
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United States of America Patent
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Aug 28, 1984
Issued Date -
N/A
app pub date -
Jul 1, 1981
filing date -
Aug 21, 1973
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for producing a highly expanded polyolefin insulated cable comprising the steps of feeding a compound of polyolefin, nucleating agent and volatile liquid to an extruder, heat extruding said compound through said extruder onto an inner conductor passing through said extruder to cover the outer periphery of said inner conductor thereby forming an insulation layer of highly expanded polyolefin foam having a foaming ratio in excess of 2.5 times (60% expansion degree) tightly adhered to said inner conductor.
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