Semi-foamed polyethylene molding tape
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United States of America Patent
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Jul 26, 1988
Grant Date -
N/A
app pub date -
Dec 12, 1986
filing date -
Dec 12, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A semi-foamed polyethylene tape for use in the molding of foamed jacket pethylene cables. After tumble mixing low density foaming polyethylene, ethylene vinyl acetate co-polymer and polyethylene color concentrate, the tape is extruded on a thermoplastic extruder having a maddox mixing screw that effectively mixes polyethylene compounds and a slot die with a suitable opening dimension. The tape is then quenched. By controlling manufacturing variables the tape is foamed to 40% to 50% of its maximum. The tape is then foamed to 100% maximum during the manufacturing of a cable assembly.
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