Production of cross-linked polymeric extruded articles

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...

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264211, 264236, 264347, 264349, 264DIG65, 425113, B29F 310

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active

045281556

ABSTRACT:
In a method of producing an extruded, cross-linked cable coating of filled polyethylene wherein the extruder is charged with commingled polyethylene pellets and filler-EPR masterbatch pellets containing a peroxide cross-linking agent, the peroxide is incorporated in the masterbatch pellets by application to and absorption in the pellets during advance of the pellets to the extruder, while the pellets are continuously maintained at an elevated temperature for preventing bleed-out of absorbed peroxide.

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patent: 4197381 (1980-04-01), Alia
patent: 4234531 (1980-11-01), Jocteur
patent: 4276251 (1981-06-01), Bopp

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