Method for compounding a polymerized alpha-olefin resin

Details Method for compounding a polymerized alpha-olefin resin Method for compounding a polymerized alpha-olefin resin

1993-09-29

1995-04-25

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264102, 26433117, 26421123, 264349, 425203, 425204, B29C 4776

Patent

active

054096464

ABSTRACT:
A method for compounding at least one polymerized alpha-olefin resin in an extruder including a screw having a feeding section, a melting section, and a venting section, which method includes: (1) introducing the resin and a heat transfer medium into the feeding section such that the resin is maintained at a temperature below its melting point; (2) transporting the resin and heat transfer medium to the melting section such that the resin is at a temperature which is at or just above its melting point by sublimation or vaporization of the heat transfer medium and kneading the resin at a temperature which is at or just above its melting point; (3) passing a resin melt of step (2) through a melt seal into a venting section wherein the heat transfer medium is released from the extruder; and (4) pumping the resin melt out of the extruder.

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patent: 4594213 (1986-06-01), Ealer
patent: 4814135 (1989-03-01), Heitz

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