Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1995-02-22
1997-01-14
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
2642094, 2642095, 26421114, D01D 524
Patent
active
055936296
ABSTRACT:
A process for producing industrial denier filaments of a thermoplastic polymer at higher rates of production than those using liquid quenching media is disclosed. Liquid polymer is extruded in the form of hollow filaments at a throughput and rate of take up that produces individual filaments of greater than about 30 denier. A flow of gas is then directed at the liquid filaments at a flow rate and temperature that are sufficient to quench and solidify the individual filaments in the absence of any other quenching fluid. The filaments formed by the disclosed process have larger diameters than solid filaments of the same denier.
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Hoffman Robert E.
Poston, Jr. Mendel L.
Travelute Frederick L.
Tentoni Leo B.
Wellman, Inc.
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