Process for quenching melt-spun filaments

Details Process for quenching melt-spun filaments Process for quenching melt-spun filaments

1981-04-07

1983-03-29

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264237, D01D 300

Patent

active

043783252

ABSTRACT:
Disclosed is a melt-spinning process of the type wherein molten polymer is extruded downwardly through a fiber pack and through coaxial circular rows of holes of a spinneret to form a circularly arranged group of filaments. Quench gas is directed across the filaments emerging from the spinneret, and the cooled filaments are gathered and redirected at a guide, which may be stationary or rotating. The quench gas is delivered by a conduit extending downwardly through the pack and spinneret coaxially relative to the rows of holes and then redirected and discharged laterally outwardly through the group of filaments above the guide.

REFERENCES:
patent: 3650716 (1972-03-01), Brossard
patent: 3781393 (1973-12-01), Feltgen et al.
patent: 3969462 (1976-07-01), Stofan
patent: 4259048 (1981-03-01), Miani

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