High speed process for making fully-oriented nylon yarns

Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation

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2642108, 26421115, 26421117, 264342RE, D01D 516, D01D 1002, D01F 660

Patent

active

055588263

ABSTRACT:
A coupled spin-draw process for making a fully-oriented nylon yarn including extruding molten nylon polymer with a selected RV through a spinneret and cooling to produce a yarn. The yarn is withdrawn from the quench zone with a feed roll rotating at a speed of at least 4500 mpm. The process further includes cold drawing followed by relaxing the yarn using a steam intermingling jet and then winding up.

REFERENCES:
patent: 4123492 (1975-05-01), McNamara et al.
patent: 4228120 (1978-04-01), Bromley et al.
patent: 4229500 (1978-01-01), Adachi et al.
patent: 4983448 (1988-06-01), Karageorgiou
patent: 5219503 (1991-11-01), Boles, Jr. et al.
Translation of Japan 61-132,615 (Published Jun. 20, 1986).

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