Polyamide spin-texture process

Details Polyamide spin-texture process Polyamide spin-texture process

1977-12-23

1980-05-13

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

With crimping or crinkling of strands of filaments

2642107, 2642907, D01D 522

Patent

active

042028540

ABSTRACT:
A spin-texture process for producing polyamide yarns is described in which a freshly extruded yarn is passed between two pairs of rotating rolls and then collected. The second pair of rolls (draw rolls) is driven at a peripheral speed greater than that of the first pair of rolls (feed roll and its associated separator roll). The feed roll is maintained and a given temperature which is correlated with other processing conditions to impart a desired level of latent crimp to the yarn. Yarns prepared by the process have a potential bulk of between 10% and 50% and are particularly useful as carpet yarns.

REFERENCES:
patent: 3555139 (1971-01-01), Water et al.
patent: 3732346 (1973-05-01), Mallonee et al.
patent: 3822334 (1974-07-01), Patterson
patent: 3936253 (1976-02-01), Fisher et al.
patent: 4042662 (1977-08-01), Corbin et al.
patent: 4069657 (1978-01-01), Bascom et al.
patent: 4096226 (1978-06-01), Martin et al.

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