Process for producing self-crimping polyamide yarns

Details Process for producing self-crimping polyamide yarns Process for producing self-crimping polyamide yarns

1977-10-06

1980-12-09

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

264176F, 264177F, D01D 522

Patent

active

042384397

ABSTRACT:
A melt spinning process for producing nominal 20 denier per filament polyamide yarn having a latent bulk of at least 18% is provided. The process employs polyhexamethylene adipamide modified to contain from 1 to 10 mole % of recurring units of the formula ##STR1## whereby wind-up speeds ranging from 1830 to 4570 meters per minute and higher are attainable. The resulting yarn has a usable bulk, when developed, for carpet yarn applications without further texturing of the yarn.

REFERENCES:
patent: 2957747 (1960-10-01), Bowling
"The Melting of and Crystallization of Copolymers of Nylon 66 and 610 with 6T", Harvey et al., Polymer, vol. 12, pp. 711-716, 1971.

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