Flat nylon 66 yarn having a soft hand, and process for making sa

Details Flat nylon 66 yarn having a soft hand, and process for making sa Flat nylon 66 yarn having a soft hand, and process for making sa

1975-11-04

1978-06-06

Cannon, J.C.

Winding, tensioning, or guiding

Wound storage package

264176F, 264210F, 428397, B65H 5502, D01D 516, D02J 122, D02G 322

Patent

active

040931471

ABSTRACT:
Nylon 66 yarn having particular stress-strain properties, typically also having a soft, luxuriant hand in fabric form. As compared to conventional nylon 66 with comparable boiling water shrinkage, the novel yarn exhibits a higher modulus at break, a lower modulus at 10% elongation, a positive stress index, and excellent denier uniformity. The process involves subjecting the yarn, within 0.016 to 0.11 seconds after solidification of the filaments, to a tension of 0.2 and 1.5 grams per final denier and heating the yarn to a temperature between 50.degree. and 250.degree. C. long enough to reduce yarn retraction below 1%.

REFERENCES:
patent: 3002804 (1961-10-01), Kilian
patent: 3346684 (1967-10-01), Gosden
patent: 3511905 (1970-05-01), Martin
Griehl et al., Faserforschung und Texliltechnils, 1, No. 6, (1958), pp. 226-231.

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