Method for measuring yarn shrinkage and crimp development

Details Method for measuring yarn shrinkage and crimp development Method for measuring yarn shrinkage and crimp development

1980-06-11

1981-10-20

Yasich, Daniel M.

Textiles: manufacturing

Thread finishing

Surface modification of running length

28281, 73160, D02G 120, D02J 112

Patent

active

042952522

ABSTRACT:
A method for measuring continuously shrinkage and crimp development in a long continuous sample of yarn involves the steps providing a zero-tension loop, applying a standard tension, then developing crimp in a single downward pass through a hot air chamber providing a second zero-tension loop and thereafter retensioning it. The shrinkage and crimp development is calculated from differential speeds of rolls advancing the yarn.

REFERENCES:
patent: 2744408 (1956-05-01), Seney
patent: 3047198 (1962-07-01), Long
patent: 3333467 (1967-08-01), Hoskins
patent: 3492838 (1970-02-01), Reiners et al.
patent: 3694634 (1972-09-01), Horst et al.
patent: 3721376 (1973-03-01), Christian et al.
patent: 3726137 (1973-04-01), Denton
patent: 3762220 (1973-10-01), Gusack et al.
patent: 3763669 (1973-10-01), Bous et al.
patent: 4035880 (1977-07-01), Hills et al.
Publication-"Testing Method for Measurement of Crimp . . . in Yarns", by Lunenschloss et al., Ref.-Chemiefasern 21 4-49 (1971) Jan., pp. 11-12.
Publication-"Controlling Textured Yarn by Measurement of Reactive Force", by M. J. Denton, Shirly Institute Part 2, Appendix II (4 pages), Textile Month 3/1973, pp. 30-31.
Publication-Research Disclosure Journal, Apr. 1974, "Crimp Characterization Instrument", 3 pages.

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