Title: Low delivery tension process for producing crimped yarn

Abstract: False-twist heat-set thermoplastic yarn having between 10 and 100 denier is collected on a pirn using a ring-and-traveller takeup mechanism at a balloon tension between 0.03 and 0.7 grams. The resulting yarn gives improved knitting performance and greatly reduced streakiness in hose and other knitted fabrics as compared to yarn collected at higher balloon tension.

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Inventors: Familant, Harold M. (Pensacola, FL, US)

Application Number: 556231
Filing Date: 1975-03-14
Publication_date: 1976-08-10
Assignee: Monsanto Company (St. Louis, MO)
Primary Class(es): 242/159 57/75, 57/284, 57/286
Other Classes:
US Patent Ref:

3081593	Mar, 1963	Meerdink	57/157.
3279164	Oct, 1966	Breen et al.	57/157.
3462938	Aug, 1969	Mehta	57/157.
3589120	Jun, 1971	Phillips	57/157.
3638411	Dec, 1969	Tsugawa et al.	57/34.
3651633	Mar, 1972	Steinmiller	57/157.
3665696	May, 1972	Gubinsky et al.	57/157.

Other Refs:
Primary Examiner: Watkins, Donald E.
Assistant Examiner:
Attorney: Corley; Kelly O.