Textiles: spinning – twisting – and twining – Apparatus and processes – Elements
Patent
1974-09-05
1976-03-02
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Elements
28 7212, 57140BY, 57157F, D02G 332, D02J 108
Patent
active
039409171
ABSTRACT:
A composite yarn, which is bulky when relaxed and elongates to at least 100 percent greater length under tension, with quick recovery of the relaxed condition when tension is removed, is composed of uncrimped elastic yarn and at least five relatively inelastic continuous filaments entangled about the elastic yarn to provide protection and desirable textile properties. The composite yarn can be made at unusually high speeds by entangling the relatively inelastic filaments about stretched elastic yarn with jets of high velocity fluid impinged at an angle of 90.degree..+-.45.degree. to the yarn axis, using a filament feed rate which avoids formation of filament loops in the stretched yarn. Examples illustrate combining spandex elastic yarn at 4X stretch with nylon filaments at zero percent overfeed, when using feed rates of up to 789 yards per minute.
REFERENCES:
patent: 2985995 (1961-05-01), Bunting, Jr. et al.
patent: 3013379 (1961-12-01), Breen
patent: 3078654 (1963-02-01), Marshall
patent: 3501819 (1970-03-01), Satterwhite
patent: 3540204 (1970-11-01), Tanaka et al.
patent: 3807162 (1974-04-01), Tsujita et al.
E. I. Du Pont de Nemours and Company
Petrakes John
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