Helically wrapped yarn

Details Helically wrapped yarn Helically wrapped yarn

1979-11-09

1982-08-31

Petrakes, John

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

57 16, 57207, 57227, D02G 336, D02G 338

Patent

active

043465536

ABSTRACT:
A core yarn has a plurality of wrapper yarns wrapped under tension in both the clockwise and counterclockwise directions. The core is composed of staple fibers having substantially no twist so that the core has substantially zero tensile strength. The tensions on the wrapper yarns are balanced by each other and are so high as to compress the core and impart to the core a sinuous configuration along its length.

REFERENCES:
patent: 2311356 (1943-02-01), Astley
patent: 2449595 (1948-09-01), Ellis
patent: 3643416 (1972-02-01), Andrews et al.
patent: 3675409 (1972-07-01), Rosenstein
patent: 3769787 (1973-11-01), Rosenstein et al.
patent: 3831369 (1974-08-01), Northup et al.
patent: 3978648 (1976-09-01), Yamagata et al.
patent: 4028874 (1977-06-01), Maag et al.

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