Bulky spun yarn and a method for manufacturing the same from a c

Details Bulky spun yarn and a method for manufacturing the same from a c Bulky spun yarn and a method for manufacturing the same from a c

1980-01-23

1981-12-29

Cannon, James C.

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

28281, 57 3, 57 6, 57 12, 57253, 57254, 57255, 428369, 428370, 428394, 428395, 428399, D02G 324, D02G 336

Patent

active

043075665

ABSTRACT:
A double layered yarn having a sheath and core structure is prepared through a roving process, drawing process or fine spinning process. The sheath portion of the yarn is composed of staple fibers which have a high thermal shrinkage in boiling water of at least 5%, and the blended fiber ratio of which is between 50% and 25%. The core portion of the yarn is composed of staple fibers which have a property being spontaneously extensible, and the blended fiber ratio of which is between 25% and 75%. The double layered yarn is subjected to a heat treatment in hot water, and a bulky spun yarn which comprises staple fibers A and B is obtained. The staple fibers A are concentrated toward the inside of the bulky spun yarn after they are shrunk. The ends of staple fibers B are held within the inside of the bulky spun yarn, and the intermediate portions of fibers B are bulged as a loop from the body portion of the bulky spun yarn, after the fibers B are spontaneously extended.

REFERENCES:
patent: 3111805 (1963-11-01), Boyer
patent: 3325876 (1967-06-01), Ibrahim
patent: 3439490 (1969-04-01), Tarkington
patent: 3568428 (1971-03-01), Stemford et al.
patent: 3596459 (1971-08-01), Wada et al.
patent: 3852948 (1974-12-01), Ruddell
patent: 3998042 (1976-12-01), Reese

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