Process of making mixed shrinkage yarn

Details Process of making mixed shrinkage yarn Process of making mixed shrinkage yarn

1991-11-01

1993-06-29

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

281722, 28190, 2642108, 2642112, 2642356, 2642905, D02H 700, D02J 122

Patent

active

052231984

ABSTRACT:
A process of making mixed shrinkage yarn, including drawing, especially cold-drawing, or hot-drawing or other heat-treatments of spin-oriented crystalline polyester filaments, and particularly polyester feed yarns, that have been prepared by spinning at speeds of, e.g., 4 km/min, and have low shrinkage and no natural draw ratio in the conventional sense, that provides useful technique for obtaining uniform drawn filaments of desired denier and of differential shrinkage, and thereby provides improved flexibility to obtain filaments and yarns of mixed shrinkage.

REFERENCES:
patent: 3771307 (1973-11-01), Petrille
patent: 3772872 (1973-11-01), Piazza et al.
patent: 4134882 (1979-01-01), Frankfort et al.
patent: 4156071 (1979-05-01), Knox
patent: 4195051 (1980-03-01), Frankfort et al.
patent: 4407767 (1983-10-01), Seaborn
F. Maag, Production of Warps From Flat Synthetic Filament Yarns, Textile Month, May 1984, pp. 48, 49, 50.
Frank Hunter, Draw-Bearing, Fiber World, Sep. 1984 pp. 61-68.

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