Process for improving the properties of a feed yarn

Details Process for improving the properties of a feed yarn Process for improving the properties of a feed yarn

1989-04-14

1991-11-19

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

264103, 2642108, 2642907, 28190, 281722, D02H 700

Patent

active

050664476

ABSTRACT:
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 kg/min, and have low shrinkage and no natural draw ratio in the conventional sense, provides useful technique for obtaining uniform drawn filaments of desired denier and thereby provides improved flexibility to obtain filaments and yarns of various denier. The resulting uniform filaments have useful properties that are improved in certain respects.

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: 4233363 (1980-11-01), Camel 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-Beaming, Fiber World, Sep. 1984, pp. 61-68.

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