Method of making improved polyester filaments, yarns and tows

Details Method of making improved polyester filaments, yarns and tows Method of making improved polyester filaments, yarns and tows

1991-11-01

1992-09-08

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

264138, 264163, 264168, 2642108, 2642905, 264232, 264345, 264555, 57350, 57908, D02J 100

Patent

active

051456230

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 km/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 sub-deniers.

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-Beaming, Fiber World, Sep. 1984, pp. 61-68.

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