Multifilament yarn having novel configuration and a method for p

Details Multifilament yarn having novel configuration and a method for p Multifilament yarn having novel configuration and a method for p

1977-08-30

1981-01-06

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

28243, 57 2, 57288, 57289, 57908, 2642888, 2642905, D02G 102, D02J 122

Patent

active

042428629

ABSTRACT:
A polyester yarn composed of a plurality of individual fibrous materials such as endless filaments or fibers. Each of these fibrous material is provided with cross-sectional thicker portions, thinner cross sectional portions and intermediate thickness-size portions randomly distributed along the axial direction thereof in a particular condition of distribution of cross-sections of these fibrous material. The above-mentioned polyester yarn involved a textured yarn applied to a drawn polyester multifilament yarn having the above-mentioned basic condition. To produce the polyester yarn according to the present invention, it is the basic condition that the undrawn polyester multifilament yarn should be drawn under a condition of a drawing ratio below a natural draw ratio of undrawn filaments of said undrawn multifilament yarn and a drawing temperature above a crystallizing initiating temperature of said undrawn filaments.

REFERENCES:
patent: 3117173 (1964-01-01), Adams
patent: 3275732 (1966-09-01), MacLeod et al.
patent: 3363295 (1968-01-01), Allen
patent: 3529413 (1970-09-01), Marrinan et al.
patent: 3946548 (1976-03-01), Hino et al.
patent: 3964249 (1976-06-01), Werner et al.
patent: 3977175 (1976-08-01), Yoshikawa et al.

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