Polyester draw-texturing feed yarns

Details Polyester draw-texturing feed yarns Polyester draw-texturing feed yarns

1979-03-02

1980-11-11

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

57243, 428364, 428369, 428374, D02G 300

Patent

active

042333636

ABSTRACT:
A draw-texturing feed yarn that is new in that it is a heather feed yarn, i.e., is suitable for draw-texturing to form textured yarns that are suitable for making fabrics having a uniform fine heather tone, comprising spin-oriented filaments of two differently-dyeable polyesters. The different component filaments are well mixed to a degree indicated by a new measurement termed DCM (Degree of Component Mixing). The different component filaments preferably have a balanced stress ratio (SR), i.e. the ratio of their stresses at the strain corresponding to the draw ratio undergone during draw-texturing is about 0.8 to about 1.2. Preferred components are homopoly(ethylene terephthalate) and cationic-dyeable copolyester. The heather feed yarns may be prepared by cospinning, with suitable arrangement of spinneret orifices and selection of suitable features, especially polymer viscosities.

REFERENCES:
patent: 3593513 (1971-07-01), Reese
patent: 3681910 (1972-08-01), Reese
patent: 3771307 (1973-11-01), Petrille
patent: 3772872 (1973-11-01), Piazza et al.
patent: 3998042 (1976-12-01), Reese
patent: 4019311 (1977-04-01), Schippers
patent: 4059949 (1977-11-01), Lee
patent: 4118534 (1978-10-01), Stanley
patent: 4157419 (1979-06-01), Mirhej
Fresco et al., Chemiefasern/Textil--Industrie, Feb. 1977, pp. 149-153 and E 26-27.

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