Heather yarn made by combining polyester and polyamide yarns

Details Heather yarn made by combining polyester and polyamide yarns Heather yarn made by combining polyester and polyamide yarns

1979-04-16

1980-10-07

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

57289, D02G 302, D02J 122

Patent

active

042260795

ABSTRACT:
A continuous process is disclosed for producing a heather yarn from a continuous filament polyester feed yarn having a residual draw ratio in the range of from 1.6 to 2.0 and a continuous filament polyamide feed yarn having a residual draw ratio in the range of from 106 to 120 percent of the residual draw ratio of the polyester feed yarn. The process involves the steps of: (1) combining the yarns; (2) false twist texturing and drawing the combined yarns in a draw-texturing zone comprising feed rolls, a heating means, a friction twisting element and draw rolls; (3) randomly entangling the combined and textured yarns together in a jet-intermingling zone formed by an air jet device; and (4) withdrawing the heather yarn so produced.

REFERENCES:
patent: 3460336 (1969-08-01), Collingwood et al.
patent: 3691750 (1972-09-01), Waters
patent: 3921382 (1975-11-01), Tsujita
patent: 4060970 (1977-12-01), Talbot

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