Textiles: spinning – twisting – and twining – Apparatus and processes – Elements
Patent
1976-02-26
1977-05-31
Watkins, Donald
Textiles: spinning, twisting, and twining
Apparatus and processes
Elements
D02G 102
Patent
active
040260984
ABSTRACT:
Yarn of polyester filaments having a random distribution along the filament length of thick and thin sections, which differ in dye uptake, is produced by incompletely drawing a spin-oriented yarn, preferably one prepared by melt-spinning polyethylene terephthalate into yarn while withdrawing the yarn from the spinneret at a take-off speed of 3000 to 4000 yards per minute. The spin-oriented yarn is drawn on a hot draw pin of about 1.3 to 6 cm in diameter, using a draw ratio which is 82 to 95 percent of the draw ratio needed to fully draw the yarn. The incompletely drawn yarn can be false-twist textured under conditions conventionally used for fully drawn polyester yarn. The textured yarn provides attractive dyed fabrics due to darker shades of color in the thick filament sections.
REFERENCES:
patent: 3094834 (1963-06-01), Deeley et al.
patent: 3117173 (1964-01-01), Adams
patent: 3127915 (1964-04-01), Bottomley et al.
patent: 3275732 (1966-09-01), Macleod et al.
patent: 3478143 (1969-11-01), Werner et al.
patent: 3835632 (1974-09-01), Kishida et al.
patent: 3939637 (1976-02-01), Franz et al.
E. I. Du Pont de Nemours and Company
Watkins Donald
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