Textiles: manufacturing – Thread finishing – Surface modification of running length
Patent
1975-09-29
1977-07-19
Mackey, Robert R.
Textiles: manufacturing
Thread finishing
Surface modification of running length
264168, 425 66, D02G 100
Patent
active
040358798
ABSTRACT:
An apparatus for texturizing an initial rapidly melt-spun and preoriented thermoplastic yarn, especially a linear polyester yarn, wherein the initial yarn is subjected to draw-texturizing in a residual stretching stage with heating of the running yarn followed by unilateral or one-sided cooling to provide a temperature gradient over the transverse cross-section of the yarn and in a subsequent relaxation and heat-fixing stage to self-crimp the yarn under differential shrinkage. High yarn speeds are achieved in this draw-texturizing apparatus which is therefore especially useful in combination with rapid melt-spinning units.
REFERENCES:
patent: 3317978 (1967-05-01), McIntosh et al.
patent: 3480709 (1969-11-01), Jacob et al.
patent: 3602951 (1971-09-01), Stanley
patent: 3949041 (1976-04-01), Schwarz
Barmag Barmer Maschinenfabrik Aktiengesellschaft
Mackey Robert R.
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