Process for the production of a polyester fiber dyeable under no

Details Process for the production of a polyester fiber dyeable under no Process for the production of a polyester fiber dyeable under no

1983-08-29

1985-01-29

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

264176F, D01D 5048

Patent

active

044965052

ABSTRACT:
A polyethylene terephthalate fiber capable of being dyed under normal pressure and having an initial modulus of more than 50 g/d, a peak temperature (T max) at peak of dynamic mechanical loss tangent (tan .delta.) measured with a frequency of 110 Hz of about 85.degree. C. to about 110.degree. C., and a peak value of the dynamic mechanical loss tangent ((tan .delta.) max) of about 0.115 to about 0.135. The fiber has a sheathcore structure such that refractive indices are different between an outer layer of the fiber and an inner layer of the fiber, and a local average refractive index distributed symmetrically around the center of the cross section of the fiber. The fiber is made by extruding a dope of polyester, passing the extruded filaments through a heating zone provided at the surface of the extrusion nozzle and having a length of at least about 5 cm and a temperature of about 150.degree. C. to about the melting point of the polymer, applying a vacuum with an aspirator located below the heating zone, and then winding at a winding speed of at least about 5,000 m/min.

REFERENCES:
patent: 2296202 (1942-09-01), Hardy
patent: 2604689 (1952-07-01), Hebeler
patent: 2957747 (1960-10-01), Bowling
patent: 3634580 (1972-01-01), Watase et al.
patent: 4134882 (1979-01-01), Frankfort et al.
patent: 4156071 (1979-05-01), Knox
patent: 4296058 (1981-10-01), Chen et al.
patent: 4338275 (1982-07-01), Carr

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