Process for melt-spinning of synthetic polymers

Details Process for melt-spinning of synthetic polymers Process for melt-spinning of synthetic polymers

1981-04-13

1984-03-13

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264237, 425 72S, D01D 508

Patent

active

044366884

ABSTRACT:
An improved process and apparatus for the melt-spinning of synthetic polymers are disclosed. The process and apparatus are preferably adapted to polymers such as polyamide 6, polyamide 66, polyester and their copolymers. The polymers are melt-spun in a spinneret and the resulting filaments are withdrawn at a speed between 600 and 6000 meters/min. The distance between the uppermost blow point of the cooling zone and the spinneret surface is selected so that the distance is within a range, the upper limit of which is defined by the relation B and the lower limit is defined by one of the relations A.sub.1 or A.sub.2 or A.sub.3 as follows:

REFERENCES:
patent: 4134882 (1979-01-01), Frankfort et al.

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