Method for producing thermoplastic synthetic yarn

Details Method for producing thermoplastic synthetic yarn Method for producing thermoplastic synthetic yarn

1989-07-24

1991-05-28

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264180, 264181, 2642102, 2642108, 2642107, 26421115, 26421117, D01D 5088, D01D 514

Patent

active

050193163

ABSTRACT:
A system for producing a drawn yarn having a durable mechanical and thermal stability in practical use from a fiber-forming polymer by means of a single continuous process is disclosed. A yarn extruded from a spinneret is first introduced into a liquid bath for cooling and subsequently to a hot chamber filled with a pressurized steam for heat-treatment, in which the yarn is drawn against a resistance caused by the liquid bath. The vessel of the liquid bath is provided with a yarn exit path adapted to allow the passage of the yarn but inhibit the leakage of the liquid and to remove a concomitant liquid from the yarn. The hot chamber is provided with inlet and outlet paths for the yarn also adapted to allow the passage of the yarn but inhibit the leakage of the steam. The system is suitable for producing for industrial use a yarn composed of thicker individual filaments.

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