Method for spinning a synthetic yarn

Details Method for spinning a synthetic yarn Method for spinning a synthetic yarn

1996-07-19

1998-07-21

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

2642108, 26421112, 26421117, D01D 516, D01D 1002

Patent

active

057831270

ABSTRACT:
A method and apparatus for spinning, drawing, and winding a synthetic filament yarn, wherein the yarn is subjected during its drawing in a draw zone to a multi-stage heat treatment by heated surfaces. In the first heat treatment, the yarn is heated to the range of the glass transition temperature of the yarn material, and the yarn is guided over the heating surface while partially looping thereabout. The second stage of the heat treatment is formed by an elongate heating surface, and at least one of the heating surfaces is heated to a surface temperature above the melt point of the yarn material. In the draw zone, the yarn is subjected to a tension, which is necessary for a plastic deformation in or directly downstream of the first stage of the heat treatment. In this process, the yarn is drawn and set.

REFERENCES:
patent: 3103407 (1963-09-01), Clark et al.
patent: 4369155 (1983-01-01), Schilo et al.
patent: 4877572 (1989-10-01), Clarke et al.
patent: 4902461 (1990-02-01), Schippers
patent: 5469149 (1995-11-01), Binner et al.
patent: 5558825 (1996-09-01), Ueda et al.

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