Cyclic tensioning of never-dried yarns

Details Cyclic tensioning of never-dried yarns Cyclic tensioning of never-dried yarns

1989-02-21

1991-06-11

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264205, 2642108, 26421115, 26421116, 264233, 2642107, D01F 660, D01D 1006

Patent

active

050230352

ABSTRACT:
A process is disclosed for preparing high tenacity, high modulus, para-aramid fibers by application of cyclic tensioning forces to such fibers in the newly-spun, wet, state before they have been dried.

REFERENCES:
patent: 3767756 (1973-10-01), Blades
patent: 4298565 (1981-11-01), Yang
patent: 4340559 (1982-07-01), Yang
patent: 4842796 (1989-06-01), Matsui et al.
patent: 4859393 (1989-08-01), Yang et al.
Mol. Cryst. Liq. Cryst., 1987, vol. 153, pp. 547-552, Roche et al.

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