Tow of melt-spun filaments

Details Tow of melt-spun filaments Tow of melt-spun filaments

1997-03-27

1998-09-08

Edwards, Newton

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

428362, D02G 300

Patent

active

058043039

ABSTRACT:
A tow of melt spun filaments and a method for treating such filaments to produce a tow of uniformly crimped filaments having a high initial modulus by heat setting and stuffer box crimping includes the steps of heat-setting the tow, spraying the hot-heat-set tow with an aqueous fiber finish to effect shocklike cooling of the tow, passing the sprayed tow to a pair of squeeze rolls in whose nip it is kneaded through using a defined nip pressure and squeezed off to a fiber finish pickup of 0.7 to 7% by weight of the tow weight, heating the squeezed-off moist tow on a heated multiroll arrangement in such a way that it leaves the multiroll arrangement with a moisture content of 0.5 to 5% by weight of the tow weight and a temperature of 40.degree. to 1000.degree. C., feeding the tow with this moisture content and this temperature to a crimping machine and crimping it.

REFERENCES:
patent: 3177555 (1965-04-01), Clapp et al.
patent: 5063945 (1991-11-01), Sugihara et al.
patent: 5105513 (1992-04-01), Marx et al.

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