Process of treating a tow of melt-spun filaments

Details Process of treating a tow of melt-spun filaments Process of treating a tow of melt-spun filaments

1996-05-31

1997-10-21

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Anti-stick or adhesion preventing coating

264168, 2642105, 2642108, 26421114, 26421115, 26421117, 2642356, 2642896, 2642905, D01D 512, D02G 112

Patent

active

056793006

ABSTRACT:
A method for treating a tow of melt-spun 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 100.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: 3943138 (1976-03-01), Marshall et al.
patent: 4197622 (1980-04-01), Williamson
patent: 4642860 (1987-02-01), Saleh et al.

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