Process for the manufacture of filament yarn having protruding f

Details Process for the manufacture of filament yarn having protruding f Process for the manufacture of filament yarn having protruding f

1974-03-12

1976-11-30

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Forming continuous work followed by cutting

19 3, 19 37, 264167, 264210F, 264237, 264290T, 264290R, 428399, B29C 1700, D01D 520

Patent

active

039950042

ABSTRACT:
A process is provided for the manufacture of filament yarn having protruding filament ends on the basis of synthetic high polymers by melt spinning of the polymers through spinning nozzles, which comprises subjecting the multifilaments still hot after having left the spinning nozzle to a section cooling which causes determined sections of the single filaments to have a different molecular structure, and by subsequently drawing the filaments in a ratio which is greater than corresponding to those filament sections having a lower drawing ratio, and smaller than corresponding to those filament sections having a higher drawing ratio, thus causing the formation of determined breaks which supply the desired fiber ends.

REFERENCES:
patent: 2244281 (1941-06-01), Alibert
patent: 2313630 (1943-03-01), Dockerty
patent: 2435891 (1948-02-01), Lodge
patent: 2708813 (1955-05-01), Bourgeaux
patent: 2975474 (1961-03-01), Smith
patent: 3069726 (1962-12-01), Adams

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