Process for obtaining polyamide yarns with better output efficie

Details Process for obtaining polyamide yarns with better output efficie Process for obtaining polyamide yarns with better output efficie

1994-08-10

1995-04-11

Ryan, Patrick J.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

428364, 428375, 264211, 26421114, B32B 700

Patent

active

054056977

ABSTRACT:
An improved output efficient polyamide-based preoriented yarn spun at a speed of at least 4000 m/min and obtained by introducing, before the spinning, of a quantity of 0.05 to 1% by weight of pyrogenic silica of particle size of between 5 and 15 nm into the molten polymer in the form of dispersion in a master mix of the same polyamide as that intended to be processed, the filaments after spinning being then cooled by means of a gas stream at room temperature and then sized and wound at a speed of between 4200 and 5800 m/min. The preoriented yarns thus prepared exhibit a delay in the orientation and are obtained with a gain in output efficiency of at least 10%, generally at least 15%.

REFERENCES:
patent: 2385890 (1945-10-01), Spanagel
patent: 2818173 (1958-01-01), Dithmar
patent: 2885308 (1959-05-01), Healy, Jr.
patent: 3493424 (1970-02-01), Mohrlok
patent: 3652329 (1972-03-01), Vossos
patent: 3771307 (1973-11-01), Petrille
patent: 3994121 (1976-11-01), Adams
patent: 4096226 (1978-06-01), Martin et al.
patent: 4118372 (1978-10-01), Schaefgen
patent: 4487011 (1984-12-01), Heinrich et al.
patent: 4682465 (1987-07-01), Kojima et al.
patent: 4722864 (1988-02-01), Matthews
patent: 4773206 (1988-09-01), Kojima et al.
patent: 5238637 (1993-08-01), Chaubet et al.
World Patent Index, Section CH, Week 7844, Derwent Publications (GB), Class A, AN 78-79190a (& JP-A-53 111 121) (1978).

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