Verfahren zur Herstellung von Polytrimethylenterephthalatgarnen

Poly(trimethylene terephthalate) filaments which have been extruded through a spinneret and coated are tensioned without inducing permanent stretch, heated to a temperature higher than its glass transition temperature but lower than its crystallization temperature, and then drawn to a draw ratio of...

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Bibliographische Detailangaben
Hauptverfasser:	STUDHOLME, MATTHEW B, ROARK, MILTON K
Format:	Patent
Sprache:	ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES
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Beschreibung
Zusammenfassung:	Poly(trimethylene terephthalate) filaments which have been extruded through a spinneret and coated are tensioned without inducing permanent stretch, heated to a temperature higher than its glass transition temperature but lower than its crystallization temperature, and then drawn to a draw ratio of 1.25 to 4.0 prior to winding so as to provide filaments for yarns that resist physical aging and are useful in the fabrication of carpeting and pile fabrics.