Melt-spinning process and melt-spinning apparatus for producing a crimped yarn

The invention relates to a melt-spinning process and apparatus for producing a crimped yarn. A spinneret means is used to spin a thermoplastic polymer into a filament bundle which is cooled down, drawn and, in a stuffer box, compressed into a yarn plug. The yarn plug is resolved into a crimped yarn,...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	STUENDL MATHIAS, PREHN KIRSTEN, LENNEMANN FRIEDRICH
Format:	Patent
Sprache:	eng
Schlagworte:	CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS,ROPES OR THE LIKE MECHANICAL FINISHING OF YARNS OR ROPES MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES WARPING OR BEAMING YARNS YARNS OR THREADS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to a melt-spinning process and apparatus for producing a crimped yarn. A spinneret means is used to spin a thermoplastic polymer into a filament bundle which is cooled down, drawn and, in a stuffer box, compressed into a yarn plug. The yarn plug is resolved into a crimped yarn, which is wound up to form a package. To maximize the crimp stability of the yarn, amorphous portions in the molecular structure of the post-drawing yarn material are avoided. This is achieved according to the invention by a relaxation treatment after the drawing step and before the compressing step by maintaining a minimum yarn pull force of >0.05 cN/dtex at a relaxation temperature in the range from 120 DEG C to 245 DEG C.