PRODUCTION OF LATENT HIGH-BULKY MULTIFILAMENT YARN AND SPINNERET THEREFOR

PURPOSE:A couple of a hollow nozzle of a large cross section and a simple nozzle of a small cross section are connected with a slit whereby the resultant multifilaments are increased in shrinkage difference between intra- and inter- filaments. CONSTITUTION:A polymer is extruded through a spinneret i...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIMOTO MASATO, OOWAKI SHINJI
Format:	Patent
Sprache:	eng
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:	PURPOSE:A couple of a hollow nozzle of a large cross section and a simple nozzle of a small cross section are connected with a slit whereby the resultant multifilaments are increased in shrinkage difference between intra- and inter- filaments. CONSTITUTION:A polymer is extruded through a spinneret in which a plurality of hollow fiber nozzles composed of slits 1a-1c and simple nozzles 2 are connected with slits 3. The polymer flow extruded out of the simple nozzle 2 at a higher speed than the other polymer flow through hollow nozzle violently collides with the latter to effect adhesion as the former is bouncing, then solidified by cooling, and taken up at a speed of over 2,500m/min. After drawing, the resultant filament has big difference in shrinkage in both cross-sectional and longitudinal directions to show satisfactory shrinking force.