SPINNERET FOR CORE-SHEATH HOLLOW CONJUGATE FIBER AND PRODUCTION OF CORE-SHEATH HOLLOW CONJUGATE FIBER

PURPOSE:To provide a spinneret enabling smooth conjugation of a core compo nent and a sheath component without causing the kneeling phenomenon of the conjugate polymer extruded from the slit of the orifice even by using polymers having large melt viscosity difference as the core component and the sh...

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Bibliographische Detailangaben
Hauptverfasser:	NAKATSUKA KOJI, TSUJIMOTO KEIZO, KITAMURA SHUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BLASTING CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING SPINNING TEXTILES WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a spinneret enabling smooth conjugation of a core compo nent and a sheath component without causing the kneeling phenomenon of the conjugate polymer extruded from the slit of the orifice even by using polymers having large melt viscosity difference as the core component and the sheath component and capable of producing a cord-sheath hollow conjugate fiber having excellent quality in high operability without causing the breakage of the hollow part. CONSTITUTION:This spinneret for the spinning of a core-sheath hollow conjugate fiber has a slit orifice. The slit 1 constituting the orifice has one or more discontinuous parts 2 and a protrusion 3 is formed on the inner edge part of each slit at a part including the center point P of the inner edge. A core-sheath hollow conjugate fiber composed of two kinds of spinning dopes having different melt viscosities is produced by a conjugate spinning method by joining the sheath component polymer to the core component polymer in such a manner as to cover the core component with the sheath component and extruding the obtained conjugate polymer through the above spinneret.