SPINNING NOZZLE AND PROCESS FOR PRODUCING FIBROUS BUNDLE

A spinning nozzle (1) which has a perforated part (2) in which ejection holes (3) have been arranged in a density as high as 600-1,200 holes/mm 2 . This process for producing a fibrous bundle comprises ejecting a spinning dope having a viscosity as measured at 50°C of 30-200 P from the ejection hole...

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Bibliographische Detailangaben
Hauptverfasser:	NAKANISHI, Shima, KOTERA, Yoshinobu, ONOHARA, Yukio
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BRAIDING CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS IMPREGNATING OR COATING OF PAPER KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS SPINNING TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	A spinning nozzle (1) which has a perforated part (2) in which ejection holes (3) have been arranged in a density as high as 600-1,200 holes/mm 2 . This process for producing a fibrous bundle comprises ejecting a spinning dope having a viscosity as measured at 50°C of 30-200 P from the ejection holes (3) of the spinning nozzle (1) to produce a fibrous bundle. This fibrous bundle has a single-fiber fineness of 0.005-0.01 dtex. By the wet-process direct spinning, a mass of nanofibers which are stably uniform and continuous can be produced at a high efficiency.