CROSS SECTIONAL FORM-CONTROLLED FIBER AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a polyethylene terephthalate fiber having a controlled cross sectional form of a fiber for weight reduction a fiber having a modified cross section, or an extremely fine fiber, or the like, and to provide a method for producing the same. SOLUTION: The method for prod...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAMOTO KIYOSHI, KIKUTANI YUUJI
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 FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a polyethylene terephthalate fiber having a controlled cross sectional form of a fiber for weight reduction a fiber having a modified cross section, or an extremely fine fiber, or the like, and to provide a method for producing the same. SOLUTION: The method for producing the cross sectional form-controlled fiber uses A-components 1, 3, 5, 7, and 9 as the polyethylene terephthalate and B-components 2, 4, 6, 8, and 10 as a block copolymer having a prescribed constituting ratio of polystyrene blocks to polyolefin blocks, having a melt flow rate of the component B of not less than 3 g/10 min, having a prescribed constitution rate of the component A to the component B and extruding the molten polymers of the component A and component B from a composite spinning nozzle and spinning the molten polymers at a high speed of not less than 5 km/min. The composite fiber obtained by the this method, and the polyethylene terephthalate fiber obtained by removing the component B from the composite fiber are also provided. COPYRIGHT: (C)2010,JPO&INPIT