ULTRA FINE FIBER MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide an ultra fine fiber manufacturing method for obtaining ultra fine fiber of synthetic fiber using the electrospinning method.SOLUTION: An ultra fine fiber manufacturing method according to this invention has a process to form an electric field between a discharge nozz...

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Bibliographische Detailangaben
Hauptverfasser: AMARI NAOMI, SAITO KOJI, YONEDA KEITARO, SUZUKI DAIYA, TOJO TAKEHIKO, MUKAI KENTA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an ultra fine fiber manufacturing method for obtaining ultra fine fiber of synthetic fiber using the electrospinning method.SOLUTION: An ultra fine fiber manufacturing method according to this invention has a process to form an electric field between a discharge nozzle, which discharges raw material resin, and a charged electrode disposed away from the discharge nozzle, and spin a yarn by supplying the raw material resin to the electric field from the raw material discharge nozzle. The raw material resin is a resin mixture containing resin having melting point and addition agent and satisfies a following equation: A/B≥1.0×10(I), where A indicates absolute value (Ω) of electric impedance of the raw material resin at 50°C, and B indicates absolute value (Ω) of electric impedance of the raw material resin at a temperature that is higher by 50°C than the melting point of the raw material resin.SELECTED DRAWING: Figure 1 【課題】電界紡糸法を用いて合成繊維の極細繊維を得る極細繊維の製造方法を提供すること。【解決手段】本発明の極細繊維の製造方法は、原料樹脂を吐出する吐出ノズルと、該吐出ノズルと離間して配置された帯電電極との間に電場を形成し、該電場中に加熱溶融した原料樹脂を前記原料吐出ノズルより供給して紡糸する工程を有する。前記原料樹脂は、融点を有する樹脂と添加剤とを含む樹脂混合物であり、且つ次式(I)を満たす。A/B≧1.0×102(I)式中、Aは50℃における前記原料樹脂の電気インピーダンスの絶対値(Ω)を示し、Bは該原料樹脂の融点よりも50℃高い温度における該原料樹脂の電気インピーダンスの絶対値(Ω)を示す。【選択図】図1