NONWOVEN FABRIC

PROBLEM TO BE SOLVED: To obtain a nonwoven fabric excellent in hydrophilic property, static resistance, strength, etc., without troublesome aftertreatment of fiber such as sulfonation, etc., and a nonwoven fabric excellent in initial hydrophilic property, water-retaining property and durability, esp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TATENO HITOSHI, NAKADA KAZUYUKI
Format:	Patent
Sprache:	eng
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 KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS SPINNING TEXTILES TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a nonwoven fabric excellent in hydrophilic property, static resistance, strength, etc., without troublesome aftertreatment of fiber such as sulfonation, etc., and a nonwoven fabric excellent in initial hydrophilic property, water-retaining property and durability, especially when used for battery separators. SOLUTION: This nonwoven fabric is composed of (A) potassium ionomer having >=60% neutralization degree of ethylene-unsaturated carboxylic acid copolymer having 10-30 wt.% unsaturated carboxylic acid content and (B) a conjugate fiber comprising a hydrophobic polymer having >=125 deg.C melting point, in which at least >=30% of the surface area is occupied by the component A (e.g. conjugated yarn having core-sheath structure each containing the component A as a sheath component and the component B as a core component or parallel type conjugated fiber composed of the component A and the component B or composed of 40-100 wt.% of the above conjugated fiber and 60-0 wt.% fiber of hydrophobic polymer having >=125 deg.C melting point.