HEAT-RESISTANT POLYAMIDE MELT-BLOWN NONWOVEN FABRIC

PROBLEM TO BE SOLVED: To provide a melt-blown nonwoven fabric having various performances such as heat and hot water resistances and further usable as a filter having excellent collection performances. SOLUTION: The melt-blown nonwoven fabric is characterized as follows. The nonwoven fabric is compo...

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Bibliographische Detailangaben
Hauptverfasser:	OBATA SOUICHI, KIMURA TOMOAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BRAIDING CHEMISTRY COMPOSITIONS BASED THEREON COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS KNITTING LACE-MAKING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL METALLURGY NON-WOVEN FABRICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a melt-blown nonwoven fabric having various performances such as heat and hot water resistances and further usable as a filter having excellent collection performances. SOLUTION: The melt-blown nonwoven fabric is characterized as follows. The nonwoven fabric is composed of a polyamide comprising 60-100 mol% of a dicarboxylic acid unit composed of a terephthalic acid unit, 60-100 mol% of a diamine unit composed of a 1,9-nonanediamine unit and having 0.4-1.2 dl/g intrinsic viscosity [η] measured at 30°C in concentrated sulfuric acid and ≥10% of end groups sealed. The fiber diameter distribution (CV%) of fibers constituting the nonwoven fabric is 20-60% and 10-60% of the constituent fibers are composed of fibers fused into a bundle shape of ≥2 fibers. COPYRIGHT: (C)2005,JPO&NCIPI