ZONED SPINNERET AND NONWOVEN FABRICS

A spinneret for melt-spinning polymeric fibers including a spinneret body defining a plurality of orifices extending through the spinneret body, wherein the plurality of orifices each comprise a capillary that open at a face of the spinneret body for polymer filament extrusion therefrom. The plurali...

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Bibliographische Detailangaben
Hauptverfasser:	Sinangil, Mehmet Selcuk, Joijode, Abhay, Moody, III, Ralph A
Format:	Patent
Sprache:	eng
Schlagworte:	BRAIDING 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 MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS SPINNING TEXTILES TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	A spinneret for melt-spinning polymeric fibers including a spinneret body defining a plurality of orifices extending through the spinneret body, wherein the plurality of orifices each comprise a capillary that open at a face of the spinneret body for polymer filament extrusion therefrom. The plurality of orifices include (i) a first group of orifices each having a first capillary having a first capillary length (L) and first capillary hydraulic diameter (DH) defining a first L/DH ratio; and (ii) a second group of orifices each having a second capillary having a second capillary length (L) and second capillary hydraulic diameter (DH) defining a second L/DH ratio, in which the first L/DH ratio is larger than the second L/DH ratio. The first group of orifices define at least one first zone at the face of the spinneret body, and the second group of orifices define at least one second zone at the face of the spinneret body.