Hydroformed composite nonwoven

The invention refers to a method for manufacturing a composite nonwoven web material comprising extruding continuous filaments from a spinnerette, drawing the filaments by a slot attenuation unit to thin continuous filaments, forming a web of unbonded continuous filaments without thermobonds as the...

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Bibliographische Detailangaben
Hauptverfasser:	FINGAL, LARS, STRALIN, ANDERS, TONDKAR, KAVEH
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 IMPREGNATING OR COATING OF PAPER 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 PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPINNING TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TRIMMINGS WADDING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention refers to a method for manufacturing a composite nonwoven web material comprising extruding continuous filaments from a spinnerette, drawing the filaments by a slot attenuation unit to thin continuous filaments, forming a web of unbonded continuous filaments without thermobonds as the filaments are laid down, hydroentangling the web comprising continuous spunlaid filaments together with wet or foam formed short fibers comprising natural and/or synthetic fibers or staple fibers to integrate and mechanically bond and form a thermally unbonded composite nonwoven web material and a moist environment is created at the formation and lay down of the continuous filaments by the steps of laying down the filaments on an already wetted surface, keeping the width of the outlet of the slot attenuation unit open by more than 65 mm and adding liquid at the outlet of the slot attenuation unit.