Verfahren zur Herstellung von Vliesstoffen, Vliesstoff und dessen Verwendung

Die Erfindung betrifft ein Verfahren zur Herstellung von Vliesstoffen, bei dem eine Cellulosecarbamat-Loesung mittels Extrusion durch einen mehrere Oeffnungen enthaltenden Duesenblock in ein Faellbad zu mehreren Endlosfaeden versponnen wird, die im Anschluss durch Anstroemen mit gasfoermigen Medium und/oder Fluid verwirbelt wird. Ebenso betrifft die Erfindung einen derartigen Vliesstoff sowie dessen Verwendung.

WO2005080660 A UPAB: 20051019 NOVELTY - For the production of nonwovens, a solution (1) of cellulose carbamate is spun into continuous filaments through a spinneret (3) with at least 20 or at least 1000 openings. The filaments pass upwards through a precipitation bath (4), and finally eddied by a gas and/or fluid medium through a jet (7). The eddied filaments are laid on a continuous conveyor (8) to pass under a washing jet (9). USE - The nonwoven is for use as a disposable material in medicine as operating theater covers, bed sheets, wound dressings, gauze or wadding. It can be used in hygiene articles, and as household wipes. Other applications include tablecloths, serviettes, curtains, as an interlay in apparel, reinforcement or insulation in the construction industry, and a fiber reinforcement for thermoplastic and heat-setting plastics materials. ADVANTAGE - The nonwoven from cellulose carbamate and regenerated cellulose gives good product characteristics with low capital and operating costs, and with little or no impact on the environment.