Cellulose carbamate spinning solution, method for producing a cellulose carbamate nonwoven, and use of the same
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsHorst Ebeling, Hans-Peter Fink
Life of this patent
Estimating the term…
Abstract
The present invention relates to a cellulose carbamate spinning solution, the cellulose carbamate being dissolved in an ionic liquid. The invention relates furthermore to a method for the production of nonwovens in which the cellulose carbamate spinning solution is pressed through the holes of a nozzle bar and stretched by a multiple by means of an air flow. The formed fiber curtain is laid on a perforated conveyer belt, washed and dried. Likewise, the invention relates to nonwovens of this type and also the use thereof.
Claims21
Cellulose carbamate spinning solution, comprising a solution of cellulose carbamate in at least one ionic liquid, wherein the cellulose carbamate concentration of the spinning solution is at least 15% by weight and the zero shear viscosity, measured at 100° C., is in the range of 50 to 7,500 Pas.
Dependencies are inferred from the claim text.