Back to results
US 9,206,528 B2Granted
Method and device for the production of molded bodies
AssigneeList Holding AG
InventorsAndreas Diener, Oliver Tretzack, Helmut Schildknecht, Daniel Witte
Life of this patent
Estimating the term…
Abstract
A method for the production of molded bodies from a base substance, wherein the base substance is mixed with a solution for producing a molding solution, and the solution subsequently is at least partially removed from the mixture, and the molding solution is fed to a unit for molding, wherein the molding solution is diluted before molding.
Claims8
A method for producing fibers from a renewable base substance comprising the steps of:
- (a) a first dilution step comprising mixing a renewable base substance and a solvent in the presence of heat to intensify comixing and evaporate a portion of the solvent to produce a first spinning solution;
- (b) a viscosity lowering step consisting of diluting the first spinning solution from step (a) with the same solvent from step (a) to form a second diluted spinning solution having a viscosity below that of the first spinning solution and suitable for spinning;
- (c) spinning the second diluted spinning solution with the lower viscosity to produce fibers of the renewable base substance;
- and
- wherein a tertiary amine oxide is used as the solvent in step (a) and step (b).
2 more elements
Dependencies are inferred from the claim text.