Method and device for the production of molded bodies

摘要

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.

主权项

1. 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).