Functionalization of foreign matters in lyocell-methods and molded bodies thereof

Abstract

A regenerated cellulosic molded body of cellulose and at least a part of at least one foreign matter, and is produced by supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath.

What is claimed is: 
     
         1 . A molded body comprising cellulose and at least one foreign matter wherein the cellulose and the at least one foreign matter are derived from a starting material in which the cellulose and the at least one foreign matter are present in a common solid body composite, wherein a concentration of the at least one foreign matter provides a technical function, and wherein the molded body is a regenerated cellulosic molded body. 
     
     
         2 . The molded body of  claim 1 , wherein the starting material comprises a cellulose source to be recycled that is completely or partially made of remains of a clothing manufacture and/or made of old clothes. 
     
     
         3 . The molded body of  claim 1 , wherein the at least one foreign matter comprises at least one of a group which is consisting of a colorant, an optical brightener, a matting agent, and an antimicrobial substance. 
     
     
         4 . The molded body of  claim 1 , wherein the at least one foreign matter comprises elastane which, during solving the cellulose, is also at least partially solved. 
     
     
         5 . The molded body of  claim 1 , wherein the at least one foreign matter comprises polyester which is at least partially retained in the starting material, when the starting material is at least partially solved. 
     
     
         6 . The molded body of  claim 1 , wherein the at least one foreign matter which is present in the molded body has a portion of at least 0.01 weight percent with respect to the total weight of the molded body. 
     
     
         7 . The molded body of  claim 1 , wherein the molded body is one of a group consisting of fibers, foils, sponges or spheres. 
     
     
         8 . The molded body of  claim 1 , wherein the regenerated cellulosic molded body includes lyocell fibers. 
     
     
         9 . The molded body of  claim 1 , wherein the regenerated cellulosic molded body includes viscose fibers. 
     
     
         10 . The molded body of  claim 1 , wherein a distribution of the at least one foreign matter is homogenous. 
     
     
         11 . The molded body of  claim 1 , wherein the at least one foreign matter is elastane to impart elasticity to the molded body. 
     
     
         12 . The molded body of  claim 1 , wherein the at least one foreign matter is polyester to impart a thermoplastic deformability or an increased mechanical stability to the molded body. 
     
     
         13 . The molded body of  claim 1 , wherein the molded body is manufactured by:
 transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent;   selectively adjusting a desired or pre-given residual concentration of the at least one foreign matter in the molded body for obtaining a technical function of the at least one foreign matter in the molded body; and   extruding the spinning mass to the molded body and subsequently precipitating in a spinning bath, wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter.   
     
     
         14 . The molded body of  claim 13 , further comprising at most partially removing at least one of the at least one foreign matter by separating a part of the at least one foreign matter from the cellulose of the starting material to precipitating. 
     
     
         15 . The molded body of  claim 13 , further comprising at least partially removing non-cellulosic fibers from the starting material prior to precipitating. 
     
     
         16 . The molded body of  claim 13 , further comprising at least partially-removing metals from the starting material. 
     
     
         17 . The molded body of  claim 13 , wherein the molded body is manufactured without performing a bleaching procedure. 
     
     
         18 . The molded body of  claim 13 , wherein, prior to solving, the starting material is presorted by colors in multiple color groups and respectively only presorted starting material of a common color group is solved. 
     
     
         19 . The molded body of  claim 13 , comprising at least one of the following features:
 wherein precipitating is caused by diluting the starting material solved in the spinning mass, by an aqueous environment in the spinning bath;   wherein the method comprises comminuting, the starting material prior to solving the starting material in the solvent;   wherein the starting material, prior to precipitating is at least partially freed from cross-linkers which are cross-linking fibers of the starting material;   wherein the starting material, prior to its precipitating in the solvent is combined with another cellulose source, wherein the other cellulose source comprises a material of a group which is consisting of wood pulp, rags pulp, cotton, cellulose manufactured by a lyocell-method, and cellulose manufactured by a viscose-method;   wherein the manufacturing comprises postprocessing the precipitated molded body;   wherein solving the starting material is performed by a direct solving method and/or by tertiary amine oxides as solvent;   wherein the method is performed such that, based on a control command, an amount of the at least one foreign matter which is retained in the molded body to be manufactured, is adjusted in a user-defined manner;   wherein the common solid body composite comprises at least one of a group which is consisting of a textile planar structure, a fiber composite and a molded body composite;   wherein the method comprises further processing of manufactured molded bodies to a product.   
     
     
         20 . The molded body of  claim 13 , wherein manufacturing the molded body comprises a lyocell method or a viscose method.