Functionalization of foreign material in lyocell-methods

Method of manufacturing a regenerated cellulosic molded body, wherein the method comprises:

• supplying a starting material which comprises cellulose and at least one foreign matter, wherein the cellulose and the at least one foreign matter of the starting material, when being supplied, are present in a common solid body composite;
• 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.