Patent ID: 6881361

Claim:
A procedure for the manufacture of molded parts, in particular threads or films, the procedure comprising: forming at least two separate polymer solutions, wherein a first polymer solution comprises at least one polymer in a solvent containing amino-N-oxide and wherein the at least one polymer is selected from the group consisting of polysaccharide derivative and polyvinyl alcohol; and simultaneously extruding the at least two separate polymer solutions to form a combined extrudate and precipitating the extrudate by bringing it into contact with a coagulant, wherein at least one of the polymer solutions contains at least one inorganic or organic additive selected from the group consisting of oxides, carbides, borides, nitrides, oxynitrides, sialones and aluminosilicates, carbon-containing materials, metal powders, metal salts, polymer fibers, particle suspensions, ceramic-forming low molecular compounds and ceramic-forming high-molecular compounds, the additive having a functional ability selected from the group consisting of catalytically active, electronically conductive, ionically conductive, piezoelectric, insulating, pore-forming, mechanically strengthening, absorbing active and surface active, and wherein the polymer solutions have a weight ratio of polymer to additive of 10:1 to 1:100.