A method for producing a nonwoven for shielding electromagnetic radiation, in particular in the terahertz (THz) range, more particularly in the range from 5 THz to 300 THz, comprising or consisting of a network of coated polymer fibers with filled fiber cores that is arranged randomly and irregularly in three dimensional directions (X, Y and Z) of the nonwoven, characterized in that the method comprises or consists of the following steps: a. providing a first metal alloy adapted to shield electromagnetic radiation, in particular in the terahertz (THz) range, more particularly in the range from 5 THz to 300 THz, b. providing a polymer material, c. providing a second metal alloy which differs from the first metal alloy of step a) in that a charge potential difference can be effected between the first and second metal alloys, d. producing polymer fibers with filled fiber cores by evaporating the first metal alloy of step a) into first metal alloy molecules having a trigonal structure and mixing the first metal alloy molecules with the polymer material provided in step b) as well as arranging the metalized polymer material in fiber form, wherein the first metal alloy molecules having a trigonal structure are essentially arranged inside the core of the polymer fiber and form a lattice in which the individual first metal alloy molecules are each isolated by the polymer but overlie the electron clouds of the adjacent first metal alloy molecules, and e. coating at least a part of the surface of the polymer fibers with filled fiber cores of step d) with the second metal alloy of step c), wherein the second metal alloy is evaporated into individual second metal alloy molecules having a hexagonal or octagonal structure which are arranged on the polymer fiber surface isolated from one another and form a surface lattice in which the electron clouds of the individual second metal alloy molecules overlie one another, and producing the nonwoven by randomly and irregularly arranging the coated polymer fibers with filled fiber cores in the three spatial dimensional directions (X, Y and Z), or f. producing the nonwoven by randomly and irregularly arranging the polymer fibers with filled fiber cores of step d) in the three spatial dimensional directions (X, Y and Z) and coating at least a part of the surface of the nonwoven with the second metal alloy of step c), wherein the second metal alloy is evaporated into individual second metal alloy molecules having a hexagonal or octagonal structure which are arranged on the polymer fiber surface isolated from one another and form a surface lattice in which the electron clouds of the individual second metal alloy molecules overlie one another. a. providing a first metal alloy adapted to shield electromagnetic radiation, in particular in the terahertz (THz) range, more particularly in the range from 5 THz to 300 THz, b. providing a polymer material, c. providing a second metal alloy which differs from the first metal alloy of step a) in that a charge potential difference can be effected between the first and second metal alloys, d. producing polymer fibers with filled fiber cores by evaporating the first metal alloy of step a) into first metal alloy molecules having a trigonal structure and mixing the first metal alloy molecules with the polymer material provided in step b) as well as arranging the metalized polymer material in fiber form, wherein the first metal alloy molecules having a trigonal structure are essentially arranged inside the core of the polymer fiber and form a lattice in which the individual first metal alloy molecules are each isolated by the polymer but overlie the electron clouds of the adjacent first metal alloy molecules, and e. coating at least a part of the surface of the polymer fibers with filled fiber cores of step d) with the second metal alloy of step c), wherein the second metal alloy is evaporated into individual second metal alloy molecules having a hexagonal or octagonal structure which are arranged on the polymer fiber surface isolated from one another and form a surface lattice in which the electron clouds of the individual second metal alloy molecules overlie one another, and producing the nonwoven by randomly and irregularly arranging the coated polymer fibers with filled fiber cores in the three spatial dimensional directions (X, Y and Z), or f. producing the nonwoven by randomly and irregularly arranging the polymer fibers with filled fiber cores of step d) in the three spatial dimensional directions (X, Y and Z) and coating at least a part of the surface of the nonwoven with the second metal alloy of step c), wherein the second metal alloy is evaporated into individual second metal alloy molecules having a hexagonal or octagonal structure which are arranged on the polymer fiber surface isolated from one another and form a surface lattice in which the electron clouds of the individual second metal alloy molecules overlie one another.