A method of influencing the two-sidedness of Layer Orientation and headbox for performing the method

The invention relates to a method for influencing the two-sidedness of Layer Orientation in a in a headbox nozzle (2) of a headbox (1) of a machine for the production of an at least single-layer fibrous web (3), in particular a paper or board web, as a fibrous suspension stream (9) guided and the headbox nozzle (2) discharged as a free jet fibrous suspension jet (10). The inventive method is characterized in that the pulp suspension flow (9) or fibrous stock suspension jet (10) at least at one of its two surfaces (13.o, 13.U) of at least one means (12; 14.1, 14.2; 18.1, 18.2; 22 ) is applied in order to modify the turbulence and fluid friction. Furthermore, the invention relates to a headbox (1) for carrying out the method according to the invention.