Method for influencing the two sidedness of layer orientation and headbox for carrying out the method

摘要

At the flow opening (2) of a stock inlet (1), at a papermaking or cardboard production machine to produce a fiber web (3), the fiber suspension flow (9) or stream (10) is affected by guides (12,14.1,14.2) at both surfaces (13O,13U) of the flow passage to alter the turbulence and fluid friction.