Sheet formation system for machine for production of e.g. paper, has head box positionable for varying beam incidence angle and/or beam incidence line under maintenance of unchanged geometry of head box nozzle

摘要

The system (1) has an inner space (13) through which a fibrous material suspension (3) flows during operation of a head box (5). The suspension is attached on a wire (11) as a fibrous material suspension beam (4) under a beam incidence angle (Wauf) in a beam incidence line (I) that runs transverse to the wire during operation of the head box. A part i.e. head box nozzle (6), of the head box is positionable for varying the beam incidence angle and/or the beam incidence line under maintenance of an unchanged geometry (G) of the nozzle.