Method for control of z-anisotropy of fibrous material web manufactured in fine paper machine, involves separating fiber suspension flow forming surface layer toward lip from fiber suspension flow forming remaining layers

摘要

The method involves forming a speed level and turbulence of fibrous material suspension at different sides of separation wedges (64) different. A flow channel is used in a turbulence generator (46) and/or in a nozzle chamber (58). A fibrous suspension flow formed from a surface layer of a fibrous web is throttled at an outlet gap of a headbox. A tip of a lip (60) on a side of flow forming the surface layer is stamped with a profile lip (68). A fiber suspension flow forming the surface layer toward the profile lip is separated from a fiber suspension flow forming the remaining layers. An independent claim is also included for a system for control of z-anisotropy of a fibrous material web manufactured in a fiber web machine.