Abstract:
In the method, the web (1) to be treated is directed to run from a press nip (8) and treatment mixture is pressed into the web at this nip of rolls (8). The treatment mixture is distributed prior to directing the web into the nip from the spray nozzles to at least one side of the web (1) in such an amount that in the nip the treatment mixture is still wet. The present invention relates to a method and arrangement for treating a fiber web, the arrangement comprising applying a sizing mixture, a coating or the like treatment mixture onto especially board webs. The invention can also be used for paper webs and other corresponding fiber webs. The arrangement comprises at least one press nip (8), means (1) for directing the web (1) into the press nip (8) and means for distributing the wet treatment mixture so that a pool is formed at least between the nip formed by the means (8) forming the nip and the web (1). It further comprises means (20) for measuring the height of the surface of the pool and means for adjusting the height of the surface for controlling the penetration of the treatment material.
Abstract:
The invention relates to a guide roll for a web forming machine. The guide roll (15, 15') includes a shell (10) of a sheet material, with end pieces (11) at both of its ends. In addition, in each end piece (11) there is an end plate (13) , with a protruding shaft (14) in it for a bearing arrangement (12) . The end plate (13) and the protruding shaft (14) are arranged as separate pieces. In addition, there is at least one shaped plate piece (19) between the end plate (13) and the protruding shaft (14), separate in the axial direction from the point of contact between the end plate (13) and the protruding shaft (14). The invention also relates to a method for manufacturing and using the guide roll (15, 15 ').