Patent ID: 7294236
Filing Date: 2007-11-13
Classification: D21F,D21G

Abstract:
1. An arrangement for controlling the web in a press section of a paper of board machine, which press section includes at least one press nip, which is formed of two press rolls set opposite to each other, two fabrics arranged to travel through the press nip, which are arranged to transport the web being manufactured on the paper or board machine, a suction roll arranged after the press nip, for transferring the web to the desired fabric, when the web is travelling being between the fabrics between the press nip and the suction roll, and a suction apparatus in connection with the suction roll, which is arranged before and/or after the suction roll in connection with a closing throat and/or an opening throat formed by one of the fabrics and the suction roll, and in which there is a cover equipped with suction openings, and which is arranged in connection with the fabrics, characterized in that the suction apparatus includes at least one suction case, which is arranged in the closing throat and/or opening throat in both edges of the fabric in order to create a suction effect in a narrow area of both edges of the web compared to the full width of the web, and the suction case includes side seals extending, as a continuation of the cover, for a distance from the point of contact of the fabric and the suction roll, in order to create an essentially continuous suction effect between the suction case and the suction roll.