Patent ID: 6533900
Filing Date: 2003-03-18
Classification: C04B,D21F

Abstract:
In a paper machine in which a paper web is transferred from a wet wire in a former section to a pick-up fabric, arranged in a loop, in a press section in a running direction of the web, including a pick-up point located on the wet wire, at least one cutter device arranged in association with the wet wire before said pick-up point in the running direction of the web for separating an edge strip from at least one edge of the web, and means for transferring the web from the wet wire to the pick-up fabric at said pick-up point, the improvement comprising:means for applying a pressure difference to the at least one edge strip through the wet wire or the pick-up fabric at or after said pick-up point to cause said at least one edge strip to either follow the wet wire or become separated from the pick-up fabric after the pick-up point and structured and arranged inside said loop of said pick-up fabric after said pick-up point wherein said means for transferring the web from the wet wire to the pick-up fabric comprises a pick-up suction roll having two ends, said pick-up suction roll comprising a suction zone, and blow zones arranged in said suction zone at the ends of said pick-up suction roll; and wherein said edge strip is separated from the at least one edge of said web at a cut groove and wherein said pick-up suction roll further comprises a mantle surrounding said suction zone having perforations formed therein, and a pair of end seals arranged in said suction zone having a set of ducts through which air can be passed from said suction zone, through said perforations of said mantle, and to said cut groove of said at least one edge strip.