Randbelastung

System to carry a web through a papermaking/paper finishing machine, where two porous belts carry the web between them, applies pressure to the edges of the belt for separation at the suction roller

Abstract

To carry a fiber web (1) between two air-permeable belts (2, 3), at the separation point where an under-pressure acts on the lower belt, the upper belt is deflected away from the web. At the separation point, where the under-pressure acts on the web and lower belt, a pressure is applied at the web to detach the upper belt. The web transport belt system applies pressure to the edges of the belt to be detached or at the edges of the web, at the separation point. The pressure is applied shortly before the belts are separated. The pressure is applied by compressed air, or mechanically. An Independent claim is also included for a web transport system where the web is carried between two air-permeable belts, has compressed air jets (5) opposite the suction unit (4) to blow compressed air on the belt to be detached, at the web.
Die Erfindung betrifft ein Verfahren zur Führung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn (1), wobei die Faserstoffbahn (1) zwischen zwei luftdurchlässigen Bändern (2, 3) geführt und anschließend ein Band (2) im Bereich einer auf die Faserstoffbahn (1) gerichteten Unterdruckbeaufschlagung des anderen Bandes (3) von der Faserstoffbahn (1) weggeführt wird sowie eine dazugehörige Vorrichtung. DOLLAR A Dabei soll die sichere Führung der Faserstoffbahn (1) beim Wegführen des Bandes (2) dadurch gewährleistet werden, daß im Bereich der Unterdruckbeaufschlagung des einen Bandes (3) ein auf die Faserstoffbahn (1) gerichteter Druck auf das wegzuführende Band (2) ausgeübt wird.

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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    DE-19543111-A1May 22, 1997Voith Sulzer Papiermasch GmbhCompact paper machine press section avoiding over-moistening the web
    US-2780967-AFebruary 12, 1957Beloit Iron WorksPaper-making machines
    US-5438765-AAugust 08, 1995Valmet Paper Machinery Inc.Method and apparatus for eliminating the flutter of a paper web in the dryer section of a papermaking machine between two single felt configurations therein
    US-5933981-AAugust 10, 1999Voith Sulzer Papiermaschinen Gesellschaft MbhDevice and method for stabilizing a continuous paper web in a paper-making machine in the vicinity of a roll
    WO-0003085-A1January 20, 2000Kimberly-Clark Worldwide, Inc.Transfer of a cellulosic web between spaced apart transport means using a moving air as a support

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