Method and device for reduce the volume or pressure of a...

B - Operations – Transporting – 65 – H

Patent

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B65H 20/00 (2006.01) B65H 18/26 (2006.01) B65H 23/00 (2006.01)

Patent

CA 2346916

The invention relates to a method and device for reducing the volume or pressure of a fluid which is driven through an opening (3, 17) by moving surfaces. According to said method, the opening (3, 17) is divided in at least two flow channels (5, 6, 14) by means of one or more flexible separation members (4). Each separation member (4) is attached at its rear end relatively to the direction of displacement of said surfaces, and its front flat- finishing end extends inside said opening (3, 17). The inventive method can be advantageously implemented during production and further transformation of strip-shaped materials (paper, cardboard strips, plastic material sheets) for bringing the strip which moves on an element (cylinder, roll, rigid guiding element, winding reel) into close contact with said element.

L'invention concerne un procédé et dispositif pour réduire le volume ou la pression d'un fluide entraîné dans un interstice (3, 17) par des surfaces en mouvement. Selon ce procédé, l'interstice (3, 17) est divisé en au moins deux canaux d'écoulement (5, 6, 14) au moyen d'un ou plusieurs éléments de séparation flexibles (4). Chaque élément de séparation (4) est fixé au niveau de son extrémité arrière dans le sens de déplacement des surfaces, et son extrémité avant, se terminant de façon plate, s'étend à l'intérieur de l'interstice (3, 17). Ce procédé peut être appliqué de manière très avantageuse lors de la production et la transformation ultérieure de matériaux en forme de bandes (bandes de papier, de carton, feuilles de matières plastiques) pour mettre la bande se déplaçant sur un élément (cylindre, rouleau, élément de guidage rigide, enrouleur) en contact très étroit avec ledit élément.

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