METHOD AND DEVICE FOR REDUCE THE VOLUME OR PRESSURE OF A FLUID THAT IS DRAWN INTO A GAP BY MOVING SURFACES

摘要

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 lea st 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 relative ly 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) fo r bringing the strip which moves on an element (cylinder, roll, rigid guiding element, winding reel) into close contact with said element.