SINGLE ENDLESS STRANDS AS SUPPORT SURFACES IN VARIOUS SECTIONS OF PAPERMAKING MACHINE HAVING INTEGRATED CONVOLUTIONS

摘要

A porous supporting structure for a fluid-impregnated web or sheet which includes a series of supporting surfaces each of which is composed of a group of adjacent, parallel, machine direction convolutions of a single strand mounted to travel in a path over a roll assembly in a series of repeating convolutions. The supporting surfaces are integrated by intermingling a group of convolutions of one web supporting surface with a second group of convolutions of a second web supporting surface at an unsupported lease area. The web is conveyed from the first web supporting surface across the lease to the second web supporting surface to provide continuous support for the web. By varying the relative speed of travel of the strands forming the various web supporting surfaces, or by varying the angularity between the two integrated web supporting surfaces, the finish effects and degree of dewatering of the web can be varied.