ES375800A1 - Improved paper forming arrangement - Google Patents

Abstract

Improvements in paper-making machines and the like, and more particularly in devices for forming a fibrous sheet from a dilute aqueous suspension of co-moving imbricated fibers, exiting downstream of a slit (12), as a jet stream substantially unidirectional, tape-thin, comprising first and second head cylinders (13, 14) mounted to rotate in a horizontal plane, separated by a distance defining an opening (G) extending substantially vertically, stretches of fabric first and second opposites (F1, F2) that circulate substantially at the speed of the jet stream on the first and second head cylinders (13, 14) respectively through an initially close gap in the opening (G) receiving between them the jet stream, and then converging directly through a formation zone and into general parallelism with the fibrous sheet hum it runs between the fabrics, in which parallelism the fabric sections (F1, F2) are maintained while they run together downstream, characterized by the provision of a plurality of substantially aligned arched surfaces (15, 21) arranged in staggered, successively separated current below the opening (G) that define between them a substantially vertically aligned, undulating path, which generally coincides with the direction of the jet stream, each of the arcuate surfaces (15, 21) having a smooth surface that it has a curved work surface (22) to one of the fabric sections (F1, F2), which forces one of the fabric sections towards said parallelism against an opposite area of the other fabric section free of contact with restrictive means, and which guides one of the fabric sections in parallelism through a turn, out of the direction of the jet stream with a relatively fast deflection or deflection regime to extract r the water through, and out of, the other length of fabric. (Machine-translation by Google Translate, not legally binding)