FREMGANGSMAATE OG ANORDNING FOR I ET BEHANDLINGSANLEGG FOR ET LUFTBAARET, BANEFORMET MATERIALE AA REDUSERE BANENS NEDBOEYNING OVER ANLEGGETS BLAASEKASSER

摘要

METHOD AND DEVICE IN AN INSTALLATION FOR TREATING AIR-BORNWEB MATERIAL PASSING THROUGH THE INSTALLATIONIngemar Karlsson - V?xj?, SwedenAbstractWeb material is carried on air to advance the material in afixed stable floating position through one or more decks of atreating plant, preferably a drier. The air is supplied throughpairs of apertures arranged in the upper surface of blow-boxesdistributed in the conveying path of the material which apertureseject the air in pairs of stream facing away from each other. Toreduce deflection of the material between said pair of aperturesthe space between said apertures is supplied separately with agreat volume of secondary air of the same static pressure as thatprevailing on the upper surface of the material, which secondaryair is taken along by ejector effect by the primary air streamsejected from the apertures of the blow-boxes.