FORFARANDE OCH ANORDNING FOR LOSGORING AV EN TISSUEBANA FRAN EN PICK-UP-VEVNAD OCH FOR OVERFORING AV DENSAMMA TILL EN GENOMSTROMNINGSTORK

• Main Authors: M HUOSTILA, T HAAPSAARI
• Format: Patent
• Language: Swedish
• Published: 26.10.1981
• Subjects: METHODS OF PRODUCING PAPER THEREON; PAPER-MAKING; PAPER-MAKING MACHINES; PRODUCTION OF CELLULOSE; TEXTILES

A method and apparatus in a paper making machine for transferring a web from a pick-up fabric to a flow-through drying wire for transport of the wire supported web to a flow-through dryer cylinder including passing a section of the flow-through drying wire over the web supported by the pick-up fabric thereby defining a sandwich structure of the drying wire, the web and the pick-up fabric. A first vacuum is applied by a first vacuum member on the sandwich structure from the flow-through drying wire side over a narrow first detaching zone. The direction of the pick-up fabric with respect to the flow-through drying wire is deviated and a second vacuum is applied by a second vacuum member over a second detaching zone subsequent to the first detaching zone in the direction of web travel from the drying wire side thereof thereby securing the web on the flow-through drying wire. The pick-up fabric may thus comprise either a felt or wire structure.