Apparatus for entraining and directing a wet paper web

Details Apparatus for entraining and directing a wet paper web Apparatus for entraining and directing a wet paper web

B - Operations, Transporting

65

H

92/10

B65H 20/14 (2006.01)

Patent

CA 1263819

- 23 - "APPARATUS FOR ENTRAINING AND DIRECTING A WET PAPER WEB" ABSTRACT Apparatus for entraining and directing a wet paper web in a paper making process comprises a wall or plate defining an airfoil section and planar directing section. A curved wall wrapped around the airfoil section defining there between a narrow channel terminat- ing in a mouth of a slot forms an air passage for direc- tion of air over the airfoil section toward the directing section to form a force under the Coanda effect. Three jet nozzles are arranged respectively at ends of the slot and centrally of the slot for directing the web from a roller toward the Coanda effect. The curved surface terminates at a position forwardly of the center line of the airfoil section so as to reduce the angle through which the air turns in the Coanda effect and thus develop a gentle force. The slot is wider at the center than at the sides to develop a greater force at the center.

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