Method and apparatus for ventilation in a multi-cylinder...

Details Method and apparatus for ventilation in a multi-cylinder... Method and apparatus for ventilation in a multi-cylinder...

F - Mech Eng,Light,Heat,Weapons

26

B

34/22

F26B 13/00 (2006.01) D21F 5/04 (2006.01)

Patent

CA 2013219

ABSTRACT OF THE DISCLOSURE Method and apparatus for ventilating pockets in a twin-wire multi-cylinder dryer of a paper machine which comprises upper and lower lines of drying cylinders, an upper wire guided by surfaces of the upper cylinders and upper guide rolls and a lower wire guided by surfaces of the lower cylinders and lower guide rolls, and wherein the web runs between the upper and lower cylinders over an open draw, includes providing the guide rolls with perforated mantles for directing air flows from their interiors into the pockets, and providing blow boxes with nozzles for directing air flows into the pockets.

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