Device and method for stabilizing a continuous paper web in a pa

Details Device and method for stabilizing a continuous paper web in a pa Device and method for stabilizing a continuous paper web in a pa

1997-12-05

1999-08-10

Bennett, Henry

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

34457, 34114, 34116, 34119, 34122, 34125, D21F 500, F26B 1102

Patent

active

059339810

ABSTRACT:
In the device disclosed, a paper web is carried on a belt and stabilized by an underpressure produced by a box opposite the roll, the paper web being sucked by the underpressure against the belt. Located in the box, immediately following the underpressure zone, may be a pressure zone which assists to transfer the paper web to the roll. In an alternative embodiment, a fan can be avoided. Instead the air entrained by the rapidly running belt is deflected by a wedge-shaped deflector and passed over a slit to generate an underpressure inside the box.

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patent: 4893741 (1990-01-01), Heinzmann
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patent: 5438765 (1995-08-01), Tyrmi et al.
patent: 5509215 (1996-04-01), Koirnanen et al.
patent: 5515619 (1996-05-01), Kahl et al.
patent: 5560123 (1996-10-01), Eskelinen
patent: 5689897 (1997-11-01), Schiel

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