Method and device for stabilizing the running of a paper web in

Paper making and fiber liberation – Processes and products – Lead strip forming and/or guiding

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Details

162202, 162289, 162306, 1623581, 162361, D21F 142

Patent

active

057208522

ABSTRACT:
A method and device for stabilizing the running of a paper web in a paper machine in connection with a paper guide roll, in particular between a press section and a dryer section. In the method, the paper web is passed over the paper guide roll onto a drying wire or equivalent and negative pressure (suction) in the opening nip of the paper guide roll is lowered until a transition is made to the side of positive pressure in order to press the paper web against the drying wire or equivalent. The device includes a nozzle beam and an air chamber which communicates with a blow air duct. The nozzle beam is placed at the side of the opening nip of the paper guide roll such that the blowing discharged out of a nozzle opening of the nozzle beam is directed at the opening nip in order to press the paper web against the drying wire or equivalent.

REFERENCES:
patent: 3526574 (1970-09-01), Beachler et al.
patent: 4566946 (1986-01-01), Koponen et al.
patent: 4684443 (1987-08-01), Kerttula et al.
patent: 4943351 (1990-07-01), Wedel
patent: 5232555 (1993-08-01), Daunais et al.

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