Wet press nip with nonrotating adjustable belt exit guides

Details Wet press nip with nonrotating adjustable belt exit guides Wet press nip with nonrotating adjustable belt exit guides

1988-03-07

1990-03-20

Hastings, Karen M.

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

162273, 162358, D21F 302

Patent

active

049099035

ABSTRACT:
A paper machine includes a double-felt (or single-felt) wet press. Two press elements, for instance two rolls, whose axes lie in a press plane, form a press nip with each other. Two endless felt belts, and between them the paper web from which the water is to be removed, pass through said nip. Beyond the press nip the paper web travels, free of the felt belts, to the next station of the paper machine. Each of the two felt belts travels beyond the press nip over a guide element, which can be a guide roll or a nonrotating deflector, whose position is displaceable parallel to the press plane. The arrangement is operated as follows: The angle between the paper web and the wetter felt is set to a smaller value during the initial licking-up process than during the subsequent continuous operation. On the other hand, the angle between the paper web and the drier felt is set to a larger value during the initial licking-up process than during the subsequent continuous operation.

REFERENCES:
patent: 3547776 (1970-12-01), Curtis
patent: 3607626 (1971-09-01), Nilsson
patent: 4272317 (1981-06-01), Roerig
patent: 4483745 (1984-11-01), Wicks et al.
patent: 4503765 (1985-03-01), Schiel
patent: 4662992 (1987-05-01), Mirsberger
patent: 4673461 (1987-06-01), Roerig et al.
Evans,"More Than 100 Machines are to be Equipped with Super Wet Presses" Pulp and Paper, Jan. 1989, pp. 129-131.

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