paper machine wire and pressing sections with impervious pressin

Details paper machine wire and pressing sections with impervious pressin paper machine wire and pressing sections with impervious pressin

1994-06-17

1995-11-21

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162306, 1623602, 1623603, D21F 304

Patent

active

054683491

ABSTRACT:
A wet portion of a paper machine, including a wire section and a pressing section has a plurality of roll presses. Each roll press includes two rolls defining a press nip. A water impervious belt having a smooth, non-porous surface is disposed in a continuous loop about at least two roll press rolls disposed consecutively with respect to a direction of conveyance of a paper web through the machine. Each press roll is associated with at least one counter roll or one shoe roll defining first and second press nips of the pressing section. The belt deflects about 180.degree. about each of the press rolls.

REFERENCES:
patent: 4173249 (1979-11-01), Holkko et al.
patent: 4440598 (1984-04-01), Koski et al.
patent: 4483745 (1984-11-01), Wicks et al.
patent: 4526655 (1985-07-01), Karvinen et al.
patent: 4976821 (1990-12-01), Laapotti
patent: 5178732 (1993-01-01), Steiner et al.
patent: 5240563 (1993-08-01), Karvinen et al.
patent: 5298124 (1994-03-01), Eklund et al.

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