Press section in a paper machine

Details Press section in a paper machine Press section in a paper machine

1996-06-28

1998-06-02

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

1623583, D21F 304

Patent

active

057593558

ABSTRACT:
A press section in a paper machine including a first press nip formed between an upper roll and a lower roll whereby a paper web to be dewatered is passed through the first press nip on support of two press felts. The press section includes at least a second and a third press nip formed in connection with a smooth-faced center roil. A press felt is passed through the second and third press nips formed in connection with the center roll. The lower roll in the first nip is a metal-mantle lower roll which has a diameter substantially larger than the diameter of the upper roll in the first nip.

REFERENCES:
patent: 3718959 (1973-03-01), Vailas
patent: 4483745 (1984-11-01), Wicks et al.
patent: 4484982 (1984-11-01), Majaniemi
patent: 4767501 (1988-08-01), Laapotti
patent: 4976821 (1990-12-01), Laapotti
patent: 5091056 (1992-02-01), Autio
patent: 5120399 (1992-06-01), Filzen
patent: 5120400 (1992-06-01), Laapotti
patent: 5468349 (1995-11-01), Schiel

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