Extended nip prepress for a paper web

Details Extended nip prepress for a paper web Extended nip prepress for a paper web

1995-06-02

1997-04-15

Hastings, Karen M.

Paper making and fiber liberation

Processes and products

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

162210, 1623583, 162305, D21F 302

Patent

active

056205660

ABSTRACT:
A prepress for a paper web in a paper machine including a load shoe which is pressed against a backing element, preferably a vacuum roll, by a load pressure generating by a medium, preferably liquid, which at the same time acts as a lubrication medium in the prepress. The load shoe is in direct engagement with a water permeable wire upon which the paper web is supported.

REFERENCES:
patent: 3853698 (1974-12-01), Mohr
patent: 4556454 (1985-12-01), Dahl et al.
patent: 4568423 (1986-02-01), Laapotti
patent: 4570314 (1986-02-01), Holik et al.
patent: 4917768 (1990-04-01), Ilmarinen
patent: 4923570 (1990-05-01), Steiner et al.
patent: 4976820 (1990-12-01), Laapotti
patent: 5389205 (1995-02-01), Pajula et al.

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