Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1991-11-07
1992-12-01
Hastings, Karen M.
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
1623583, D21F 306
Patent
active
051677687
ABSTRACT:
A wide area type of wet press for dewatering an endless traveling web, such as paper, wherein a shoe having a curved face is applied to a traveling belt which travels through a high pressure zone between the shoe and a rotating backing roll. The nip line of the most intense nip pressure along the length of contact of the shoe over the backing roll is selectively located, as desired, by pivotally supporting the shoe about two, parallel, longitudinally extending axes which, in turn, are supported on separately controlled hydraulic pistons. The pressure profile of the nip pressure over the face of the shoe can also be altered by controlling the hydraulic pressure in the support pistons.
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patent: 4568423 (1986-02-01), Laapotti
patent: 4581797 (1986-04-01), Lehmann
patent: 4713147 (1987-12-01), Saarinen
patent: 4917768 (1990-04-01), Ilmarinen
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Cronin Dennis C.
Roerig Arnold J.
Beloit Corporation
Campbell Raymond W.
Hastings Karen M.
Mathews Gerald A.
Veneman Dirk J.
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