Electromagnetic extended nip press

Details Electromagnetic extended nip press Electromagnetic extended nip press

1986-05-06

1987-11-03

Bashore, S. Leon

Paper making and fiber liberation

Apparatus

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

1623601, 100118, 100153, 100917, D21F 302, D21F 306

Patent

active

047041919

ABSTRACT:
Extended nip presses for papermaking machines and the like are provided with electromagnets immediately adjacent the press nip to create or augment the nip pressures or loads. The electromagnets have massive, wide large areas, establishing a concentrated magnetic field between conforming opposite sides of the entire nip area eliminating gaps heretofore encountered in magnetic presses. Non-magnetic belts convey wet webs through the nips of dewatering presses and dry web calendering presses can have the webs directly engage a calender roll conveying the web through the nip.

REFERENCES:
patent: 4287021 (1981-09-01), Justus et al.
patent: 4290353 (1981-09-01), Pav et al.
patent: 4485540 (1984-12-01), Riihinen

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