Press roll for paper machines

Details Press roll for paper machines Press roll for paper machines

1990-01-18

1991-05-07

Sewell, Paul T.

Presses

Concurrent pressing and conveying

Roll type

100168, 100169, 291162, 29123, B30B 304, B21B 1302

Patent

active

050127306

ABSTRACT:
Press roll with a tubular cylinder, featuring on each of its two ends a roll head with a journal, specifically for use in a roll press consisting of the press roll and a backing roll with controlled deflection, for the treatment of web type material such as a paper web or the like. The inside surface of the tubular cylinder is so shaped across the web width that the shape of the flex line of the tubular cylinder will approximate during operation the flex line of the roll shell of the backing roll. This yields a press roll having a relatively thin-walled tubular cylinder which is lightweight. Nonetheless, an extensively constant line force is achieved in the press gap of the roll press across the web width.

REFERENCES:
patent: 1759192 (1930-05-01), Fulk
patent: 1763124 (1930-06-01), Barber
patent: 2787956 (1957-04-01), Kirby et al.
patent: 2970339 (1961-02-01), Hausman
patent: 3019511 (1962-02-01), Hornbostel
patent: 3161125 (1964-12-01), Hornbostel
patent: 4253392 (1981-03-01), Brandon et al.
patent: 4768050 (1988-08-01), Beery
Excerpt from Wochenblatt fuer Papierfabrikation, 11/12 1988, "Roll Covers for Wide Nip Presses".

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