Papermaking machines

Details Papermaking machines Papermaking machines

1979-01-10

1980-06-10

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

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

162300, 162352, D21F 136, D21H 106

Patent

active

042071445

ABSTRACT:
A papermaking machine is shown with an inner traveling screen and an outer traveling screen which are led towards each other to form a generally layered arrangement therebetween during a region of their joint travel and, in such region, the inner and outer screens are caused to pass over a portion of a water extracting or dewatering roller; a water collection apparatus situated outside of the roller serves to collect water centrifuged from the screens passing over the roller; and a preliminary water extraction zone preceeds the roller and such zone extends over a portion of, for example, a generally horizontal section of the inner screen.

REFERENCES:
patent: 3201305 (1965-08-01), Webster
patent: 3726758 (1973-04-01), Parker et al.
patent: 3772140 (1973-11-01), Kobayashi
patent: 3876498 (1975-04-01), Justus
patent: 3985612 (1976-10-01), Watanabe
patent: 4055461 (1977-10-01), Turunen

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