Wire part of a machine for the manufacture of fibrous material w

Details Wire part of a machine for the manufacture of fibrous material w Wire part of a machine for the manufacture of fibrous material w

1995-06-06

1997-07-15

Czaja, Donald E.

Paper making and fiber liberation

Processes and products

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

162209, 162210, 162217, 162264, 162300, 162301, 162307, 162310, D21F 100, D21F 902

Patent

active

056479581

ABSTRACT:
A wire part of a machine for the production of continuous fibrous material webs, especially a papermaking machine, includes two continuous wire belts which together form a twin-wire zone. At least one supporting element having a supporting surface is disposed in the region of the twin-wire zone. At least a part of the supporting surface provides a supporting region which supports a first wire belt on its inner surface and a second wire belt on its outer surface. At least one formation box is provided and is disposed in the supporting region. The formation box is designed in such a way that, in the region of the inner surface of the second wire belt in the formation box, pressure values can be adjusted from a reduced pressure to an excess pressure acting on the inner surface of the second wire belt. The formation box extends in the direction of movement of the wire part over at least a part of the supporting region.

REFERENCES:
patent: 3565757 (1971-02-01), Jordansson
patent: 3846232 (1974-11-01), Kankaanpaa
patent: 3997390 (1976-12-01), Kankaanpaa
patent: 4116763 (1978-09-01), Stoz et al.
patent: 4153504 (1979-05-01), Justus
patent: 4154645 (1979-05-01), Kankaanpaa162133

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