Twin wire former

Details Twin wire former Twin wire former

2006-06-27

2006-06-27

Halpern, Mark (Department: 1731)

Paper making and fiber liberation

Apparatus

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

C162S301000, C162S305000, C162S306000, C162S363000, C162S203000

Reexamination Certificate

active

07067042

ABSTRACT:
The present invention relates to a twin wire former in a machine for the production of a fiber web, especially a paper or cardboard web from at least one fiber stock suspension, including a vertical twin wire segment having two wires running over a peripheral area of a turning element, especially a guide roll whose surface is preferably not equipped with suction and is smooth or substantially smooth; and in that at least one separation element, such as a transfer suction box is provided indirectly or immediately following the guide roll that separates the top wire from the bottom wire on which the fibrous web is supported.

REFERENCES:
patent: 1599376 (1926-09-01), Smith
patent: 4100018 (1978-07-01), Wahren et al.
patent: 5395484 (1995-03-01), Odell et al.
patent: 40 14 403 (1991-11-01), None
patent: 0 369 296 (1989-11-01), None
patent: 0 454 989 (1991-03-01), None
patent: 0 471 469 (1991-07-01), None
patent: WO 97/08382 (1997-03-01), None

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