Wet section for a twin wire papermaking machine

Details Wet section for a twin wire papermaking machine Wet section for a twin wire papermaking machine

1991-11-19

1994-02-01

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162203, 162300, D21F 100

Patent

active

052829332

ABSTRACT:
The wet section of a twin wire papermaking machine is provided with an open forming roll at the lower wire and with the combination of a suction box at the lower wire and a vacuum suction box at the upper wire. Furthermore, by selecting the elevational position or level of the individual wire sections there can be obtained particularly advantageous conditions for the operation of the papermaking machine throughout a wide field of application, especially heavy types of paper at relatively low operating velocities of the papermaking machine. Gap-former and hybrid-former constructions of the papermaking machine are possible.

REFERENCES:
patent: 4176005 (1979-11-01), Bubik et al.
patent: 4417950 (1983-11-01), Bubik et al.
patent: 4609435 (1986-09-01), Tissari
patent: 4830709 (1989-05-01), Turner et al.
patent: 4925531 (1990-05-01), Koski
patent: 5019214 (1991-05-01), Meinecke et al.

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