Suction box

Details Suction box Suction box

1997-10-31

1999-10-26

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

1623602, 162374, D21F 300

Patent

active

059721707

ABSTRACT:
A suction box for use in a press arrangement in a machine for producing a paper or cardboard web. The suction box includes at least one suction side suctioning the fibrous pulp sheet onto a transport side of at least one felt belt. The suction box further includes at least one non-suction side and at least one slit. A vacuum is created by having air blown out of at least one slit. The vacuum occurs along the felt belt in a run direction of the felt belt. The slit is positioned at an edge of at least one non-suction side of the suction box. The suction box may be disposed on an exit side of a press slit of the press arrangement. The press slit is adapted to treat the fibrous pulp sheet. At least one felt belt is guided, simultaneously with the fibrous pulp sheet, through the press slit. Upon exiting the press slit, the fibrous pulp sheet is suctioned onto at least one felt belt by the suction box.

REFERENCES:
patent: 4526655 (1985-07-01), Karvinen et al.
patent: 4551203 (1985-11-01), Eskelinen
patent: 4628618 (1986-12-01), Virta et al.
patent: 4698919 (1987-10-01), Wedel
patent: 5019213 (1991-05-01), Virta et al.
patent: 5238535 (1993-08-01), Kraft
patent: 5503716 (1996-04-01), Kivimaa et al.
patent: 5833810 (1998-11-01), Laapotti

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