Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1997-01-06
1998-02-24
Chin, Peter
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
162208, 162217, D21F 124
Patent
active
057208530
ABSTRACT:
In a method for forming a sheet from a fiber-water suspension, the fiber-water suspension is supplied on a traveling bottom wire at a first zone thereof to dewater the fiber-water suspension. Subsequently, the suspension is introduced between the bottom wire at a second zone and a top wire, and dewatering is effected. The sheet is further caused to travel around a sheet-forming roll while keeping the sheet in contact therewith by the bottom wire at a third zone thereof, and reformation of the sheet is carried out. Finally, the sheet on the bottom wire is caused to travel up to a fourth zone thereof to effect a further dewatering with a fourth dewatering device disposed adjacent to the bottom wire at the fourth zone thereof, whereby a final stage of sheet formation is carried out. An apparatus for carrying out the above method is also disclosed.
REFERENCES:
patent: 3190790 (1965-06-01), Ploetz et al.
patent: 3357880 (1967-12-01), Curtis
patent: 4532008 (1985-07-01), Creagan et al.
patent: 5395484 (1995-03-01), Odell et al.
Chin Peter
Tokushu Paper Mfg. Co., Ltd.
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