Wire part for forming a multi-ply fiber web

Details Wire part for forming a multi-ply fiber web Wire part for forming a multi-ply fiber web

1997-12-10

2000-12-12

Fiorilla, Christopher A.

Paper making and fiber liberation

Apparatus

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

162132, 162304, D21F 100

Patent

active

061593419

ABSTRACT:
A wire section for forming a multi-ply fiber web. The wire section includes a first belt which advances a first fiber ply toward a couch roll defining a combining section. A twin-wire zone of the wire section includes first and second wires between which a second fiber ply is initially formed in a gap former. The second wire separates from the first wire and then the first wire supporting the second fiber ply meets the first belt supporting the first fiber ply at the couch roll of the combining section to form the multi-ply fiber web. The twin-wire part is arranged upstream of the combining section along the running direction of the first belt. The second fiber ply runs on the first wire into the combining section at an angle less than 90.degree. with respect to the belt entering the combining section. The path of the wires from the forming roll to the combining section is disclosed. A suction box or arrangement holds the second fiber ply to the first wire when the first and second wires separate. Dewatering foils press on the wires moving through the twin-wire zone.

REFERENCES:
patent: 3985612 (1976-10-01), Watanabe
patent: 4154645 (1979-05-01), Kankaanpaa 162133
DuoFormer Top--a new Former for the Production of Top Plies of Packaging Papers by G. Halmschlager, TAPP 97 Nashville, Mittwoch, Oct. 8, 1997.
Weitkamper, K.: 1. Blattbildungsbereich. In: Das Papier, 1991, 45. Jg., H. 10A, S.V97-V106.
Schmidt. S., Liuttu. P.: Former Fur die Herstellung mehrlagiger Bahnen. In: Wochenblatt fur Papierfabrikation 23/24, 1977, S. 975-978, 980; Abb. 5.

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