Method and apparatus for web forming

Details Method and apparatus for web forming Method and apparatus for web forming

1984-07-02

1985-11-19

Alvo, Steve

Paper making and fiber liberation

Processes and products

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

162300, 162301, 162306, D21F 304, D21F 902, D21F 1102

Patent

active

045540527

ABSTRACT:
A method and apparatus for forming a web wherein a fiber suspension from a head box is fed on a section of a forming wire formed by a first, substantially horizontal dewatering zone, and where the web being formed is thereafter led to a second dewatering zone where an upper wire is caused to cover said web, and both wires together with the web between them are led over a turning member. In the twin wire dewatering zone the wires bend upwards. After the turning member the web runs further linearly between the wires obliquely upwards. The web and the lower wire run around a pick-up suction roll and the upper wire leaves the web. The dewatering in the dewatering zones occurs only in one direction, i.e. through the forming wire.

REFERENCES:
patent: 3150037 (1964-09-01), Lee
patent: 3846233 (1974-11-01), Kankaanpaa
patent: 4100018 (1978-07-01), Wahren et al.
patent: 4172759 (1979-10-01), Kankaanpaa
patent: 4176005 (1979-11-01), Bubik et al.
patent: 4257844 (1981-03-01), Schmitt et al.
patent: 4417950 (1983-11-01), Bubik et al.

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