Multi-ply headbox for a papermaking machine

Details Multi-ply headbox for a papermaking machine Multi-ply headbox for a papermaking machine

1988-01-28

1989-04-25

Hastings, Karen

Paper making and fiber liberation

Apparatus

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

162336, 162344, 162347, D21F 102, D21F 106

Patent

active

048245240

ABSTRACT:
In a multi-ply headbox, the nozzle chamber is subdivided by rigid partition walls into a number of nozzle chambers, and the slice openings or outlet slices are adjustable independently of one another. This is accomplished by providing a pivotable mounting of the partition wall or walls in a guide block, for instance, such pivotable mounting being accomplished by a substantially cylindrical shell or cup bearing structure. The desired pivotable movement or adjustment of the rigid partition wall can be undertaken by an inclined groove-cam guide arrangement effective at a projection of the partition wall or by pressure cushions, such as pressure hoses effective at both sides of the projection.

REFERENCES:
patent: 3598696 (1971-10-01), Beck
patent: 3645843 (1972-02-01), Schmaeng
patent: 4070238 (1978-01-01), Wahren
patent: 4181568 (1980-01-01), Pfaler
patent: 4358342 (1982-11-01), Nuttall
patent: 4372816 (1983-02-01), Wolf et al.
patent: 4543162 (1985-09-01), Hildebrand

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