Headbox having adjustable flow passages

Details Headbox having adjustable flow passages Headbox having adjustable flow passages

1978-03-13

1981-08-25

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

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

162343, D21F 102, D21F 106

Patent

active

042857678

ABSTRACT:
A headbox for supplying a stock consisting of a generated liquid foam suspension of fibers or a high consistency paper making stock including a slice nozzle having a slice opening and a slice chamber having first and second slice flow passages arranged of a set of stepped surfaces leading to the slice nozzle with one set of the surfaces of the slice chamber mounted on a movable block to increase or decrease the size of the passages of the slice chamber, said stepped surfaces shaped to generate a turbulent expansion and shearing action on the foam for a regenerative process, and a tube bank and header chamber delivering foam to the slice chamber passages.

REFERENCES:
patent: 3716449 (1973-02-01), Gatward et al.
patent: 3798122 (1974-03-01), Appel
patent: 3802960 (1974-04-01), Spengos
patent: 3837999 (1974-09-01), Chung
patent: 3937273 (1976-02-01), Radvan et al.
patent: 4021296 (1977-05-01), Reiner
patent: 4125429 (1978-11-01), Hergert et al.

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