Drainage foil element having two wire bearing portions

Details Drainage foil element having two wire bearing portions Drainage foil element having two wire bearing portions

1977-06-24

1978-10-31

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

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

162374, D21F 148

Patent

active

041233220

ABSTRACT:
A drainage foil providing improved fines retention and drainage stability when used in cooperation with the forming wire of a machine that forms a mat or web from a wet slurry. The foil has two wire-contacting surfaces a fixed distance apart with a suction-forming section and a drainage section between them. Forces effective on the foil during use are balanced so as to minimize torque around the foil mounting means.

REFERENCES:
patent: 2928465 (1960-03-01), Wrist
patent: 3027941 (1962-04-01), Dunlap
patent: 3323982 (1967-06-01), Hill
patent: 3713610 (1973-01-01), Grenier
patent: 3922190 (1975-11-01), Cowan
patent: 3953284 (1976-04-01), Evalahti

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