Double nip hydrofoil

Details Double nip hydrofoil Double nip hydrofoil

1982-03-29

1984-05-08

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

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

162352, D21F 154

Patent

active

044472960

ABSTRACT:
An improved hydrofoil for use in a paper forming apparatus, such as a fourdrinier, is provided with a nip on both the trailing edge and leading edge. The nip on the trailing edge is provided in a standard manner for desired drainage, while the nip in the leading edge of the foil is provided to "pump" water back into the paper material to break up wire side flocs.

REFERENCES:
patent: 3377236 (1968-04-01), Roecker
patent: 3874998 (1975-04-01), Johnson
patent: 4306934 (1981-12-01), Seppanen
Thorp, "Hydrofoil Design . . . ," Paper Trade Journal, vol. 149, No. 2, Jan. 11, 1965, pp. 37-41.

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