Paper machine twin-wire former with dewatering limiting blade de

Details Paper machine twin-wire former with dewatering limiting blade de Paper machine twin-wire former with dewatering limiting blade de

1996-03-25

1999-02-16

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162300, 162352, D21F 154

Patent

active

058716173

ABSTRACT:
In order to prevent the lowering of yield of fibers of stock which is pinched by two wires and being transferred, specific dewatering blades are disposed on each of the wires are used. Blade sets are disposed on two wires 1, 2 forming loops to pinch stock 7 and running therealong. The blades of one blade set are dewatering limiting blades 20, each having a plane portion 20a to support the wires 1, 2 and an inclined face 20b disposed on the wire entering side of said plane portion 20a and forming a space of a wedge shape facing the wire face and enlarging toward the upstream side in the wire running direction. The blades of the other blade set are dewatering blades 21, each having a plane portion 21a to support the wires 1, 2 and an edge 21b to scrape water toward the upstream side of said plane portion 21a. The plane portion 21a having the edge 21b is disposed opposite to the space of a wedge shape.

REFERENCES:
patent: 3573159 (1971-03-01), Sepall
patent: 3874998 (1975-04-01), Johnson
patent: 4321108 (1982-03-01), Goddard et al.
patent: 4919760 (1990-04-01), Kerttula
patent: 4999087 (1991-03-01), Ebihara et al.
patent: 5061347 (1991-10-01), Bibik et al.
patent: 5078835 (1992-01-01), Schiel et al.
patent: 5320713 (1994-06-01), Bubik et al.
patent: 5389206 (1995-02-01), Buck et al.

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