Multiply headbox nozzle with heavy end convergence

Details Multiply headbox nozzle with heavy end convergence Multiply headbox nozzle with heavy end convergence

1996-10-23

1998-09-08

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162344, 162347, D21F 102

Patent

active

058040374

ABSTRACT:
A nozzle of a multilayer headbox wherein the headbox includes a nozzle for distributing the stock suspension on a wire. The nozzle is subdivided by at least one machine-wide fin, the fin forming with the nozzle at least two machine-wide nozzle ducts. At least the mean value of the clearance of at least one nozzle duct diminishes steadily in the flow direction, the percentage decrease of the clearance in the fluidically essential area of the nozzle being at least twice as large as in the starting area of the nozzle.

REFERENCES:
patent: 4104116 (1978-08-01), Koskimies
patent: 4221635 (1980-09-01), Kurtz et al.
patent: 4361467 (1982-11-01), Bubik et al.
patent: 4384922 (1983-05-01), Stotz
patent: 4566945 (1986-01-01), Ewald et al.
patent: 4765868 (1988-08-01), Fujiwara
patent: 4906336 (1990-03-01), Weisshuhn

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