Headbox with concave auxiliary blade

Details Headbox with concave auxiliary blade Headbox with concave auxiliary blade

1990-10-04

1991-07-30

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162344, D21F 102

Patent

active

050357735

ABSTRACT:
Use of a headbox with an auxiliary blade having a concave edge reduces the deflection required to modify the basis weight profile of a wet sheet formed in papermaking apparatus.

REFERENCES:
patent: 4154649 (1979-05-01), Stotz et al.
patent: 4280870 (1981-07-01), Bubik et al.
patent: 4373993 (1983-02-01), Fujiwara
patent: 4731163 (1988-03-01), Ilmoniemi
patent: 4915789 (1990-04-01), Munch et al.
Fourdrinier Papermaking (1963); Lockwood Trade Journal Co.; p. 60 and Cover Sheet.
Tappi Notes; 1986, Wet End Operation Seminar; pp. 61, 64 & 68 and Cover Sheet.
Paper Machine Crew Operating Manual; J. Mardon et al., Revised First Ed. (1963); Cover Sheet and 5 selected pages.

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