Headbox for the metered addition of a fluid medium into a...

Details Headbox for the metered addition of a fluid medium into a... Headbox for the metered addition of a fluid medium into a...

2005-05-10

2005-05-10

Dillon, Jr., Joe (Department: 3651)

Paper making and fiber liberation

Apparatus

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

C162S216000, C162S258000

Reexamination Certificate

active

06890408

ABSTRACT:
Headbox for one of a paper and cardboard machine includes at least one material suspension supply running a width of the machine. At least one turbulence producer has at least one conduit through which a material suspension flows. At least one metered addition point is located in the conduit for introducing a fluid medium. A headbox nozzle is located downstream from the at least one turbulence producer for delivering the material suspension. A portion of a flow resistance located downstream of the metered addition point is at least approximately 50% of a total flow resistance of the at least one conduit.

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