Method and device for evening out the basic weight cross section

Details Method and device for evening out the basic weight cross section Method and device for evening out the basic weight cross section

1993-11-24

1996-11-12

Lamb, Brenda A.

Paper making and fiber liberation

Processes and products

Reclamation, salvage or reuse of materials

162264, D21F 166

Patent

active

055736424

ABSTRACT:
To regulate the basis weight cross section of the fiber suspension dispensed by the outlet of a headbox of a paper making machine onto the screen or screens of the following forming section, the headbox is sectioned across the width of the machine with individual first sections of fiber suspension across the width. The fiber suspension on the screen(s) in the following forming section is drained and the drained filtrate is collected in second sections respectively generally corresponding to the first sections of the headbox. The removed sectioned filtrate is recycled to the respective sections of the headbox and is mixed with the suspension normally entering the headbox to regulate and make more uniform the basis weight cross section of the fiber suspension.

REFERENCES:
patent: 3149027 (1964-09-01), Mih

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