Multilayer headbox

Details Multilayer headbox Multilayer headbox

1995-11-13

1997-07-08

Chin, Peter

Paper making and fiber liberation

Apparatus

Automatic control

162259, 162343, 162344, 162347, 162DIG10, 162DIG11, D21F 102

Patent

active

056456891

ABSTRACT:
A multilayer headbox for the introduction of at least two fiber suspension streams to the forming section of a paper manufacturing machine includes a nozzle chamber further defined by two stream guide walls which end at an outlet gap and by two side walls. At least one lamella is provided in the nozzle chamber, this lamella keeping at least two fiber suspension streams separated from each other through the region of the outlet gap. The lamella includes a body, preferably made of plastic, and a tip made of a hard material. The tip is either a strip or a coating having a sharp tip-edge integrated into the body of the lamella.

REFERENCES:
patent: 4617091 (1986-10-01), Rodal et al.
patent: 4891100 (1990-01-01), Hildebrand
patent: 4909904 (1990-03-01), Kinzler
patent: 5316383 (1994-05-01), Begemann et al.

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