Multi-layer headbox

Details Multi-layer headbox Multi-layer headbox

2005-11-08

2005-11-08

Chin, Peter (Department: 1731)

Paper making and fiber liberation

Processes and products

Multi-layer waterlaid webs or sheets

C162S216000, C162S336000, C162S343000

Reexamination Certificate

active

06962646

ABSTRACT:
Multi-layer headbox for a paper machine that includes a plurality of nozzle chambers having outlet gaps located at nozzle chamber ends. Each of the plurality of nozzle chambers are assigned to different layers, and at least one of the plurality of nozzle chambers has a length in a flow direction that is different from a length of at least one other of the plurality of nozzle chambers. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

REFERENCES:
patent: 4225386 (1980-09-01), Edblom et al.
patent: 4376012 (1983-03-01), Bergstrom
patent: 4376014 (1983-03-01), Bergstrom
patent: 4445974 (1984-05-01), Stenberg
patent: 4543162 (1985-09-01), Hildebrand
patent: 5431785 (1995-07-01), Bubik et al.
patent: 6059929 (2000-05-01), Dahl
patent: 2824608 (1979-01-01), None
patent: 3227218 (1984-01-01), None
patent: 0581051 (1994-02-01), None
patent: 1597809 (1981-09-01), None
patent: 2119824 (1983-11-01), None

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