Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1994-07-01
1997-10-07
Lacey, David L.
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
162336, 162343, 162338, D21F 104
Patent
active
056743645
ABSTRACT:
A method and device in the regulation of the headbox of a paper machine/board machine, in which additional flows are introduced into the pulp suspension at different points across the width of the headbox. The concentration of the additional flows is different than the average concentration of the pulp suspension. The additional flows are introduced through additional-flow pipes to the vicinity of inlet openings of turbulence tubes of a turbulence generator. The grammage profile of the web in the direction of width of the web is regulated in the headbox by adjusting the distance of the end of the additional-flow pipe/pipes from the turbulence generator, whereby the amount of the additional flow entering into the additional-flow pipes and, at the same time, the amount of the pulp suspension flow are regulated.
REFERENCES:
patent: 3640063 (1972-02-01), Schmid et al.
patent: 4146425 (1979-03-01), Gutzeit
patent: 4225386 (1980-09-01), Edblom et al.
patent: 4349414 (1982-09-01), Stenberg
patent: 4384922 (1983-05-01), Stotz
patent: 4414062 (1983-11-01), Kirjavainen
patent: 4637439 (1987-01-01), Jeans
patent: 4804441 (1989-02-01), Lyytinen
patent: 4909904 (1990-03-01), Kinzler
patent: 5022965 (1991-06-01), Pitkajarvi
patent: 5092962 (1992-03-01), Koski
patent: 5316383 (1994-05-01), Begemann
Lacey David L.
Padgett Calvin
Valmet Paper Machinery Inc.
LandOfFree
Method and device in the regulation of a headbox does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device in the regulation of a headbox, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device in the regulation of a headbox will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2353817