Headbox of paper machine or such

Details Headbox of paper machine or such Headbox of paper machine or such

2006-06-27

2006-06-27

Halpern, Mark (Department: 1731)

Paper making and fiber liberation

Processes and products

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

C162S259000, C162S343000, C162S336000

Reexamination Certificate

active

07067040

ABSTRACT:
A headbox (10) of a paper machine or such includes a bypass manifold (J1), from which the pulp is conducted by way of pipes (11a1.1, 11a1.2. . . 11a2.1, 11a2.2. . . ) of pipe rows in a set of pipes (11) and an intermediate chamber (E) into a turbulence generator (12), or from the bypass manifold (J1) directly into the turbulence generator and by way of the pipes (12a1.1, 12a1.2, . . . ; 12a2.1, 12a2.2. . . ) of the turbulence generator's (12) pipe rows into a lip cone (K) and further out from the headbox on to a formation wire. The turbulence generator (12) of the headbox includes a fluidization element (14), wherein fluidization is carried out in one stage only and in which structure as little disturbance as possible is then caused to the fluidised flow.

REFERENCES:
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patent: 5746889 (1998-05-01), Huovila et al.
patent: 2003/0155093 (2003-08-01), Lepomaki et al.
patent: 69330 (1985-09-01), None
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patent: 01/21885 (2001-03-01), None
patent: 01/96657 (2001-12-01), None
International Preliminary Examination Report issued in International Patent Application No. PCT/FI01/00553.
International Search Report issued in International Patent Application No. PCT/FI01/00553.
Search report issued in Finnish Priority Application No. 20001404.
Preliminary Amendment and Substitute Specification from U.S. App. No.: 10/088,714.

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