FI913855A - INLOPPSLAODA. - Google Patents

INLOPPSLAODA. Download PDF

Info

Publication number
FI913855A
FI913855A FI913855A FI913855A FI913855A FI 913855 A FI913855 A FI 913855A FI 913855 A FI913855 A FI 913855A FI 913855 A FI913855 A FI 913855A FI 913855 A FI913855 A FI 913855A
Authority
FI
Finland
Prior art keywords
nozzle space
speed profile
suspension
substance suspension
nozzle
Prior art date
Application number
FI913855A
Other languages
Finnish (fi)
Other versions
FI913855A0 (en
Inventor
Alfred Bubik
Matthias Reich
Elmer Weisshuhn
Original Assignee
Escher Wyss Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6412185&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI913855(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Escher Wyss Gmbh filed Critical Escher Wyss Gmbh
Publication of FI913855A0 publication Critical patent/FI913855A0/en
Publication of FI913855A publication Critical patent/FI913855A/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/026—Details of the turbulence section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/06—Regulating pulp flow

Landscapes

  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Dental Preparations (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Control Of Water Turbines (AREA)

Abstract

The proposed headbox is such that, during operation, the substance suspension, when it enters the nozzle space (3), has a speed profile (7) which assumes higher values towards the lateral edges (12) of the nozzle space than in the remaining region. By guiding part of the substance suspension away from the edge regions of the nozzle space, the speed profile at the outlet gap of the nozzle space, where a suspension jet is formed, is controlled in the desired way, in particular made uniform. The essential advantages are a favourable control behaviour and the provision of a desired fibre orientation. <IMAGE>
FI913855A 1990-08-14 1991-08-14 INLOPPSLAODA. FI913855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4025675A DE4025675C2 (en) 1990-08-14 1990-08-14 Headbox

Publications (2)

Publication Number Publication Date
FI913855A0 FI913855A0 (en) 1991-08-14
FI913855A true FI913855A (en) 1992-02-15

Family

ID=6412185

Family Applications (1)

Application Number Title Priority Date Filing Date
FI913855A FI913855A (en) 1990-08-14 1991-08-14 INLOPPSLAODA.

Country Status (4)

Country Link
EP (1) EP0471194B1 (en)
AT (1) ATE116393T1 (en)
DE (2) DE4025675C2 (en)
FI (1) FI913855A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234940C2 (en) * 1992-10-16 1994-04-07 Voith Gmbh J M Headbox with basis weight cross profile control by local concentration change
WO1995008024A1 (en) * 1993-09-17 1995-03-23 Beloit Technologies, Inc. A method for controlling the orientation of fibers
DE19953225A1 (en) * 1999-11-05 2001-05-23 Voith Paper Patent Gmbh Fiber orientation control in a paper/cardboard web uses pulp flow data at the stock inlet to correct the flow speed and pulp throughput in sections by a diaphragm together with throttles and fluid feed/extraction systems
DE10331040A1 (en) * 2003-07-09 2005-01-27 Voith Paper Patent Gmbh Papermaking assembly fibre suspension headbox has throttle control of dilution mechanism in outer margin
RU209785U1 (en) * 2021-10-25 2022-03-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный лесотехнический университет" Hydrodynamic damper absorber of pulp pressure pulsations

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434923A (en) * 1965-08-04 1969-03-25 Beloit Corp Headbox of a papermaking machine
DE3514554C3 (en) * 1984-09-19 1998-01-08 Escher Wyss Gmbh Headbox device for a paper machine and method for its operation
US4687548A (en) * 1984-10-31 1987-08-18 Valmet Oy Method and apparatus for controlling distortion of fibre orientation in a paper web
FI73766C (en) * 1985-12-13 1987-11-09 Ahlstroem Oy INLOPPSLAODA FOER PAPPERSMASKIN. TRANSFERRED PAEIVAEMAEAERAE-FOERSKJUTET DATUM PL 14 ç 17.12.85.

Also Published As

Publication number Publication date
ATE116393T1 (en) 1995-01-15
EP0471194A1 (en) 1992-02-19
FI913855A0 (en) 1991-08-14
DE4025675A1 (en) 1992-02-20
EP0471194B1 (en) 1994-12-28
DE4025675C2 (en) 1994-10-20
DE59104034D1 (en) 1995-02-09

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Legal Events

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Owner name: VOITH SULZER PAPIERMASCHINEN GMBH