FI20065056A - Method and apparatus for forming a paper or board web - Google Patents

Method and apparatus for forming a paper or board web Download PDF

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Publication number
FI20065056A
FI20065056A FI20065056A FI20065056A FI20065056A FI 20065056 A FI20065056 A FI 20065056A FI 20065056 A FI20065056 A FI 20065056A FI 20065056 A FI20065056 A FI 20065056A FI 20065056 A FI20065056 A FI 20065056A
Authority
FI
Finland
Prior art keywords
dewatering
forming
zone
wires
initial
Prior art date
Application number
FI20065056A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI120457B (en
FI20065056A0 (en
Inventor
Erkki Ilmoniemi
Original Assignee
Metso Paper Inc
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
Application filed by Metso Paper Inc filed Critical Metso Paper Inc
Priority to FI20065056A priority Critical patent/FI120457B/en
Publication of FI20065056A0 publication Critical patent/FI20065056A0/en
Priority to EP06126500A priority patent/EP1813721B1/en
Priority to DE602006003992T priority patent/DE602006003992D1/en
Priority to AT06126500T priority patent/ATE416274T1/en
Publication of FI20065056A publication Critical patent/FI20065056A/en
Application granted granted Critical
Publication of FI120457B publication Critical patent/FI120457B/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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • 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
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/028—Details of the nozzle section

Landscapes

  • Paper (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Making Paper Articles (AREA)

Abstract

Method and equipment for the forming of a paper or board web. The headbox (17) is sealed in relation to the wires (11, 12) so that the pulp suspension is transferred from the headbox (17) to the forming zone as a closed jet without free boundary surfaces. The forming zone comprises the first dewatering element (23), which is located inside the first wire loop (11), and the second dewatering element (24), which is located inside the second wire loop (12), so that between them, they provide the borders for the initial dewatering zone which narrows in the flow direction. In the initial dewatering zone, water is removed from the pulp suspension through the openings (26, 27) in the cover of the dewatering elements (23, 24). After the initial dewatering zone, the wires (11, 12) are led over the curved cover of the forming shoe (29) while at the same time pressure pulses are exerted on the pulp suspension located between the wires (11, 12) by means of dewatering blades (28) located on the cover of the forming shoe (29). The length (L 0 ) of the initial dewatering zone bordered by the dewatering elements (23, 24) is at the most 50 % of the length (L 1 ) of the forming shoe (29) following it.
FI20065056A 2006-01-27 2006-01-27 Method and apparatus for forming a paper or cardboard web FI120457B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI20065056A FI120457B (en) 2006-01-27 2006-01-27 Method and apparatus for forming a paper or cardboard web
EP06126500A EP1813721B1 (en) 2006-01-27 2006-12-19 Method and equipment for forming of a paper or board web
DE602006003992T DE602006003992D1 (en) 2006-01-27 2006-12-19 Method and device for forming a paper or board web
AT06126500T ATE416274T1 (en) 2006-01-27 2006-12-19 METHOD AND DEVICE FOR FORMING A PAPER OR CARDBOARD WEB

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20065056A FI120457B (en) 2006-01-27 2006-01-27 Method and apparatus for forming a paper or cardboard web
FI20065056 2006-01-27

Publications (3)

Publication Number Publication Date
FI20065056A0 FI20065056A0 (en) 2006-01-27
FI20065056A true FI20065056A (en) 2007-07-28
FI120457B FI120457B (en) 2009-10-30

Family

ID=35883953

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20065056A FI120457B (en) 2006-01-27 2006-01-27 Method and apparatus for forming a paper or cardboard web

Country Status (4)

Country Link
EP (1) EP1813721B1 (en)
AT (1) ATE416274T1 (en)
DE (1) DE602006003992D1 (en)
FI (1) FI120457B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE532154C2 (en) * 2006-10-06 2009-11-03 Metso Paper Inc Double wire press comprising sealing elements for dewatering a fiber suspension
US9333468B2 (en) 2012-09-24 2016-05-10 Abengoa Bioenergy New Technologies, Llc Soak vessels and methods for impregnating biomass with liquid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29702548U1 (en) * 1997-02-14 1997-04-10 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Headbox of a paper machine

Also Published As

Publication number Publication date
EP1813721B1 (en) 2008-12-03
EP1813721A1 (en) 2007-08-01
FI120457B (en) 2009-10-30
FI20065056A0 (en) 2006-01-27
ATE416274T1 (en) 2008-12-15
DE602006003992D1 (en) 2009-01-15

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