ATE416274T1 - METHOD AND DEVICE FOR FORMING A PAPER OR CARDBOARD WEB - Google Patents

METHOD AND DEVICE FOR FORMING A PAPER OR CARDBOARD WEB

Info

Publication number
ATE416274T1
ATE416274T1 AT06126500T AT06126500T ATE416274T1 AT E416274 T1 ATE416274 T1 AT E416274T1 AT 06126500 T AT06126500 T AT 06126500T AT 06126500 T AT06126500 T AT 06126500T AT E416274 T1 ATE416274 T1 AT E416274T1
Authority
AT
Austria
Prior art keywords
dewatering
forming
zone
wires
initial
Prior art date
Application number
AT06126500T
Other languages
German (de)
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
Application granted granted Critical
Publication of ATE416274T1 publication Critical patent/ATE416274T1/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)
  • Making Paper Articles (AREA)
  • Diaphragms For Electromechanical Transducers (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.
AT06126500T 2006-01-27 2006-12-19 METHOD AND DEVICE FOR FORMING A PAPER OR CARDBOARD WEB ATE416274T1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE416274T1 true ATE416274T1 (en) 2008-12-15

Family

ID=35883953

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06126500T ATE416274T1 (en) 2006-01-27 2006-12-19 METHOD AND DEVICE 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 Papiermasch Gmbh Headbox of a paper machine

Also Published As

Publication number Publication date
FI20065056A (en) 2007-07-28
DE602006003992D1 (en) 2009-01-15
FI120457B (en) 2009-10-30
FI20065056A0 (en) 2006-01-27
EP1813721A1 (en) 2007-08-01
EP1813721B1 (en) 2008-12-03

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