CA2351490A1 - Method and device for pulp web formation - Google Patents

Method and device for pulp web formation Download PDF

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Publication number
CA2351490A1
CA2351490A1 CA002351490A CA2351490A CA2351490A1 CA 2351490 A1 CA2351490 A1 CA 2351490A1 CA 002351490 A CA002351490 A CA 002351490A CA 2351490 A CA2351490 A CA 2351490A CA 2351490 A1 CA2351490 A1 CA 2351490A1
Authority
CA
Canada
Prior art keywords
pulp
wires
value
method comprises
space
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002351490A
Other languages
French (fr)
Other versions
CA2351490C (en
Inventor
Risto Savia
Jorma Koskinen
Leo Lunden
Esa Markkanen
Ilkka Pakkala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valmet Technologies Oy
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2351490A1 publication Critical patent/CA2351490A1/en
Application granted granted Critical
Publication of CA2351490C publication Critical patent/CA2351490C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • D21F1/48—Suction apparatus
    • 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

Landscapes

  • Paper (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

The invention relates to a method and an apparatus for pulp web formation. The method comprises feeding pulp, having a dry content of about 1,5 %, from a headbox (2) into a wedge-shaped converging space (5) defined by two wires (3, 4) or the like, said wires or the like being supported on chamber units (6, 7), including at a given time at least one water-receiving chamber (8), having its pressure adjustable in such a way that the pulp can be maintained at an overpressure in the space (5). The method comprises increasing the dry content of the pulp in the converging space (5) to a value which is at least about % to about 12 %. According to the invention, the method comprises subjecting the pulp present between the wires (3, 4) or the like in the downstream section of the converging space, or in its substantially immediate vicinity, to a compression in perpendicular direction (z direction). In the method, the compression performed in the vicinity of the converging space (5) or its downstream section is used for increasing the dry content of the pulp to a value which is at least about 18 %, preferably to a value which is about 20 %.
CA002351490A 1998-11-24 1999-11-24 Method and device for pulp web formation Expired - Fee Related CA2351490C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI982539 1998-11-24
FI982539A FI109210B (en) 1998-11-24 1998-11-24 Method and apparatus for forming a cellulose web
PCT/FI1999/000967 WO2000031337A1 (en) 1998-11-24 1999-11-24 Method and device for pulp web formation

Publications (2)

Publication Number Publication Date
CA2351490A1 true CA2351490A1 (en) 2000-06-02
CA2351490C CA2351490C (en) 2007-08-21

Family

ID=8552972

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002351490A Expired - Fee Related CA2351490C (en) 1998-11-24 1999-11-24 Method and device for pulp web formation

Country Status (8)

Country Link
EP (1) EP1153169B1 (en)
JP (1) JP4523166B2 (en)
AT (1) ATE260360T1 (en)
AU (1) AU1562300A (en)
CA (1) CA2351490C (en)
DE (1) DE69915130T2 (en)
FI (1) FI109210B (en)
WO (1) WO2000031337A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001036742A2 (en) * 1999-11-17 2001-05-25 Andritz Ag Device for removing water from a fibrous material strip
FI117395B (en) * 2000-11-16 2006-09-29 Metso Paper Inc Apparatus and method for removing water from a cellulosic web
DE60314638T2 (en) 2003-11-14 2008-03-06 The Procter & Gamble Company, Cincinnati Polymeric compositions for sustained release of volatile materials
TR201706056T4 (en) 2005-12-07 2018-03-21 Procter & Gamble Polymeric compositions for the sustained release of volatile substances.
EP2342380A4 (en) * 2008-05-28 2012-04-11 Metso Paper Inc Twin wire press and method for dewatering a fibre suspension
US8236139B1 (en) 2008-06-30 2012-08-07 International Paper Company Apparatus for improving basis weight uniformity with deckle wave control
AT509992B1 (en) 2010-10-27 2012-01-15 Andritz Ag Maschf DEVICE AND METHOD FOR DRYING FIBROUS MATERIAL
JP6245053B2 (en) * 2014-04-23 2017-12-13 王子ホールディングス株式会社 Pulp sheet manufacturing method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823062A (en) * 1972-02-28 1974-07-09 Int Paper Co Twin-wire papermaking employing stabilized stock flow and water filled seal(drainage)boxes
AT348325B (en) * 1977-02-14 1979-02-12 Andritz Ag Maschf PRESS SECTION FOR DEWATERING MACHINES
FR2428682A1 (en) * 1978-06-16 1980-01-11 Stephanois Rech Meca Hydr Cent Diffusion and adsorption coating of substrates - to form hard hexagonal structure base on which lamellar layer is adsorbed
JPS57112495A (en) * 1981-11-06 1982-07-13 Int Paper Co Papermaking apparatus
FI85885C (en) * 1987-11-25 1992-06-10 Tampella Oy Ab FOERFARANDE FOER FORMERING AV EN FIBERBANA I EN PAPPERSMASKIN SAMT EN ANORDNING FOER UTFOERING AV FOERFARANDET.
ATE232255T1 (en) * 1996-04-18 2003-02-15 Metso Paper Inc METHOD FOR CONTROLLING THE CURRENT CASE AND/OR OVERALL FORM OF A PAPER MACHINE OR THE LIKE
US5783045A (en) * 1996-05-06 1998-07-21 Beloit Technologies, Inc. Pulp and linerboard former with improved dewatering

Also Published As

Publication number Publication date
FI982539A (en) 2000-05-25
CA2351490C (en) 2007-08-21
JP4523166B2 (en) 2010-08-11
DE69915130D1 (en) 2004-04-01
EP1153169A1 (en) 2001-11-14
WO2000031337A1 (en) 2000-06-02
ATE260360T1 (en) 2004-03-15
FI109210B (en) 2002-06-14
EP1153169B1 (en) 2004-02-25
JP2002530547A (en) 2002-09-17
DE69915130T2 (en) 2004-12-30
AU1562300A (en) 2000-06-13
FI982539A0 (en) 1998-11-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20191125