FI982539A - A method and apparatus for forming a cellulosic web - Google Patents

A method and apparatus for forming a cellulosic web Download PDF

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Publication number
FI982539A
FI982539A FI982539A FI982539A FI982539A FI 982539 A FI982539 A FI 982539A FI 982539 A FI982539 A FI 982539A FI 982539 A FI982539 A FI 982539A FI 982539 A FI982539 A FI 982539A
Authority
FI
Finland
Prior art keywords
pulp
wires
value
method comprises
space
Prior art date
Application number
FI982539A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI109210B (en
FI982539A0 (en
Inventor
Risto Savia
Jorma Koskinen
Leoorma Lunden
Esaa Markkanen
Ilkka Pakkala
Original Assignee
Valmet Corp
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 Valmet Corp filed Critical Valmet Corp
Publication of FI982539A0 publication Critical patent/FI982539A0/en
Priority to FI982539A priority Critical patent/FI109210B/en
Priority to AU15623/00A priority patent/AU1562300A/en
Priority to EP99958204A priority patent/EP1153169B1/en
Priority to PCT/FI1999/000967 priority patent/WO2000031337A1/en
Priority to CA002351490A priority patent/CA2351490C/en
Priority to JP2000584137A priority patent/JP4523166B2/en
Priority to AT99958204T priority patent/ATE260360T1/en
Priority to DE69915130T priority patent/DE69915130T2/en
Publication of FI982539A publication Critical patent/FI982539A/en
Application granted granted Critical
Publication of FI109210B publication Critical patent/FI109210B/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
    • 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

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 10 % 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 %.
FI982539A 1998-11-24 1998-11-24 Method and apparatus for forming a cellulose web FI109210B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FI982539A FI109210B (en) 1998-11-24 1998-11-24 Method and apparatus for forming a cellulose web
CA002351490A CA2351490C (en) 1998-11-24 1999-11-24 Method and device for pulp web formation
EP99958204A EP1153169B1 (en) 1998-11-24 1999-11-24 Method and device for pulp web formation
PCT/FI1999/000967 WO2000031337A1 (en) 1998-11-24 1999-11-24 Method and device for pulp web formation
AU15623/00A AU1562300A (en) 1998-11-24 1999-11-24 Method and device for pulp web formation
JP2000584137A JP4523166B2 (en) 1998-11-24 1999-11-24 Pulp web forming method and apparatus
AT99958204T ATE260360T1 (en) 1998-11-24 1999-11-24 METHOD AND DEVICE FOR MAKING PAPER
DE69915130T DE69915130T2 (en) 1998-11-24 1999-11-24 METHOD AND DEVICE FOR PAPER MANUFACTURE

Applications Claiming Priority (2)

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

Publications (3)

Publication Number Publication Date
FI982539A0 FI982539A0 (en) 1998-11-24
FI982539A true FI982539A (en) 2000-05-25
FI109210B FI109210B (en) 2002-06-14

Family

ID=8552972

Family Applications (1)

Application Number Title Priority Date Filing Date
FI982539A FI109210B (en) 1998-11-24 1998-11-24 Method and apparatus for forming a cellulose web

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
ES2287401T3 (en) 2003-11-14 2007-12-16 THE PROCTER & GAMBLE COMPANY POLYMER COMPOSITIONS FOR SUSTAINED RELEASE OF VOLATILE MATERIALS.
EP1795556B1 (en) 2005-12-07 2017-02-15 The Procter and Gamble Company Polymeric compositions for sustained release of volatile materials
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.
CN1114013C (en) * 1996-04-18 2003-07-09 韦尔梅特公司 Method for overall regulation of the headbox and/or the former of a paper machine or equivalent
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
JP4523166B2 (en) 2010-08-11
DE69915130D1 (en) 2004-04-01
CA2351490A1 (en) 2000-06-02
ATE260360T1 (en) 2004-03-15
DE69915130T2 (en) 2004-12-30
FI109210B (en) 2002-06-14
WO2000031337A1 (en) 2000-06-02
FI982539A0 (en) 1998-11-24
EP1153169B1 (en) 2004-02-25
JP2002530547A (en) 2002-09-17
EP1153169A1 (en) 2001-11-14
AU1562300A (en) 2000-06-13
CA2351490C (en) 2007-08-21

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