FI910288A - Method and apparatus in the press portion of a paper machine for detaching the web from the surface of a press roll - Google Patents

Method and apparatus in the press portion of a paper machine for detaching the web from the surface of a press roll Download PDF

Info

Publication number
FI910288A
FI910288A FI910288A FI910288A FI910288A FI 910288 A FI910288 A FI 910288A FI 910288 A FI910288 A FI 910288A FI 910288 A FI910288 A FI 910288A FI 910288 A FI910288 A FI 910288A
Authority
FI
Finland
Prior art keywords
web
press
transfer
pressure
roll
Prior art date
Application number
FI910288A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI92941B (en
FI910288A0 (en
FI92941C (en
Inventor
Juhani Niskanen
Original Assignee
Valmet Paper Machinery 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 Valmet Paper Machinery Inc filed Critical Valmet Paper Machinery Inc
Publication of FI910288A0 publication Critical patent/FI910288A0/en
Priority to FI910288A priority Critical patent/FI92941C/en
Priority to PCT/FI1992/000014 priority patent/WO1992013133A1/en
Priority to AT92902194T priority patent/ATE155837T1/en
Priority to DE69221123T priority patent/DE69221123T2/en
Priority to CA002099379A priority patent/CA2099379C/en
Priority to EP92902194A priority patent/EP0567484B1/en
Publication of FI910288A publication Critical patent/FI910288A/en
Publication of FI92941B publication Critical patent/FI92941B/en
Application granted granted Critical
Publication of FI92941C publication Critical patent/FI92941C/en
Priority to US08/555,091 priority patent/US5665206A/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0281—Wet presses in combination with a dryer roll
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof

Landscapes

  • Paper (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

Method and device in the press section of a paper machine for detaching the web (W) from a smooth mantle face (18') of a press roll (18). In the method and in the device, a transfer zone (40a; 50a) is employed, over which a press fabric (23) or a particular transfer fabric (44) is passed so as to accomplish a closed draw of the web (W). The transfer zone (40a, 50a) as well as said fabric (23; 44) form a transfer nip (NS) or a transfer zone with the roll face (18'). At the transfer point, the temperature level (T) of the roll face (18') and/or of the web (W) is set or regulated so high that the pressure (pS) of saturated vapour of the water present in connection with the web (W) and with the roll face (18') which corresponds to said temperature level (T) is substantially equally high as, or just little higher than, the pressure (pO) that has been set to prevail in said transfer zone (40a, 50a), said pressure (pO) being preferably lower than the atmospheric pressure.
FI910288A 1991-01-18 1991-01-18 Method and apparatus in the press portion of a paper machine for detaching the web from the surface of a press roll FI92941C (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FI910288A FI92941C (en) 1991-01-18 1991-01-18 Method and apparatus in the press portion of a paper machine for detaching the web from the surface of a press roll
PCT/FI1992/000014 WO1992013133A1 (en) 1991-01-18 1992-01-20 Method and device in the press section of a paper machine for detaching the web from the face of a press roll
AT92902194T ATE155837T1 (en) 1991-01-18 1992-01-20 METHOD AND DEVICE IN THE PRESS SECTION OF A PAPER MACHINE FOR RELEASING THE WEB FROM A PRESS ROLL SURFACE
DE69221123T DE69221123T2 (en) 1991-01-18 1992-01-20 METHOD AND DEVICE IN THE PRESSING PART OF A PAPER MACHINE FOR RELEASING THE TRAIN FROM A PRESS ROLLER SURFACE
CA002099379A CA2099379C (en) 1991-01-18 1992-01-20 Method and device in the press section of a paper machine for detaching the web from the face of a press roll
EP92902194A EP0567484B1 (en) 1991-01-18 1992-01-20 Method and device in the press section of a paper machine for detaching the web from the face of a press roll
US08/555,091 US5665206A (en) 1991-01-18 1995-11-08 Method and device in a press section of a paper machine for detaching a web from a face of a press roll

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI910288 1991-01-18
FI910288A FI92941C (en) 1991-01-18 1991-01-18 Method and apparatus in the press portion of a paper machine for detaching the web from the surface of a press roll

Publications (4)

Publication Number Publication Date
FI910288A0 FI910288A0 (en) 1991-01-18
FI910288A true FI910288A (en) 1992-07-19
FI92941B FI92941B (en) 1994-10-14
FI92941C FI92941C (en) 1995-01-25

Family

ID=8531762

Family Applications (1)

Application Number Title Priority Date Filing Date
FI910288A FI92941C (en) 1991-01-18 1991-01-18 Method and apparatus in the press portion of a paper machine for detaching the web from the surface of a press roll

Country Status (6)

Country Link
EP (1) EP0567484B1 (en)
AT (1) ATE155837T1 (en)
CA (1) CA2099379C (en)
DE (1) DE69221123T2 (en)
FI (1) FI92941C (en)
WO (1) WO1992013133A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI88812C (en) * 1992-03-05 1993-07-12 Valmet Paper Machinery Inc Device for controlling the web's tip drawing tape in a paper machine
DE4322644C1 (en) * 1993-07-07 1994-09-29 Billhofer Maschf Gmbh Device for applying dispersions containing wax
DE4427281A1 (en) * 1994-08-02 1996-02-08 Voith Gmbh J M Threading up fibrous material lines esp. paper making machines
DE19741517A1 (en) * 1997-09-20 1999-03-25 Voith Sulzer Papiermasch Gmbh Process for reducing the adhesion of a moist fibrous web to a rotating roller
FI117981B (en) * 2002-12-20 2007-05-15 Upm Kymmene Corp Pinching arrangement for a paper machine or the like
FI120239B (en) 2008-06-19 2009-08-14 Metso Paper Inc A web forming machine and a method in a web forming machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89085C (en) * 1987-01-23 1993-08-10 Valmet Paperikoneet Oy Regulating procedure for a paper machine press section
FI75890C (en) * 1987-01-23 1988-08-08 Valmet Paperikoneet Oy FOERFARANDE OCH ANORDNING I PRESSPARTIET I EN PAPPERSMASKIN FOER LOESGOERING AV BANAN FRAON YTAN AV EN PRESSVALS.
FI83895C (en) * 1988-04-13 1991-09-10 Valmet Paper Machinery Inc Method and apparatus for press processing a paper web

Also Published As

Publication number Publication date
CA2099379C (en) 2000-04-25
DE69221123T2 (en) 1997-11-20
EP0567484B1 (en) 1997-07-23
FI92941B (en) 1994-10-14
WO1992013133A1 (en) 1992-08-06
CA2099379A1 (en) 1992-07-19
EP0567484A1 (en) 1993-11-03
DE69221123D1 (en) 1997-08-28
ATE155837T1 (en) 1997-08-15
FI910288A0 (en) 1991-01-18
FI92941C (en) 1995-01-25

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MA Patent expired