ATE155837T1 - METHOD AND DEVICE IN THE PRESS SECTION OF A PAPER MACHINE FOR RELEASING THE WEB FROM A PRESS ROLL SURFACE - Google Patents

METHOD AND DEVICE IN THE PRESS SECTION OF A PAPER MACHINE FOR RELEASING THE WEB FROM A PRESS ROLL SURFACE

Info

Publication number
ATE155837T1
ATE155837T1 AT92902194T AT92902194T ATE155837T1 AT E155837 T1 ATE155837 T1 AT E155837T1 AT 92902194 T AT92902194 T AT 92902194T AT 92902194 T AT92902194 T AT 92902194T AT E155837 T1 ATE155837 T1 AT E155837T1
Authority
AT
Austria
Prior art keywords
web
press
transfer
pressure
paper machine
Prior art date
Application number
AT92902194T
Other languages
German (de)
Inventor
Juhani Niskanen
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
Application granted granted Critical
Publication of ATE155837T1 publication Critical patent/ATE155837T1/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

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.
AT92902194T 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 ATE155837T1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE155837T1 true ATE155837T1 (en) 1997-08-15

Family

ID=8531762

Family Applications (1)

Application Number Title Priority Date Filing Date
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

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
FI910288A0 (en) 1991-01-18
CA2099379C (en) 2000-04-25
FI92941B (en) 1994-10-14
CA2099379A1 (en) 1992-07-19
EP0567484A1 (en) 1993-11-03
DE69221123D1 (en) 1997-08-28
DE69221123T2 (en) 1997-11-20
FI92941C (en) 1995-01-25
FI910288A (en) 1992-07-19
WO1992013133A1 (en) 1992-08-06
EP0567484B1 (en) 1997-07-23

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee