CA2017010A1 - Press section of a paper or board machine - Google Patents

Press section of a paper or board machine

Info

Publication number
CA2017010A1
CA2017010A1 CA2017010A CA2017010A CA2017010A1 CA 2017010 A1 CA2017010 A1 CA 2017010A1 CA 2017010 A CA2017010 A CA 2017010A CA 2017010 A CA2017010 A CA 2017010A CA 2017010 A1 CA2017010 A1 CA 2017010A1
Authority
CA
Canada
Prior art keywords
roll
press
nip
centre
web
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
CA2017010A
Other languages
French (fr)
Other versions
CA2017010C (en
Inventor
Seppo Tavi
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
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 CA2017010A1 publication Critical patent/CA2017010A1/en
Application granted granted Critical
Publication of CA2017010C publication Critical patent/CA2017010C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D21F3/04—Arrangements thereof

Landscapes

  • Paper (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The invention concerns a press section of a paper or board machine, comprising a number of rolls (1,11,22,32,44,70) which form press nips (N1,N2,N3,N4) that dewater the web (in) with each other, the web being arranged to run through said nips. Of the rolls at least one roll (1;70) is a smooth-faced so-called centre roll, which forms a press nip (N2,N3;N4) with at least one other press roll (11,32;44), over which a press felt (10,30;40), which has been formed as an endless loop, is passed to absorb water out of the web (in) into said press felt (10,30;40). The centre roll (1;70) in accordance with the invention is a variable-crown roll, which comprises a metallic roll mantle (2;71) arranged revolving on a stationary roll axle (3;72). The roll includes at least one set of crown-variation means (4,5;73), which are arranged to load the roll mantle (2;71) in the direction of the nip plane (K2,K3;K4) of the centre roll (1;70) and the roll (11,32;44) that forms a press nip (N2,N3;N4) with said centre roll so as to regulate the profile of linear load in said nip (N2,N3;N4).
CA002017010A 1989-05-30 1990-05-17 Press section of a paper or board machine Expired - Lifetime CA2017010C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI892625 1989-05-30
FI892625A FI86753C (en) 1989-05-30 1989-05-30 Press section for a paper or cardboard machine

Publications (2)

Publication Number Publication Date
CA2017010A1 true CA2017010A1 (en) 1990-11-30
CA2017010C CA2017010C (en) 1995-07-18

Family

ID=8528534

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002017010A Expired - Lifetime CA2017010C (en) 1989-05-30 1990-05-17 Press section of a paper or board machine

Country Status (6)

Country Link
EP (1) EP0401190B1 (en)
CN (1) CN1048813A (en)
AT (1) ATE125894T1 (en)
CA (1) CA2017010C (en)
DE (1) DE69021277T2 (en)
FI (1) FI86753C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008003A1 (en) * 1990-10-31 1992-05-14 Beloit Corporation Paper web heating on a press roll
DE4140879A1 (en) * 1991-12-11 1993-06-17 Voith Gmbh J M PRESS RELEASE
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
DE19654325A1 (en) * 1996-12-24 1998-06-25 Voith Sulzer Papiermasch Gmbh Press section of a paper-making machine
WO2018206216A1 (en) * 2017-05-10 2018-11-15 Voith Patent Gmbh Device and method for producing a fibrous web

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193792B (en) * 1961-06-30 1965-05-26 Textilmaschinen Eduard Kuester Roller for the pressure treatment of webs
US3477907A (en) * 1966-03-09 1969-11-11 Beloit Corp Press arrangement for papermaking machine
CH607635A5 (en) * 1976-06-14 1978-09-29 Escher Wyss Ag
DE3117787A1 (en) * 1981-05-06 1982-12-09 J.M. Voith Gmbh, 7920 Heidenheim Press section of a paper machine having a granite roll arranged therein
DE3808293C2 (en) * 1988-03-12 1994-08-18 Voith Gmbh J M Long nip press roll
US4889048A (en) * 1988-04-13 1989-12-26 Miller Ray R High heat flux roll and press utilizing same
DE3815278A1 (en) * 1988-05-05 1989-11-16 Voith Gmbh J M PRESS RELEASE OF A MACHINE FOR THE PRODUCTION OF A FIBROUS MATERIAL SHEET, IN PARTICULAR PAPER SHEET

Also Published As

Publication number Publication date
FI86753B (en) 1992-06-30
ATE125894T1 (en) 1995-08-15
FI892625A (en) 1990-12-01
EP0401190A3 (en) 1992-01-02
CA2017010C (en) 1995-07-18
DE69021277T2 (en) 1996-01-11
EP0401190A2 (en) 1990-12-05
CN1048813A (en) 1991-01-30
FI892625A0 (en) 1989-05-30
EP0401190B1 (en) 1995-08-02
DE69021277D1 (en) 1995-09-07
FI86753C (en) 1992-10-12

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202