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WO2005078189A3 - Control method and control system to adjust a machine directional thickness of a fibre web - Google Patents

Control method and control system to adjust a machine directional thickness of a fibre web Download PDF

Info

Publication number
WO2005078189A3
WO2005078189A3 PCT/FI2005/000079 FI2005000079W WO2005078189A3 WO 2005078189 A3 WO2005078189 A3 WO 2005078189A3 FI 2005000079 W FI2005000079 W FI 2005000079W WO 2005078189 A3 WO2005078189 A3 WO 2005078189A3
Authority
WO
WIPO (PCT)
Prior art keywords
fibre web
adjust
control system
control method
machine directional
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.)
Ceased
Application number
PCT/FI2005/000079
Other languages
French (fr)
Other versions
WO2005078189A2 (en
Inventor
Tapio Maeenpaeae
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
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Publication of WO2005078189A2 publication Critical patent/WO2005078189A2/en
Publication of WO2005078189A3 publication Critical patent/WO2005078189A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/06—Indicating or regulating the thickness of the layer; Signal devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure
    • D21G1/004—Regulating the pressure
    • D21G1/0046—Regulating the pressure depending on the measured properties of the calendered web

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

Control method and control system to adjust a machine directional thickness of a fibre web, when the film-strip (W) to be calendered goes through a set of rollers (10, 11) of a calender (5) of a fibre web machine, set of rollers comprises one or more roller nips (N). According to the invention for calculating set values of surface temperatures of chill rollers (10) and nip-specific line loads there is utilized a model of compression of the fibre web to control and adjust the compression.
PCT/FI2005/000079 2004-02-13 2005-02-07 Control method and control system to adjust a machine directional thickness of a fibre web Ceased WO2005078189A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20045038A FI119113B (en) 2004-02-13 2004-02-13 A control method and system for controlling the thickness of the fiber web in the machine line
FI20045038 2004-02-13

Publications (2)

Publication Number Publication Date
WO2005078189A2 WO2005078189A2 (en) 2005-08-25
WO2005078189A3 true WO2005078189A3 (en) 2005-10-06

Family

ID=31725805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2005/000079 Ceased WO2005078189A2 (en) 2004-02-13 2005-02-07 Control method and control system to adjust a machine directional thickness of a fibre web

Country Status (2)

Country Link
FI (1) FI119113B (en)
WO (1) WO2005078189A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7484686B2 (en) * 2006-07-21 2009-02-03 The Procter & Gamble Company Process for winding a web substrate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429455A1 (en) * 1994-08-19 1996-02-22 Kleinewefers Gmbh Continuous control of pressure in paper-processing press
WO2002022949A1 (en) * 2000-09-18 2002-03-21 Metso Paper, Inc. Cross-directional control of a paper web

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429455A1 (en) * 1994-08-19 1996-02-22 Kleinewefers Gmbh Continuous control of pressure in paper-processing press
WO2002022949A1 (en) * 2000-09-18 2002-03-21 Metso Paper, Inc. Cross-directional control of a paper web

Also Published As

Publication number Publication date
FI20045038A0 (en) 2004-02-13
WO2005078189A2 (en) 2005-08-25
FI20045038L (en) 2005-08-14
FI119113B (en) 2008-07-31

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