AU5665198A - Method and apparatus for control of a headbox in a paper machine - Google Patents

Method and apparatus for control of a headbox in a paper machine

Info

Publication number
AU5665198A
AU5665198A AU56651/98A AU5665198A AU5665198A AU 5665198 A AU5665198 A AU 5665198A AU 56651/98 A AU56651/98 A AU 56651/98A AU 5665198 A AU5665198 A AU 5665198A AU 5665198 A AU5665198 A AU 5665198A
Authority
AU
Australia
Prior art keywords
feed
headbox
headboxes
profiles
property
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.)
Abandoned
Application number
AU56651/98A
Inventor
Juha Antero Kniivila
Petri Nyberg
John Shakespeare
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 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 Valmet Oy filed Critical Valmet Oy
Publication of AU5665198A publication Critical patent/AU5665198A/en
Abandoned legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0027—Paper-making control systems controlling the forming section
    • 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
    • D21F1/08—Regulating consistency
    • 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

Landscapes

  • Paper (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Amplifiers (AREA)

Abstract

Method of controlling cross-direction property profiles of a paper web (5). The method employs a control system (150) for regulating a headbox (3) or headboxes (3a, 3b) of a paper machine. Said property profile or profiles is/are measured by a measurement system (40, 140). The measurement signal thus obtained is supplied to said control system (150). The headbox (3) or headboxes (3a, 3b) is/are supplied with at least two feed streams (11, 12) which contain feedstuffs for the paper suspended in aqueous solution. The feed streams are divided into feed zones in cross-machine sections of the headbox (3) or headboxes (3a, 3b). Said feed zones are each supplied with combinatory streams of said feed streams (11, 12; 11, 12, 13; 11, 12, 13, 14). A property, such as, concentration and/or consistency and/or brightness and/or color and/or equivalent, of one or more feedstuffs of said feed streams (11, 12; 11, 12, 13; 11, 12, 13, 14) is measured. The thus obtained measurement signal is fed to said control system (150). Based on said measurements of the property profile or profiles and based on said measurements of said property and based on setpoint values, control signals are formed. By means of them, an actuator (10) or an actuator combination (10a, 10b) situated at each of said feed zones of the headbox (3) or headboxes (3a, 3b) is regulated, by which actuator or actuator combination combinatory proportions of different feed streams (11, 12) supplied to the feed zone are affected to achieve a desired property profile or profiles of the web (5).
AU56651/98A 1997-01-24 1998-01-16 Method and apparatus for control of a headbox in a paper machine Abandoned AU5665198A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI970294 1997-01-24
FI970294A FI100345B (en) 1997-01-24 1997-01-24 Method and apparatus for paper machine headbox adjustment
PCT/FI1998/000032 WO1998032916A1 (en) 1997-01-24 1998-01-16 Method and apparatus for control of a headbox in a paper machine

Publications (1)

Publication Number Publication Date
AU5665198A true AU5665198A (en) 1998-08-18

Family

ID=8547797

Family Applications (1)

Application Number Title Priority Date Filing Date
AU56651/98A Abandoned AU5665198A (en) 1997-01-24 1998-01-16 Method and apparatus for control of a headbox in a paper machine

Country Status (10)

Country Link
EP (1) EP0970277B1 (en)
JP (1) JP2001508839A (en)
CN (1) CN1093201C (en)
AT (1) ATE252179T1 (en)
AU (1) AU5665198A (en)
BR (1) BR9807110A (en)
CA (1) CA2278647C (en)
DE (1) DE69818982T2 (en)
FI (1) FI100345B (en)
WO (1) WO1998032916A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843727A1 (en) * 1998-09-24 2000-03-30 Voith Sulzer Papiertech Patent Process and headbox system to improve the consistency cross profile of a fiber web
FI112961B (en) 1998-11-26 2004-02-13 Metso Paper Inc Method and apparatus for measuring retention profile and controlling retention in a paper machine / cardboard machine
FI115647B (en) * 1998-12-23 2005-06-15 Metso Paper Inc Method of controlling an inlet box in a paper machine / board machine and a construction of an inlet box in a paper machine / board machine
DE19906062A1 (en) * 1999-02-12 2000-08-17 Voith Sulzer Papiertech Patent Method and device for producing a material web
US6294051B1 (en) 1999-04-13 2001-09-25 Kimberly-Clark Worldwide, Inc. Method for improving the edge strength of a fibrous mat
FI991108A (en) * 1999-05-14 2000-11-15 Valmet Corp Method and apparatus for the manufacture of calendered paper or calendered paperboard
FI114224B (en) * 2000-03-02 2004-09-15 Metso Paper Inc A method and an arrangement for adjusting the consistency of an input pulp mixture on a headbox of a papermaking machine
JP4913510B2 (en) * 2006-09-05 2012-04-11 横河電機株式会社 Simulation method, fiber orientation control method, and fiber orientation control device
DE102007049775B3 (en) * 2007-10-17 2009-02-26 Siemens Ag Control device and method for basis weight control and paper machine equipped therewith
DE102007056499B4 (en) * 2007-11-22 2012-03-01 Norske Skog Walsum Gmbh Method and device for demolition detection on paper-making and processing machines
DE102008000778A1 (en) * 2008-03-20 2009-09-24 Voith Patent Gmbh Headbox for a paper or board machine
FI121888B (en) 2008-08-12 2011-05-31 Metso Paper Inc Procedure for optimizing the fiber web properties
FI126614B (en) * 2009-04-07 2017-03-15 Valmet Automation Oy Modeling the property of paper, cardboard or cardboard
FI122113B (en) 2010-02-03 2011-08-31 Metso Paper Inc A method and a headbox for improving the transverse property profile of a fibrous web
US8728276B2 (en) * 2010-05-20 2014-05-20 Honeywell International Inc. Apparatus and method for controlling curling potential of paper, paperboard, or other product during manufacture
EP2784214B1 (en) * 2013-03-28 2015-09-16 Valmet Technologies, Inc. Feed water supply for a multi-layer headbox
WO2016035313A1 (en) * 2014-09-05 2016-03-10 セイコーエプソン株式会社 Sheet manufacturing device and sheet manufacturing method
CN104480769B (en) * 2014-11-04 2016-08-24 陕西科技大学 A kind of dilution water waterpower type flow box dilution water control valve device and control method
EP3088604B1 (en) * 2015-04-28 2020-03-25 Valmet Technologies Oy Method and system for the optimization of properties of a multilayer fiber web in fiber web manufacture
JP6481238B2 (en) * 2015-07-02 2019-03-13 デュプロ精工株式会社 Paper machine
SE540916C2 (en) * 2016-09-15 2018-12-18 Valmet Oy An apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus
CA3055434C (en) * 2017-03-06 2022-03-08 Honeywell Limited Method and apparatus for designing model-based control having spatial robustness for multiple-array cross-direction (cd) web manufacturing or processing systems or other systems
CN109358585B (en) * 2018-10-30 2020-06-19 上海交通大学 Global optimization control method for cascade headbox paper machine
DE102021124326A1 (en) 2021-09-21 2022-10-06 Voith Patent Gmbh Method and device for producing a fibrous web

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI85731C (en) * 1989-06-01 1997-08-20 Valmet Paper Machinery Inc Reglersystem i en pappers- eller kartonmaskin
FI81848C (en) * 1989-07-17 1990-12-10 Valmet Paper Machinery Inc Method for controlling and on-line measurement of the fiber orientation of a web produced on a paper machine
FI92229C (en) * 1993-07-01 1994-10-10 Valmet Paper Machinery Inc Method and device for headbox adjustment
US5771174A (en) * 1995-12-21 1998-06-23 Measurex Corporation Distributed intelligence actuator controller with peer-to-peer actuator communication

Also Published As

Publication number Publication date
EP0970277A1 (en) 2000-01-12
BR9807110A (en) 2000-04-25
EP0970277B1 (en) 2003-10-15
FI970294A0 (en) 1997-01-24
DE69818982T2 (en) 2004-08-12
ATE252179T1 (en) 2003-11-15
DE69818982D1 (en) 2003-11-20
JP2001508839A (en) 2001-07-03
FI100345B (en) 1997-11-14
CN1244225A (en) 2000-02-09
CN1093201C (en) 2002-10-23
WO1998032916A1 (en) 1998-07-30
CA2278647A1 (en) 1998-07-30
CA2278647C (en) 2007-11-20

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