EP2022889A3 - Method and device for online control of fibre orientation cross profile - Google Patents

Method and device for online control of fibre orientation cross profile Download PDF

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Publication number
EP2022889A3
EP2022889A3 EP08160495A EP08160495A EP2022889A3 EP 2022889 A3 EP2022889 A3 EP 2022889A3 EP 08160495 A EP08160495 A EP 08160495A EP 08160495 A EP08160495 A EP 08160495A EP 2022889 A3 EP2022889 A3 EP 2022889A3
Authority
EP
European Patent Office
Prior art keywords
headbox
profile
fiber orientation
online control
cross profile
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.)
Withdrawn
Application number
EP08160495A
Other languages
German (de)
French (fr)
Other versions
EP2022889A2 (en
Inventor
Markus Häußler
Klaus Lehleiter
Erik Forsberg
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2022889A2 publication Critical patent/EP2022889A2/en
Publication of EP2022889A3 publication Critical patent/EP2022889A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D21F1/022—Means for injecting material into flow within the headbox
    • 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

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  • Paper (AREA)

Abstract

Eine Vorrichtung zur Online-Regelung des Faserorientierungsquerprofils einer laufenden Papier- oder Kartonbahn in einer einen Stoffauflauf mit einer Stoffauflaufdüse umfassenden Papiermaschine umfasst wenigstens einen das Faserorientierungsprofil online regelnden geschlossenen Regelkreis, in den als Stelleinrichtung eine Einrichtung zur Einspeisung und/oder zum Abziehen eines jeweiligen vorgebbaren Volumenstroms in bzw. aus den beiden seitlichen Randbereichen der Stoffauflaufdüse des Stoffauflaufs einbezogen ist. Es wird auch ein entsprechendes Verfahren zur Online-Regelung des Faserorientierungsquerprofils angegeben.

Figure imgaf001
An apparatus for the on-line control of the fiber orientation cross-profile of a moving paper or board web in a paper machine comprising a headbox with a headbox comprises at least one closed-loop control of the fiber orientation profile on-line, in which a means for feeding and / or subtracting a respective predeterminable volume flow is used as the setting means is included in or from the two lateral edge regions of the headbox of the headbox. A corresponding method for the on-line control of the fiber orientation transverse profile is also specified.
Figure imgaf001
EP08160495A 2007-07-25 2008-07-16 Method and device for online control of fibre orientation cross profile Withdrawn EP2022889A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710034766 DE102007034766A1 (en) 2007-07-25 2007-07-25 Apparatus and method for on-line control of the fiber orientation cross-profile

Publications (2)

Publication Number Publication Date
EP2022889A2 EP2022889A2 (en) 2009-02-11
EP2022889A3 true EP2022889A3 (en) 2011-12-21

Family

ID=39876821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08160495A Withdrawn EP2022889A3 (en) 2007-07-25 2008-07-16 Method and device for online control of fibre orientation cross profile

Country Status (2)

Country Link
EP (1) EP2022889A3 (en)
DE (1) DE102007034766A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538466A1 (en) * 1984-10-31 1986-05-07 Valmet Oy, Helsinki METHOD AND DEVICE IN THE FABRIC OUTLET OF A PAPER MACHINE FOR CONTROLLING THE SHIFTING OF THE FIBER ORIENTATION IN THE PAPER RAIL
EP0857816A1 (en) * 1997-01-14 1998-08-12 Valmet Corporation Headbox of a paper machine with edge feed arrangements
DE19953225A1 (en) * 1999-11-05 2001-05-23 Voith Paper Patent Gmbh Fiber orientation control in a paper/cardboard web uses pulp flow data at the stock inlet to correct the flow speed and pulp throughput in sections by a diaphragm together with throttles and fluid feed/extraction systems
EP1245725A1 (en) * 2001-03-29 2002-10-02 Andritz AG Method and device for regulating quality parameters of paper-, tissue- and pulp dewatering machines
EP1496150A1 (en) * 2003-07-09 2005-01-12 Voith Paper Patent GmbH Headbox
WO2006003140A1 (en) * 2004-06-30 2006-01-12 Voith Patent Gmbh Headbox for paper machine
EP1619298A2 (en) * 2004-07-21 2006-01-25 Voith Paper Patent GmbH Headbox of a machine for manufacturing a fibrous web, in particular a papier or board web

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8711330D0 (en) 1987-05-14 1987-06-17 Beloit Corp Headbox
JPH03249297A (en) 1990-02-26 1991-11-07 Mitsubishi Heavy Ind Ltd Method for adjusting direction of flow in head box of paper-making machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538466A1 (en) * 1984-10-31 1986-05-07 Valmet Oy, Helsinki METHOD AND DEVICE IN THE FABRIC OUTLET OF A PAPER MACHINE FOR CONTROLLING THE SHIFTING OF THE FIBER ORIENTATION IN THE PAPER RAIL
EP0857816A1 (en) * 1997-01-14 1998-08-12 Valmet Corporation Headbox of a paper machine with edge feed arrangements
DE19953225A1 (en) * 1999-11-05 2001-05-23 Voith Paper Patent Gmbh Fiber orientation control in a paper/cardboard web uses pulp flow data at the stock inlet to correct the flow speed and pulp throughput in sections by a diaphragm together with throttles and fluid feed/extraction systems
EP1245725A1 (en) * 2001-03-29 2002-10-02 Andritz AG Method and device for regulating quality parameters of paper-, tissue- and pulp dewatering machines
EP1496150A1 (en) * 2003-07-09 2005-01-12 Voith Paper Patent GmbH Headbox
WO2006003140A1 (en) * 2004-06-30 2006-01-12 Voith Patent Gmbh Headbox for paper machine
EP1619298A2 (en) * 2004-07-21 2006-01-25 Voith Paper Patent GmbH Headbox of a machine for manufacturing a fibrous web, in particular a papier or board web

Also Published As

Publication number Publication date
EP2022889A2 (en) 2009-02-11
DE102007034766A1 (en) 2009-01-29

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