EP0978587B1 - Procédé pour ajuster le profil transversal uniform d'une bande de papier - Google Patents

Procédé pour ajuster le profil transversal uniform d'une bande de papier Download PDF

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Publication number
EP0978587B1
EP0978587B1 EP99108743A EP99108743A EP0978587B1 EP 0978587 B1 EP0978587 B1 EP 0978587B1 EP 99108743 A EP99108743 A EP 99108743A EP 99108743 A EP99108743 A EP 99108743A EP 0978587 B1 EP0978587 B1 EP 0978587B1
Authority
EP
European Patent Office
Prior art keywords
profile
throughput
nozzle outlet
outlet gap
setting
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.)
Expired - Lifetime
Application number
EP99108743A
Other languages
German (de)
English (en)
Other versions
EP0978587A2 (fr
EP0978587A3 (fr
Inventor
Ulrich Begemann
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 Paper 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0978587A2 publication Critical patent/EP0978587A2/fr
Publication of EP0978587A3 publication Critical patent/EP0978587A3/fr
Application granted granted Critical
Publication of EP0978587B1 publication Critical patent/EP0978587B1/fr
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
    • 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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/06—Regulating pulp flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/09—Uses for paper making sludge
    • Y10S162/10—Computer control of paper making variables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/09—Uses for paper making sludge
    • Y10S162/10—Computer control of paper making variables
    • Y10S162/11—Wet end paper making variables

Definitions

  • the invention relates to a method for adjustment a uniform property cross profile one Paper web with respect to formation, basis weight and Fiber orientation in a paper machine with the help a section-wise material density-influenced Headbox with adjustable nozzle outlet gap.
  • the problem with the prior art is therefore a method of operating a headbox describe that on the one hand the known good quality of the basis weight cross section and Fiber orientation cross profile obtained by a controlled headbox reached can be, but at the same time also positive Influence on the formation cross profile.
  • the invention is a method for Fiber orientation correction changes in local Volume flows used and the orifice for Formation optimization.
  • Another advantageous training of The method according to the invention enters a combination with the use of the drainage rate influencing chemicals. This has the big one Advantage that not only influences the formation, but also on the leaf composition can be taken, since the binding forces of Wash-out affected fine and fillers can be influenced.

Landscapes

  • Paper (AREA)

Claims (9)

  1. Procédé pour ajuster le profil transversal uniforme des propriétés d'une bande de papier en ce qui concerne la formation, le grammage et l'orientation des fibres dans une machine à papier, à l'aide d'une caisse de tête influencée par sections par la densité de la matière, avec une fente de sortie des buses réglable, caractérisé par les étapes de Procédé selones:
    1.1 mesure et ajustage du profil transversal de grammage désiré en influençant la densité de matière par sections dans la caisse de tête,
    1.2 ensuite ajustage du profil transversal de la formation en influençant le débit spécifique de suspension de matière par sections à la fente de sortie des buses,
    1.3 simultanément ou ensuite, agrandissement de la fente de sortie des buses aux endroits avec un débit de suspension de matière accru et inversement en vue d'obtenir un profil transversal d'orientation des fibres désiré.
  2. Procédé selon la revendication l'une, caractérisé en ce que la variation de la fente de sortie des buses est effectuée proportionnellement à la variation du débit spécifique de suspension de matière.
  3. Procédé selon la revendication l'une, caractérisé en ce que la variation de la fente de sortie des buses est effectuée de telle manière qu'il existe, après l'ajustage, un profil transversal de vitesse désiré à la fente de sortie des buses.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une des étapes de procédé précitées est incorporée dans un circuit de régulation.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on ajoute en plus des produits chimiques retardant et/ou accélérant l'assèchement, de préférence dans la région de bord.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce l'ajustage des débits spécifiques de suspension de matière est obtenu par l'extraction ou l'addition de liquide par sections.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on effectue une addition de matière de charge, de préférence par du liquide ajouté par sections, dans les régions à débit accru.
  8. Procédé selon l'une des revendications 6 - 7, caractérisé en ce que l'addition ou l'extraction de liquide est opérée dans les régions de bord, en regardant dans la direction z.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on utilise un former à deux toiles.
EP99108743A 1998-08-05 1999-05-03 Procédé pour ajuster le profil transversal uniform d'une bande de papier Expired - Lifetime EP0978587B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19835295 1998-08-05
DE19835295A DE19835295A1 (de) 1998-08-05 1998-08-05 Verfahren zur Einstellung eines gleichmäßigen Eigenschaftsquerprofils einer Papierbahn

Publications (3)

Publication Number Publication Date
EP0978587A2 EP0978587A2 (fr) 2000-02-09
EP0978587A3 EP0978587A3 (fr) 2000-11-22
EP0978587B1 true EP0978587B1 (fr) 2003-04-23

Family

ID=7876491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99108743A Expired - Lifetime EP0978587B1 (fr) 1998-08-05 1999-05-03 Procédé pour ajuster le profil transversal uniform d'une bande de papier

Country Status (4)

Country Link
US (1) US6203665B1 (fr)
EP (1) EP0978587B1 (fr)
AT (1) ATE238449T1 (fr)
DE (2) DE19835295A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078925A1 (de) 2011-07-11 2013-01-17 Voith Patent Gmbh Verfahren zur Einstellung eines gleichmäßigen Eigenschaftsquerprofilseiner Faserstoffbahn

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056138A1 (de) * 2000-11-13 2002-05-23 Voith Paper Patent Gmbh Pressenpartie
DE10118508A1 (de) * 2001-04-12 2002-10-17 Voith Paper Patent Gmbh Verfahren und Anlage zur Herstellung einer Faserstoffbahn
FI20012175A (fi) * 2001-11-09 2003-05-10 Metso Paper Automation Oy Menetelmä ja laitteisto viiraosan toiminnan säätämiseksi
US20150292158A1 (en) * 2012-09-28 2015-10-15 Voith Patent Gmbh Method for controlling the formation of a fiber web of a fiber or paper producing process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514554C3 (de) * 1984-09-19 1998-01-08 Escher Wyss Gmbh Stoffauflauf-Vorrichtung für eine Papiermaschine und Verfahren zu deren Betrieb
DE4239845C2 (de) * 1992-11-05 1998-12-03 Voith Gmbh J M Verfahren zur Messung der Auswirkung von Verstellungen am Stoffauflauf und zur Korrektur des Flächengewichts- und Faserorientierungs-Querprofils
US5560807A (en) * 1995-03-29 1996-10-01 Beloit Technologies, Inc. Headbox additive injection system
US5944957A (en) * 1997-03-14 1999-08-31 Valmet Corporation Regulations system in a paper machine for controlling variation of the basis weight of the paper in the machine direction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078925A1 (de) 2011-07-11 2013-01-17 Voith Patent Gmbh Verfahren zur Einstellung eines gleichmäßigen Eigenschaftsquerprofilseiner Faserstoffbahn

Also Published As

Publication number Publication date
DE59905149D1 (de) 2003-05-28
EP0978587A2 (fr) 2000-02-09
DE19835295A1 (de) 2000-02-10
ATE238449T1 (de) 2003-05-15
EP0978587A3 (fr) 2000-11-22
US6203665B1 (en) 2001-03-20

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