EP2223748B1 - Verfahren und Anlage zum Aufbringen einer Suspension auf eine Materialbahn - Google Patents

Verfahren und Anlage zum Aufbringen einer Suspension auf eine Materialbahn Download PDF

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Publication number
EP2223748B1
EP2223748B1 EP10153943.5A EP10153943A EP2223748B1 EP 2223748 B1 EP2223748 B1 EP 2223748B1 EP 10153943 A EP10153943 A EP 10153943A EP 2223748 B1 EP2223748 B1 EP 2223748B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
supply line
air
suspension
air mixture
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.)
Not-in-force
Application number
EP10153943.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2223748A1 (de
Inventor
Manfred Diebel
Rijad Martinovic
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.)
Paperchine GmbH
Original Assignee
Paperchine 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 Paperchine GmbH filed Critical Paperchine GmbH
Priority to PL10153943T priority Critical patent/PL2223748T3/pl
Publication of EP2223748A1 publication Critical patent/EP2223748A1/de
Application granted granted Critical
Publication of EP2223748B1 publication Critical patent/EP2223748B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/50—Spraying or projecting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge

Definitions

  • the invention relates to a method for applying a suspension, in particular coating color, starch, binder, glue, impregnating agent or the like surface coating fluids, on the running surface of a material web, such as a paper web, by spraying by means of nozzles.
  • pulp which is about 99% water
  • the wire section of a paper machine From the endless sieve, which transports the paper pulp, runs off a very large part of the water and the paper structure is created.
  • the pulp is sprayed with a solids content of 0.4 to 1.2% on the moving screen or an already formed paper web.
  • Several layers of the suspension are sprayed in succession and the moisture is largely removed in subsequent process steps by vacuum, pressing and drying.
  • coatings for example coating colors or starch, are then applied to the paper web.
  • the EP 0 435 904 B1 describes the coating of paper with a slurry having the material to be applied to the web and a solid material wherein the slurry is disrupted into a mist.
  • the mist contains the solid particles in suspension and is applied via a nozzle from a cloud chamber on the paper web.
  • Object of the present invention is therefore to propose a method of the type mentioned, in which an undisturbed and uniform Order can also be made of highly viscous Festsloffhaftigen suspensions, in particular coating colors or starch, on a continuous web of material, in particular a paper web.
  • the suspension Due to the water vapor / air mixture, the suspension is repeatedly washed off the walls of the nozzle, so that the caking of fluid residues in the nozzles and their consequent clogging can be reliably prevented.
  • air having a temperature between about 25 and 40 ° C and steam having a temperature between about 100 and 130 ° C is preferably used to produce the water vapor / air mixture, in particular in such a way that the nozzle supplied Steam / air mixture has a temperature between about 80 and 110 ° C.
  • the steam / air mixture of the nozzle should be supplied at a pressure between about 250 and 500 mbar.
  • An energy saving can be achieved in particular if the suspension has a solids content of about 10 to 50%, preferably 20 to 45% and in particular 25 to 40%, ie significantly higher than hitherto.
  • a solids content of up to 30% and in the case of coating color of up to 50% are preferred. Then that is in the material web, in particular the paper web, registered Moisture is correspondingly low, which brings about the saving of energy when drying the material web.
  • the suspension has a viscosity between about 15 and 100 mPa ⁇ s.
  • a viscosity of 15 to 30 mPa ⁇ s is preferred.
  • caking of suspension residues in the nozzles can be prevented particularly reliably by using as the material for the nozzles a plastic, preferably a polyether ketone, in particular polyether ether ketone (PEEK).
  • a plastic preferably a polyether ketone, in particular polyether ether ketone (PEEK).
  • PEEK polyether ether ketone
  • Such high temperature resistant thermoplastics ensure good dimensional stability even when in contact with the hot water vapor / air mixture.
  • plastic heats up as a poor conductor of heat when flowing through the hot water vapor / air mixture, so that the risk of caking is reduced.
  • the invention further relates to a system for carrying out a method of the aforementioned type with the features of claim 6.
  • Such a system is characterized by at least one nozzle, in particular two-fluid nozzle, for spraying the suspension onto the material web, in particular paper web, a fluid supply line to the at least one nozzle, an air supply line and a steam supply line in the direction of the at least one nozzle.
  • the air supply line and the steam supply line open in front of the nozzle in a mixing chamber and the mixing chamber has a flow connection for the water / air mixture to the nozzle, which may then be substantially commercially available.
  • a cooler, the steam supply line a pressure control and the air supply line and / or the flow connection can be assigned a temperature control in the system of the air supply line.
  • the air supply line and / or the flow connection is assigned a drainage for condensed water vapor.
  • the system is equipped with a nozzle, whose outlet opening is enclosed by a web, which prevents the downflow of suspension on the outside of the nozzle body.
  • the nozzle 1 is supplied as a fluid, a suspension, for example, a coating color or starch, relatively high viscosity, with which, for example, a paper web to be coated.
  • the nozzle 1 is supplied simultaneously with steam or a water vapor / air mixture.
  • a water vapor / air mixture is water vapor saturated or water vapor supersaturated air in question.
  • the air comes from an air supply line 3 and is cooled by means of a cooler 7 to a temperature between about 25 and 40 ° C, since they can then absorb a correspondingly larger amount of water vapor.
  • the water vapor is supplied via a steam supply line 4.
  • the two lines 3, 4 meet in a mixing chamber 5, which communicates with the nozzle 1 via a flow connection 6. Any resulting condensate can be removed via a drainage line 8.
  • the steam supply line 4 is provided with a pressure control 9 and a pneumatic open / close valve 9 '.
  • the steam is supplied at a temperature of between about 100 and 130 ° C.
  • the water vapor / air mixture should have a temperature between 80 and 110 ° C at the nozzle 1 and be supplied at a pressure of about 250 to 500 mbar. Due to the additional use of water vapor or a water vapor / air mixture, the suspension, in particular a coating color or starch, which is supplied to the nozzle 1, have a solids content of about 10 to 30%, without that the nozzle 1 is added. Accordingly low is the Fluid content of the suspension and the wetting of the web B, so that a correspondingly lower energy is required to dry them after spraying.
  • the spraying of the suspension onto a paper web B running freely between two rolls W is shown.
  • the invention is equally suitable for spraying the suspension in or immediately before a nip in a paper machine, for example also in the press section thereof, or in a calender.
  • a suction On the housing of the spray device, a suction, not shown, may be provided to suck the spray within the housing.
  • nozzles in principle, all known two-fluid nozzles can be used, as for example. From the US 6,969,012 B2 are known. The outlet opening 11 of the nozzle 1 is enclosed at a distance with a web, whereby it is prevented that the suspension runs down on the outside of the nozzle 1 and cakes. A further reduction of the risk of clogging of the nozzle 1 is the use of polyetheretherketone (PEEK) as a nozzle material, as a result, a heating of the nozzle is avoided by the hot water vapor / air mixture.
  • PEEK polyetheretherketone

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  • Paper (AREA)
EP10153943.5A 2009-02-20 2010-02-18 Verfahren und Anlage zum Aufbringen einer Suspension auf eine Materialbahn Not-in-force EP2223748B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10153943T PL2223748T3 (pl) 2009-02-20 2010-02-18 Sposób i instalacja do nanoszenia zawiesiny na pasmo materiału

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009009862A DE102009009862B4 (de) 2009-02-20 2009-02-20 Verfahren und Anlage zum Aufbringen einer Suspension auf eine Materialbahn

Publications (2)

Publication Number Publication Date
EP2223748A1 EP2223748A1 (de) 2010-09-01
EP2223748B1 true EP2223748B1 (de) 2013-06-19

Family

ID=42136213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10153943.5A Not-in-force EP2223748B1 (de) 2009-02-20 2010-02-18 Verfahren und Anlage zum Aufbringen einer Suspension auf eine Materialbahn

Country Status (3)

Country Link
EP (1) EP2223748B1 (pl)
DE (1) DE102009009862B4 (pl)
PL (1) PL2223748T3 (pl)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011002671A1 (de) * 2011-01-13 2012-07-19 Metso Paper, Inc. Leimmittelzuführsystem zum Zuführen von Leimmittel zu einer Papier- oder Kartonbahn
DE102011002670A1 (de) * 2011-01-13 2012-07-19 Metso Paper, Inc. Leimmittelzufuhrsystem zum Zuführen von Leimmittel zu einer Papier- oder Kartonbahn
DE102014100605A1 (de) 2014-01-21 2015-07-23 Paperchine Gmbh Düsenanordnung mit selbstreinigender Frontfläche
DE102017107213A1 (de) * 2017-04-04 2018-10-04 Andritz Küsters Gmbh Verfahren und Vorrichtung zur Aufbringung eines Stoffs auf eine sich bewegende Bahn
PL244240B1 (pl) * 2023-04-14 2023-12-18 Private Label Tissue Spolka Z Ograniczona Odpowiedzialnoscia Sposób powlekania wstęgi papieru i układ do powlekania wstęgi papieru

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944960A (en) * 1988-09-23 1990-07-31 Sundholm Patrick J Method and apparatus for coating paper and the like
EP0682571B1 (en) * 1992-11-06 1999-02-03 SUNDHOLM, Patrick Method and apparatus for coating paper or the like
DE19921592A1 (de) * 1999-05-07 2000-11-09 Voith Sulzer Papiertech Patent Applikationsvorrichtung und -verfahren für eine Papiermaschine
FI113883B (fi) * 1999-08-12 2004-06-30 Runtech Systems Oy Menetelmä ja laitteisto materiaalirainan käsittelemiseksi ja materiaalirainan käyttäytymisen hallitsemiseksi
US6969012B2 (en) * 2002-01-24 2005-11-29 Kangas Martti Y O Low pressure atomizer for difficult to disperse solutions
US6866207B2 (en) * 2002-06-05 2005-03-15 Martti Y. O. Kangas Apparatus for spraying of liquids and solutions containing solid particles such as paper manufacturing fibers and fillers
US7217342B2 (en) * 2002-11-25 2007-05-15 Kangas Martti Y O Apparatus for paper making and paper surface enhancement
FI121674B (fi) * 2003-01-09 2011-02-28 Metso Paper Inc Menetelmä ja sovitelma liikkuvan paperi- tai kartonkirainan kostuttamiseksi

Also Published As

Publication number Publication date
DE102009009862A1 (de) 2010-08-26
EP2223748A1 (de) 2010-09-01
PL2223748T3 (pl) 2013-12-31
DE102009009862B4 (de) 2013-10-10

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