WO2012163787A1 - Procédé de fabrication d'une bande de papier couché sans bois ou de papier couché de faible grammage - Google Patents

Procédé de fabrication d'une bande de papier couché sans bois ou de papier couché de faible grammage Download PDF

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Publication number
WO2012163787A1
WO2012163787A1 PCT/EP2012/059679 EP2012059679W WO2012163787A1 WO 2012163787 A1 WO2012163787 A1 WO 2012163787A1 EP 2012059679 W EP2012059679 W EP 2012059679W WO 2012163787 A1 WO2012163787 A1 WO 2012163787A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
coating
curtain
layer
application
Prior art date
Application number
PCT/EP2012/059679
Other languages
German (de)
English (en)
Inventor
John Bergman
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 WO2012163787A1 publication Critical patent/WO2012163787A1/fr

Links

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
    • D21H23/30—Pretreatment of the paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0241—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to elongated work, e.g. wires, cables, tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate
    • 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
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—Curtain coaters
    • 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

Definitions

  • the invention relates to a method for producing a wood-free coated or lightly coated paper web, wherein on at least one side of the running through a coater web a pigment-containing, liquid to pasty application medium is applied by curtain coating.
  • a method for producing a substantially wood-free paper web (WFC - WoodFree Coated) is known.
  • the web is provided with a double line on at least one side of the web, with the last coating being made by a non-contact application method, such as curtain coating.
  • a non-contact application method such as curtain coating.
  • Wood-free paper is so-called graphic paper.
  • WO 2005/059245 A1 and WO 2005/052252 A1 disclose processes for producing an LWC paper (Light Weight Coated Paper).
  • LWC paper Light Weight Coated Paper
  • Such a paper has a coating of only light weight. Above all, it should be easy to print and suitable for gravure printing. Such papers are used for catalogs and magazines.
  • LWC paper is provided with a blade or film coating.
  • a curtain coating method is known from DE A1 100 12 344. From DE A1 10 2007 000 782 the application of at least two layers with a curtain applicator is known.
  • a curtain applicator here is a slot die (English: Slot Die) into consideration, from the substantially gravity following the application medium from above falls down on the web page to be coated in the form of a closed curtain and there is deposited as a contour line.
  • EP-A1 1 255 615 another embodiment of a curtain applicator is known, which is referred to in professional circles as a slide layer nozzle (English: Slide Die).
  • theRemediunn only falls on the substrate to be painted after it has evened on a sliding surface of the nozzle.
  • the curtain coating is contactless when using the two types of commissioned work. That is, the amount of application that is applied remains on the paper. There is no doctor blade doctoring (e.g., doctor blade or blade).
  • the coating layer applied with the curtain applicator is scarred or craters, i. uncovered bodies located between 20 ⁇ and 150 ⁇ are large. This is a quality defect because later on the web to be applied pressure then also quality defects, i. Has printing defects.
  • the said craters are sometimes larger than those of printed grids. Craters larger than 50 ⁇ are even visually recognizable and particularly disturbing.
  • a fiber suspension is prepared, then introduced the fiber suspension in a headbox and a fibrous web is produced in a former, followed by dewatering in a press and then drying the web.
  • a coating of the paper web is carried out either in online mode (without previous rolling and again Unrolling the web) or in offline mode (ie with a separate from the web-making machine coating machine) for the purpose of finishing or to improve the printability of the web.
  • a coating method is preferably thought of the known curtain coating.
  • a moistening agent is applied to the same side of the web before said one or more layers curtain coating or application of the pigment-containing coating medium, so that the moisture content of the web surface of about 3% is increased to up to 15%.
  • the applied coating layer is now very even and ideal for later printing. Apparently, the spraying of the humectant has caused a displacement of air from the existing surface pores of the paper. This achieves better wetting of the coating medium on the paper web surface.
  • the surface of the coated paper web is characterized by a uniform surface and smoothness.
  • the humidifying agent is sprayed in an amount of about 3 I / h and under a pressure of about 3 bar, wherein a drop size of the humidifying agent to be sprayed of less than 20 ⁇ is used.
  • the humectant is water or demineralized water. If desired, additives such as surfactants such as surfactants may be blended.
  • surfactants such as surfactants may be blended.
  • the advantage of this measure is that the penetration of the humectant into the web can be forced, but also delayed.
  • a medium weight polymer could be used, which is the better crosslinking of the paper fibers with the coating medium is used.
  • the web can be guided via a suction device, for example a suction roller.
  • the moistening agent is applied spatially separated from the subsequent curtain coating.
  • the moistening agent is applied even before removal of the air boundary layer flowing with the web takes place.
  • the subsequently delivered single or multi-layer curtain which is sensitive to air currents can thereby fall down on the web with even greater stability.
  • the curtain coating can also be multi-layered.
  • two so-called single-curtain nozzles arranged one behind the other are used for dispensing two individual curtains or a unit forming double curtain nozzle or a multi-curtain nozzle.
  • only the delivery of a single curtain is possible.
  • the curtain coating for the application of the individual layer or of several layers or layers is carried out with known curtain slot dies or slot dies and / or known sliding layer nozzles or slide dies. These application units apply the coating colors very evenly and without excess to the paper or cardboard surface.
  • lower values should be selected for the coat weight, for the viscosity and for the solids content of the lowermost applied layer of the application medium than for the overlying layer or layers.
  • the lowermost layer has a solids content of about 30 or 40% and top layer 60 or 70%.
  • a coating weight between 1 and 5g / m 2 , preferably 2 to 4g / m 2 , a viscosity BR100 between 20 and 500mPas, preferably BR100 between 30 and 300mPas is chosen.
  • the uppermost layer (top coat layer) and one possible intermediate layer becomes wet-in-wet, i. applied without application of an intermediate drying on the already applied to the paper surface bottom layer (base coat layer).
  • the top layer anchors itself particularly well with the base layer or the intermediate layer as a result of the wet-on-wet application. In addition, costs for the unneeded drying facilities are saved.
  • a porosity measured according to Bendtsen has proved to be particularly suitable, which is equal to or greater than 200 ml / min.
  • the second side of the web can also be treated analogously to the first side of the web.
  • a paper web 1 can be seen. This is prepared by first preparing a fiber suspension. Subsequently, the fiber suspension is introduced into a headbox and a paper web is produced in a former. Subsequently, the wet paper web is subjected to dewatering in a press, followed by drying of the web. This manufacturing process is generally designated by M (for Manufacturing) in the figure.
  • the paper web to be coated has a porosity measured according to Bendtsen of about 200 ml / min.
  • the pulp or paper web runs in the example shown in the direction L over a support surface. 2
  • a curtain applicator 3 is arranged, which is designed in the example as a so-called twin so double slot nozzle.
  • the applicator 3 is for dispensing of a coating medium 4 and 5 or pigment-containing coating color in the form of two single-layer curtains 4 a and 5 a determined that form a total of a double-layered curtain in the example. These curtains 4 a, 5 a fall substantially downwards due to gravity to the web surface 1 a. The curtains and the double curtain then generates on the surface 1 a of the paper web 1, a contour layer 6.
  • a line weight of about 3 g / m 2 , a viscosity BR100 of about 200mPas and a solids content of about 35 is selected.
  • the same coating color as in the case of curtain 4a or a different composition can be used again.
  • the curtain 5 a generates on the surface of the paper web 1 the upper layer of the contour layer or forms a cover layer 6 b.
  • an air boundary layer removal or fighting device 7 is present in front of the coater 3.
  • collecting devices such as trays or gutters, are available for application medium collected when the curtain is started and stopped. These are not shown for clarity reasons.
  • a wetting agent 8 is applied to the same side of the web with a spraying device 9, so that the moisture content of the web surface is approx 3% is increased up to 15%.
  • a device marketed by the applicant "ModulePro-Nozzle” or so-called Danfoss spray nozzles, for example of the type “Nessie 180Z1940 0, 15" is used.
  • the humectant 8 is sprayed in an amount of 3 l / h and under a pressure of 3 bar. This achieves drop sizes of ceremoniesprühenden humectant of less than 20 ⁇ .
  • humectant water As humectant water is used in the example.
  • a Curtain applicators 3 and 4 enclosing climatic chamber 13 is present.
  • the spray humidifier 9 is preferably outside the climate chamber, i. seen in the direction L of the paper web 1, arranged in front of the chamber 13. This ensures spatially separate dispensing of the moistening agent 8 from the subsequent coating by means of the curtains 4a, 5a. Both orders can not influence each other negatively.
  • the humidifying device 9 is seen in this variant in the running direction L of the paper web 1 while disposed within the climatic chamber 13, but even before the air boundary layer control device 7. That is, the humidifying agent 8 is applied before removing the flowing with the web 1 air boundary layer takes place , Again, this ensures that the curtain can fall undisturbed. Following the curtain coating, the web 1 is dried. By way of example, only a contactless deflection and drying unit, a so-called Airturn 14 is shown. Further treatment steps, such as, for example, coating of the other side of the web 1 b, renewed drying by means of contactless drying devices and cylinder driers, and subsequent smoothing of the web can also take place, but are not shown in the figure. LIST OF REFERENCE NUMBERS

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une bande de papier (1) couché sans bois ou de papier couché de faible grammage, selon lequel sur au moins une face (1a) de la bande de papier (1) traversant une machine de couchage est appliqué un agent d'enduction (4,5) liquide à pâteux, contenant des pigments, par enduction au rideau. Selon l'invention, avant l'application d'une ou de plusieurs couches de l'agent d'enduction (4,5) contenant des pigments, un agent d'humidification (8) est appliqué sur la même face (1a) de la bande de papier de façon à porter le pourcentage d'humidité de la surface (1a) de la bande de papier d'environ 3% jusqu'à 15%.
PCT/EP2012/059679 2011-05-30 2012-05-24 Procédé de fabrication d'une bande de papier couché sans bois ou de papier couché de faible grammage WO2012163787A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110076713 DE102011076713A1 (de) 2011-05-30 2011-05-30 Verfahren zur Herstellung einer holzfreien gestrichenen oder leichtgewichtig gestrichenen Papierbahn
DE102011076713:4 2011-05-30

Publications (1)

Publication Number Publication Date
WO2012163787A1 true WO2012163787A1 (fr) 2012-12-06

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ID=46149471

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/059679 WO2012163787A1 (fr) 2011-05-30 2012-05-24 Procédé de fabrication d'une bande de papier couché sans bois ou de papier couché de faible grammage

Country Status (2)

Country Link
DE (1) DE102011076713A1 (fr)
WO (1) WO2012163787A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107034732A (zh) * 2017-05-27 2017-08-11 姚月石 纸张浸渍装置
US9765482B2 (en) 2013-10-07 2017-09-19 Basf Se Manufacture of paper and paperboard containing wood free pulp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017101373B4 (de) 2017-01-25 2022-02-03 Voith Patent Gmbh Vorhang-Auftragswerk und Verfahren zum Auftragen eines Auftragsmediums

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1057532A (en) * 1963-03-26 1967-02-01 Continental Oil Co Method and apparatus for coating sheets of solid materials
DE10012344A1 (de) 2000-03-14 2001-09-20 Voith Paper Patent Gmbh Vorhang-Auftragsverfahren
EP1255615A1 (fr) 2000-01-26 2002-11-13 Tetra Laval Holdings & Finance S.A. Procede de fabrication d'un lamine d'emballage multicouche et lamine d'emballage obtenu selon ce procede
WO2005052252A1 (fr) 2003-11-28 2005-06-09 Voith Paper Patent Gmbh Machine a papier
WO2005059245A1 (fr) 2003-12-16 2005-06-30 Voith Paper Patent Gmbh Machine à papier
DE102007029328A1 (de) 2007-06-22 2008-12-24 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung einer zumindest im Wesentlichen holzfreien gestrichenen Papierbahn
DE102007000782A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
EP2111925A1 (fr) * 2008-04-25 2009-10-28 Voith Patent GmbH Unité d'application de rideau
DE102008050899A1 (de) * 2008-09-25 2010-04-08 Gerhard Bach Vorrichtung zum Befeuchten von flexiblem Flachmaterial
DE102008042730A1 (de) * 2008-10-10 2010-04-15 Voith Patent Gmbh Verfahren zum Färben von Papieren
EP2314767A1 (fr) * 2009-10-20 2011-04-27 Voith Patent GmbH Dispositif de revêtement

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DE19903581A1 (de) * 1999-01-29 2000-08-03 Voith Sulzer Papiertech Patent Trocknungs- und Glättungseinheit
DE10023794A1 (de) * 2000-05-15 2001-11-22 Voith Paper Patent Gmbh Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Oberfläche
FI20045110A (fi) * 2004-03-30 2005-10-01 Metso Paper Inc Menetelmä päällystetyn kuiturainan valmistamiseksi
DE102005036667A1 (de) * 2005-08-04 2007-02-08 Voith Patent Gmbh Auftragsverfahren
DE102006057870A1 (de) * 2006-12-08 2008-06-12 Voith Patent Gmbh Mehrschichtauftrag
DE102007009702A1 (de) * 2007-02-28 2008-09-04 Voith Patent Gmbh Verfahren zur Herstellung einer beschichteten Faserstoffbahn, insbesondere aus Papier oder Karton
DE102009029625A1 (de) * 2009-09-21 2011-03-24 Voith Patent Gmbh Maschine zur Herstellung und/oder Behandlung einer Faserstoffbahn
DE202010016479U1 (de) * 2010-12-10 2011-02-17 Voith Patent Gmbh Auftragsvorrichtung

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1057532A (en) * 1963-03-26 1967-02-01 Continental Oil Co Method and apparatus for coating sheets of solid materials
EP1255615A1 (fr) 2000-01-26 2002-11-13 Tetra Laval Holdings & Finance S.A. Procede de fabrication d'un lamine d'emballage multicouche et lamine d'emballage obtenu selon ce procede
DE10012344A1 (de) 2000-03-14 2001-09-20 Voith Paper Patent Gmbh Vorhang-Auftragsverfahren
WO2005052252A1 (fr) 2003-11-28 2005-06-09 Voith Paper Patent Gmbh Machine a papier
WO2005059245A1 (fr) 2003-12-16 2005-06-30 Voith Paper Patent Gmbh Machine à papier
DE102007029328A1 (de) 2007-06-22 2008-12-24 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung einer zumindest im Wesentlichen holzfreien gestrichenen Papierbahn
DE102007000782A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
EP2111925A1 (fr) * 2008-04-25 2009-10-28 Voith Patent GmbH Unité d'application de rideau
DE102008050899A1 (de) * 2008-09-25 2010-04-08 Gerhard Bach Vorrichtung zum Befeuchten von flexiblem Flachmaterial
DE102008042730A1 (de) * 2008-10-10 2010-04-15 Voith Patent Gmbh Verfahren zum Färben von Papieren
EP2314767A1 (fr) * 2009-10-20 2011-04-27 Voith Patent GmbH Dispositif de revêtement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9765482B2 (en) 2013-10-07 2017-09-19 Basf Se Manufacture of paper and paperboard containing wood free pulp
CN107034732A (zh) * 2017-05-27 2017-08-11 姚月石 纸张浸渍装置

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