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WO2012007366A1 - Procédé pour appliquer une sauce de couchage - Google Patents

Procédé pour appliquer une sauce de couchage Download PDF

Info

Publication number
WO2012007366A1
WO2012007366A1 PCT/EP2011/061578 EP2011061578W WO2012007366A1 WO 2012007366 A1 WO2012007366 A1 WO 2012007366A1 EP 2011061578 W EP2011061578 W EP 2011061578W WO 2012007366 A1 WO2012007366 A1 WO 2012007366A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
cationic
anionic
base layer
paper
Prior art date
Application number
PCT/EP2011/061578
Other languages
German (de)
English (en)
Inventor
John Bergman
Uwe Fröhlich
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 WO2012007366A1 publication Critical patent/WO2012007366A1/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
    • 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
    • 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
    • D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
    • 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

Definitions

  • the invention relates to a method for applying application medium, in particular coating color on the surface of a running paper or board web to make them suitable for example for an ink jet printing or flexographic printing, wherein the application medium is set cationic or anionic.
  • papers for ink-jet printing or flexographic printing should have a high absorption capacity, so that the printing ink to be applied later is picked up and held by the paper surface. Therefore, the paper web is coated during its production process in the paper machine or in a subsequent refining process in a coating machine with anionic or cationic coating colors. In some cases, two consecutive process steps are carried out, namely the first step anionic and the second step cationic.
  • Another disadvantage is that the mixed components can only dissipate mixed and therefore are not suitable for reprocessing.
  • a base layer consisting of an anionically adjusted, i. negatively charged coating medium and a topcoat consisting of a cationic, i. positively charged set application medium is applied to the surface of the paper web. This is done spatially separated from each other on the same web page.
  • the very expensive cationic application medium can be saved.
  • the anionic base layer applied in an on-line papermaking machine or in an off-line coater provides the necessary optical properties such as opacity, whiteness and brightness, whereas the cationic overlay provides for rapid immobilization of the inks subsequently applied in the presses provides.
  • an intermediate layer consisting of gelatin or polyvinyl alcohol is applied between the anionic base layer and the cationic cover layer.
  • the method can be advantageously designed if the individual layers, ie both the anionic base layer and the cationic top layer, but also the intermediate layer are each applied with the aid of at least one curtain applicator.
  • the respective application media are delivered to the paper or board web in separate single-layer or multilayer curtains, essentially following the principle of gravity. Since the job is done 1: 1, that is applied only in the amount that is to remain on the web surface, you save again expensive application medium.
  • the cationic cover layer and / or the intermediate layer or intermediate layers wet in wet, that is applied without the application of an intermediate drying on the already located on the paper surface base layer.
  • the base layer anchors on the surface of the paper and the cationic top layer is particularly well anchored to the base layer or the intermediate layer as a result of wet-on-wet application. In addition, costs for the unneeded drying facilities are saved.
  • a cationic multilayer is applied to an anionic multilayer.
  • a cationic multilayer is applied to an anionic multilayer.
  • Another possibility is to place a simple cationic topcoat over an anionic basecoat, to which an intermediate coat is applied, as well. It is also possible to use an anionic base bilayer (or double coat), but also a base single coat (or single layer) to apply a cationic double layer (or double layer).
  • At least two layers or layers always form the total application layer.
  • the coating weight of the single or multiple anionic base layer should be higher than the coating weight of the single or multiple cationic layer.
  • the following quantity ranges are suggested for this:
  • the anionic base layer is in an amount or in a total line weight of 2 to 20 g / m 2 , preferably 2 to 18g / m 2 and
  • the cationic topcoat is applied in an amount or in a total coat weight of 2 to 18g / m 2 , preferably 1 to 10 g / m 2 .
  • FIG. 1 shows a first variant with which the method according to the invention is carried out
  • FIG. 2 shows a second variant with which the method according to the invention is carried out
  • FIG. 3 shows a third variant with which the method according to the invention is carried out
  • FIG. 1 shows a paper or board web 1 which runs in the direction L over two guide rollers 2 which are spaced apart from one another. Above the web 1 and spaced from her two curtain applicators 3 and 4 are arranged, which are designed as a so-called slot nozzles. These slot nozzles, i. referred to as "slot dies" in the jargon, are already known from DE-A1 102007 000782.
  • the two commissioned works 3 and 4 have identically constructed components and are visible in the running direction of the web 1 as shown in Figure 1, arranged one after the other, but could - as not shown here - also be combined to form a structural unit.
  • the applicator 3 is intended for dispensing anionic application medium 5 or coating color in the form of a single-layer curtain 5a.
  • the curtain falls down on the track surface essentially due to gravity.
  • the individual curtain 5a then generates on the surface of the paper or board web 1 a contour layer which forms a monolayer base layer 5b.
  • the commissioning unit 4 arranged at a certain distance is likewise intended here for dispensing cationic application medium 6 or coating color here in the form of a single-layered curtain 6a.
  • the individual curtain 6a then generates on the surface of the paper or board web 1 also a single layer, which forms a single-layer cover layer 6b. All orders are made on the same web page and in only one pass of the web 1.
  • air boundary layer control devices 7 are available.
  • catchers 8 e.g. Drip trays or gutters, for the curtain when starting and stopping the curtain drawn with.
  • FIG. 2 shows that a double-layered anionic base layer 5c is applied to the surface of the paper or board web 1. Subsequently, as in FIG. 1, a single-layer cationic top layer 6c is applied.
  • This figure also applies to the case where a single-layer base layer 5b and above an intermediate layer 9, consisting of a gelatin or polyvinyl alcohol is applied.
  • a so-called sliding layer nozzle 10 which is referred to in the art as "slide die" is used as a curtain applicator.
  • a curtain applicator is used as a curtain applicator.
  • This curtain coater contains several individual application medium chambers 10.1 to 10.n. From each application chamber branches up from a supply gap, which in turn merges upward into a slot-shaped outlet nozzle, which were not designated here for reasons of clarity with.
  • three layers ie double-layer base layer 5c and single-layer cover layer 6b, form the overall layer S.
  • FIG. 3 shows a further variant of the method.
  • two double layers each with a removable from Figure 2 curtain applicator in the form of a respective Gleit harshdüse 10 are successively applied.
  • the anionic base layer 5c is formed here by means of a double-layered curtain 5d consisting of the anionic coating medium 5.
  • the following cationic cover layer 6c is formed here by means of a double-layered curtain 6d consisting of the cationic application medium 6.
  • an intermediate layer 9 can likewise be applied between the base layer and the cover layer. This is very efficiently possible due to the use of the described sliding layer nozzles 10 with the plurality of application medium chambers.
  • curtain applicator units 3, 4 and 10 work without contact. That is, the deposited application media are applied without web-contacting components. The individual layers are also applied wet-on-wet.
  • the anionic base layer is applied in a coating weight of 18 g / m 2 and the cationic topcoat in a coating weight of about 10 g / m 2 .
  • the solids content of the cationic outer layer is approx. % and the solids content of the anionic base layer about 55%.

Landscapes

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

Abstract

L'invention concerne un procédé pour appliquer une substance d'application, notamment une sauce de couchage, sur la surface d'une bande de papier ou de carton en mouvement, afin de la rendre apte à l'impression par jet d'encre ou à l'impression flexographique, une substance d'application réglée cationiquement et anioniquement étant employée. Selon l'invention, une couche de base (5b, 5c) composée d'une substance d'application réglée anioniquement (5), et une couche de couverture (6b, 6c) composée d'une substance d'application réglée cationiquement (6) étant appliquées successivement sur la surface de la bande de papier ou de carton (1) ou sur le même côté de la bande.
PCT/EP2011/061578 2010-07-16 2011-07-08 Procédé pour appliquer une sauce de couchage WO2012007366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010031436 DE102010031436A1 (de) 2010-07-16 2010-07-16 Verfahren zum Auftragen von Streichfarbe
DE102010031436.6 2010-07-16

Publications (1)

Publication Number Publication Date
WO2012007366A1 true WO2012007366A1 (fr) 2012-01-19

Family

ID=44486080

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/061578 WO2012007366A1 (fr) 2010-07-16 2011-07-08 Procédé pour appliquer une sauce de couchage

Country Status (2)

Country Link
DE (1) DE102010031436A1 (fr)
WO (1) WO2012007366A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0707977A1 (fr) * 1994-10-20 1996-04-24 Canon Kabushiki Kaisha Papier couché par moulage pour impression par jet d'encre, son procédé de fabrication et méthode d'impression par jet d'encre l'utilisant
EP1120281A1 (fr) * 2000-01-28 2001-08-01 Oji Paper Company Limited Matériau d'enregistrement à jet d' encre
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
US20030194501A1 (en) * 2002-04-12 2003-10-16 Robert Urscheler Method of producing a coated substrate
EP1842687A1 (fr) * 2005-01-28 2007-10-10 Oji Paper Co., Ltd. Materiau pour impression par jet d'encre
JP2008238503A (ja) * 2007-03-27 2008-10-09 Oji Paper Co Ltd 多層塗工シートおよびその製造方法
DE102007000782A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
US20090087568A1 (en) * 2007-09-28 2009-04-02 Fujifilm Corporation Method for manufacturing an inkjet recording medium
US20090123674A1 (en) * 2007-11-08 2009-05-14 Shaw-Klein Lori J Inkjet recording element
WO2010149676A1 (fr) * 2009-06-26 2010-12-29 Akzo Nobel Chemicals International B.V. Substrat revetu et son procede de preparation

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0707977A1 (fr) * 1994-10-20 1996-04-24 Canon Kabushiki Kaisha Papier couché par moulage pour impression par jet d'encre, son procédé de fabrication et méthode d'impression par jet d'encre l'utilisant
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
EP1120281A1 (fr) * 2000-01-28 2001-08-01 Oji Paper Company Limited Matériau d'enregistrement à jet d' encre
US20030194501A1 (en) * 2002-04-12 2003-10-16 Robert Urscheler Method of producing a coated substrate
EP1842687A1 (fr) * 2005-01-28 2007-10-10 Oji Paper Co., Ltd. Materiau pour impression par jet d'encre
JP2008238503A (ja) * 2007-03-27 2008-10-09 Oji Paper Co Ltd 多層塗工シートおよびその製造方法
DE102007000782A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
US20090087568A1 (en) * 2007-09-28 2009-04-02 Fujifilm Corporation Method for manufacturing an inkjet recording medium
US20090123674A1 (en) * 2007-11-08 2009-05-14 Shaw-Klein Lori J Inkjet recording element
WO2010149676A1 (fr) * 2009-06-26 2010-12-29 Akzo Nobel Chemicals International B.V. Substrat revetu et son procede de preparation

Also Published As

Publication number Publication date
DE102010031436A1 (de) 2012-01-19

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