EP2480416B1 - Procédé de fabrication d'une pièce d'usinage portant une impression numérique - Google Patents

Procédé de fabrication d'une pièce d'usinage portant une impression numérique Download PDF

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Publication number
EP2480416B1
EP2480416B1 EP10757759.5A EP10757759A EP2480416B1 EP 2480416 B1 EP2480416 B1 EP 2480416B1 EP 10757759 A EP10757759 A EP 10757759A EP 2480416 B1 EP2480416 B1 EP 2480416B1
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EP
European Patent Office
Prior art keywords
workpiece
resin mixture
printed
solvent
printing
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EP10757759.5A
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German (de)
English (en)
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EP2480416A1 (fr
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.)
Hymmen GmbH Maschinen und Anlagenbau
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Hymmen GmbH Maschinen und Anlagenbau
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Application filed by Hymmen GmbH Maschinen und Anlagenbau filed Critical Hymmen GmbH Maschinen und Anlagenbau
Priority to PL10757759T priority Critical patent/PL2480416T3/pl
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers

Definitions

  • the invention relates to a method for producing a digitally printed flat, web-shaped or plate-shaped workpiece, for example a kitchen worktop, a furniture front or a laminate floor part with a decorative and resistant surface.
  • the EP 1 858 244 discloses a method for producing a decor, in which a decor is printed on a carrier material and then covered with a synthetic resin layer. The unit made of carrier material and synthetic resin layer is then pressed so that the decor remains visible through an abrasion-resistant surface.
  • An inkjet printer is used for printing, the printing fluid being suitable both for the inkjet printer and for a gravure printing process.
  • the WO 01/48333 discloses a method for producing a printed workpiece, in which a surface is printed with a decor and then coated with a translucent wear layer. As a result, the decor image is arranged protected under the wear layer.
  • a digitally printed flat, web-shaped or plate-shaped workpiece with an abrasion-resistant surface is produced, a digital data record for a decorative image being provided first, which is sent from a computer to a digital printing device. A printable workpiece is then fed to the printing device.
  • the digital printing of the respective workpiece by means of the printing device takes place exclusively using solvent-based printing inks.
  • All printing inks that do not contain water as the main component are recorded as solvent-based printing inks.
  • the digital printing is carried out using at least one solvent-based printing ink with a weight fraction of solvent 40-99%, preferably 65-92%, the solvent-based printing ink being a pigmented printing ink.
  • the printing is followed by a reduction in the solvent content to a defined residual moisture in the workpiece.
  • the evaporation of the solvent can also be accelerated by heating the workpiece, for example by a hot air blower.
  • the defined residual moisture describes a maximum content of solvent that remains in the workpiece.
  • the subsequent impregnation of the printed workpiece with a resin mixture can take place, for example, by coating, impregnating, wetting or spraying the workpiece with the respective solid or liquid resin mixture, the resin mixture then being cured in a heating press
  • the method has the advantage that the use of solvent-containing printing inks in the method according to the invention means that the nozzles of the print heads are not added to the printing device, which results in longer service lives of the printing device.
  • the use of solvent-containing printing inks according to the invention only enables the further process steps of impregnation by means of aqueous resins.
  • the solvent content in the workpiece is reduced significantly faster, for example when using short-chain monohydric alcohols, than with water-based printing inks, which means that the printed workpiece can be dried with less energy consumption.
  • decorative coated workpieces such as Kitchen worktops, kitchen furniture fronts, other furniture fronts or also laminate floors and similar workpieces with decorative surfaces of high quality.
  • the reproduction of a wood structure or a stone structure, fantasy decors or other decors based on nature can be achieved, whereby the workpieces also have positive physical properties such as abrasion resistance, scratch resistance, heat resistance.
  • digital printing is carried out using at least one solvent-based printing ink with a solvent content of 40-99%, preferably 65-92%, the solvent-based printing ink being a pigmented printing ink.
  • radiation-hardening printing inks can act as a barrier layer, for example by UV radiation, in the subsequent impregnation of a workpiece printed in this way with a water-based resin solution, thus preventing a permanent connection between the printed workpiece and underlying material layers. Due to the high proportion of solvent, the formation of a barrier layer from polymerized acrylates can be prevented particularly advantageously, since the solvent distributes the printing dyes on the surface and also transports them into the workpiece.
  • one or more unprinted, resin-containing material layers are arranged above and / or below the printed workpiece before curing in the heating press, so that the resin flow from these material layers soaks the unheated, printed workpiece during the pressing process.
  • Both material layers and the workpiece can consist of absorbent materials such as paper, for example.
  • the workpiece After impregnating the printed workpiece or arranging a layer of material impregnated with a resin mixture on and / or below the printed workpiece, the workpiece can be applied to one or more layers of material and then joined together by pressing.
  • an impregnated and printed decorative paper can be applied to a wood-based board, preferably a chipboard, MDF or HDF board, which results in the lamination of a flex-resistant substrate.
  • the solvent-based printing ink contains pigments, since pigments are colourfast and consequently there is no aging and decomposition of the printing inks by UV light.
  • the use of a pigmented printing ink thus guarantees a high-quality print image over a long service life.
  • the resin mixture is then predried. This enables pre-crosslinking of constituents of the resin mixture and a reduction in the water content to a residual moisture content of less than 10%, preferably less than 4%.
  • melamine resin has positive physical properties after curing, e.g. Moisture resistance, temperature resistance and scratch resistance.
  • the resin mixture is cured by crosslinking polymer strands as a result of a condensation reaction known per se at elevated pressure in the range 20-60bar, preferably 30-40bar and temperatures of 150-230 ° C, preferably 170-200 ° C using a heating press.
  • the resin mixture is cured by means of a continuous double belt press.
  • This press enables the processing of continuous material as well as piece material with a high processing speed.
  • the double belt press is used to press further, non-printed, impregnated material layers, in particular paper layers, with the printed and impregnated workpiece. Since the material layers can be fed as continuous material, the double belt press offers a higher throughput due to its continuous mode of operation than, for example, a short cycle press.
  • the surface can also be structured during the pressing process.
  • Fig. 1 schematically shows a feed station 102, with a roll 2 for decorative paper 3 to be printed, a printing station 103 for a decorative paper 3 and a station for reducing the solvent content 104 in the decorative paper 3 by means of a printing device 1.
  • Printing in digital printing can also be carried out directly on decorative paper 3 on a surface of a workpiece, in particular an HDF or MDF board.
  • the printing device 1 has a printer 4, which has four print heads 5. These release solvent-based printing ink 6 onto the surface of the decorative paper 3.
  • the printing ink is dried, if necessary using a schematically illustrated dryer 7.
  • the drying process can possibly also take place during printing without the aid of a dryer.
  • the decorative paper 3 can be rolled up onto a roll 8 for storage, transport and further processing.
  • the way of feeding a workpiece depends on its material properties. Sheets of paper can be clamped and unrolled, while wood-based panels are fed to the printing device on treadmills.
  • the print heads 5 can be arranged stationary in the printer 4 in order to implement a single-pass printing process.
  • the print heads can advantageously extend across the entire width of the area to be printed.
  • the individual print heads 5 have, for example, a width of 70 mm and are arranged next to one another in a print module, preferably with the solvent-containing printing inks black, mangenta, cyan and yellow. If several printing modules are arranged next to one another, workpieces can also be printed, for example with a width greater than 1 m.
  • the arrangement of several print modules next to one another in a stationary manner enables a uniform multicolored print image on which no transitions between the individual print modules can be seen.
  • the print heads 5 can also be arranged on a movable carriage in the arrangement, so that printing on the workpiece can be carried out using the multi-pass method.
  • the stationary and movable printhead arrangement described above can also be arranged in several rows one behind the other in order to achieve a higher printing speed compared to a single-row arrangement.
  • nozzle bars can also be arranged.
  • printing inks can also be used in printing device 1.
  • Fig. 2 shows a station for impregnating 105 the workpiece with a resin mixture 19, for example with an amino resin (melamine resin mixture).
  • the previously printed decorative paper 3 is unwound from the roll 8, drawn through a resin bath 9 with the liquid resin, squeezed out excess resin by means of a squeeze roller 10 and then dried by a schematically illustrated dryer 11.
  • This dryer 11 is designed such that it enables the resin to dry on.
  • the dryer 11 can be designed as a circulating air or warm air dryer. After the resin has dried, the workpiece can be wound onto another roll 12 for storage.
  • a cutting device (not shown) can also be provided in order to cut the impregnated and dried paper into sheets.
  • Fig. 3 shows a station 107 for arranging two unprinted paper layers 17, which are impregnated with a resin mixture 19, above and / or below a printed wooden workpiece 20.
  • a printed and impregnated decorative paper 3 can also be applied above or below a wood-based panel 13.
  • the printed and impregnated decorative paper 3 is unwound above and below the wood-based panel 13 and this package, which has been brought together in this way, is then cured in a double belt press 14.
  • the resin mixture is then cured and the individual layers are connected to the respective printed workpiece in the double belt press 14 with two rollers 15 and a feed for the wood-based panel 13.
  • the printed decorative paper 3 is cured and bonded to the wood-based panel 13 ( Fig. 4 ) in a heated short cycle press 16.
  • Fig. 5 shows an exemplary structure of a product generated by the inventive method.
  • a decorative paper 3 printed with the solvent-based printing ink 6, preferably the solvent-based digital printing ink, is applied to a wood-based panel 13.
  • the decorative paper 3 has color pigments on, which are brought onto and into the decorative paper 3 during printing 103.
  • a further resin-coated paper is arranged above this resin-coated decorative paper 3 provided with the color pigments, which paper is provided as an overlay paper 17 with a resin mixture 19 by impregnation 105.
  • a wear protection layer 21 is applied, which has corundum (aluminum oxide (Al 2 O 3 )) or another material to increase the abrasion resistance.
  • Another resin-coated paper can be applied on the underside of the wood-based panel 13 as counter-pull paper.
  • This can also be in the form of printed and impregnated decorative paper 18, as on the top, if the finished end product is to be coated from both sides, if necessary also as described above, by an overlay paper 17 made of aluminum oxide so that it is wear-resistant.
  • the overlay paper 17 can also be omitted or alternatively can be supplemented by two or more papers on the top, optionally also on the underside.
  • a resin-coated paper 17 can be applied to the underside of a printed wooden workpiece plate 20.
  • a digital data record for a decorative image for example a wood structure replica or stone tile replica or another natural image or even a fantasy decor
  • a material to be printed is fed to the printing device 1.
  • a suitable material is, for example, a paper, preferably a non-resinated and uncoated decorative paper, which has a whitening agent, for example titanium dioxide (TiO 2 ), applied to it and is absorbent.
  • this decorative paper can also be provided with a melamine resin impregnation, so that in the dried state 5-40%, particularly preferably 10-20%, of the total weight of the paper is predetermined by the melamine content.
  • plastic materials and any other printable material can also be used as the printable workpiece. This includes also direct printing on a wood-based panel.
  • the digital printing device is used to print on the decorative paper or the workpiece using inkjet print heads.
  • the inkjet printheads used emit individual small droplets in the same or different droplet sizes. Suitable droplet sizes are between 3 and 100 pl per droplet, particularly preferably between 5 and 45 pl per droplet size.
  • the droplets are discharged from a nozzle opening on the underside of the print heads. The size of the nozzle opening is between 10-100 ⁇ m, preferably 15-40 ⁇ m.
  • the digital printing ink used is preferably a pigmented ink in which solids (pigments) of a size between 0.01 ⁇ m and 5 ⁇ m, preferably 0.1-3 ⁇ m, are used as dyes. A mixture of pigments and liquid dyes is also possible. In a preferred embodiment, four printing inks with cyan, magenta, yellow and black pigments are used.
  • the printing ink used contains pigments, i.e. solids, which have a high to very high color stability. According to the known wool scale, this color stability is between 5-8, particularly preferably 6-8.
  • the pigments that are used have an average particle size of 0.01-5 ⁇ m, particularly preferably 0.1-3 ⁇ m.
  • the proportion of pigments based on the total weight of the digital printing ink used is 0.4-25%, particularly preferably 1-10%.
  • the other main component of the digital printing ink used according to the invention is a solvent which is not water, preferably an organic solvent.
  • a solvent which is not water, preferably an organic solvent.
  • an alcohol particularly preferably ethyl alcohol, is used here in a concentration of 40-99%, particularly preferably 65-92% (percent by weight).
  • constituents of the ink can be dispersants and a number of other additives. These additives influence the desired ones physical properties of the ink, such as viscosity, temperature stability, durability, pH, electrical conductivity, etc.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Toxicology (AREA)
  • Laminated Bodies (AREA)

Claims (11)

  1. Procédé pour la fabrication d'une pièce d'œuvre (3, 20) plate, en forme de bande ou de plaque, dotée d'une surface résistante à l'abrasion et imprimée par impression numérique, comprenant les étapes suivantes :
    A) préparation d'un ensemble de données numérique pour une image de décor pour un dispositif d'impression numérique (1) ;
    B) acheminement d'une pièce d'œuvre imprimable (3, 20) vers le dispositif d'impression (1) ;
    C) impression numérique au moyen du dispositif d'impression (1) en utilisant au moins une encre d'imprimerie (6) à base de solvants ;
    D) réduction de la teneur en solvants jusqu'à une humidité résiduelle dans la pièce d'œuvre (3, 20) ;
    E) imprégnation de la pièce d'œuvre (3, 20) imprimée avec un mélange de résine (19) et
    F) durcissement du mélange de résine (19) au moyen d'une presse chauffante (14, 15),
    dans lequel l'impression numérique de l'étape C) utilise au moins une encre d'imprimerie (6) à base de solvants à raison d'une part du poids de solvant de 40 à 99 %, de préférence de 65 à 92 %, et l'encre d'imprimerie (6) à base de solvants est une encre d'imprimerie pigmentée.
  2. Procédé selon la revendication 1, caractérisé en ce qu'une ou plusieurs couches de matériau (13) sont appliquées sur la pièce d'œuvre (3, 20) et solidarisées avec la pièce d'œuvre (3, 20) pendant le durcissement dans l'étape F).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'au moins une couche de matériau (17) imprégnée d'un mélange de résine (19) est appliquée sur la pièce d'œuvre (3, 20).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que la réduction de la teneur en solvants va jusqu'à une humidité résiduelle dans la pièce d'œuvre (3, 20) de moins de 4 %, de préférence moins de 1,5 %.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'étape de réduction de la teneur en solvants jusqu'à une humidité résiduelle dans la pièce d'œuvre (3, 20) est suivie de la disposition d'une couche de matériau non imprimée (17) contenant un mélange de résine, puis d'un pressage dans une presse chauffante.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un mélange de résine (19) à base de mélamine est utilisé pour imprégner la pièce d'œuvre (3, 20) imprimée ou la couche de matériau non imprimée (17).
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que le durcissement du mélange de résine (19) est réalisé par une presse continue à double bande (14).
  8. Procédé selon la revendication 7, caractérisé en ce qu'avant le durcissement, d'autres couches de matériau imprégnées non imprimées (17), en particulier des couches de papier, sont disposées par-dessus ou par dessous la pièce d'œuvre imprégnée imprimée (3, 20) ou les une ou plusieurs couches de matériau (13).
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que pendant ou après le durcissement du mélange de résine contenant des agents de polymérisation, un traitement de surface est effectué pour produire un stratifié décoratif.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que le durcissement du mélange de résine (19) est réalisé par une presse à cadence rapide (15).
  11. Procédé selon la revendication 10, caractérisé en ce que, selon l'opération de pressage de la presse à cadence rapide (15), la succession de couches faite d'une ou plusieurs couches de matériau imprégnées non imprimées, en particulier couches de papier (17), d'une couche de la pièce d'œuvre (3, 20) imprimée au préalable et éventuellement imprimée et d'une autre couche de matériau, en particulier un panneau de matériau à base de bois (13), est pressée pour former une unité fixée et durcie.
EP10757759.5A 2009-09-23 2010-09-21 Procédé de fabrication d'une pièce d'usinage portant une impression numérique Active EP2480416B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10757759T PL2480416T3 (pl) 2009-09-23 2010-09-21 Sposób wytwarzania zadrukowanego cyfrowo przedmiotu obrabianego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009044091.7A DE102009044091B4 (de) 2009-09-23 2009-09-23 Verfahren zur Herstellung eines digitalbedruckten Werkstückes
PCT/EP2010/063861 WO2011036141A1 (fr) 2009-09-23 2010-09-21 Procédé de fabrication d'une pièce d'usinage portant une impression numérique

Publications (2)

Publication Number Publication Date
EP2480416A1 EP2480416A1 (fr) 2012-08-01
EP2480416B1 true EP2480416B1 (fr) 2020-04-08

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ID=43501146

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EP10757759.5A Active EP2480416B1 (fr) 2009-09-23 2010-09-21 Procédé de fabrication d'une pièce d'usinage portant une impression numérique

Country Status (6)

Country Link
EP (1) EP2480416B1 (fr)
DE (1) DE102009044091B4 (fr)
ES (1) ES2798274T3 (fr)
LT (1) LT2480416T (fr)
PL (1) PL2480416T3 (fr)
WO (1) WO2011036141A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044091B4 (de) 2009-09-23 2018-08-23 Hymmen GmbH Maschinen- und Anlagenbau Verfahren zur Herstellung eines digitalbedruckten Werkstückes
DE102010037632A1 (de) 2010-09-17 2012-03-22 Theodor Hymmen Verwaltungs Gmbh Verfahren zur Herstellung eines digitalbedruckten Werkstückes
DE102013101521B4 (de) 2013-02-15 2018-08-23 Peter Schubert Flächenelement mit aufgebrachtem Dekor und Verfahren zur Herstellung des Flächenelementes
ES2841524T3 (es) * 2014-01-10 2021-07-08 Agfa Nv Fabricación de laminados decorativos por inyección de tinta
US11203224B2 (en) 2018-08-30 2021-12-21 Interface, Inc. Digital printing for flooring and decorative structures

Citations (8)

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US20040086678A1 (en) 2002-11-01 2004-05-06 Chen Hao A. Surface covering panel
DE10360187A1 (de) 2003-12-20 2005-07-14 Theodor Hymmen Holding Gmbh Verfahren und Vorrichtung zur Herstellung einer beschichteten Platte
JP2005238035A (ja) 2004-02-24 2005-09-08 Dainippon Toryo Co Ltd 化粧板の製造方法
DE102006007976B4 (de) 2006-02-21 2007-11-08 Flooring Technologies Ltd. Verfahren zur Veredelung einer Bauplatte
DE102006022774B3 (de) 2006-05-16 2007-11-22 Flooring Technologies Ltd. Verfahren zur Erzeugung desselben Dekors unter Verwendung eines Musterdrucks sowie Vorrichtung dazu
EP2042344A2 (fr) 2007-09-26 2009-04-01 Dekor-Kunststoffe GmbH Procédé de fabrication d'éléments de revêtements et dispositif de fabrication correspondant
DE102007049784A1 (de) 2007-10-17 2009-04-23 Bauer, Jörg R. Mittels eines Tintenstrahldruckverfahrens bedruckbare Bauplatte mit einem Grundkörper mit poröser Oberfläche sowie Verfahren zum Herstellen einer Bauplatte
WO2011036141A1 (fr) 2009-09-23 2011-03-31 Theodor Hymmen Holding Gmbh Procédé de fabrication d'une pièce d'usinage portant une impression numérique

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ATE178535T1 (de) 1994-08-25 1999-04-15 Canon Kk Aufzeichnungsmedium und bildherstellungsverfahren unter verwendung desselben
SE516696C2 (sv) 1999-12-23 2002-02-12 Perstorp Flooring Ab Förfarande för framställning av ytelement vilka innefattar ett övre dekorativt skikt samt ytelement framställda enlit förfarandet
US20030041962A1 (en) 2001-09-05 2003-03-06 John R. Johnson Digitally printed products and process
CA2492712C (fr) 2003-06-24 2008-04-29 J.M. Huber Corporation Appareil pour l'application d'empreintes sur des planches
ATE448086T1 (de) 2006-12-21 2009-11-15 Agfa Graphics Nv Tintenstrahldruckverfahren und -tintensätze

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Publication number Priority date Publication date Assignee Title
US20040086678A1 (en) 2002-11-01 2004-05-06 Chen Hao A. Surface covering panel
DE10360187A1 (de) 2003-12-20 2005-07-14 Theodor Hymmen Holding Gmbh Verfahren und Vorrichtung zur Herstellung einer beschichteten Platte
JP2005238035A (ja) 2004-02-24 2005-09-08 Dainippon Toryo Co Ltd 化粧板の製造方法
DE102006007976B4 (de) 2006-02-21 2007-11-08 Flooring Technologies Ltd. Verfahren zur Veredelung einer Bauplatte
DE102006022774B3 (de) 2006-05-16 2007-11-22 Flooring Technologies Ltd. Verfahren zur Erzeugung desselben Dekors unter Verwendung eines Musterdrucks sowie Vorrichtung dazu
EP2042344A2 (fr) 2007-09-26 2009-04-01 Dekor-Kunststoffe GmbH Procédé de fabrication d'éléments de revêtements et dispositif de fabrication correspondant
DE102007049784A1 (de) 2007-10-17 2009-04-23 Bauer, Jörg R. Mittels eines Tintenstrahldruckverfahrens bedruckbare Bauplatte mit einem Grundkörper mit poröser Oberfläche sowie Verfahren zum Herstellen einer Bauplatte
WO2011036141A1 (fr) 2009-09-23 2011-03-31 Theodor Hymmen Holding Gmbh Procédé de fabrication d'une pièce d'usinage portant une impression numérique

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Title
ANONYMOUS: "Technisches Merkblatt Gegenüberstellung CPL - HPL", EEGGER, pages 1 - 6

Also Published As

Publication number Publication date
LT2480416T (lt) 2020-06-25
DE102009044091B4 (de) 2018-08-23
ES2798274T8 (es) 2020-12-30
PL2480416T3 (pl) 2020-09-07
WO2011036141A1 (fr) 2011-03-31
DE102009044091A1 (de) 2011-07-07
EP2480416A1 (fr) 2012-08-01
ES2798274T3 (es) 2020-12-10

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