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EP3656566B1 - Procédé d'impression de baguettes profilées allongées et baguettes profilées - Google Patents

Procédé d'impression de baguettes profilées allongées et baguettes profilées Download PDF

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Publication number
EP3656566B1
EP3656566B1 EP19209121.3A EP19209121A EP3656566B1 EP 3656566 B1 EP3656566 B1 EP 3656566B1 EP 19209121 A EP19209121 A EP 19209121A EP 3656566 B1 EP3656566 B1 EP 3656566B1
Authority
EP
European Patent Office
Prior art keywords
printed
profile strip
profile
printing
print
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.)
Active
Application number
EP19209121.3A
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German (de)
English (en)
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EP3656566A1 (fr
Inventor
Sebastian Kurz
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.)
Karl Pedross AG
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Karl Pedross AG
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Publication date
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Publication of EP3656566A1 publication Critical patent/EP3656566A1/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F17/00Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/08Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
    • B41F17/14Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F17/00Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/006Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on curved surfaces not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041Digital printing on surfaces other than ordinary paper
    • B41M5/0076Digital printing on surfaces other than ordinary paper on wooden surfaces, leather, linoleum, skin, or flowers

Definitions

  • the invention relates to a method for printing elongate profile strips, in particular skirting boards, with a pattern, in particular a wood grain decor, in which, in order to form a three-dimensionally structured surface, a haptic ink is first applied to at least a partial area of a basic profile moved relative to the print head arrangement by means of digital direct printing by means of a print head arrangement is printed on the profile strip, and that a colored pattern is then printed in the correct position on the previously three-dimensionally structured printed surface by means of a further print head arrangement, also by means of digital direct printing.
  • the invention also relates to a profile strip, in particular a skirting board, with a three-dimensionally structured pattern printed on it.
  • the object of the invention is to specify a method for printing profile strips, in which patterns, in particular wood grain reproductions, can be applied with high reproduction accuracy and with a realistic appearance.
  • a three-dimensional surface structure is formed by digital direct printing. This can be used to achieve a realistic look, especially the reproduction of wood that has natural peaks and valleys, i.e. a 3D structure.
  • the haptic ink and/or the colored pattern is printed on spatially differently aligned partial areas of the profile bar in such a way that the different print areas are partially in an overlapping zone overlap.
  • These overlapping zones generally lie along a longitudinal edge of the molding or along a transition from a flat area to a curved area.
  • the position of the colored pattern must be exactly in the correct position to the underlying, three-dimensionally printed haptic ink.
  • This can be achieved by printing both the haptic ink and the colored pattern with digital direct printing, i.e. without transfer foils or indirectly printed application rollers.
  • An inkjet or laser printing process is particularly suitable for digital direct printing, which applies the color or ink directly from the print heads to the workpiece, in particular the profile strip, without contact.
  • application in two different printing processes is also conceivable and possible, it is more favorable to apply the printing with the haptic ink on the one hand and with the colored pattern on the other in one and the same printing process, i.e. in one run, driven by a transport device that has a electronic control device is synchronized with the printheads.
  • printing in one pass allows higher production speeds and, on the other hand, it also enables the relative alignment, i.e. the positional correctness, between the haptic ink and the colored pattern to be implemented exactly.
  • the workpiece (basic profile of the profile bar) is preferably driven and the print heads are essentially stationary during operation, at least as far as the alignment in the transport direction/longitudinal direction of the profile bar is concerned.
  • the invention also relates to a profile strip--preferably produced using the method described above.
  • the profile strip according to the invention is characterized by the features of claim 12.
  • FIG. 1a illustrated basic profile 1 of a profile strip 100 has, for example, the dimensions of 16 ⁇ 60 mm.
  • the base profile 1 can consist of finger-jointed spruce wood, but also of any other material, in particular wood, plastic or metal.
  • flat panels such as are used for floors, for example, one has to print on spatially differently aligned partial areas 1a, 1b, 1c of the profile strip.
  • the back 1d is also profiled, but this is not critical since it is not printed.
  • the basic profile 1 of the profile strip 100 It is relatively easy to provide the basic profile 1 of the profile strip 100 with a primer 2 that has the same layer thickness everywhere. This can be done either inline in a printing process above the transport device described later, or also outside of an inline printing process.
  • the purpose of the primer 2 is to achieve good adhesion of the haptic ink 3 that is applied later to the base profile 1 .
  • water-based or UV paints i.e. paints that harden under the influence of UV light
  • other primers 2 are also entirely conceivable and possible.
  • a haptic ink 3 is now printed onto the primer 2, namely onto the planar partial area 1a and 1b, as well as onto the curved transitional area (longitudinal edge) 1c.
  • the haptic ink 3 then forms a three-dimensionally structured surface, which simulates a wood grain in the present example. A realistic image of natural wood is thus possible.
  • wood designs can be "imitated", but also other three-dimensional surface structures.
  • the three-dimensionally structured haptic ink 3 has depressions 3a and elevations 3b. Overall, it is preferably provided that the thickness of the printed haptic ink 3 is at least in regions over 100 ⁇ m, preferably over 200 ⁇ m.
  • the variation in thickness ie the difference between the height of the depression 3a and the elevation 3b, is preferably more than 100 ⁇ m, preferably more than 200 ⁇ m, distributed over the surface, in order to achieve a realistic 3D image.
  • FIG. 1e a colored pattern is now printed in the correct position on this three-dimensionally structured surface according to the method according to the invention.
  • This pattern bears the reference number 4.
  • figure 1 shows a (finished) profile strip 100.
  • the printed colored pattern 4 is adapted to the underlying haptic ink 3 with its 3D structure. This can be done by only printing partial areas 4a and omitting partial areas 4b. The color of the haptic ink 3 then shines through in these partial areas 4b. This is especially possible if it has a basic color that deviates from white. However, it is preferably provided that the printing with the colored pattern 4 extends over the entire surface to be printed, with the different areas of the 3D structure (in particular elevations on the one hand and depressions on the other) simply being printed with different colors, but overall the layer thickness the color of the colored pattern 4 runs essentially the same everywhere on the three-dimensionally structured surface of the haptic ink 3 .
  • a continuous layer of clear lacquer 5 is finally applied over the colored pattern 4 in order to protect the underlying design.
  • This layer of clear lacquer should not be too thick so as not to cover up the three-dimensional haptics created previously.
  • FIG. 2 An exemplary embodiment of a device, shown in simplified form, for carrying out the method according to the invention is shown in figure 2 shown.
  • a transport device is generally shown that has the task of holding the base profile 1 of the profile strip 100 lying thereon and moving it in the transport direction 7, which coincides with the longitudinal direction of the profile strip 100.
  • the holding device 8 is shown only schematically; it can, for example, work with negative pressure and be either fixed or also moved. When holding devices 8 are moved along, clamps can also be provided which hold the basic profile 1 exactly.
  • the transport device 6 ensures that the basic profile 1 is moved under the print head arrangements 10 and 12 described below.
  • An electronic control device 9 controls the transport on the one hand and the print head assemblies 10 and 12 on the other hand, as well as the curing and drying stations 11 and 13.
  • a haptic ink 3 is applied to the basic profile 1 of the profile bar 100 in order to realize a three-dimensional surface structure.
  • UV light is radiated in the curing station 11 in order to allow the UV-curable ink to cure at least partially before a colored pattern 4, in particular a wood decor, is applied in the correct position in the print head arrangement 12.
  • This can also consist of a UV-curable ink, for which purpose a curing or drying station 13 is provided.
  • the printing of basic profiles 1 represents a problem in particular because the area to be printed is generally divided into a number of sub-areas, which adjoin one another but are spatially differently aligned.
  • the illustrated embodiment shows a typical basic profile 1, which has a front side 1a, a top side 1b and a curved transition area 1c in between. These three areas 1a, 1b, 1c are to be printed with a continuous pattern, in particular a wood grain decor.
  • a printhead arrangement 12 can be used in which some printheads are pivotably arranged. This is indicated by an arrow 14. the The pivoting direction runs about an axis which is parallel to the transport direction 7 which coincides with the longitudinal direction of the profile strip 100 . In general, a pivoting range of 0 to 90° is sufficient. The pivoting can be adjusted to a specific type of profile strip by a one-off adjustment, in such a way that the printing is carried out as perpendicularly as possible to the area to be printed. With a curved surface 1c, a compromise has to be made here.
  • the curved surface 1c undergoes a substantially 90° curvature, so it will be beneficial to position the printheads in the first (rear) portion 12' of the printhead assembly 12 at about 45° relative to the printheads in the second (front) portion 12''. of the printhead assembly 12.
  • figure 4 1 is a simplified molding 100 having a flat front face 1a, a flat top face 1b and an intermediate curved portion 1c along the longitudinal edge.
  • the aim is now to print these three areas 1a, 1b, 1c precisely with a continuous decor without leaving any unprinted areas.
  • Pivoting printheads or printheads that can be adjusted in other ways can be used for this purpose, as for example in figure 3 are shown.
  • only two areas 12" and 12' are shown.
  • For the profile strip 100 according to figure 4 would a third area to be considered for printing on the top side 1b.
  • the first area 12' of the print head arrangement 12 it is also possible for the first area 12' of the print head arrangement 12 to take over at once with the curved area 1c. In any case, it works figure 4 from three areas of the printhead assemblies.
  • the print heads in the first area 12′ of the print head arrangement which are aligned essentially perpendicularly to the top side 1b, could print the area 14 that still extends into the area 1c in an overlapping zone 14a, i.e. the subsequent curved area 1c of the longitudinal edge.
  • the transition region 1c can then be printed with at least one print head pivoted essentially at 45°.
  • This print area is denoted by 15 and has an overlapping zone 15a and an overlapping zone 15b.
  • the overlapping zone 15a is not absolutely necessary, it can be provided. However, it is also sufficient if the overlapping zone 15a overlaps with the printing 15.
  • the overall width of the overlapping zone is denoted by B and is advantageously between 0.5 mm and 5 mm for profile strips 100 .
  • the print heads for the front side 1a are aligned essentially perpendicularly to this and mainly print on the area 17, which in turn can have an overlapping zone 17a.
  • the overlapping of the print areas in differently aligned or curved sub-areas of the base profile 1 of the profile strip 100 achieves a continuous, exact, clean printed image without the underlying layer showing through.
  • the print image is particularly accurate when the print head is aligned exactly perpendicular to the surface. In the case of curved surfaces, this is basically not possible with a single print head or a single print head arrangement 12 . But if two areas 12' and 12" of a printhead assembly 12 interact with different pivot positions, a good print image can also be achieved in an overlapping area that is not exactly perpendicular to any of the print heads.
  • this software control can be used to ensure that the color application in the overlapping zones (transition zones) is reduced compared to those zones where only a single application takes place, so that - if these overlapping zones are printed by two different print heads - the color application is not doubled, but overall the correct color application takes place. In the overlapping zones, two print heads print in a reduced manner.
  • printhead assemblies 10 and 12 as a whole consist of several individual print heads, which are designed for the application of different colors, in particular cyan, magenta, yellow and black.
  • the invention is not limited to the exemplary embodiments shown. In particular, differently profiled profile strips can also be used.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Printing Methods (AREA)

Claims (14)

  1. Procédé d'impression de baguettes profilées (100) allongées, en particulier de baguettes de socle, d'un motif (4), en particulier d'un motif décoratif de grain de bois, dans lequel une encre haptique (3) est appliquée par impression sur au moins une zone partielle d'un profil de base (1), déplacé par rapport à un ensemble de tête d'impression (10), de la baguette profilée (100) pour réaliser une surface structurée de manière tridimensionnelle d'abord au moyen d'une impression directe numérique par l'ensemble de tête d'impression (10), puis un motif (4) en couleur est appliqué par impression en position correcte sur la surface imprimée au préalable avec une structuration tridimensionnelle au moyen d'un autre ensemble de tête d'impression (12) également au moyen d'une impression directe numérique, dans lequel l'encre haptique (3) et/ou le motif (4) en couleur sont appliqués par impression de manière à se chevaucher - de préférence le long d'un bord longitudinal de la baguette profilée (100) ou le long d'une transition depuis une zone plate (1a, 1b) dans une zone incurvée (1c) - sur des zones partielles orientées différemment spatialement de la baguette profilée (100) dans différentes zones d'impression se chevauchant en partie dans une zone de chevauchement (14a, 15a, 15b, 17a), caractérisé en ce que sont utilisées, pour l'impression de zones partielles orientées différemment spatialement de la baguette profilée (100), à l'intérieur de l'ensemble de tête d'impression (10) pour l'encre haptique (3) des têtes d'impression orientées différemment spatialement, montées de préférence de manière à pouvoir pivoter.
  2. Procédé selon la revendication 1, caractérisé en ce que la zone partielle imprimée de la baguette profilée (100) comprend une face incurvée (1c) ou un bord longitudinal de la baguette profilée (100).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la zone partielle imprimée de la baguette profilée (100) comprend par ailleurs au moins une face plane (1a, 1b) de la baguette profilée (100), qui se situe dans le prolongement de la face incurvée (1c) ou du bord longitudinal.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que sont utilisées, pour imprimer des zones partielles orientées différemment spatialement de la baguette profilée (100), à l'intérieur de l'ensemble de tête d'impression (12) pour le motif (4) en couleur, des têtes d'impression orientées différemment spatialement, montées de préférence de manière à pouvoir pivoter.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'encre haptique (3) est appliquée par impression sur des zones partielles orientées différemment spatialement de la baguette profilée (100) au moyen de têtes d'impression séparées les unes après les autres.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le motif (4) en couleur est appliqué par impression sur des zones partielles orientées différemment spatialement de la baguette profilée (100) au moyen de têtes d'impression séparées les unes après les autres.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la zone de chevauchement (14a, 15a, 15b, 17a) présente une largeur de 0,5 mm à 5 mm.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la baguette profilée (100) est appliquée avant l'impression de l'encre haptique (3) avec un apprêt (2) - de préférence à épaisseur de couche identique partout -.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la baguette profilée (100) est appliquée après l'application par impression du motif (4) en couleur avec une couche de vernis transparent (5) - de préférence à épaisseur de couche identique partout -.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'une impression à jet d'encre et/ou une impression laser sont employées en tant qu'impression directe numérique.
  11. Baguette profilée (100), en particulier baguette de socle, avec un motif (4) appliqué par impression, en particulier fabriquée selon un procédé des revendications 1 à 10, caractérisée en ce que la baguette profilée (100) présente :
    - un profil de base (1), de préférence en un matériau dérivé du bois, en métal ou en matière plastique,
    - une encre haptique (3) appliquée par impression par endroits sur celui-ci, qui réalise une surface structurée tridimensionnelle sur la surface de préférence sensiblement lisse du profil de base (1), et
    - un motif (4) en couleur appliqué par impression en position correcte sur l'encre haptique (3) avec de préférence une épaisseur de couche homogène.
  12. Baguette profilée selon la revendication 11, caractérisée en ce que l'encre haptique (3) appliquée par impression et/ou le motif (4) en couleur appliqué par impression chevauchent des zones partielles orientées différemment spatialement, adjacentes dans des zones de chevauchement (14a, 15a, 15b, 17a).
  13. Baguette profilée selon l'une quelconque des revendications 11 ou 12, caractérisée en ce que l'épaisseur de l'encre haptique (3) appliquée par impression est au moins par endroits supérieure à 100 µm, de préférence supérieure à 200 µm.
  14. Baguette profilée selon l'une quelconque des revendications 11 à 13, caractérisée en ce que l'épaisseur de l'encre haptique (3) appliquée par impression répartie sur la face imprimée varie de plus de 100 µm, de préférence de plus de 200 µm.
EP19209121.3A 2018-11-23 2019-11-14 Procédé d'impression de baguettes profilées allongées et baguettes profilées Active EP3656566B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA51037/2018A AT521998B1 (de) 2018-11-23 2018-11-23 Verfahren zum Bedrucken von länglichen Profilleisten und Profilleisten

Publications (2)

Publication Number Publication Date
EP3656566A1 EP3656566A1 (fr) 2020-05-27
EP3656566B1 true EP3656566B1 (fr) 2022-06-29

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Publication number Priority date Publication date Assignee Title
DE102021104499A1 (de) * 2021-02-25 2022-08-25 Homag Gmbh Vorrichtung und Verfahren zur Vergütung eines Werkstücks
DE102023004022A1 (de) 2023-10-04 2025-04-10 Michael Weinig Aktiengesellschaft Maschine und Verfahren zum Aufbringen wenigstens einer Grafik auf einen Holzstab

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
DE10323412B4 (de) * 2003-05-23 2007-07-05 Bauer, Jörg R. Verfahren und Vorrichtung zum Herstellen eines Bauteils mit einer Oberfläche vorbestimmten Aussehens
US20070221344A1 (en) * 2006-03-27 2007-09-27 Comfortex Corporation Digitally printed slats
DE102007021767A1 (de) * 2007-05-09 2008-11-13 Bauer, Jörg R. Verfahren und Vorrichtung zum Bedrucken eines Bauteils mit zwei zueinander geneigten Oberflächenbereichen mittels eines digitalen Druckverfahrens
TW201029856A (en) * 2009-01-16 2010-08-16 Echelon Laser Systems Lp Surface marked articles, related methods and systems
AT508572B1 (de) 2009-07-16 2011-05-15 Karl Pedross Ag Vorrichtung zum bedrucken von starren werkstücken
DE102010024785A1 (de) * 2010-06-23 2011-12-29 Baumer Innotec Ag Verfahren und Vorrichtung zum Digitaldruck von Dekoren
JP2013230625A (ja) * 2012-04-27 2013-11-14 Mimaki Engineering Co Ltd 印刷方法および印刷装置
US20140255645A1 (en) * 2013-03-07 2014-09-11 Foxbox Originals Llc Direct texture print production
DE102016003924A1 (de) * 2016-03-31 2016-09-01 Daimler Ag Verfahren zum Färben von Holzzierleisten für Fahrzeuge und Fahrzeug mit einem solchen Holzzierteil

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AT521998B1 (de) 2021-12-15
AT521998A1 (de) 2020-07-15

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