DE102009044802A1 - Method and device for producing a three-dimensional surface structure on a workpiece - Google Patents

Method and device for producing a three-dimensional surface structure on a workpiece

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Publication number
DE102009044802A1
DE102009044802A1 DE102009044802A DE102009044802A DE102009044802A1 DE 102009044802 A1 DE102009044802 A1 DE 102009044802A1 DE 102009044802 A DE102009044802 A DE 102009044802A DE 102009044802 A DE102009044802 A DE 102009044802A DE 102009044802 A1 DE102009044802 A1 DE 102009044802A1
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DE
Germany
Prior art keywords
workpiece
characterized
radiation
method according
preferably
Prior art date
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Granted
Application number
DE102009044802A
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German (de)
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DE102009044802B4 (en
Inventor
Dr. Pankoke René
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, DE
Original Assignee
Hymmen Theodor Holding GmbH
Theodor Hymmen Holding GmbH
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Priority to DE102009044710.5 priority Critical
Priority to DE102009044710 priority
Application filed by Hymmen Theodor Holding GmbH, Theodor Hymmen Holding GmbH filed Critical Hymmen Theodor Holding GmbH
Priority to DE102009044802.0A priority patent/DE102009044802B4/en
Publication of DE102009044802A1 publication Critical patent/DE102009044802A1/en
Application granted granted Critical
Publication of DE102009044802B4 publication Critical patent/DE102009044802B4/en
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    • 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
    • B41M5/0029Formation of a transparent pattern using a liquid marking fluid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers, thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers, thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002Heating or irradiating, e.g. by UV or IR, or drying of copy material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/06Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
    • 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
    • B41M5/0047Digital printing on surfaces other than ordinary paper by ink-jet printing
    • 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
    • B41M5/0064Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0045After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or film forming compositions cured by mechanical wave energy, e.g. ultrasonics, cured by electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams, or cured by magnetic or electric fields, e.g. electric discharge, plasma
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams

Abstract

A method and a device for producing a three-dimensional surface structure on a workpiece include the following steps: feeding a workpiece printed with a decorative image to a processing station; Spraying a transparent, radiation-curing lacquer through a multiplicity of nozzle openings onto the surface of the workpiece in the form of lacquer droplets, the individual lacquer droplets having a volume of 0.5-300 μl, preferably 3-80 μl, particularly preferably 10-50 μl, have, and the number of paint droplets per unit area and / or the volume of the paint droplets is done by computer control according to a digital template; and curing the transparent lacquer with radiation, preferably by means of UV radiation.

Description

  • The present invention relates to a method and a device for producing a three-dimensional surface structure on a workpiece, in particular on a web-shaped or plate-shaped workpiece.
  • For the production of decorative surfaces in the field of indoor and outdoor applications, eg. B. for furniture surfaces such as cabinets, table tops, floorboards, such as laminate flooring or real wood parquet floor) or wall or ceiling panels, there are according to the current state of the art, various methods both for decorative printing of these surfaces and for applying a haptic three-dimensional surface structure ,
  • In the field of the production of laminate flooring, for example, a printed decorative paper, white, is printed in a gravure printing machine with a decor (for example an oak, beech or maple replica) according to the current state of the art. In a further step, this so printed paper with a thermosetting resin system, eg. As an amino resin, such as a urea-melamine mixture o. Ä., Impregnated and dried back to a defined residual moisture. This so treated, printed and impregnated decor paper is in a third step in a hot press, z. B. a short-cycle press or a double belt press, pressed onto a wood-based panel, at the same time the resin with which the paper has been impregnated, is cured.
  • Through the use of a structured press plate which has ridges and pits by an etching process, a textured surface is created during the curing process, which is often designed to match the wood grains of the printed wood decor.
  • In the state of the art known today, this method can be modified in many variants. So z. B. applied above or below the printed decorative paper more impregnated papers. The plate-shaped workpieces used can, for. As chipboard, MDF boards or HDF boards, which are produced according to known prior art.
  • Similarly, a so-called decorative laminate, such. B. a "high pressure laminates", a so-called HPL, or a "continuous pressure laminates", a so-called CPL, of several impregnated papers, of which at least one decorative printed paper, in a pressing operation to a usually between 0.2 and 1.2 mm thick laminate pressed together. This thus obtained abrasion-resistant and very resistant laminate (often as a web) is then glued, for example, to a 16- or 20 mm thick chipboard to give as a final product a kitchen countertop.
  • In a similar manner, furniture panels can be produced which are coated and embossed on one or both sides.
  • In an alternative known method, the print is produced directly on a precoated plate at the location of a printed and then impregnated paper. For this purpose, with the aid of an indirect gravure printing method in which rotogravure cylinder prints via an intermediate, rubberized transfer cylinder on the plate passing below, are generated. In an alternative method, the decor is printed directly over a multi-pass or single-pass digital printer on the precoated plate or pre-coated sheet material.
  • In the case of digital printing, the prior art very often uses a UV-curable digital ink containing, as its main base, an acrylate which has been treated with special photoinitiators and thereby irradiated, e.g. B. cured with UV rays or electron beams. In order to give such a decorative coated plate a scratch-resistant surface and to provide this surface with a structured haptic appearance, so that the structure has a relation to the decorative image printed underneath, a transparent, radiation-curing acrylate lacquer coating is usually also provided as topmost layer.
  • Since the decorative printed surface underneath can also show a variety of other decorative surfaces in addition to wood appearance, such. B. stone appearances, tiles or even a fantasy pattern, the overlying structure should be adapted to the decorative pressure in a variety of different cases: The joints of a tile replica should z. B. recessed against the tile surface shown.
  • According to the prior art, this structure is z. B. applied over a grooved or with the help of a laser structured, rubberized applicator roll ( DE 10 2007 019 871 A1 ).
  • In a directly printed, plate-shaped workpiece, which is to be structured with a radiation-curing paint system in the surface, that is to obtain a structured surface, there is according to the current state of the art ( DE 10 2007 019 871 A1 ) significant limitations in terms of fineness of the structure. According to the current state of the art, with the structured roller a structure width of <1 mm can be printed only with difficulty. A preferred structural width of <0.2 mm is not possible according to the prior art.
  • Likewise, it is not possible, any structures that z. B. also transversely to the direction of passage significant features have (see, for example, tile joints longitudinal and transverse!) To produce. With the current state of the art are particularly wood grains, which run mostly in the direction of production, generated.
  • Likewise, it is only with great limitations and with great technical effort possible to create a structure that adapts synchronously to the underlying printed image. In particular, if the printed image changes quickly and only small lot sizes are produced, the effort z. B. to use a new structured roller in the production machine, very large. A quick change of structures is only possible with a correspondingly great effort.
  • Likewise, it is not possible in the prior art, the structure of transparent paints, the different properties, such. B. gloss levels, have to produce. The variant which is feasible according to the prior art in short-cycle presses with Melaminverpressung, namely in a recess ("pore") to produce a low gloss level and above the pores in the normal range, a high gloss level, or vice versa in the pore a high gloss level and above the pore a matte structure, is not possible with the acrylate surface according to the prior art.
  • It is the object of the method according to the invention and of the device according to the invention to provide a structured surface which avoids the abovementioned disadvantages.
  • This object is achieved by a method having the features of claim 1 or 15, as well as a device having the features of claim 18. Advantageous embodiments are described in the subclaims.
  • By means of the invention, a workpiece is to be coated with a radiation-curing lacquer, it being possible for the lacquer layer to be produced synchronously with the underlying printed decoration with little technical effort. The lacquer layer can be quickly changed from one printed section to the next printed section, and which can produce defined matt and defined shiny spots in the surface structure with simultaneous, at least partial transparency.
  • In the present invention, a surface texture or a structured surface means a tactile unevenness on a plate or a sheet-like workpiece having a height difference of 1 μm to 3 mm between the deepest and the highest point, and which is at least partially transparent.
  • The method according to the invention can also be used to produce a so-called synchronous pore. Thus, for the present invention, it is meant that the generated three-dimensional surface texture matches the underlying printed decorative image. For example, in an example embodiment with a printed wood decor having a longitudinal grain and a printed knothole at one location, the generated surface structure would also include a three-dimensional haptic, longitudinal grain corresponding to the underlying printed grain at the points with the grain and a round or oval textured depression at the location of the printed branch hole.
  • In this context, a synchronous pore is to be used in this context in the present invention if a section of length l and width b which is optically recognizable in the decorative image agrees with an overlying, three-dimensional, tactile structured surface section in the form that the section of the structured The surface lies on the section visible in the printed decorative image and differs in length and width by a maximum of 3 mm; in a preferred embodiment max. 1 mm; in a particularly preferred embodiment max. 0.5 mm deviates. In this particularly preferred embodiment, therefore, the section present in the three-dimensional surface structure would have a length of max. l +/- 0.5 mm and a width of b +/- 0.5 mm, and the starting point as 0-point of a coordinate system thought in the X and Y direction each also a maximum of 0.5 mm from the starting point of the underneath printed decor image differ.
  • In one embodiment of the method according to the invention, it is provided that on a pretreated workpiece, for. As a wood-based panel such as particle board or MDF board, in a first step, a surface structure by a transparent or monochrome, z. B. white radiation-curing paint is applied. The application of this transparent or monochrome z. B. white radiation-curing paint happens as well as above already for the invention Method described by one or more printheads or printing modules with or without intermediate drying and with another printhead or printing module. In this embodiment, therefore, the surface structure is applied before the printing decor of the decorative image. In a subsequent method step, the decorative image is then printed on the workpiece via a printing station. In this case, in a preferred embodiment, this subsequent printing of the decorative image can likewise be effected by means of an inkjet printing. Alternatively, a rotary printing process, for. B. an indirect gravure printing process, by means of an intermediate, rubberized applicator roll. This intermediate, rubberized applicator roll can bring the applied color into the structure and the protrusions and depressions formed thereby. However, preferred is an ink-jet printing process in which there is much greater certainty that the ink will also penetrate the peaks and valleys ("mountains and valleys"), thus creating a visually pleasing, closed printed surface.
  • The invention will be explained in more detail with reference to the accompanying figures. Show it:
  • 1 : a schematic representation of a device according to the invention with the workpiece to be structured ( 1.1 ), a feeder ( 1.2 ), a printing device shown only as a box ( 1.3 ), another feeding device ( 1.4 ) and a first print head for a first transparent lacquer ( 1.5 ), alternatively a series of print heads ( 1.5 ), a drying unit ( 1.7 ) respectively. ( 1.8 ) and a second printhead ( 1.6 ) for another transparent or the same transparent varnish as ( 1.6 ), alternatively a series of print heads ( 1.6 ); the underlying conveyor system ( 1.9 ).
  • 2a : In 2 is the workpiece to be structured already decorated ( 2.1 ) is occupied with individual droplets, with an example of a large droplet at the upper end of the volume, for example 300 pl ( 2.2 ), as well as a smaller droplet, for example 10 pl ( 2.3 ). The resulting surface structure is the envelope of the deposited droplets ( 2.4 ); the maximum height of the structure ("structure height") is denoted by H ( 2.5 ).
  • 2 B In 2 B is the undesirable flow of an applied droplet before curing by the droplet immediately after application ( 2.6 ) and after a time t until hardening by ( 2.6a ). The height after the application of the droplet is represented by h, the height after the flow after the time t with h '.
  • 3 a schematic representation of a printed workpiece according to another embodiment.
  • 4 a schematic representation of a method according to the invention.
  • A plate-shaped or web-shaped workpiece 1.1 is via a feeding device 1.2 to a printing press 1.3 supplied, wherein the printing machine as a conventional printing machine, for. As gravure printing machine or flexographic printing press or roll off-set printing machine can be performed. In an alternative embodiment, this can also be designed as a digital printing machine.
  • After the plate-shaped or web-shaped workpiece has been decorative printed, it is via a further feed device 1.4 a first digital printhead 1.5 fed. This first digital printhead 1.5 can also be implemented as a printing module, wherein a printing module includes a number of individual printheads, which are each connected individually or together to a paint supply system. This printhead or these number of printheads in the print module are designed as inkjet printheads, preferably as piezo-controlled inkjet printheads. In a particularly preferred embodiment, the printheads are 1.5 As print heads with variable grayscale, ie they can different droplet sizes on the workpiece 1.1 muster. The transparent paint that passes through these printheads 1.5 on the workpiece 1.1 is applied is provided in a particular embodiment as a radiation-curing paint, wherein the radiation curing by a UV radiation source 1.7 can be done. In a particular embodiment, this radiation source 1.7 also be designed as an electron beam source. The inkjet printheads ( 1.5 ) give individual paint droplets on the workpiece 1.1 with a single paint droplet having a volume of 0.5-300 pl, preferably a volume of 3-80 pl, more preferably a volume of 10-50 pl. The resolution, ie the amount of individual paint droplets per square centimeter surface of the workpiece is in the feed direction (arrow in 1 ) by the speed of the workpiece 1.1 and the frequency with which the paint droplets from the printheads 1.5 be delivered, controlled. In the direction transverse to the feed direction, the resolution is the number of nozzles of the digital printheads 1.5 , which are available per unit length, controlled.
  • In a preferred embodiment, the resolution across the feed direction is between 10 to 500 dpi (dots per inch, ie droplets per 2.54 cm), more preferably 50-400 dpi. In Feed direction (arrow direction in 1 ), the resolution is in the same range at a value given by the velocity and the frequency at which the droplets are deposited on the surface. The frequency at which the droplets are discharged is therefore chosen so that at a feed rate of 5-100 m / min., Preferably 10-50 m / min, a resolution within the range specified above can be achieved.
  • After passing through the first application station of the transparent, radiation-curing paint with the print head 1.5 or the print module 1.5 with a variety of printheads, the applied paint is through the radiation source 1.7 hardened. In another embodiment, the radiation source 1.7 so matched to the chemical properties of the paint that it is not completely cured, ie not completely crosslinked, but only partially crosslinked.
  • Thereafter, the plate-shaped or web-shaped workpiece runs under a second print head 1.6 or a second printing module having a plurality of printheads 1.6 ago. The order quantities and droplet sizes are identical to the one or the other 1.5 selected. The second printhead 1.6 is used to either achieve a larger order quantity and texture depth in the structured surface. In an alternative embodiment, the transparent paint used in the printheads 1.6 is printed, even a different gloss than that in the printheads 1.5 used. For example, in the printheads 1.6 After printing, the lacquer after varnishing gives a very matte finish, while that in the printheads 1.5 after printing, the lacquer that is printed gives a high-gloss surface.
  • In an alternative embodiment, the glossy and the matt lacquer can also be reversed. After passing through the second printhead or second printhead module with a plurality of printheads 1.6 will be on the surface of the workpiece 1.1 applied paint in a second radiation source 1.8 hardened. In an alternative embodiment, it can only be hardened here and completely cured in a following radiation source.
  • In an alternative embodiment of the method according to the invention and the device according to the invention, in addition to the printheads or printhead rows 1.5 and 1.6 a variety of other print head series with or without intermediate drying 1.7 and 1.8 be attached. In this case, the desired structure of the surface, which in 2 as a complete application of radiation-curing paint 2.5 is shown, be combined of several layers, each with a plurality of different sized droplets. As an example, here is in 2 (a) a big drop with the largest possible volume 2.2 represented as well as a smaller drop with a correspondingly smaller amount 2.3 , The placement of the droplet sizes results in the enveloping surface structure 2.4 ,
  • The radiation-curing lacquer used is adjusted with its chemical properties such that a bleeding into a flatter shape until radiation hardening of the lacquer within a period of less than 10 seconds, preferably less than 5 seconds, after the application of the lacquer by the print heads 1.5 or 1.6 does not affect the desired structure. This means that the height h of an applied drop on the workpiece 2.1 within the time period of less than 10 seconds, preferably less than 5 seconds, between application and drying by the radiation source 1.7 Less than 30%, preferably less than 10%, reduced by flowing. This is controlled by the viscosity and the tixotropy of the radiation-curing lacquer used (cf. 2 (a) and (b), height h and h ', respectively).
  • In an alternative embodiment, the decorative printing of the workpiece 1.1 in the printing press 1.3 also be part of a preceding process, which is already completed, ie, is separated in time and space from the inventive method to be used here. In this case, the method according to the invention begins with the application of the first droplets of the transparent, radiation-curing lacquer in the print head 1.5 or the row of printheads 1.5 , The remainder of the process is then identical to that described above.
  • In a further alternative embodiment, the method may also provide that the printheads 1.5 respectively. 1.6 and further printheads are movably arranged, ie either transversely to the feed direction or in the feed direction or both. In the case of this alternative embodiment, the workpiece moves step-wise, then comes to rest while the print head (s) 1.5 respectively. 1.6 move across the workpiece in the longitudinal and transverse directions and deliver the corresponding pressure with transparent, radiation-curing paint, and is then moved on. The advantages of this method are the lower investment costs, since it can be used here with a smaller number of printheads. The disadvantage is that the capacity of this alternative embodiment in produced surface per unit time is significantly lower.
  • By flowing the paint structure is meant in the present inventive method that the height of a droplet h in 2 B to the height of the passed droplet h 'in 2 B reduced.
  • In 3 is a workpiece 3.1 shown with a textured and decorative printed surface. The workpiece 3.1 has one or more coatings 3.2 and 3.3 which are optional pre-coatings or primers. With the reference number 3.4 is an enveloping surface of printed by the method according to the invention droplets, the total of a max. Height of H have. It can be a drop 3.5 with a larger volume, e.g. B. 50 pl, and a droplet 3.6 with a smaller volume, e.g. B. 80 pl. On the coating 3.3 be provided. Furthermore, a decor print image 3.7 ie the mixture of different colors, e.g. B. two, three or four colors printed in this alternative embodiment on the previously sprayed paint as the top layer. On the decor print image 3.7 is another, transparent protective layer 3.8 applied. This protective layer 3.8 can optionally be applied additionally. However, it is also possible, the inventive method without the protective layer 3.8 perform.
  • In 4 schematically an embodiment of the method according to the invention is shown. A workpiece 4.1 is in a roll coater 4.31 with paint in a paint original 4:32 pre-coated. The applied gunding is done in a dryer 4:41 , either as a hot air or circulating air dryer or with a radiation source 4:42 may be executed, completely or partially dried.
  • In an application device 4:51 be in several printheads or more printhead series, here indicated schematically 4:52 . 4:54 and 4:56 , Applied in several rows on the underlying workpiece droplets of a colored or transparent radiation-curing paint. The paint is indicated here in tank inventories 4:58 , Between the respective inkjet printheads or rows of inkjet printheads are in an alternative embodiment existing radiation sources for partial or complete drying of the respective applied paint droplets 4:53 . 4:55 and 4:57 appropriate. In an alternative embodiment, the workpiece thus treated may pass through the drying unit 4.61 to be completely dried through.
  • The following order unit, here as a roller application machine 4.71 shown, can apply a thin additional radiation-curing paint film on the thus pretreated workpiece. Between 4.71 and 4.81 In this case, a further drying, not shown in the drawing, would be used. Subsequently, the decorative image with at least two colors, ie a two-, three- or four-color printing, possibly even more colors applied. In this case, schematically is a digital printing device with four colors, with respective printheads or Druckkopfreihen 4.82 . 4.84 . 4.86 and 4.88 and in each case alternatively possible intermediate drying as radiation sources 4.83 . 4.85 and 4.87 shown. Subsequently, the thus coated and printed workpiece in a drying unit 4.91 to be fully cured. Finally, in an alternative embodiment, a wear protection or protective layer by the roller coating machine 4.92 be applied. In this case, another drying unit, not shown in the drawing, would join.
  • In yet another alternative embodiment, not shown, the method of providing very large surface capacities per unit of time with a high quality three-dimensional surface may be provided with a plurality of series of printheads, each delivering only a volume size of droplets. But to achieve a well-structured surface, the first row of printheads, z. B. 1.5 , a volume size of droplets in an exemplary embodiment is 50 pl. These are then dried in between, the workpiece moves forward, gets under the second row 1.6 printheads, which also deliver a constant volume of droplet volume, but opposite the first row 1.5 is significantly reduced. In a particularly preferred embodiment, this second droplet size is reduced to 50% or less of the volume of the first droplet size. It is also possible for a third row of printheads to deliver a further reduced, constant droplet volume size. With this alternative embodiment, the workpiece to be structured with a constant, high speed of z. B. 25 m / min. or 50 m / min. under the printheads 1.5 and 1.6 to move to the other printheads. As a result of the decreasing droplet size, both a flat structure and a flat, very sharply bent structure can be produced ("construction of a pyramid")
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102007019871 A1 [0011, 0012]

Claims (20)

  1. Method for producing a three-dimensional surface structure on a workpiece with the following steps: A) feeding a printed with a decorative image workpiece to a processing station B) spraying a transparent, radiation-curing paint through a plurality of nozzle openings on the surface of the workpiece in the form of paint droplets, wherein the individual paint droplets have a volume of 0.5-300 pl, preferably 3-80 pl, particularly preferably 10-50 pl, and the number of paint droplets per unit area and / or the volume of the paint droplets is computer controlled according to a digital template; C) curing of the transparent lacquer with radiation, preferably by means of UV radiation.
  2. A method according to claim 1, characterized in that the method is repeated with the steps B) -C) once or more times.
  3. A method according to claim 1 or 2, characterized in that the sprayed-on, transparent and radiation-curing lacquer within a time of <10 seconds, more preferably <5 seconds, until cured by a radiation source by less than 30%, more preferably less than 15 %, drops in droplet height.
  4. Method according to one of the above claims, characterized in that the maximum structure height applied by the method is 2-200 μm, preferably 10-100 μm, particularly preferably 15-60 μm.
  5. Method according to one of the above claims, characterized in that in a first run of steps B) and C) the paint droplets have a fixed, non-variable volume and at least a second repetition of steps B) and C) the paint droplets have a smaller volume have a volume of 50% of that volume in the first application according to steps B) and C).
  6. Method according to one of the preceding claims, characterized in that for each application according to step B) a number of 200-40,000 droplets per cm 2 are applied, preferably 5,000-30,000 droplets per cm 2 .
  7. Method according to one of the preceding claims, characterized in that in a first print head ( 1.5 ) or a first series of print heads ( 1.5 ) a lacquer is applied, which has a higher or lower gloss level after curing than the lacquer which is mixed with the second print head or the second row of print heads ( 1.6 ) is applied.
  8. Method according to one of the preceding claims, characterized in that the generated surface structure is adapted to the underlying decorative printed image so that certain visible in the decorative print structures and corresponding surface structures, which were produced by the inventive method by less than 3 mm, preferably by less than 1 mm, differ from each other.
  9. A method according to claim 8, characterized in that a position detection of the decorative image takes place and then takes place an adaptation of the surface structure of the decorative image.
  10. Method according to one of the preceding claims, characterized in that the surface structure generated by the method is generated from the same electronic record as the actual printed, decorative image.
  11. Method according to one of the preceding claims, characterized in that the decorative, printed image on the surface of the workpiece and the structured surface produced by the method with the steps A) -C) produced in a continuous process in succession and in a common device without interruption becomes.
  12. Method according to one of the preceding claims, characterized in that the workpiece is a plate-shaped workpiece on which the decorative image is printed or already glued in the form of a web-shaped workpiece.
  13. Method according to one of the preceding claims, characterized in that the workpiece is a wood-based panel, for. As chipboard, MDF board or HDF board is on which the decorative image is printed.
  14. Method according to one of the preceding claims, characterized in that the workpiece is a web-shaped workpiece, for. B. is a pretreated paper or a plastic or PVC film, which is already printed with the decorative image.
  15. A method for producing a decorative, three-dimensional surface structure comprising the following steps: A) feeding a workpiece to a processing station B) spraying a colored, radiation-curing lacquer through a plurality of nozzle openings on the surface of the workpiece in the form of Paint droplets, wherein the individual paint droplets have a volume of 0.5-300 pl, preferably 3-80 pl, more preferably 10-50 pl, and the number of paint droplets per unit area and / or the volume of paint droplets by computer control to a digital template he follows; C) partial or complete curing of the dyed lacquer with radiation, preferably by means of UV radiation; and D) printing a decorative image on the surface of the workpiece with at least two different colors.
  16. A method according to claim 15, characterized in that after step C) and before step D) a full-surface intermediate coating of the workpiece with a radiation-curing paint, preferably by means of a roll coater, with an application amount of 0.5-20 g / m 2 , preferably 1- 10 g / m 2 takes place.
  17. A method according to claim 15 or 16, characterized in that the steps B) and C) are repeated at least twice, wherein in the first repetition of a uniform volume size of paint droplets is sprayed, and in the second repetition of a uniform, but smaller volume size of paint droplets is sprayed, for example, less than 50% of the volume of the paint droplets of the first application step.
  18. Device for producing a three-dimensional surface structure on a workpiece with a feed device of the workpiece to a first digital print head ( 1.5 ) or a first row of a plurality of printheads ( 1.5 ), by which a transparent or colored, radiation-curing lacquer can be applied to the surface of the workpiece and a radiation source arranged behind it (US Pat. 1.7 ).
  19. Apparatus according to claim 18, characterized in that a one to multiple repetition of the structure with a respective further individual print head ( 1.6 ) or another series of print heads ( 1.6 ) and a radiation source arranged behind it.
  20. Device according to one of the preceding claims 18 or 19, characterized in that at least two print heads are used, both of which apply a transparent, radiation-curing paint on the workpiece, wherein at least one of the print heads or a series of printheads after curing a shiny, transparent lacquer while the other printheads or printheads used apply a transparent, matte varnish after curing to the surface of the workpiece.
DE102009044802.0A 2009-11-30 2009-12-07 Method and device for producing a three-dimensional surface structure on a workpiece Active DE102009044802B4 (en)

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DE102009044802.0A DE102009044802B4 (en) 2009-11-30 2009-12-07 Method and device for producing a three-dimensional surface structure on a workpiece
EP10771793.6A EP2507063B1 (en) 2009-11-30 2010-11-04 Method for generating a three-dimensional surface structure on a work piece
PL10771793T PL2507063T3 (en) 2009-11-30 2010-11-04 Method for generating a three-dimensional surface structure on a work piece
PCT/EP2010/066827 WO2011064075A2 (en) 2009-11-30 2010-11-04 Method and device for generating a three dimensional surface structure on a work piece
ES10771793.6T ES2525744T3 (en) 2009-11-30 2010-11-04 Procedure for the generation of a three-dimensional surface structure on a work piece

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EP2857221A1 (en) 2013-10-07 2015-04-08 Flooring Technologies Ltd. Panel with super-matt surface
EP2873535A1 (en) 2013-11-15 2015-05-20 Flooring Technologies Ltd. Workpieces with structured decorative surface
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EP3056350A1 (en) * 2015-02-16 2016-08-17 Wemhöner Surface Technologies GmbH & Co. KG Method for creating a surface pattern on a surface of a workpiece and workpiece obtained thereby
EP3109056A1 (en) 2015-06-25 2016-12-28 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a structure on a surface
EP2656923A3 (en) * 2012-04-27 2017-03-08 Hörmann KG Brockhagen Method and device for manufacturing a coated building component
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DE102017113036A1 (en) 2017-06-13 2018-12-13 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative workpiece and workpiece
EP3415317A1 (en) 2017-06-13 2018-12-19 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative surface
EP3415319A1 (en) * 2017-06-13 2018-12-19 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative surface
EP3415318A1 (en) 2017-06-13 2018-12-19 Hymmen GmbH Maschinen- und Anlagenbau Workpiece and method and device for forming a decorative workpiece
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WO2013156196A1 (en) 2012-04-20 2013-10-24 Fritz Egger Gmbh & Co. Og Method and apparatus for producing a structured varnish surface
DE102012103491A1 (en) 2012-04-20 2013-10-24 Fritz Egger Gmbh & Co. Og Method and device for producing a structured lacquer surface
EP2656923A3 (en) * 2012-04-27 2017-03-08 Hörmann KG Brockhagen Method and device for manufacturing a coated building component
DE102012111825A1 (en) * 2012-12-05 2014-06-05 SÜDDEKOR GmbH Surface material for floors and furniture and process for its production
DE102012111825B4 (en) * 2012-12-05 2018-01-04 SÜDDEKOR GmbH Surface material for floors and furniture and process for its production
EP2857221A1 (en) 2013-10-07 2015-04-08 Flooring Technologies Ltd. Panel with super-matt surface
EP2873535A1 (en) 2013-11-15 2015-05-20 Flooring Technologies Ltd. Workpieces with structured decorative surface
EP2913199A1 (en) * 2014-02-28 2015-09-02 Flooring Technologies Ltd. Method and device for manufacturing a decorative panel and decorative panel
DE102015102180A1 (en) * 2015-02-16 2016-08-18 Wemhöner Surface Technologies GmbH & Co. KG Method for producing a surface structure on a surface of a workpiece and workpiece produced therewith
EP3056350A1 (en) * 2015-02-16 2016-08-17 Wemhöner Surface Technologies GmbH & Co. KG Method for creating a surface pattern on a surface of a workpiece and workpiece obtained thereby
DE102015110236A1 (en) 2015-06-25 2016-12-29 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a structure on a surface
EP3109056A1 (en) 2015-06-25 2016-12-28 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a structure on a surface
EP3109056B1 (en) 2015-06-25 2018-02-14 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a structure on a surface
DE202016008502U1 (en) 2015-06-25 2018-03-08 Hymmen GmbH Maschinen- und Anlagenbau Device for producing a structure on a surface
DE102017107312A1 (en) * 2017-04-05 2018-10-11 Océ Holding B.V. Method for printing a recording medium by means of liquid-based dye or pigment transport, use of a surface protection in the liquid-based printing of a recording medium to increase the reproducible color space and printed record carrier
US10500885B2 (en) 2017-04-05 2019-12-10 Océ Holding B.V. Method for printing to a recording medium with a fluid-based colorant transport or pigment transport and a surface protection in fluid-based printing to increase the presentable color space
DE102017113036A1 (en) 2017-06-13 2018-12-13 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative workpiece and workpiece
EP3415317A1 (en) 2017-06-13 2018-12-19 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative surface
EP3415319A1 (en) * 2017-06-13 2018-12-19 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative surface
EP3415318A1 (en) 2017-06-13 2018-12-19 Hymmen GmbH Maschinen- und Anlagenbau Workpiece and method and device for forming a decorative workpiece
DE102017113035A1 (en) 2017-06-13 2018-12-13 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative surface
WO2018229169A1 (en) 2017-06-13 2018-12-20 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative workpiece and workpiece
WO2018229167A1 (en) 2017-06-13 2018-12-20 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative surface
DE102017113036B4 (en) * 2017-06-13 2019-10-31 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative workpiece and workpiece
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WO2018229164A1 (en) * 2017-06-13 2018-12-20 Hymmen GmbH Maschinen- und Anlagenbau Method and device for producing a decorative surface
WO2019175817A3 (en) * 2018-03-14 2019-11-07 Unilin, Bvba Methods for manufacturing decorative panels and panels obtainable thereby

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EP2507063B1 (en) 2014-09-10
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DE102009044802B4 (en) 2017-11-23
PL2507063T3 (en) 2015-03-31

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