EP2319630A1 - Method for multi-colour permanent varnishing of a product - Google Patents

Abstract

The process involves defining a region (4) and two different locations (5, 6) within the region on an unpainted surface (2) of a substrate (1). A release layer (7) is provided at the region. A medium e.g. additive, is added to the release layer. The release layer is exposed to electromagnetic radiation e.g. infrared radiation, at one of the locations. A base layer of paint (3) is provided at the location. The paint layer is permanently fixed at the location. The paint layer is partly removed at the other location. The additive is an absorber for electromagnetic radiation, initiator, wetting agent, dewetting agent, thickening agent, dispersion aid, solution promoter or catalyst. The radiation is selected from a group consisting of infrared, near infrared and UV radiations.

Description

The present invention relates to a process for multicolor, permanent coating of a product according to one of claims 1 and 2.

From the field of industrial painting such. in automobile manufacturing or "white goods", beverage vending machines, metal facades, etc., it is known to paint metal sheets or plastic surfaces, i. be permanently or permanently provided with a paint to protect the parts against both corrosion and permanent damage, i. over years to protect, as well as to make visually appealing. It is also already known to provide such parts not only with a single paint, but with two different colored paints in two steps. For this purpose, the first applied paint is partially masked before the second, different colored paint. Such a method is labor-intensive, time-consuming and cost-intensive.

The DE 10 2008 053 178 A1 describes a coating device for painting motor vehicle body components, in which a print head with at least one nozzle, for example a bubble jet or a piezo print head for applying the paint is used. CMYK basic colors and special colors can be processed and decorative paints can be produced as well. The printhead may have a matrix of nozzles and rotate during printing. It should be so-called overspray, ie sprayed but not applied paint, reduced or avoided and therefore to dispense with a separate leaching of the overspray from the Lackierkabinenluft. The device has one or more color changer and a plurality of coating agent supply lines, so that some cleaning must be suspected.

In addition, it is already known from the distant field of the graphic arts industry, especially in offset printing, to image and temporarily or reversibly color print forms in order to transfer the applied printing ink from the printing form to a substrate (eg paper or cardboard). After printing, the printing plates can be completely cleaned of paint and, if necessary, replaced. In most cases, the substrates are printed in multiple colors, ie several printing plates are used, which are colored differently become. In the course of the imaging, the printing forms are structured correspondingly to the image data to be printed, ie ink-accepting and ink-repelling areas are created on the surface - for example with the aid of laser radiation. One type of structuring comprises the structured or spatially resolved nanoscopic covering of the printing form with amphiphilic molecules, for example in the ink-accepting areas.

Moreover, it is already known from the graphic arts industry to dry or cure the printing inks thus transferred to the substrate, it being possible to use UV or IR radiation (also as laser radiation)

Against this background, it is an object of the present invention to provide a comparison with the prior art improved method, which makes it possible to paint products such as body parts multi-colored and permanent, the cost of color changes is low and low cleaning costs entails.

This object is achieved by methods having the features of claim 1 and 2. Advantageous developments of the invention will become apparent from the accompanying dependent claims and from the description and the accompanying drawings.

A method of multicolor permanent painting of a product according to the present invention is a method wherein: A) defines on the surface of the product a first region, a first location within the first region and a second location within the first region different from the first location become; B1, B2) the surface is provided, at least in the first region, with a first separation layer and the first separation layer is acted on at the first location, but not at the second location, with electromagnetic radiation; C1) the surface is provided with a first lacquer layer at least at the first location; and D) the first lacquer layer is fixed at least at the first location.

An alternative method of multicolor permanent painting of a product according to the present invention is a method wherein: A) on the surface of the product, a first region, a first location within the first region, and a second location within the first region, other than the first location To be defined; B1) the surface at least on second location, but not provided at the first location using an applicator with a first separation layer; C1) the surface is provided with a first lacquer layer at least at the first location; and D) the first lacquer layer is fixed at least at the first location.

In order to better identify the claims and the corresponding figures and parts thereof, the numbering of the method steps in the claims and the reference numbers used in the figures for process steps have been adapted to each other.

definitions

I) The term "permanent coating" in this application - in contrast to only temporary inking of printing plates for the purpose of subsequent color transfer - the permanent coating or application of a paint or a color understood, the cured paint or the paint smudge is and thus the substrate is not damage-free or non-destructive removable again, that is, in other words, the removal inevitably leads to damage or destruction of the paint / color and / or even the substrate.

II) The term " product " in this application is understood to mean a substrate having at least one solid surface which is capable of carrying a permanent coating. The substrate or the materials of the substrate may be at least partially coated, finished, primed, filled or painted.

1. 1. Metallbleche
   • 1.1. z.B. verzinkt;
   • 1.2. z.B. im wesentlichen aus Edelstahl, Aluminium oder Magnesium;
2. 2. Metall-Verbundmaterialien
   • 2.1. z.B. Aluminium-Stahl-Komposit, Magnesium-Aluminium-Stahl-Komposit oder "Bondal" der Firma ThyssenKrupp;
3. 3. Faserverstärkte Kunststoffe
   • 3.1. z.B. Glasfaserverstärkte Kunststoffe (GFK);
   • 3.2. z.B. Carbonfaserverstärkte Kunststoffe (CFK);
   • 3.3. z.B. Naturfaserverstärkte Kunststoffe (NFK) wie z.B. mit Kenaf verstärkte Polylactide (PLA);
4. 4. Wood-Plastic-Composite (WPC), d.h. Holz-Kunststoff-Verbundwerkstoffe oder Holz-Polymer-Werkstoffe;
5. 5. Kunststoffe (PE, HDPE, PVC, PS);
6. 6. Glas.

Suitable substrates (list of embodiments):

1. 1. metal sheets
   • 1.1. eg galvanized;
   • 1.2. eg essentially of stainless steel, aluminum or magnesium;
2. 2. Metal composites
   • 2.1. eg aluminum-steel composite, magnesium-aluminum-steel composite or "Bondal" from ThyssenKrupp;
3. 3. Fiber-reinforced plastics
   • 3.1. eg glass fiber reinforced plastics (GRP);
   • 3.2. eg carbon fiber reinforced plastics (CFRP);
   • 3.3. eg natural fiber reinforced plastics (NFK) such as kenaf reinforced polylactides (PLA);
4. 4. Wood-plastic composite (WPC), ie wood-plastic composites or wood-polymer materials;
5. 5. plastics (PE, HDPE, PVC, PS);
6. 6. Glass.

III) The term "separating layer" in this application is understood to mean one of the layers or fillings listed below under the numbers 1 to 6. The selection of a particular release layer can be made depending on whether the paint to be applied is solvent-based or water-based and whether the paint to be applied should coat the release layer well, poorly or substantially not at all.

1. 1. Eine Wachs- oder Ölschicht, d.h. eine mikroskopische Schicht (Schichtdicke bevorzugt geringer als etwa 100 Mikrometer, weiter bevorzugt geringer als etwa 10 Mikrometer) zumindest umfassend: Wachs oder Öl, bevorzugt ein PTFE (Teflon) oder Silikon enthaltendes Wachs und/oder bevorzugt ein Wachs mit geringem Fließverhalten. Geeignete Substanzen/Mittel (Liste von Ausführungsbeispiele):
   • 1.1. Wasserbasierte Außenhautkonservierung W550 sowie lösemittelbasiertes Konservierungswachs Apex 106 II der Firma Pfinder in Böblingen (http://www.pfinder.de/);
   • 1.2. Hohlraumversiegler "Fertan HT" oder "Fertan NT10" der Firma Fertan in Saarbrücken (http://www.fertan.de);
   • 1.3. Teflonhaltiges Sprühwachs "Fin Grease" sowie die Produkte "Fin Film WB" oder "Wax-Spray" der Firma Interflon in Nettetal (www.interflon.net); oder Teflonfett der Firma Gescha in Nagold;
   • 1.4. Wässrige Mikrowachs-Suspension, z.B. "Antiparoli Temporär" der Firma Coverax-M-Chemie in Altdorf (www.coverax.de); oder
   • 1.5. Handelsübliche Autolackpolituren, z.B. "Sonax Xtreme Wax 1 Full Protect" der Firma Sonax in Neudorf (www.sonax.de) oder "Nigrin Nanotec Hartwachspolitur" der Firma Inter-Union Technohandel in Landau (www.nigrin.de).
2. 2. Eine Molekülbelegung, d.h. eine nanoskopische Schicht (Schichtdicke bevorzugt geringer als etwa 100 Nanometer, weiter bevorzugt geringer als etwa 10 Nanometer) von Molekülen, bevorzugt eine Monolage. Geeignete Substanzen/Mittel (Liste von Ausführungsbeispiele):
   • 2.1. Semi-Perfluoro-Phosphonsäure;
   • 2.2. Polyethersiloxan, z.B. "Evonik Tego Glide 410" der Firma Evonik Tego Chemie (http://evonik.tego.de/);
   • 2.3. Fluoriertes oligomeres Siloxan in organischem Lösemittel, z.B. "Graffitischutz HM 050" der Firma Coverax-M-Chemie in Altdorf (www.coverax.de); oder
   • 2.4. Wässrige Nanodispersion, z.B. "Nanotol" der Firma CeNano in Dorfen (www.cenano.de).
3. 3. Ein Sol-Gel-System bzw. eine durch einen Sol-Gel-Prozess erzeugte Schicht, bevorzugt ein Sol-Gel-System, welches nach wenigen Minuten (Dauer bevorzugt geringer als etwa 10 Minuten, weiter bevorzugt geringer als etwa 5 Minuten) grifffest ist und/oder welches (entgegen sonst zumeist üblicher Anforderungen an Sol-Gel-Systeme) eine nur geringe Verschleißbeständigkeit aufweist. Geeignete Substanzen/Mittel (Liste von Ausführungsbeispiele):
   • 3.1. Einkomponenten- und Mehrkomponentensysteme; oder
   • 3.2. lösemittelbasierte und wasserbasierte Systeme, bevorzugt polysiloxan-, vinyl- oder fluorhaltige Produkte, z.B. "H5044" der Firma FEW Chemicals in Bitterfeld-Wolfen (www.few.de).
4. 4. Eine der folgenden Schichten:
   • 4.1. Eine Polymer- oder eine Harzschicht, bevorzugt eine wässrige Suspension mit VinylHarz, z.B. "Flüssige Abdeckfolie" der Firma 3M Deutschland in Neuss (http://solutions.3mdeutschland.de;
   • 4.2. Wasserbasierte Ofenbeschichtungen, z.B. "Tacky Booth Coating 10W", "Tacky Booth Coating 10HT" oder das polymerbasierte Produkt "Oven Coating 1493" der Firma General Chemicals in Brighton MI, USA (http://www.paintboothchemicals.com);
   • 4.3. Wasserverdünnbarer Abziehlack "Peel White" oder "Peel Clear" der Firma Gescha in Nagold; oder
   • 4.4. Lösemittelfreier Staubbindelack "Staubfix SBL 6830" der Firma Briel in Giengen.
5. 5. Ein Mehrschichtsystem oder eine Mehrfachbelegung, bevorzugt unter Verwendung von wenigstens einer Schicht und/oder Belegung gemäß der vorhergehenden Ziffern 1 bis 4. Eine Mehrfachbelegung kann z.B. eine erste Molekülbelegung, welche gut am Substrat anbindet, und eine zweite Molekülbelegung, welche gut an der ersten Molekülbelegung anbindet und die gewünschte Oberflächeneigenschaft (bevorzugt ausreichende abweisende Eigenschaft bzw. Hydrophobie gegenüber nachfolgend aufgetragenen Substanzen/Mittel) aufweist oder erzeugt, umfassen. Geeignete Substanzen/Mittel (Liste von Ausführungsbeispiele):
   • 5.1. Die erste Schicht/Belegung kann z.B. ein Polyethylenimid sein oder die "Flüssige Abdeckfolie" der Firma 3M-Deutschland in Neuss; und
   • 5.2. Die zweite Schicht/Belegung kann eine Carbonsäure, bevorzugt eine Stearinsäure, oder eine teil- oder perfluorierte Carbonsäure, bevorzugt eine Perfluorooktansäure sein oder das lösemittelbasierte Konservierungswachs "Apex 106 II" der Firma Pfinder in Böblingen.
6. 6. Die Trennschichten der vorhergehenden Ziffern 1 bis 5 können zudem Additive enthalten, um ihre Funktion zu verbessern. Geeignete Substanzen/Mittel (Liste von Ausführungsbeispiele):
   • 6.1. Pigmente oder Farbstoffe um Laserstrahlung zu absorbieren (z.B. Acetylenflammenruß oder andere Rußpräparate wie "Luconyl NG Schwarz 0066" der BASF AG, Immoniumsalze, Pyrrelene oder Cyanine wie "52058" oder "50837" der Firma FEW Chemicals)
   • 6.2. Substratnetzadditive um die Benetzung des Trennmittels auf dem Substrat zu erhöhen (z.B. siloxanhaltiges "Evonik Tego Wet 240" oder "Evonik Twin 4100")
   • 6.3. Geliermittel, um ein fließen bei Erhitzung zu verhindern - z.B. "Tixogel" ® (www.Rockwoodadditives.com)

According to the invention, a release agent is used which temporarily creates a release layer on the substrate. The release layer may be an ink-repellent intermediate layer. However, it is at least not solved or damaged by a subsequently applied lacquer layer. This release layer should be as stable and stable as possible until it reaches common paint drying temperatures of about 60-200 ° C. The release layer can be applied in a planar manner and then locally removed or changed (for example by preferably laser-generated IR radiation or UV radiation). Alternatively, the release layer can be applied locally.

1. 1. A wax or oil layer, ie a microscopic layer (layer thickness preferably less than about 100 microns, more preferably less than about 10 microns) at least comprising: wax or oil, preferably a PTFE (Teflon) or silicone-containing wax and / or preferred a low flow wax. Suitable substances / means (list of embodiments):
   • 1.1. Water-based outer skin preservation W550 and solvent-based preservative wax Apex 106 II from Pfinder in Böblingen (http://www.pfinder.de/);
   • 1.2. Cavity sealer "Fertan HT" or "Fertan NT10" from Fertan in Saarbrücken (http://www.fertan.de);
   • 1.3. Teflon-containing "Fin Grease" spray wax and the "Fin Film WB" or "Wax-Spray" products from Interflon in Nettetal ( www.interflon.net ); or Teflon grease from Gescha in Nagold;
   • 1.4. Aqueous microwax suspension, eg "Antiparoli Temporär" from Coverax-M-Chemie in Altdorf (www.coverax.de); or
   • 1.5. Commercially available car paint polishes, eg "Sonax Xtreme Wax 1 Full Protect" of the company Sonax in Neudorf (www.sonax.de) or "Nigrin Nanotec hard wax polish" of the company Inter-Union Technohandel in Landau (www.nigrin.de).
2. 2. A molecule occupancy, ie a nanoscopic layer (layer thickness preferably less than about 100 nanometers, more preferably less than about 10 nanometers) of molecules, preferably a monolayer. Suitable substances / means (list of embodiments):
   • 2.1. Semi-perfluoro phosphonic;
   • 2.2. Polyethersiloxane, eg "Evonik Tego Glide 410" from Evonik Tego Chemie (http://evonik.tego.de/);
   • 2.3. Fluorinated oligomeric siloxane in organic solvent, eg "Graffitischutz HM 050" from Coverax-M-Chemie in Altdorf (www.coverax.de); or
   • 2.4. Aqueous nanodispersion, eg "Nanotol" from CeNano in Dorfen (www.cenano.de).
3. 3. A sol-gel system or a layer produced by a sol-gel process, preferably a sol-gel system, which after a few minutes (duration preferably less than about 10 minutes, more preferably less than about 5 minutes) is grip-proof and / or (contrary to otherwise usually customary requirements for sol-gel systems) has only a low wear resistance. Suitable substances / means (list of embodiments):
   • 3.1. One-component and multi-component systems; or
   • 3.2. solvent-based and water-based systems, preferably polysiloxane-, vinyl- or fluorine-containing products, eg "H5044" from FEW Chemicals in Bitterfeld-Wolfen (www.few.de).
4. 4. One of the following layers:
   • 4.1. A polymer or a resin layer, preferably an aqueous suspension with vinyl resin, eg "liquid cover film" from 3M Germany in Neuss (http://solutions.3mdeutschland.de;
   • 4.2. Water-based oven coatings, eg "Tacky Booth Coating 10W", "Tacky Booth Coating 10HT" or the polymer-based product "Oven Coating 1493" from General Chemicals in Brighton MI, USA ( http://www.paintboothchemicals.com );
   • 4.3. Water-thinnable peel-off "Peel White" or "Peel Clear" from Gescha in Nagold; or
   • 4.4. Solvent-free dust bag "Staubfix SBL 6830" from Briel in Giengen.
5. 5. A multilayer system or a multiple occupancy, preferably using at least one layer and / or occupancy according to the preceding paragraphs 1 to 4. A multiple assignment can, for example, a first molecule assignment, which binds well to the substrate, and a second molecular assignment, which fits well on the binds the first molecule assignment and the desired surface property (preferably sufficient repellent property or hydrophobicity to subsequently applied substances / agents) comprises or generated include. Suitable substances / means (list of embodiments):
   • 5.1. The first layer / coating can be, for example, a polyethyleneimide or the "liquid cover film" from 3M-Germany in Neuss; and
   • 5.2. The second layer / coating may be a carboxylic acid, preferably a stearic acid, or a partially or perfluorinated carboxylic acid, preferably a perfluorooctanoic acid, or the solvent-based preservative wax "Apex 106 II" from Pfinder in Böblingen.
6. 6. The release liners of the preceding paragraphs 1 to 5 may also contain additives to improve their function. Suitable substances / means (list of embodiments):
   • 6.1. Pigments or dyes for absorbing laser radiation (eg acetylene flame black or other carbon black preparations such as "Luconyl NG Black 0066" from BASF AG, immonium salts, pyrrelens or cyanines such as "52058" or "50837" from FEW Chemicals)
   • 6.2. Substrate net additives to increase the wetting of the release agent on the substrate (eg siloxane-containing "Evonik Tego Wet 240" or "Evonik Twin 4100")
   • 6.3. Gelling agent to prevent flow when heated - eg "Tixogel" ® (www.Rockwoodadditives.com)

IV) The term "application device " in this application means a device which allows the surface or local, ie spatially resolved application of a release layer, preferably a jet nozzle or droplet nozzle. Accordingly, a suitable application device must allow the substances / agents necessary for the production of the separation layer to be applied only at certain points of the product, the image sites, while the complementary non-image sites remain substantially free of these substances / agents.

The method according to the invention preferably has a high degree of automation, which can be achieved by means of controllable and / or movable applicators, e.g. by those mounted on movable robot arms.

1. 1. Nebel erzeugende Vorrichtungen, bevorzugt Rotationszerstäuber, pneumatische Zerstäuber oder Druckluftzerstäuber mit oder ohne elektrostatischer Aufladung sowie mit oder ohne Potentialtrennung;
2. 2. Strahl- oder Tröpfchen erzeugende Vorrichtungen, bevorzugt kontinuierlich arbeitende Strahldüsen oder unterbrochen arbeitende Tröpfchendüsen, z.B. auf Basis von so genannten Ink-Jet-Systemen oder ValveJet-Systemen:
   • 2.1. "Continous Ink Jet"-Systeme (CIJ), z.B. der Firma Inkdustry in Neubrunn;
   • 2.2. "Drop On Demand"- (DOD), insbesondere "BubbleJet"- oder "PiezoJet"-Systeme, z.B. der Firmen Xaar (www.xaar.com), KonicaMinolta (www.konicaminolta.com/inkjethead) oder Fuji (http://www.dimatix.com);
   • 2.3. Airbrush-Systeme; und
   • 2.4. Tropfendosiersysteme, Sprüh- oder Fadendosierungssysteme sowie Hotmelt-Systeme, z.B. der Firmen Robatech (www.robatech.de) und Delo Industrieklebstoffe (www.delo.de) oder auf Basis des "Rapid Reaction Valve" der Firma GSR Ventiltechnik (www.ventiltechnik.de).

Suitable applicators (list of embodiments):

1. 1. mist-generating devices, preferably rotary atomizers, pneumatic atomizers or compressed air atomizers with or without electrostatic charging and with or without electrical isolation;
2. 2. Jet or droplet-producing devices, preferably continuously operating jet nozzles or interrupted droplet nozzles, eg based on so-called ink-jet systems or ValveJet systems:
   • 2.1. "Continuous Ink Jet" systems (CIJ), for example the company Inkdustry in Neubrunn;
   • 2.2. "Drop On Demand" (DOD), in particular "BubbleJet" or "PiezoJet" systems, eg the companies Xaar (www.xaar.com), KonicaMinolta (www.konicaminolta.com/inkjethead) or Fuji (http: // /www.dimatix.com);
   • 2.3. Airbrush systems; and
   • 2.4. Drip dosing systems, spray or thread dosing systems and hotmelt systems, eg Robatech (www.robatech.de) and Delo Industrieklebstoffe (www.delo.de) or based on the "Rapid Reaction Valve" of GSR Ventiltechnik (www.ventiltechnik. de).

VI) In this application, the term "fixing" is understood to mean a treatment of a layer, preferably a lacquer layer, carried out as a method step, whereby the layer either permanently adheres to a surface or sufficiently adheres to a surface such that the layer remains at least one time subsequent step adheres to the surface, which ensures that the layer permanently adheres to the surface. The fixing can be done by heating, drying, curing and / or baking. For example, a lacquer layer can be cured by heating at least partially so that the layer adheres to a surface sufficiently long and firmly until it is permanently connected to the surface in a time-subsequent baking process.

VII) The term "lacquer" in this application is understood to mean both essentially colorless, translucent, translucent or transparent lacquer (eg clear lacquer) and also colored or opaque lacquer (eg top lacquer).

1. 1. wasserbasierte oder lösemittelbasierte Systeme;
2. 2. "High-Solid"-Systeme mit geringem Lösemittelanteil;
3. 3. Einkomponenten- oder Mehrkomponenten-Systeme;
4. 4. Pulverlacke;
5. 5. Hotmelt-Systeme;
6. 6. oxidativ trocknende Systeme (Vernetzung unter Mitwirkung von Luftsauerstoff);
7. 7. physikalisch trocknende Systeme (Verdampfung);
8. 8. strahlenhärtende Systeme (Elektronenstrahlhärtung bzw. UV-härtende Systeme unter Mitwirkung von Initiatoren).

Suitable paints (list of embodiments):

1. 1. water-based or solvent-based systems;
2. 2. "high-solid" systems with low solvent content;
3. 3. one-component or multi-component systems;
4. 4. powder coatings;
5. 5. hotmelt systems;
6. 6. oxidatively drying systems (crosslinking with the participation of atmospheric oxygen);
7. 7. physically drying systems (evaporation);
8. 8. Radiation-curing systems (electron-beam curing or UV-curing systems with the participation of initiators).

VIII) The term "high-resolution" in this application is understood to mean a resolution of at least 10 dpi (corresponding to a dot size / edge sharpness of about 2.54 mm). For many applications, such as multi-colored painted vehicle body panels, a resolution of about 100 dpi (corresponding to a point size / edge sharpness of about 0.254 mm) is sufficient.

IX) In this application, the term "location" is understood to mean not only a (at least a few square centimeters) surface portion of the surface of the product, but also a single (only sub-square millimeter) grid point or a single grid line (generally a grid element).

Carrying out the method according to the invention advantageously makes it possible to paint products multicolored and permanently, whereby the surface is structured by means of a release agent: areas of the surface with release agent allow the removal of applied paint, while places without release agent allow such removal, at least after a fixation of the paint, do not allow. Simple example: If a first place to be painted red and a second place not, so the second place release agent is provided before both places are painted red and the second place the red paint is possibly removed together with the release agent again.

The structuring can be carried out according to claim 1 such that the release agent is substantially unstructured, i. without spatial resolution, is applied (in the above, simple example: in both places) and structured is removed again (in the above, simple example: only in the first place).

Both methods are designed so that they allow the subsequent removal of the excess applied paint. In addition, both methods are designed so that they can be carried out several times in succession and thus enable the multicolor coating. In the above, simple example: After painting with red paint a third place should be painted blue and a fourth place not. It is provided on the fourth location release agent before both places are painted blue and the fourth place the blue paint is removed. If the blue paint does not cover the red, then the fourth place will include the first place.

When using process-identical or at least similar paints can be used in an advantageous manner with only one or a few but also similar release agent (s), so that the cost of multicolor painting is kept low. Simple example: If all varnishes of different colors can be processed with the same release agent, the application device for the release agent does not need to be cleaned during color changes.

The application of the lacquers always takes place essentially unstructured, so that no expensive and cleaning-intensive application devices, e.g. Ink jet systems need to be provided. Instead, simpler spray mist generating nozzles can be used. Accordingly, the appearance of painted surfaces corresponds to today's coating processes with similar application (for example rotary atomizers) and process control even with metallic paints.

The methods according to the invention can each be used as an integrated process step during the otherwise unchanged production or coating / priming of the product, eg a vehicle body or a part thereof. Alternatively, the methods may each be used as a subsequent finishing step for an already painted or Primed product can be applied and provide the product with additional colors and thereby enhance at least visually.

According to the invention, the products can be multicolored, i. with at least two different colored paints, and permanently painted. It is also possible, besides simple two-color coatings, such as e.g. Strips of a color on a different colored surface, also e.g. rasterized CMYK images (with the four colors: C = cyan, M = magenta, Y = yellow, K = black) on the products. In concrete terms, according to the invention not only so-called rally strips, sharp-edged lettering and pictograms can be produced on body parts, but also e.g. also high-resolution and complex motifs.

By generating images and areas of halftone dots (printing principle), a comparatively large color space can be imaged from primary color tones. The color space can be spanned by additive color mixing (halftone dots next to each other, opaque colors) and by subtractive color mixing (halftone dots overlap, translucent colors) as well as by both color mixing methods in combination.

A refinement of the method according to the invention which is advantageous and therefore preferred for multicolor coating can be characterized in that at the beginning of the process a surface having a base lacquer layer is provided at least within the first region, the base lacquer layer and the first lacquer layer being different in color.

A refinement of the method according to the invention which is advantageous and therefore preferred for permanent coating can be distinguished by the fact that at the end of the process a permanent fixation, e.g. by electromagnetic irradiation, the first lacquer layer takes place.

A refinement of the method according to the invention which is advantageous and therefore preferred for enabling the unstructured application of paint can be characterized in that C2) provides the surface with a first coating layer at least at the second location becomes; and E1) the first lacquer layer at the second location is at least partially removed, for example by cleaning.

A refinement of the method according to the invention which is advantageous and therefore preferred for multicolor coating can be distinguished by the fact that E2) at least partially removes the first separating layer, together with the first lacquer layer or separately, at the second location. The release-free, lacquered surface of the product is then ready for further painting.

A refinement of the method according to the invention which is advantageous and therefore preferred for multicolor painting in the case of a repeated coating process can be characterized in that F) a third location within a second area and a fourth location within the second area different from the third location are defined on the surface; G1, G2) the surface is provided with a second separation layer at least in the second region and the second separation layer is acted on at the third location with electromagnetic radiation; H1, H2) the surface is provided with a second lacquer layer at least at the third and the fourth location, the first lacquer layer and the second lacquer layer being different in color; I) the second lacquer layer is fixed at least at the third location; and J1, J2), the second lacquer layer and the second separating layer - together with the second lacquer layer or separately - are at least partially removed at the fourth location.

A refinement of the method according to the invention that is also advantageous for multicolored painting in a repeated coating process and therefore preferred can be distinguished by F) defining a third location within the second area on the surface and a fourth location within the second area being different from the third location ; G1) the surface is provided with a second separating layer at least at the fourth location using an applicator device; H1, H2) the surface is provided with a second lacquer layer at least at the third location and at the fourth location, wherein the first lacquer layer and the second lacquer layer are different in color, i) the second lacquer layer is fixed at least at the third location; and J1, J2), the second lacquer layer and the second separating layer - together with the second lacquer layer or separately - are at least partially removed at the fourth location.

A likewise advantageous for multicolor painting and therefore preferred embodiment of the method according to the invention may be characterized in that K) the process steps f to j for applying at least one further, again differently colored lacquer layer at a further, again different location at least once repeated accordingly.

A likewise advantageous for the multicolor coating and therefore preferred embodiment of the method according to the invention may be characterized in that the third place is equal to the first place and the second coat of paint comprises a colorless, translucent, translucent or transparent lacquer, or the third place different from the first Place is and the second coat of paint includes a colored or opaque paint.

A further advantageous and therefore preferred development of the method according to the invention can be distinguished by the fact that, after method step B 1 or B2 and before method step C1, an intermediate step B3 takes place from the listing of the following intermediate treatments: exposure to electromagnetic radiation; Exposure to heat; Pressurization with compressed air; Exposure to a plasma discharge or corona discharge; Loading, in particular painting over with bird feathers, in particular dust-catching emu feathers; and exposure to liquid, in particular water.

A further advantageous and therefore preferred development of the method according to the invention can be characterized in that at least one medium from the list of the following additives is added to the medium of the separating layer: absorbers for electromagnetic radiation, in particular for infrared, near infrared or ultraviolet; Initiator; Wetting agents; Entnetzungsmittel; Thickener; dispersing aids; Solubilizing agents; and catalyst.

In the context of the invention is also a machine - for example, a stationary or mobile deployable painting station for motor vehicles or their body parts - to see which is suitable for carrying out a method according to the invention, for example by providing the devices proposed for carrying out the respective method steps in this application, such as application device, radiation source, device for application, device for the coating application, fixing device, cleaning device, in particular a machine whose devices are arranged in this way and / or be controlled so that the sequence according to the invention of the method steps is passed through. Preferably, the machine comprises one or more 6-axis robots each having a replaceable head for at least some of the above-mentioned devices.

• Verfahren zum mehrfarbigen, permanenten Lackieren eines Produkts, z.B. einer Fahrzeug-Karosserie, eines Teils davon oder eines Metallbandes, wobei
  • A) auf der Oberfläche des Produkts ein erster Bereich, ein erster Ort innerhalb des ersten Bereichs und ein vom ersten Ort verschiedener, zweiter Ort innerhalb des ersten Bereichs definiert werden,
  • C1) die Oberfläche wenigstens im ersten Bereich mit einer ersten Lackschicht, bevorzugt einem wässrigen Lack oder einem Einbrennlack, versehen wird und die erste Lackschicht am ersten Ort, nicht jedoch am zweiten Ort mit elektro-magnetischer Strahlung, bevorzugt mit Ultraviolett-Strahlung, beaufschlagt wird,
  • E1) die erste Lackschicht wenigstens am zweiten Ort entfernt wird,
  • H1) die Oberfläche wenigstens am zweiten Ort mit einer zweiten Lackschicht versehen wird.

Three alternative methods according to the invention are shown below:

• A method for multicolor, permanent painting of a product, such as a vehicle body, a part thereof or a metal strip, wherein
  • A) defining on the surface of the product a first area, a first location within the first area, and a second location other than the first location within the first area,
  • C1), the surface is provided, at least in the first region, with a first lacquer layer, preferably an aqueous lacquer or a stoving lacquer, and the first lacquer layer is exposed to electromagnetic radiation, preferably ultraviolet radiation, at the first location but not at the second location .
  • E1) the first lacquer layer is removed at least at the second location,
  • H1) the surface is provided with a second lacquer layer at least at the second location.

A method of multicolor, permanent painting of a product, wherein A) on the surface of the product, a first area, a first location within the first area, and a second location other than the first location are defined within the first area,

B1, B2) the surface is provided, at least in the first region, with a first adhesion promoter for a first lacquer layer and the first adhesion promoter is acted on at the second location, but not at the first location with electromagnetic radiation,

C1) the surface is provided with a first lacquer layer at least at the first location,

D) the first lacquer layer is fixed at least at the first location.

A method of multicolor, permanent painting of a product, wherein A) on the surface of the product, a first area, a first location within the first area, and a second location other than the first location are defined within the first area,

B1, B2) the surface is provided with a first adhesion promoter for a first lacquer layer at least at the first location, but not at the second location, using an application device,

C1) the surface is provided with the first lacquer layer at least at the first location,

D) the first lacquer layer is fixed at least at the first location.

The invention as such as well as structurally and / or functionally advantageous developments of the invention will be described below with reference to the accompanying drawings with reference to at least one preferred embodiment. In the drawings, corresponding elements are provided with the same reference numerals.

Fig. 1

Ablaufplan eines bevorzugten Ausführungsbeispiels eines erfindungsgemäßen Verfahrens, bei welchem eine Strukturierung einer unstrukturiert aufgetragenen Trennschicht erfolgt;

Fig. 2

Ablaufplan eines bevorzugten Ausführungsbeispiels eines erfindungsgemäßen Verfahrens, bei welchem eine Strukturierung einer unstrukturiert aufgetragenen Trennschicht erfolgt; und

Fig. 3

Ablaufplan eines bevorzugten Ausführungsbeispiels eines erfindungsgemäßen Verfahrens, bei welchem ein strukturiertes Auftragen einer Trennschicht erfolgt.

The drawings show:

Fig. 1

Flowchart of a preferred embodiment of a method according to the invention, in which a structuring of a unstructured applied release layer takes place;

Fig. 2

Flowchart of a preferred embodiment of a method according to the invention, in which a structuring of a unstructured applied release layer takes place; and

Fig. 3

Flowchart of a preferred embodiment of a method according to the invention, in which a structured application of a release layer takes place.

• A) Auf der Oberfläche 2 des Produkts 1 werden ein erster Bereich 4, ein erster Ort 5 innerhalb des ersten Bereichs und ein vom ersten Ort verschiedener, zweiter Ort 6 innerhalb des ersten Bereichs definiert. Dies bedeutet, dass der Bereich und die beiden Orte für die weitere Behandlung bestimmt und festgelegt werden. Entsprechende für eine weitgehende Automatisierung des gesamten Verfahrens benötigte Daten zur Form der zu behandelnden Oberfläche können mittels einer vorangehenden 3D-Analyse der Oberfläche des Substrats (vgl. http://www.steinbichler.de/de/main/comet_5.htm) erzeugt oder aus einer entsprechenden Datenbank geladen werden. Auf diese Weise können Kollisionen der bei Verfahrensdurchführung eingesetzten Vorrichtungen mit der Oberfläche vermieden oder aufgrund z.B. gekrümmter Flächen notwendige Verzerrungen der aufzubringenden Bilder berechnet werden. Es ist zu diesem Zeitpunkt allerdings nicht erforderlich, den Bereich und die beiden Orte auf der Oberfläche physikalisch und/oder chemisch durch eine Behandlung zu markieren. Der Bereich und die beiden Orte können bevorzugt entsprechend einem zu erzeugenden Muster oder Bild definiert werden. Auch eine zufallsgesteuerte Definition zur späteren Erzeugung von Zufallsmustern ist möglich. Der erste Bereich kann die gesamte zu behandelnde (Teil-) Oberfläche des Produkts sein. Der erste und der zweite Ort können zusammen den gesamten ersten Bereich abdecken.
• B1) Die Oberfläche 2 wird wenigstens im ersten Bereich 4 mit einer ersten Trennschicht 7 versehen.

FIG. 1 shows a flowchart of a preferred embodiment of a method according to the invention, in which a structuring of a unstructured applied release layer takes place. First, a (starting) product 1 or a substrate 1 is provided for the coating according to the invention. The provided product At the beginning of the process, an unpainted surface 2 or surface 2 with an already applied base lacquer layer 3 may have at least within a first region, the base lacquer layer and the first lacquer layer to be applied thereto being substantially different in color, ie different on the finished and finished product according to the invention create visual impressions. The product thus provided can be treated as follows:

• A) On the surface 2 of the product 1, a first area 4, a first location 5 within the first area and a second location 6 different from the first location 6 are defined within the first area. This means that the area and the two locations are determined and determined for further treatment. Corresponding data for the form of the surface to be treated required for extensive automation of the entire process can be generated by means of a preceding 3D analysis of the surface of the substrate (cf http://www.steinbichler.de/de/main/comet_5.htm) or be loaded from a corresponding database. In this way, collisions of the devices used in the implementation of the method can be avoided with the surface or due to eg curved surfaces necessary distortions of the images to be applied can be calculated. At this time, however, it is not necessary to physically and / or chemically mark the area and the two locations on the surface by a treatment. The area and the two locations may be preferably defined according to a pattern or image to be generated. A random definition for the later generation of random patterns is also possible. The first area can be the entire (part) surface of the product to be treated. The first and second locations together can cover the entire first area.
• B1) The surface 2 is provided with a first separating layer 7 at least in the first region 4.

Example: Surface spraying (by means of a spraying device 7 ') of a preferably liquid release agent 7 "and thus an intermediate layer 7 acting as release layer 7 for the first lacquer layer to be applied thereon to a preferably already monochrome lacquered product (optionally also lacquered with clear topcoat) 1 , preferably a metal sheet. Above about 200 ° C to about 300 ° C, the release layer is expected to evaporate or decompose easily. The release layer is preferably a double-layer system consisting of, for example, "liquid cover film" from the company 3M from Neuss and, secondly, the solvent-based preservative wax "Apex 106 II" from Pfinder from Böblingen. 3% by weight "Luconyl NG Black 0066" from BASF AG (carbon black preparation), 1% by weight "Evonik Tego Wet 240" and 5% by weight "Tixogel" are preferably added as additives to the commercially available product from 3M.

B2) The first separation layer 7 is acted upon by electromagnetic radiation 8 "of a corresponding device 8 'at the first location 5, but not at the second location 6. This results in a structuring of the unstructured applied separation layer, ie the first location, which was only previously defined, now points Physically and / or chemically at least one caused by the irradiation difference to non-irradiated locations of the first area 4 on.

Example: structuring of the separating layer 7 by radiation 8 ", wherein the irradiated location (so-called image locations) is changed by removing or changing the separating means 7", e.g. becomes more hydrophilic by changing to better accept a water-based varnish, or by removing a subsequent application of a varnish to the substrate 1 at that location. The radiation source 8 'can be a laser, solid-state laser, fiber laser, short-pulse laser, diode laser or LEDs. Preferably, a diode laser or (to better control the penetration depth and thus prevent damage to the base coat) a short-pulse laser is used.

• Beaufschlagung mit elektromagnetischer Strahlung 9",
• Beaufschlagung mit Wärme 9",
• Beaufschlagung mit Druckluft 9",
• Beaufschlagung mit einer Plasmaentladung 9" oder Koronaentladung 9",
• Beaufschlagung, insbesondere Überstreichen mit Vogelfedern 9", insbesondere Staub anziehende Emufedern 9",
• Beaufschlagung mit Flüssigkeit 9", insbesondere Wasser 9".

B3) Optionally, by using a corresponding device 9 'to be exposed to a medium 9 ", an intermediate step can be taken from the list of the following intermediate treatments:

• Exposure to electromagnetic radiation 9 ",
• Heat application 9 ",
• Pressurization with compressed air 9 ",
• Exposure to a plasma discharge 9 "or corona discharge 9",
• Loading, in particular painting over bird feathers 9 ", especially dust attractive Emufedern 9 ",
• Liquid 9 ", in particular water 9".

C1) The surface 2 is provided with a first lacquer layer 10 at least at the first location 5. For this purpose, a corresponding device 10 'such as. use a paint sprayer and apply the paint 10 ".

C2) The surface 2 may additionally be provided with at least the second location 6 with a first coating layer. Preferably, the surface 2 is provided in the entire first region 4 with a first lacquer layer 10.

Example: Application of a preferably water-based lacquer 10 ", which binds or adheres more strongly / better to the image areas than to the complementary" non-image areas. "Spraying of the lacquer may be carried out using conventional methods such as rotary atomizers, pneumatic atomizers or compressed air atomizers or without electrostatic charge and with or without potential separation.

D) The first lacquer layer 10 is fixed at least at the first location 5 using a corresponding fixing device 11 ', preferably a drying or curing device.

Example: pre-curing, partial curing or curing of the paint 10 "with conventional drying methods or corresponding dryers 11 '(eg hot air, NIR, IR, UV and / or electron beam 11"), wherein the applied according to B1 and B2 structured release layer 7 substantially remains unchanged.

E1) The first lacquer layer 10 can be at least partially and actively removed at the second location 6 using a corresponding cleaning device 12 'and a suitable cleaning medium 12 ".

E2) The first separating layer 7 may, together with the first lacquer layer 10 or separately, at the second location 6 using the same or a separate cleaning device 12 'are at least partially and actively removed.

Example: Partial or essentially complete rubbing or washing off of the essentially unchanged release layer 7 at the second location 6, wherein the lacquer 10 "carried by the release layer (at the so-called non-image points) is preferably removed substantially completely, eg by means of a device 12 'Which the surface 2 with gas, steam or liquid 12 "preferably under high pressure and / or elevated temperature acts. The liquid preferably contains additives such as e.g. Wetting agents and surfactants added.

Z) At the end of the process, a permanent fixing of the first lacquer layer 10 can take place by using a corresponding fixing device 13 ', preferably a drying or hardening device and particularly preferably an electromagnetic radiation 13 "using device 13'.

For example, postcuring or partial hardening again and thereby hardening of the lacquer 10 remaining at the first location 5 (at the so-called image locations) with conventional drying methods or corresponding drying agents 13 '(for example hot air, NIR, IR, UV and / or electron beam 13 ").

As an alternative to terminating the method according to method step Z, it is possible to carry out the method again with another varnish of different colors as shown in FIG FIG. 2 respectively.

F) On the surface 2, a third location 105 within a second area 104 and a fourth location 106 different from the third location are defined within the second area. The second area may be different from the first area 4 or may include the first area partially or completely (as shown). The two areas can also be essentially identical.

G1) The surface 2 is provided with a second separating layer 107 at least in the second region 104.

G2) The second separation layer 107 is acted on at the third location 105 with electromagnetic radiation 8 ".

G3) Optionally, by using a corresponding device 9 ', an intermediate step corresponding to method step B3 can take place.

H1, H2) The surface 2 is provided with a second lacquer layer 110 at least at the third and fourth locations 105, 106, the first lacquer layer and the second lacquer layer being different in color.

I) The second lacquer layer 110 is fixed at least at the third location 105.

J1, J2) The second lacquer layer 110 and the second separating layer 107-together with the second lacquer layer or separately-can be at least partially and actively removed at the fourth location 106. The fourth location preferably comprises at least the first location 5, so that the first paint layer 10 previously applied to the first location is once again exposed substantially completely.

K) The process steps F to J can be repeated at least once correspondingly to apply at least one further varnish layer 210 of different colors again at a further, different location 205.

Z) At the end of the process, a permanent fixation of the second lacquer layer 110 can take place.

FIG. 3 shows a flowchart of a preferred embodiment of a method according to the invention, in which a structured application of a release layer takes place.

First, as in FIG. 1 illustrated method - an unpainted or provided with a base coat (output) product 1 or a substrate 1 for the coating according to the invention provided. The product thus provided can be treated as follows:

A) On the surface 2 of the product 1 are - as in FIG. 1 illustrated method step A - a first region 4, a first location 5 within the first region and a second location different from the first location 6 defined within the first region.

B1) The surface 2 becomes - as in FIG. 1 illustrated method step B1 - at least at the second location 6, but not at the first location 5 using an applicator 7 'provided with a first separation layer 7.

For example, application of a preferably liquid release agent 7 "and thus an intermediate layer 7 acting as a release layer 7 for the first lacquer layer to be applied thereon by means of jet (continuous) or droplet (interrupted) generating devices 7 ', all mentioned above (see definition" release layer ") The above-mentioned wax or oil layer can preferably be applied with a Fuji-based ink jet system type Galaxy PH, 256/80 HM heated to about 90 ° C.

B3) Optionally - as in FIG. 1 shown method step B3 - take an intermediate step.

C1, C2) The surface 2 becomes - as in FIG. 1 illustrated method step C1, C2 and in the associated example described - at least at the first location 5 and additionally provided at least at the second location 6 with a first lacquer layer 10.

D) The first lacquer layer 10 is - as in FIG. 1 illustrated method step D and in the associated example described - fixed at least at the first location 5.

E1) The first lacquer layer 10 can - as in in FIG. 1 illustrated method step E1 - are at least partially and actively removed at the second location 6.

E2) The first separating layer 7 can - as in in FIG. 1 illustrated method step E2 and in the associated example described as well as together with the first lacquer layer 10 or separately - are at least partially and actively removed at the second location 6.

Z) At the end of the procedure - as in FIG. 1 shown method step Z and in the associated example described - a permanent fixation of the first lacquer layer done.

As an alternative to terminating the method according to method step Z, a renewed execution of the in FIG. 3 shown process with another, of first paint 10 "different colored paint 110" done. For this purpose - as in in FIG. 3 A third location 105 within a second area 104 and a fourth location 106 different from the third location are defined within the second area and corresponding to those in FIG FIG. 2 treated process steps G1, G3, H1, H2, I and J2, J2 treated. The application of the separating layer 107 takes place at least at the fourth location 106, but not at the third location 105. Also, a repetition in accordance with the in FIG. 2 illustrated method step K and a final permanent fixation according to the in FIG. 2 shown method step Z are possible.

LIST OF REFERENCE NUMBERS

1

Product / Substrate

2

surface

3

Based paint coating

4, 104

First area, second area

5, 105, 205

First place, third place, another place

6, 106, 206

Second place, fourth place, another place

7, 107

First separation layer, second separation layer

7 '

applicator

7 "

release agent

8th'

radiation source

8th"

electromagnetic radiation

9 '

Device for applying

9 "

Medium for the admission

10, 110, 210

First varnish layer, second varnish layer, further varnish layer

10 '

Device for the paint job

10 ", 110"

(first, second, further) varnish

11 '

fixing

11 '

Medium for fixation

12 '

cleaning device

12 "

cleaning media

13 '

fixing

13 "

Medium for fixation

A, F

Procedural step (definition of places)

B1, G1

Process step (application of the release layer)

B2, G2

Process step (irradiation of the separating layer)

B3, G3

Process step (intermediate treatment)

C1, H1

Process step (application of the paint layer)

C2, H2

Process step (application of the paint layer)

D, I

Process step (fixing the lacquer layer)

E1, J1

Process step (cleaning)

E2, J2

Process step (cleaning)

K

Procedural step (repeat)

Z

Process step (final fixing)

Claims (12)

Method for multicolor, permanent painting of a product, wherein A) on the surface (2) of the product (1) a first area (4), a first location (5) within the first area (4) and a second location (6) different from the first location (5) defined in the first area (4), B1, B2), the surface (2) is provided with a first separating layer (7) at least in the first region (4) and the first separating layer (7) at the first location (5) but not at the second location (6). magnetic radiation (8 ") is applied, C1) the surface (2) is provided with a first lacquer layer (10) at least at the first location (5), D) the first lacquer layer (10) is fixed at least at the first location (5). Method for multicolor, permanent painting of a product, wherein A) on the surface (2) of the product (1) a first area (4), a first location (5) within the first area (4) and a second location (6) different from the first location (5) defined in the first area (4), B1) the surface (2) is provided with a first separating layer (7) at least at the second location (6) but not at the first location (5) using an application device (7 '), C1) the surface (2) is provided with a first lacquer layer (10) at least at the first location (5), D) the first lacquer layer (10) is fixed at least at the first location (5). Method according to one of claims 1 or 2, wherein A) is provided at the beginning of the process a surface (2) with a base lacquer layer (3) at least within the first region (4), wherein the base lacquer layer (3) and the first lacquer layer (10) are different colors. Method according to one of claims 1 or 2, wherein Z) takes place at the end of the process, a permanent fixation of the first lacquer layer (10). Method according to one of claims 1 or 2, wherein C2) the surface (2) is provided with a first lacquer layer (10) at least at the second location (6), E1), the first lacquer layer (10) at the second location (6) is at least partially removed. The method of claim 5, wherein E2) the first separating layer (7) - at least partially removed at the second location (6) together with the first lacquer layer (10) or separately. The method of claims 1, 5 (appended to claim 1) and 6, wherein F) on the surface (2) is a third location (105) within a second area (104) and a fourth location other than the third location (105) (106) are defined within the second area (104), G1, G2), the surface (2) is provided with a second separation layer (107) at least in the second region (104) and the second separation layer (107) is acted on at the third location (105) with electromagnetic radiation, H1, H2) the surface (2) is provided with a second lacquer layer (110) at least at the third and the fourth location (105, 106), the first lacquer layer (10) and the second lacquer layer (110) being different in color, I) the second lacquer layer (110) is fixed at least at the third location (105), J1, J2), the second lacquer layer (110) and the second separating layer (107) - together with the second lacquer layer (110) or separately - are at least partially removed at the fourth location (106). The method of claims 2, 5 (appended to claim 2) and 6, wherein F) on the surface (2) is a third location (105) within a second area (104) and a fourth location other than the third location (105) (106) are defined within the second area (104),
G1) the surface (2) is provided with a second separating layer (107) at least at the fourth location (106) using an applicator device (7 '), H1, H2) the surface (2) at least at the third location (105) and at the fourth location (106) is provided with a second lacquer layer (110), wherein the first lacquer layer (10) and the second lacquer layer (110) are different colors, 1) the second lacquer layer (110) is fixed at least at the third location (105), J1, J2), the second lacquer layer (110) and the second separating layer (107) - together with the second lacquer layer (110) or separately - are at least partially removed at the fourth location (106). Method according to one of claims 7 or 8, wherein K) the method steps F, G1, G2, H1, H2, I, J1 and J2 according to claim 7 or the method steps F, G1, H1, H2, I, J1 and J2 according to claim 8 for applying at least one further, again differently colored Lacquer layer at another, again different place at least once to be repeated accordingly. Method according to one of claims 7 or 8, wherein - the third location (105) is equal to the first location (5) and the second resist layer (110) comprises a colorless, translucent, translucent or transparent lacquer (110), or - the third location (105) is different from the first location (5) and the second resist layer (110) comprises a colored or opaque lacquer (110). Method according to one of claims 1 or 2, wherein
after process step B2 according to claim 1 or after process step B1 according to claim 2 and before process step C1, an intermediate step B3 takes place from the list of the following intermediate treatments: - exposure to electromagnetic radiation (9 "), - exposure to heat (9 "), - pressurization with compressed air (9 "), - exposure to a plasma discharge or corona discharge (9 "), - loading, in particular painting over with bird feathers (9 "), in particular dust-catching emu feathers, - Liquid (9 "), especially water. Method according to one of claims 1 or 2, wherein
the medium (7 ") of the separating layer (7) at least one medium from the list of the following additives are added: Absorber for electromagnetic radiation, in particular for infrared, near infrared or ultraviolet, - initiator, Wetting agent, - dewetting agent, Thickener, Dispersing agents, - solubilizers, - Catalyst.

Images