EP2953733B1 - Painting method - Google Patents

Painting method Download PDF

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Publication number
EP2953733B1
EP2953733B1 EP14704522.3A EP14704522A EP2953733B1 EP 2953733 B1 EP2953733 B1 EP 2953733B1 EP 14704522 A EP14704522 A EP 14704522A EP 2953733 B1 EP2953733 B1 EP 2953733B1
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EP
European Patent Office
Prior art keywords
pattern
coat layer
painting
base coat
wet
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EP14704522.3A
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German (de)
French (fr)
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EP2953733A1 (en
Inventor
Hans-Georg Fritz
Benjamin WÖHR
Marcus Kleiner
Timo Beyl
Frank Herre
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Duerr Systems AG
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Duerr Systems AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/34—Applying different liquids or other fluent materials simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
    • B05D5/066—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones achieved by multilayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/572—Three layers or more the last layer being a clear coat all layers being cured or baked together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/574—Three layers or more the last layer being a clear coat at least some layers being let to dry at least partially before applying the next layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/577—Three layers or more the last layer being a clear coat some layers being coated "wet-on-wet", the others not
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/578—No curing step for the last layer
    • B05D7/5783—No curing step for any layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/578—No curing step for the last layer
    • B05D7/5783—No curing step for any layer
    • B05D7/5785—No curing step for any layer all layers being applied simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects

Definitions

  • the invention relates to a painting method for painting a component, namely a motor vehicle body component.
  • KTL cathode dip paint
  • decorative lines, design strips, patterns or graphics are applied to the component.
  • decorative strips are applied to the clear lacquer layer using a brush. After the manually applied decorative strip has dried, a further clear lacquer layer is then applied and baked.
  • Figure 1 shows an example of the multi-layer structure of such a conventional paint on a motor vehicle body component 1.
  • the paint consists of a phosphate layer 2, a primer 3 of a cathode dip paint (KTL), a filler 4, a basecoat layer 5, a clear coat layer 6, a pattern 7 (e.g. Decorative strips) and a further clear lacquer layer 8 applied to the pattern 7.
  • Figure 2 accordingly shows in the form of a flow chart the painting process for painting the paint Figure 1 .
  • the flowchart here begins in a step S1 with the application of the primer 3 from a cathode dip lacquer, but the phosphate layer 2 can still be applied in a preceding method step, which is not shown here is.
  • the filler layer 4 is then applied in a step S2.
  • the basecoat film 5 is then applied in a step S3 and the basecoat is dried in a step S4.
  • the clearcoat layer 6 is then applied in a step S5.
  • the clear lacquer layer is then baked in a step S6.
  • a step S7 the pattern 7 is then manually applied, for example in the form of a decorative strip which can be applied manually with a brush.
  • the pattern 7 is then dried in a step S8.
  • the further clear lacquer layer 8 is then applied in a step S9 and baked in a step S10.
  • a disadvantage of this known method for applying a pattern is first of all the fact that the additional clear lacquer layer 8 is required. Associated with this is the need for a further drying step.
  • a painting process is known in which a pattern is applied directly to the basecoat, ie without a clearcoat in between.
  • the pattern becomes one Layer composite formed, which comprises a carrier and a cured lacquer layer.
  • the layer composite is pressed with the side of the hardened lacquer layer onto the base lacquer layer, whereupon the carrier can then be removed.
  • the pattern is therefore not applied in the course of a painting process and is therefore much more complex.
  • the state of the art also includes WO 2007/131660 A1 , the company brochure "Dürr News June 2006 Edition" and DE 10 2010 019 612 A1 such as GB 2 399 040 A , EP 1 810 757 A1 , WO 2007/131660 A1 , EP 2 367 639 A1 , US 2004/217202 A1 , EP 2 208 541 A1 and WO 02/22281 A2 .
  • EP 0 822 011 A2 a painting method according to the preamble of claim 1.
  • this patent application deals only in general with decorative patterns and does not relate to the painting of partial areas, in particular not on a roof rail of a motor vehicle body.
  • the object of the invention is therefore to create a correspondingly improved painting process.
  • This object is achieved by a painting method according to the invention.
  • the invention encompasses the general technical teaching of applying the pattern to the basecoat without an intermediate clear coat, so that an additional clear coat above the pattern can be dispensed with.
  • a single clear coat is applied, which not only covers the basecoat, but also the pattern.
  • the wording of the pattern application used in the context of the invention relates to painting processes, such as printing processes.
  • the pattern is a partial surface, namely a roof spar of a motor vehicle body which is to be painted in a different color than the other motor vehicle body.
  • the term pattern used in the context of the invention also means that the pattern covers only a partial area of the component surface, i.e. not the entire component surface.
  • the pattern is applied directly to the basecoat film. This means that between the basecoat layer on the one hand and the pattern on the other hand there is neither a clearcoat layer nor any other layer made of another material.
  • the basecoat film is only flashed off before the pattern is applied, and the pattern is only flashed off before the clearcoat is applied.
  • the basecoat film on the other hand, dried before applying the pattern, whereas the pattern is only aired off before the clear lacquer is applied.
  • Yet another variant of the invention provides that the basecoat film is flashed off before the pattern is applied, whereas the pattern is intermediately dried before the clearcoat is applied.
  • the basecoat film is intermediately dried before the pattern is applied, and the pattern is also intermediately dried before the clearcoat is applied.
  • the basecoat film and the pattern are applied wet-on-wet without drying or flashing off in the meantime.
  • the pattern is already applied at a point in time when the underlying base coat layer has not yet dried completely, so that the wet paint of the pattern meets the still wet paint of the base coat layer, which is why one also calls it "wet-in wet "paint speaks.
  • the basecoat film, the pattern and the clearcoat film are applied wet-on-wet in a so-called 3-wet process without intermediate drying or flashing off.
  • the liquid lacquer of the pattern is applied at a point in time when the base lacquer layer underneath is not yet completely dry.
  • the liquid clear coat is applied at a time when the one underneath Lacquer of the pattern has not yet dried completely.
  • the three lacquers (base lacquer, lacquer of the sample and clear lacquer) of the three lacquer layers lying one above the other are therefore at least briefly together in a liquid state.
  • the basecoat film and the pattern are applied together in a painting booth, in particular in the wet-on-wet process mentioned above, without any intermediate drying or drying.
  • the pattern and the clear lacquer layer are applied together in a spray booth, in particular in the wet-on-wet process mentioned above, without intermediate drying or drying.
  • the basecoat film, the pattern and the clearcoat film are applied together in a painting booth, in particular in the 3-wet process mentioned above, without any intermediate drying or drying.
  • the basecoat, the pattern and / or the clearcoat are applied in several painting booths, which are arranged one behind the other along a painting line.
  • the basecoat, the pattern and / or the clearcoat are each applied automatically by means of a multi-axis, freely programmable painting robot.
  • Such painting robots are known per se from the prior art and therefore do not have to be described in more detail.
  • the pattern is applied here by an application device which does not emit a coating agent mist, but rather a narrowly limited jet of coating agent.
  • application devices are, for example, from DE 10 2010 019 612 A1 known.
  • the basecoat layer and the clearcoat layer are preferably applied by a conventional atomizer, such as a rotary atomizer.
  • the base lacquer layer, the pattern and the clear lacquer layer preferably consist of wet lacquer.
  • the base lacquer layer, the pattern and the clear lacquer layer preferably consist of wet lacquer.
  • Figure 3 shows a cross-sectional view through a motor vehicle paint applied according to the invention, partially with the paint according to Figure 1 matches, so as to avoid repetition towards the description above Figure 1 is referred to, the same reference numerals being used for corresponding details.
  • a special feature of this motor vehicle paint applied according to the invention is that the pattern 7 is applied directly to the basecoat layer 5, ie without the intermediate clear coat layer 6, as in the conventional motor vehicle paint Figure 1 .
  • the motor vehicle paint according to the invention thus has only the clear coat 8, whereas the further clear coat 6 previously required is not required. This is advantageous because it saves two process steps for applying and drying the clear lacquer layer 6.
  • Figure 4A shows an example of a painting method according to the invention in the form of a flow chart, wherein Figure 4B shows the corresponding structure of a painting system according to the invention.
  • the basecoat layer 5 is applied in a step S3.
  • the painting system has a separate painting booth 9, in which the basecoat layer 5 is applied by a multi-axis painting robot with a rotary atomizer as an application device.
  • a conveyor 10 which conveys motor vehicle bodies 11 through the paint shop in the direction of the arrow, runs through the paint booth 1 along a paint line.
  • step S4 the basecoat layer 5 is then dried in a drying station 12.
  • the pattern 7 is then applied in a step S5, which takes place in a further painting booth 13.
  • the pattern 7 is also applied here by a multi-axis painting robot which carries an application device which does not produce a coating mist, but rather a sharply delimited coating agent jet, such an application device, for example, from DE 10 2010 019 612 A1 is known.
  • a step S6 the pattern 7 is then dried in a drying station 14.
  • the clear lacquer layer 8 is then applied in a further painting booth in a step S7 15 applied.
  • the clear lacquer layer 8 is then baked in a baking station 16 in a step S8.
  • FIGS. 5A and 5B show a modification of the embodiment according to the Figures 4A and 4B , so that to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that an exhausting station 12 ′ is provided instead of the drying station 12.
  • a special feature of this exemplary embodiment is that instead of the drying station 14 in Figure 4B an exhaust station 14 'is provided.
  • a special feature of this exemplary embodiment is that the pattern 7 "wet-on-wet" in a step S4 Basecoat layer 5 is applied, this being done in a common painting booth 17.
  • FIGS. 8A and 8B also partially corresponds to the exemplary embodiments described above, so that reference is made to the above description in order to avoid repetition, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that the clear lacquer layer 8, the pattern 7 and the basecoat layer 5 are applied together in a 3-wet process in the same painting booth 18.

Description

Die Erfindung betrifft ein Lackierverfahren zum Lackieren eines Bauteils, nämlich eines Kraftfahrzeugkarosseriebauteils.The invention relates to a painting method for painting a component, namely a motor vehicle body component.

Bei der Lackierung von Kraftfahrzeugkarosseriebauteilen werden üblicherweise mehrere Lackschichten aufgebracht, nämlich unter anderem eine Schicht aus einem Kathodentauchlack (KTL), eine Füllerschicht, eine Basislackschicht und ganz außen eine Klarlackschicht. Weiterhin ist es aus dem Stand der Technik bekannt, Zierlinien, Designstreifen, Muster oder Grafiken auf das Bauteil aufzubringen. Beispielsweise werden Zierstreifen mittels eines Pinsels auf die Klarlackschicht aufgebracht. Nach dem Trocknen des manuell aufgebrachten Zierstreifens wird dann eine weitere Klarlackschicht aufgebracht und eingebrannt.When painting motor vehicle body components, several layers of paint are usually applied, namely, among other things, a layer made of a cathode dip paint (KTL), a filler layer, a base coat layer and a clear coat layer on the outside. Furthermore, it is known from the prior art to apply decorative lines, design strips, patterns or graphics to the component. For example, decorative strips are applied to the clear lacquer layer using a brush. After the manually applied decorative strip has dried, a further clear lacquer layer is then applied and baked.

Figur 1 zeigt exemplarisch den mehrschichtigen Aufbau eines solchen herkömmlichen Lacks auf einem Kraftfahrzeugkarosseriebauteil 1. So besteht der Lack aus einer Phospatschicht 2, einer Grundierung 3 aus einem Kathodentauchlack (KTL), einem Füller 4, einer Basislackschicht 5, einer Klarlackschicht 6, einem Muster 7 (z.B. Zierstreifen) und einer auf das Muster 7 aufgebrachten weiteren Klarlackschicht 8. Figure 1 shows an example of the multi-layer structure of such a conventional paint on a motor vehicle body component 1. Thus, the paint consists of a phosphate layer 2, a primer 3 of a cathode dip paint (KTL), a filler 4, a basecoat layer 5, a clear coat layer 6, a pattern 7 (e.g. Decorative strips) and a further clear lacquer layer 8 applied to the pattern 7.

Figur 2 zeigt entsprechend in Form eines Flussdiagramms das Lackierverfahren zum Lackieren des Lacks aus Figur 1. Das Flussdiagramm beginnt hierbei in einem Schritt S1 mit dem Auftragen der Grundierung 3 aus einem Kathodentauchlack, jedoch kann in einem vorgelagerten Verfahrensschritt noch die Phosphatschicht 2 aufgetragen werden, was hier nicht dargestellt ist. In einem Schritt S2 wird dann die Füllerschicht 4 aufgetragen. Daraufhin wird dann in einem Schritt S3 die Basislackschicht 5 aufgetragen und in einem Schritt S4 wird der Basislack getrocknet. Nach dem Trocknen des Basislacks wird dann die Klarlackschicht 6 in einem Schritt S5 aufgetragen. Anschließend wird die Klarlackschicht dann in einem Schritt S6 eingebrannt. Daraufhin wird dann in einem Schritt S7 manuell das Muster 7 aufgetragen, beispielsweise in Form eines Zierstreifens, der manuell mit einem Pinsel appliziert werden kann. Daraufhin wird das Muster 7 in einem Schritt S8 zwischengetrocknet. Schließlich wird dann in einem Schritt S9 die weitere Klarlackschicht 8 aufgetragen und in einem Schritt S10 eingebrannt. Figure 2 accordingly shows in the form of a flow chart the painting process for painting the paint Figure 1 . The flowchart here begins in a step S1 with the application of the primer 3 from a cathode dip lacquer, but the phosphate layer 2 can still be applied in a preceding method step, which is not shown here is. The filler layer 4 is then applied in a step S2. The basecoat film 5 is then applied in a step S3 and the basecoat is dried in a step S4. After the basecoat has dried, the clearcoat layer 6 is then applied in a step S5. The clear lacquer layer is then baked in a step S6. Then, in a step S7, the pattern 7 is then manually applied, for example in the form of a decorative strip which can be applied manually with a brush. The pattern 7 is then dried in a step S8. Finally, the further clear lacquer layer 8 is then applied in a step S9 and baked in a step S10.

Nachteilig an diesem bekannten Verfahren zum Aufbringen eines Musters (z.B. Zierstreifen) ist zunächst die Tatsache, dass die zusätzliche Klarlackschicht 8 erforderlich ist. Damit verbunden ist auch die Notwendigkeit eines weiteren Trocknungsschrittes.A disadvantage of this known method for applying a pattern (e.g. decorative strips) is first of all the fact that the additional clear lacquer layer 8 is required. Associated with this is the need for a further drying step.

Ein weiterer Nachteil des vorstehend beschriebenen bekannten Lackierverfahrens besteht darin, dass das Muster 7 manuell aufgebracht wird. Hierbei ist in der Regel auch Abdeckmaterial (z.B. Folien, Klebebänder) erforderlich, um die Bauteiloberfläche entsprechend dem gewünschten Muster 7 zu maskieren, wobei die Bereitstellung und Entsorgung des Abdeckmaterials mit Zusatzkosten verbunden ist. Ferner führt das manuelle Aufbringen des Musters 7 auch zu relativ vielen Fehlern.Another disadvantage of the known painting method described above is that the pattern 7 is applied manually. As a rule, cover material (e.g. foils, adhesive tapes) is also required to mask the component surface in accordance with the desired pattern 7, the provision and disposal of the cover material being associated with additional costs. Furthermore, the manual application of the pattern 7 also leads to a relatively large number of errors.

Aus DE 10 2010 014 381 A1 ist ein Lackierverfahren bekannt, bei dem ein Muster direkt auf die Basislackschicht aufgebracht wird, d.h. ohne eine dazwischen liegende Klarlackschicht. Allerdings wird das Muster hierbei aus einem Schichtverbund gebildet, der einen Träger und eine ausgehärtete Lackschicht umfasst. Der Schichtverbund wird hierbei mit der Seite der ausgehärteten Lackschicht auf die Basislackschicht aufgedrückt, woraufhin dann der Träger abgezogen werden kann. Das Aufbringen des Musters erfolgt hierbei also nicht im Rahmen eines Lackierverfahrens und ist deshalb wesentlich aufwändiger.Out DE 10 2010 014 381 A1 a painting process is known in which a pattern is applied directly to the basecoat, ie without a clearcoat in between. However, the pattern becomes one Layer composite formed, which comprises a carrier and a cured lacquer layer. The layer composite is pressed with the side of the hardened lacquer layer onto the base lacquer layer, whereupon the carrier can then be removed. The pattern is therefore not applied in the course of a painting process and is therefore much more complex.

Weiterhin ist zum Stand der Technik hinzuweisen auf US 2004/0028823 A1 . Hierbei wird jedoch kein Muster im Sinne der Erfindung aufgetragen.The state of the art should also be pointed out US 2004/0028823 A1 . However, no pattern in the sense of the invention is applied here.

Ferner umfasst der Stand der Technik noch WO 2007/131660 A1 , die Firmendruckschrift "Dürr News Juni 2006 Ausgabe" und DE 10 2010 019 612 A1 sowie GB 2 399 040 A , EP 1 810 757 A1 , WO 2007/131660 A1 , EP 2 367 639 A1 , US 2004/217202 A1 , EP 2 208 541 A1 und WO 02/22281 A2 .The state of the art also includes WO 2007/131660 A1 , the company brochure "Dürr News June 2006 Edition" and DE 10 2010 019 612 A1 such as GB 2 399 040 A , EP 1 810 757 A1 , WO 2007/131660 A1 , EP 2 367 639 A1 , US 2004/217202 A1 , EP 2 208 541 A1 and WO 02/22281 A2 .

Weiterhin offenbart die nachveröffentlichte Patentanmeldung WO 2013/182280 A2 ein ähnliches Lackierverfahren, das jedoch nicht die Lackierung eines Dachholms betrifft.Furthermore, the post-published patent application discloses WO 2013/182280 A2 a similar painting process, but which does not affect the painting of a roof spar.

Schließlich offenbart EP 0 822 011 A2 ein Lackierverfahren gemäß dem Oberbegriff von Anspruch 1. Allerdings befasst sich diese Patentanmeldung nur allgemein mit Dekormustern und betrifft nicht die Lackierung von Teilflächen, insbesondere nicht auf einem Dachholm einer Kraftfahrzeugkarosserie.Finally revealed EP 0 822 011 A2 a painting method according to the preamble of claim 1. However, this patent application deals only in general with decorative patterns and does not relate to the painting of partial areas, in particular not on a roof rail of a motor vehicle body.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein entsprechend verbessertes Lackierverfahren zu schaffen.The object of the invention is therefore to create a correspondingly improved painting process.

Diese Aufgabe wird durch ein erfindungsgemäßes Lackierverfahren gemäß Anspruch 1 gelöst.This object is achieved by a painting method according to the invention.

Die Erfindung umfasst die allgemeine technische Lehre, das Muster ohne eine dazwischen liegende Klarlackschicht auf die Basislackschicht aufzubringen, so dass auf eine zusätzliche Klarlackschicht über dem Muster verzichtet werden kann. Im Rahmen des erfindungsgemäßen Lackierverfahrens wird also vorzugsweise nur eine einzige Klarlackschicht aufgetragen, die nicht nur die Basislackschicht abdeckt, sondern auch das Muster.The invention encompasses the general technical teaching of applying the pattern to the basecoat without an intermediate clear coat, so that an additional clear coat above the pattern can be dispensed with. In the context of the painting process according to the invention, therefore, preferably only a single clear coat is applied, which not only covers the basecoat, but also the pattern.

Die im Rahmen der Erfindung verwendete Formulierung des Auftragens des Musters bezieht sich auf Lackierverfahren, wie beispielsweise Druckverfahren.The wording of the pattern application used in the context of the invention relates to painting processes, such as printing processes.

Gemäß der Erfindung ist das Muster eine Teilfläche, nämlich ein Dachholm einer Kraftfahrzeugkarosserie, die in einer anderen Farbe lackiert werden soll als die sonstige Kraftfahrzeugkarosserie. Der im Rahmen der Erfindung verwendete Begriff eines Musters bedeutet auch, dass das Muster nur eine Teilfläche der Bauteiloberfläche abdeckt, d.h. nicht die gesamte Bauteiloberfläche.According to the invention, the pattern is a partial surface, namely a roof spar of a motor vehicle body which is to be painted in a different color than the other motor vehicle body. The term pattern used in the context of the invention also means that the pattern covers only a partial area of the component surface, i.e. not the entire component surface.

In einem bevorzugten Ausführungsbeispiel der Erfindung wird das Muster direkt auf die Basislackschicht aufgebracht. Dies bedeutet, dass zwischen der Basislackschicht einerseits und dem Muster andererseits weder eine Klarlackschicht angeordnet ist, noch eine sonstige Schicht aus einem anderen Material.In a preferred embodiment of the invention, the pattern is applied directly to the basecoat film. This means that between the basecoat layer on the one hand and the pattern on the other hand there is neither a clearcoat layer nor any other layer made of another material.

In einer Variante der Erfindung wird die Basislackschicht vor dem Aufbringen des Musters nur abgelüftet und auch das Muster wird vor dem Aufbringen des Klarlacks nur abgelüftet.In a variant of the invention, the basecoat film is only flashed off before the pattern is applied, and the pattern is only flashed off before the clearcoat is applied.

In einer anderen Variante der Erfindung wird die Basislackschicht dagegen vor dem Aufbringen des Musters zwischengetrocknet, wohingegen das Muster vor dem Aufbringen des Klarlacks nur abgelüftet wird.In another variant of the invention, the basecoat film on the other hand, dried before applying the pattern, whereas the pattern is only aired off before the clear lacquer is applied.

Eine wiederum andere Variante der Erfindung sieht dagegen vor, dass die Basislackschicht vor dem Aufbringen des Musters abgelüftet wird, wohingegen das Muster vor dem Aufbringen des Klarlacks zwischengetrocknet wird.Yet another variant of the invention, on the other hand, provides that the basecoat film is flashed off before the pattern is applied, whereas the pattern is intermediately dried before the clearcoat is applied.

Ferner besteht auch die Möglichkeit, dass die Basislackschicht vor dem Aufbringen des Musters zwischengetrocknet wird, wie auch das Muster vor dem Aufbringen des Klarlacks zwischengetrocknet wird.Furthermore, there is also the possibility that the basecoat film is intermediately dried before the pattern is applied, and the pattern is also intermediately dried before the clearcoat is applied.

In noch einer anderen Variante der Erfindung ist vorgesehen, dass die Basislackschicht und das Muster nass-in-nass aufgetragen werden ohne ein zwischenzeitliches Trocknen oder Ablüften. Dies bedeutet, dass das Muster bereits zu einem Zeitpunkt aufgetragen wird, zu dem die darunter liegende Basislackschicht noch nicht vollständig getrocknet ist, so dass der nasse Lack des Musters auf den noch nassen Lack der Basislackschicht trifft, weswegen man auch von "nass-in-nass"-Lackierung spricht.In yet another variant of the invention, it is provided that the basecoat film and the pattern are applied wet-on-wet without drying or flashing off in the meantime. This means that the pattern is already applied at a point in time when the underlying base coat layer has not yet dried completely, so that the wet paint of the pattern meets the still wet paint of the base coat layer, which is why one also calls it "wet-in wet "paint speaks.

Weiterhin besteht im Rahmen der Erfindung die Möglichkeit, dass die Basislackschicht, das Muster und die Klarlackschicht in einem sogenannten 3-wet-Prozess nass-in-nass aufgetragen werden ohne ein zwischenzeitliches Trocknen oder Ablüften. Dies bedeutet, dass der flüssige Lack des Musters zu einem Zeitpunkt aufgetragen wird, zu dem die darunter befindliche Basislackschicht noch nicht vollständig getrocknet ist. Weiterhin bedeutet dies, dass der flüssige Klarlack zu einem Zeitpunkt aufgetragen wird, zu dem der darunter befindliche Lack des Musters noch nicht vollständig getrocknet ist. Bei einem 3-wet-Prozess sind die drei Lacke (Basislack, Lack des Musters und Klarlack) der drei übereinander liegenden Lackschichten also zumindest kurzzeitig noch gemeinsam in einem flüssigen Zustand.Furthermore, there is the possibility within the scope of the invention that the basecoat film, the pattern and the clearcoat film are applied wet-on-wet in a so-called 3-wet process without intermediate drying or flashing off. This means that the liquid lacquer of the pattern is applied at a point in time when the base lacquer layer underneath is not yet completely dry. This also means that the liquid clear coat is applied at a time when the one underneath Lacquer of the pattern has not yet dried completely. In a 3-wet process, the three lacquers (base lacquer, lacquer of the sample and clear lacquer) of the three lacquer layers lying one above the other are therefore at least briefly together in a liquid state.

In einem Ausführungsbeispiel der Erfindung werden die Basislackschicht und das Muster gemeinsam in einer Lackierkabine aufgetragen, insbesondere in dem vorstehend erwähnten Nass-in-nass-Prozess ohne ein zwischenzeitliches Trocknen oder Ablüften.In one exemplary embodiment of the invention, the basecoat film and the pattern are applied together in a painting booth, in particular in the wet-on-wet process mentioned above, without any intermediate drying or drying.

In einem anderen Ausführungsbeispiel der Erfindung werden dagegen das Muster und die Klarlackschicht gemeinsam in einer Lackierkabine aufgetragen, insbesondere in dem vorstehend erwähnten Nass-in-nass-Prozess, ohne zwischenzeitliches Trocknen oder Ablüften.In another exemplary embodiment of the invention, on the other hand, the pattern and the clear lacquer layer are applied together in a spray booth, in particular in the wet-on-wet process mentioned above, without intermediate drying or drying.

In noch einem anderen Ausführungsbeispiel der Erfindung werden die Basislackschicht, das Muster und die Klarlackschicht gemeinsam in einer Lackierkabine aufgetragen, insbesondere in dem vorstehend erwähnten 3-wet-Prozess ohne ein zwischenzeitliches Trocknen oder Ablüften.In yet another exemplary embodiment of the invention, the basecoat film, the pattern and the clearcoat film are applied together in a painting booth, in particular in the 3-wet process mentioned above, without any intermediate drying or drying.

Es besteht jedoch auch die Möglichkeit, dass die Basislackschicht, das Muster und/oder die Klarlackschicht in mehreren Lackierkabinen aufgetragen werden, die entlang einer Lackierstraße hintereinander angeordnet sind.However, there is also the possibility that the basecoat, the pattern and / or the clearcoat are applied in several painting booths, which are arranged one behind the other along a painting line.

In einem bevorzugten Ausführungsbeispiel der Erfindung werden die Basislackschicht, das Muster und/oder die Klarlackschicht jeweils mittels eines mehrachsigen, frei programmierbaren Lackierroboters automatisch aufgetragen. Derartige Lackierroboter sind an sich aus dem Stand der Technik bekannt und müssen deshalb nicht näher beschrieben werden.In a preferred embodiment of the invention, the basecoat, the pattern and / or the clearcoat are each applied automatically by means of a multi-axis, freely programmable painting robot. Such painting robots are known per se from the prior art and therefore do not have to be described in more detail.

Das Muster wird hierbei von einem Applikationsgerät aufgetragen, das keinen Beschichtungsmittelnebel abgibt, sondern einen eng begrenzten Beschichtungsmittelstrahl. Derartige Applikationsgeräte sind beispielsweise aus DE 10 2010 019 612 A1 bekannt.The pattern is applied here by an application device which does not emit a coating agent mist, but rather a narrowly limited jet of coating agent. Such application devices are, for example, from DE 10 2010 019 612 A1 known.

Die Basislackschicht und die Klarlackschicht werden dagegen vorzugsweise von einem herkömmlichen Zerstäuber aufgetragen, wie beispielsweise einem Rotationszerstäuber.The basecoat layer and the clearcoat layer, however, are preferably applied by a conventional atomizer, such as a rotary atomizer.

Es wurde bereits vorstehend erwähnt, dass die Basislackschicht, das Muster und die Klarlackschicht vorzugsweise aus Nasslack bestehen. Es besteht jedoch im Rahmen der Erfindung grundsätzlich auch die Möglichkeit, anstelle von Nasslack einen Pulverlack für die Basislackschicht, das Muster und/oder die Klarlackschicht einzusetzen.It has already been mentioned above that the base lacquer layer, the pattern and the clear lacquer layer preferably consist of wet lacquer. Within the scope of the invention, however, it is also possible in principle to use a powder coating for the basecoat layer, the pattern and / or the clearcoat layer instead of wet lacquer.

Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet oder werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführungsbeispiele der Erfindung anhand der Figuren näher erläutert. Es zeigen:

Figur 1
eine Querschnittsansicht durch den eingangs beschriebenen herkömmlichen Kraftfahrzeuglack mit einem Muster,
Figur 2
das eingangs beschriebene herkömmliche Lackierverfahren zum Aufbringen eines Musters in Form eines Flussdiagramms,
Figur 3
eine Querschnittsansicht durch einen erfindungsgemäßen mehrschichtigen Lack mit einem Muster,
Figur 4A
ein Flussdiagramm zur Verdeutlichung einer Variante des erfindungsgemäßen Lackierverfahrens,
Figur 4B
eine schematische Darstellung einer erfindungsgemäßen Lackieranlage zur Ausführung des Lackierverfahrens gemäß Figur 4A,
Figur 5A
ein weiteres Flussdiagramme einer anderen Variante eines erfindungsgemäßen Lackierverfahrens,
Figur 5B
eine schematische Darstellung einer erfindungsgemäßen Lackieranlage zur Ausführung des Lackierverfahrens gemäß Figur 5A,
Figur 6A
ein weiteres Flussdiagramm einer anderen Variante eines erfindungsgemäßen Lackierverfahrens,
Figur 6B
eine schematische Darstellung einer erfindungsgemäßen Lackieranlage zur Ausführung des Lackierverfahrens gemäß Figur 6A,
Figur 7A
ein Flussdiagramm zur Verdeutlichung einer anderen Variante des erfindungsgemäßen Lackierverfahrens,
Figur 7B
eine schematische Darstellung zur Verdeutlichung einer Lackieranlage zur Ausführung des Lackierverfahrens gemäß Figur 7A,
Figur 8A
ein Flussdiagramm zur Verdeutlichung eines erfindungsgemäßen Lackierverfahrens mit einem 3-wet-Prozess zum Aufbringen des Musters,
Figur 8B
eine schematische Darstellung zur Verdeutlichung des Aufbaus einer erfindungsgemäßen Lackieranlage zur Ausführung des Lackierverfahrens gemäß Figur 8A.
Other advantageous developments of the invention are characterized in the subclaims or are explained in more detail below together with the description of the preferred exemplary embodiments of the invention with reference to the figures. Show it:
Figure 1
2 shows a cross-sectional view through the conventional motor vehicle paint described above with a pattern,
Figure 2
the conventional painting process described at the outset for applying a pattern in the form of a flow chart,
Figure 3
2 shows a cross-sectional view through a multi-layer lacquer according to the invention with a pattern,
Figure 4A
2 shows a flowchart to illustrate a variant of the painting method according to the invention,
Figure 4B
a schematic representation of a painting system according to the invention for carrying out the painting process according to Figure 4A ,
Figure 5A
another flow diagram of another variant of a painting method according to the invention,
Figure 5B
a schematic representation of a painting system according to the invention for carrying out the painting process according to Figure 5A ,
Figure 6A
another flow diagram of another variant of a painting method according to the invention,
Figure 6B
a schematic representation of a painting system according to the invention for carrying out the painting process according to Figure 6A ,
Figure 7A
2 shows a flowchart to illustrate another variant of the painting method according to the invention,
Figure 7B
is a schematic representation to illustrate a painting system for executing the painting process according to Figure 7A ,
Figure 8A
a flowchart to illustrate a painting method according to the invention with a 3-wet process to apply the pattern,
Figure 8B
is a schematic representation to illustrate the structure of a painting system according to the invention for performing the painting process according to Figure 8A .

Figur 3 zeigt eine Querschnittsansicht durch einen erfindungsgemäß aufgebrachten Kraftfahrzeuglack, der teilweise mit dem Lack gemäß Figur 1 übereinstimmt, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung zu Figur 1 verwiesen wird, wobei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden. Figure 3 shows a cross-sectional view through a motor vehicle paint applied according to the invention, partially with the paint according to Figure 1 matches, so as to avoid repetition towards the description above Figure 1 is referred to, the same reference numerals being used for corresponding details.

Eine Besonderheit dieses erfindungsgemäß aufgebrachten Kraftfahrzeuglacks besteht darin, dass das Muster 7 direkt auf die Basislackschicht 5 aufgebracht ist, d.h. ohne die dazwischen liegende Klarlackschicht 6, wie bei dem herkömmlichen Kraftfahrzeuglack gemäß Figur 1.A special feature of this motor vehicle paint applied according to the invention is that the pattern 7 is applied directly to the basecoat layer 5, ie without the intermediate clear coat layer 6, as in the conventional motor vehicle paint Figure 1 .

Der erfindungsgemäße Kraftfahrzeuglack weist also nur die Klarlackschicht 8 auf, wohingegen die bisher erforderliche weitere Klarlackschicht 6 nicht erforderlich ist. Dies ist vorteilhaft, weil dadurch zwei Prozessschritte zum Aufbringen und zum Trocknen der Klarlackschicht 6 eingespart werden können.The motor vehicle paint according to the invention thus has only the clear coat 8, whereas the further clear coat 6 previously required is not required. This is advantageous because it saves two process steps for applying and drying the clear lacquer layer 6.

Figur 4A zeigt exemplarisch ein erfindungsgemäßes Lackierverfahren in Form eines Flussdiagramms, wobei Figur 4B den entsprechenden Aufbau einer erfindungsgemäßen Lackieranlage zeigt. Figure 4A shows an example of a painting method according to the invention in the form of a flow chart, wherein Figure 4B shows the corresponding structure of a painting system according to the invention.

Teilweise stimmt dieses Flussdiagramm mit dem Flussdiagramm aus Figur 2 überein, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden.This flowchart is partially correct with the flowchart out Figure 2 agree, so that to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.

Nach dem Auftragen der Grundierung 3 und des Füllers 4 in den Schritten S1 und S2 wird in einem Schritt S3 die Basislackschicht 5 aufgetragen. Hierzu weist Lackieranlage eine separate Lackierkabine 9 auf, in der die Basislackschicht 5 von einem mehrachsigen Lackierroboter mit einem Rotationszerstäuber als Applikationsgerät aufgetragen wird.After applying the primer 3 and the filler 4 in steps S1 and S2, the basecoat layer 5 is applied in a step S3. For this purpose, the painting system has a separate painting booth 9, in which the basecoat layer 5 is applied by a multi-axis painting robot with a rotary atomizer as an application device.

Durch die Lackierkabine 1 verläuft hierbei entlang einer Lackierstraße ein Förderer 10, der Kraftfahrzeugkarosserien 11 in Pfeilrichtung durch die Lackieranlage fördert.A conveyor 10, which conveys motor vehicle bodies 11 through the paint shop in the direction of the arrow, runs through the paint booth 1 along a paint line.

In einem weiteren Schritt S4 wird die Basislackschicht 5 dann in einer Trocknungsstation 12 getrocknet.In a further step S4, the basecoat layer 5 is then dried in a drying station 12.

Anschließend wird dann in einem Schritt S5 das Muster 7 aufgetragen, was in einer weiteren Lackierkabine 13 erfolgt. Das Aufbringen des Musters 7 erfolgt hierbei ebenfalls durch einen mehrachsigen Lackierroboter, der ein Applikationsgerät trägt, das keinen Beschichtungsnebel erzeugt, sondern einen scharf abgegrenzten Beschichtungsmittelstrahl, wobei ein solches Applikationsgerät beispielsweise aus DE 10 2010 019 612 A1 bekannt ist.Subsequently, the pattern 7 is then applied in a step S5, which takes place in a further painting booth 13. The pattern 7 is also applied here by a multi-axis painting robot which carries an application device which does not produce a coating mist, but rather a sharply delimited coating agent jet, such an application device, for example, from DE 10 2010 019 612 A1 is known.

In einem Schritt S6 wird das Muster 7 dann in einer Trocknungsstation 14 getrocknet.In a step S6, the pattern 7 is then dried in a drying station 14.

Im Anschluss an das Trocknen des Musters 7 wird dann in einem Schritt S7 die Klarlackschicht 8 in einer weiteren Lackierkabine 15 aufgetragen.Following the drying of the pattern 7, the clear lacquer layer 8 is then applied in a further painting booth in a step S7 15 applied.

Schließlich wird die Klarlackschicht 8 dann in einem Schritt S8 in einer Einbrennstation 16 eingebrannt.Finally, the clear lacquer layer 8 is then baked in a baking station 16 in a step S8.

Die Figuren 5A und 5B zeigen eine Abwandlung des Ausführungsbeispiels gemäß den Figuren 4A und 4B, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden.The Figures 5A and 5B show a modification of the embodiment according to the Figures 4A and 4B , so that to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.

Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass anstelle der Trocknungsstation 12 eine Ablüftstation 12' vorgesehen ist.A special feature of this exemplary embodiment is that an exhausting station 12 ′ is provided instead of the drying station 12.

Das Ausführungsbeispiel gemäß den Figuren 6A und 6B stimmt ebenfalls mit den vorstehend beschriebenen Ausführungsbeispielen teilweise überein, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird.The embodiment according to the Figures 6A and 6B also partially agrees with the exemplary embodiments described above, so that reference is made to the above description in order to avoid repetition.

Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass anstelle der Trocknungsstation 14 in Figur 4B eine Ablüftstation 14' vorgesehen ist.A special feature of this exemplary embodiment is that instead of the drying station 14 in Figure 4B an exhaust station 14 'is provided.

Das Ausführungsbeispiel gemäß den Figuren 7A und 7B stimmt ebenfalls teilweise mit den vorstehend beschriebenen Ausführungsbeispielen überein, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden.The embodiment according to the Figures 7A and 7B also partially corresponds to the exemplary embodiments described above, so that reference is made to the above description in order to avoid repetition, the same reference numerals being used for corresponding details.

Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass das Muster 7 in einem Schritt S4 "nass-in-nass" auf die Basislackschicht 5 aufgetragen wird, wobei dies in einer gemeinsamen Lackierkabine 17 erfolgt.A special feature of this exemplary embodiment is that the pattern 7 "wet-on-wet" in a step S4 Basecoat layer 5 is applied, this being done in a common painting booth 17.

Schließlich stimmt auch das Ausführungsbeispiel gemäß den Figuren 8A und 8B teilweise mit den vorstehend beschriebenen Ausführungsbeispielen überein, so dass zur Vermeidung von Wiederholungen auf die vorstehende Beschreibung verwiesen wird, wobei für entsprechende Einzelheiten dieselben Bezugszeichen verwendet werden.Finally, the exemplary embodiment according to FIGS. 8A and 8B also partially corresponds to the exemplary embodiments described above, so that reference is made to the above description in order to avoid repetition, the same reference numerals being used for corresponding details.

Eine Besonderheit dieses Ausführungsbeispiels besteht darin, dass die Klarlackschicht 8, das Muster 7 und die Basislackschicht 5 in einem 3-wet-Prozess gemeinsam in derselben Lackierkabine 18 aufgetragen wird.A special feature of this exemplary embodiment is that the clear lacquer layer 8, the pattern 7 and the basecoat layer 5 are applied together in a 3-wet process in the same painting booth 18.

Bezugszeichenliste:Reference symbol list:

11
KraftfahrzeugkarosseriebauteilMotor vehicle body component
22nd
PhosphatschichtPhosphate layer
33rd
Grundierungprimer
44th
Füllerink pen
55
BasislackschichtBasecoat
66
KlarlackschichtClear coat
77
Mustertemplate
88th
KlarlackschichtClear coat
99
Lackierkabine für den BasislackPainting booth for the basecoat
1010th
FördererSponsor
1111
KraftfahrzeugkarosserieMotor vehicle body
1212th
Trocknungsstation für den BasislackDrying station for the basecoat
12'12 '
Ablüftstation für den BasislackFlash-off station for the basecoat
1313
Lackierkabine für das MusterPaint booth for the pattern
1414
Trocknungsstation für das MusterDrying station for the sample
14'14 '
Ablüftstation für das MusterFlash-off station for the sample
1515
Lackierkabine für den KlarlackPainting booth for the clear coat
1616
EinbrennstationBurning station
1717th
Lackierkabine für Nass-in-nass-Lackierung von Basislack und MusterPainting booth for wet-on-wet painting of basecoat and sample
1818th
Lackierkabine für 3-wet-ProzessPainting booth for 3-wet process

Claims (8)

  1. Painting method for painting a component (1), namely a motor vehicle bodywork (1), with the following steps:
    a) application of a base coat layer (5) onto the component (1),
    b) application of a pattern (7) onto the component (1), wherein the pattern (7)
    b1) is painted onto the component (1),
    b2) is applied onto the base coat layer (5) without an intermediate clear coat layer (6), and
    b3) is applied by an applicator which does not emit a coating agent mist but emits a narrowly delimited jet of coating agent, and
    c) application of a clear coat layer (8) onto the component (1),
    characterized in that
    d) the pattern is a partial area of the motor vehicle bodywork, namely a roof bar, wherein the roof bar shall be painted in a different colour than the rest of the motor vehicle bodywork.
  2. Painting method according to claim 1, characterized in that the pattern (7) is applied directly onto the base coat layer (5).
  3. Painting method according to any of the preceding claims, characterized by the following step:
    a) flash-drying of the base coat layer (5) after application of the base coat layer (5) and before application of the pattern (7), or
    b) intermediate drying of the base coat layer (5) after application of the base coat layer (5) and before application of the pattern (7).
  4. Painting method according to any of the preceding claims, characterized by the following step:
    a) flash-drying of the pattern (7) after application of the pattern (7) and before application of the clear coat layer (8), or
    b) intermediate drying of the pattern (7) after application of the pattern (7) and before application of the clear coat layer (8).
  5. Painting method according to any of the preceding claims, characterized in that the base coat layer (5) and the pattern (7) are applied wet-on-wet without intermediate drying.
  6. Painting method according to any of claims 1 to 4, characterized in that the base coat layer (5) and the pattern (7) and the clear coat layer (8) are applied wet-on-wet in a 3-wet process without intermediate drying.
  7. Painting method according to any of the preceding claims, characterized in that
    a) the base coat layer (5) and the pattern (7) are applied together in one paint booth (17) or in directly successive process steps, or
    b) the pattern (7) and the clear coat layer (8) are applied together in one paint booth or in directly successive process steps, or
    c) the base coat layer (5), the pattern (7) and the clear coat layer (8) are applied together in one paint booth (18) or in directly successive process steps, or
    d) the base coat layer (5) and the pattern (7) are applied in separate paint booths (9, 13, 15), or
    e) the pattern (7) and the clear coat layer (8) are applied in separate paint booths (13, 15).
  8. Painting method according to any of the preceding claims, characterized in that
    a) the base coat layer (5), the pattern (7) and the clear coat layer (8) are applied automatically by means of a multi-axis, freely programmable painting robot, and
    b) the base coat layer (5) and the pattern (7) and the clear coat layer (8) consist of wet paint.
EP14704522.3A 2013-02-11 2014-02-05 Painting method Active EP2953733B1 (en)

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DE102013002433.1A DE102013002433A1 (en) 2013-02-11 2013-02-11 Painting process and painting plant for decorative stripes
PCT/EP2014/000310 WO2014121927A1 (en) 2013-02-11 2014-02-05 Painting method and painting facility for producing decorative strips

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CN (2) CN104981300A (en)
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DE102014009945A1 (en) 2014-07-04 2016-01-07 Dürr Systems GmbH Painting process and paint shop for decorative painting
DE102015015090A1 (en) 2015-11-20 2017-05-24 Dürr Systems Ag Coating method and corresponding coating system
DE102015015092A1 (en) 2015-11-20 2017-05-24 Dürr Systems Ag Coating device and corresponding coating method
EP3305415B1 (en) * 2016-10-06 2021-04-28 Exel Industries Method and installation for painting a surface of a component with a pattern
DE102016014953A1 (en) * 2016-12-14 2018-06-14 Dürr Systems Ag Painting plant and corresponding painting process
DE102016014944A1 (en) 2016-12-14 2018-06-14 Dürr Systems Ag Coating method and corresponding coating device
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EP2953733A1 (en) 2015-12-16
DE102013002433A1 (en) 2014-08-14
ES2792918T3 (en) 2020-11-12
US20160001322A1 (en) 2016-01-07
US9744560B2 (en) 2017-08-29
CN104981300A (en) 2015-10-14
MX2015009920A (en) 2015-09-25

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