Method and apparatus for producing a decorative workpiece and workpiece
The inventions relates to a method for producing a decorative workpiece with a structured surface comprising the following steps: (B) applying a first liquid lacquer having a coarse structuring over the entire surface, wherein a difference in thickness between thicker regions and thinner regions is at least 50 μm, in particular at least 100 μm; (E) applying a second liquid, at least partially transparent lacquer for producing a fine structuring in some regions. Furthermore, an apparatus for performing the method and a workpiece produced by the method are claimed.
1. A workpiece, in particular a plate-like workpiece made of
a wooden workpiece, comprises a carrier material on which at least one decorative image is printed, and at least one layer of a first lacquer having a coarse structuring, in which a difference in thickness between thicker regions and thinner regions is at least 50 μm, in particular at least 100 μm, and at least one second lacquer layer comprising an at least partially transparent material having a fine structuring, in which a difference in thickness is less than 50 μm, in particular less than 30 μm.
2. The workpiece according to claim 1 , wherein
the workpiece comprises the first lacquer layer having the coarse structuring applied over the entire surface; and
the workpiece comprises the second liquid, at least partially transparent, lacquer layer applied in some regions for producing the fine structuring.
3. The workpiece according to claim 2 , wherein
a gloss level in the region of the fine structuring is different by at least 10 gloss units as compared to the gloss level in the region of the coarse structuring.
4. The workpiece according to claim 1 , wherein
the first lacquer is applied by means of at least one printing roller which unrolls on a surface of the workpiece, and/or in that
the workpiece is fed to a coating station, and/or in that
the applied first lacquer is at least partial cured, and/or in that
the second lacquer is cured, wherein
the difference in thickness in the region of fine structuring on the second lacquer layer is less than 50 μm, in particular less than 30 μm.
5. The workpiece according to claim 1 , wherein
the second lacquer is applied by means of at least one digital print head.
6. The workpiece according to claim 1 , wherein
the material for the first and the second lacquer is identical.
7. The workpiece according to claim 1 , wherein
the workpiece comprises a liquid lacquer first applied to produce the second lacquer layer and then lacquer droplets of the second lacquer layer sprayed into the still liquid material to produce a fine structuring.
8. The workpiece according to claim 7 , wherein
the lacquer droplets are made of the same material as the liquid layer.
9. The workpiece according to claim 7 , wherein
each lacquer droplet applied onto the still liquid lacquer layer by means of digital print heads has a volume of less than 10 pL, and the velocity of each lacquer droplet upon impact on the still liquid lacquer layer is greater than 1 m/sec.
10. The workpiece according to claim 7 , wherein
the lacquer droplets consist of a material other than the liquid lacquer and undergo a chemical reaction with the liquid lacquer after impact, which changes the surface optically and/or haptically at the respective locations.
11. The workpiece according to claim 7 , wherein
the lacquer droplets consist of a different material than the liquid lacquer and after a physical reaction due to the impact on the liquid lacquer they volatilize within less than 5 minutes by evaporation.
12. The workpiece according to claim 1 , wherein
the workpiece comprises at least one intermediate layer applied between the workpiece and the first lacquer layer, and/or in that
the workpiece comprises the decorative image applied by multicolour printing before the first liquid lacquer having the coarse structuring is applied over the entire surface or after the applied first lacquer is at least partial cured.
13. The workpiece according to claim 1 , wherein
the first lacquer layer has a layer thickness of between 100 and 500 μm, and/or in that
the second lacquer layer has a layer thickness between 10 and 100 μm.
14. The workpiece according to claim 1 , wherein the fine structuring is arranged congruently with the decorative image of the workpiece, wherein the application or generation of the fine structure is performed by a digital print head.