EP3444041B1 - Method for producing a window or door profile - Google Patents

Method for producing a window or door profile Download PDF

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Publication number
EP3444041B1
EP3444041B1 EP18187210.2A EP18187210A EP3444041B1 EP 3444041 B1 EP3444041 B1 EP 3444041B1 EP 18187210 A EP18187210 A EP 18187210A EP 3444041 B1 EP3444041 B1 EP 3444041B1
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EP
European Patent Office
Prior art keywords
profile
window
ink drops
edge
door profile
Prior art date
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Active
Application number
EP18187210.2A
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German (de)
French (fr)
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EP3444041A1 (en
Inventor
Herbert Hochreiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFN Holding AG
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IFN Holding AG
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Publication date
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Publication of EP3444041A1 publication Critical patent/EP3444041A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/30—Coverings, e.g. protecting against weather, for decorative purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing

Definitions

  • the invention relates to a method for producing a window or door profile according to which a decorative pattern is generated from color drops by means of digital printing on at least one surface of the window or door profile.
  • the invention further relates to a window or door profile with a base body which has a decorative pattern on at least one surface, which is produced by a printing process on the surface of the base body.
  • the present invention has for its object to provide a way with which the print image of window or door profiles printed by means of a digital printing process can be improved.
  • the ink drops are up to a distance from an edge of the window or Door profile in a first direction, in particular vertically, are printed on the surface of the window or door profile and that the ink drops are printed in the area of the surface defined by the distance from the edge in a second direction, which is different from the first direction, in particular is weird.
  • the object of the invention is achieved with the window or door profile mentioned at the beginning, in which a layer thickness of the decorative pattern in the region of at least one edge of the base body is smaller than the layer thickness of the decorative pattern in a region adjoining this region.
  • this procedure can be used to produce a printed image, that is to say the decorative pattern, on the surface which has fewer or no “blurred” areas.
  • the sharpness of the printed decorative pattern can be improved.
  • this can be achieved by the fact that less color gets beyond the edge into other surface areas of the window or door profile, in which the decorative pattern produced with it should have a different appearance.
  • This "overprinting" of the edge is due to tolerances of the window or door profile, as a result of which edges of the window or door profile do not run exactly parallel to the printing direction. So if the edge jumps back slightly, it will be overprinted, so that drops of color get into areas that should not belong.
  • Color inaccuracies or printing inaccuracies can thus be avoided.
  • this can avoid a coarsening of the printed image in certain areas, which is triggered by the fact that ink drops that inadvertently reach the edge cover a longer path before they hit a surface and thus spread apart when they hit the surface.
  • the ink drops are preferably printed in several steps, the ink drops being printed on the surface in the first direction in a first step, and in a further step following the first step the direction of flight of the ink drops compared to the direction of flight of the ink drops in the first step so that the drops of paint hit the surface of the window or door profile in the area of the edge in the second direction in the second direction in the first step.
  • the control of the printing process in particular the print heads of the printing device, can be formed more easily since the direction of flight of the ink fountains does not have to be changed within one step, but the printing is divided into several steps and the direction of flight can be left unchanged within one step.
  • the color drops are applied in the second step at an angle to the surface of the window or door profile, which is selected from a range from 20 ° to 70 °.
  • an angle from this area it can be achieved more easily and with greater certainty that the paint drops on the one hand spread far enough in the direction of the edge of the base body, without however providing areas with a substantial amount of paint that are not with the respective paint drops should be printed.
  • the distance to the edge is at least as large as the permissible deviation of the actual dimensions of the window or door profile from the target dimensions. It is thus possible to include the tolerances that the window or door profile has in the print image without the print image itself, that is to say the decorative pattern, being excessively disturbed thereby. This makes it easier to take tolerances into account when printing. This means that the printout can also be smoothly run out.
  • the paint drops which are applied to the surface of the window or door profile in the first step are only partially dried or hardened, so that mixing takes place with the paint drops of the second step.
  • the ink drops that are printed on the window or door profile in the area of the edge already begin to mix with those already on the surface of the window or door profile so that they are better stick in the edge area. This makes it easier to prevent the color from running off the edge.
  • a more true-to-color representation of the decorative pattern can thus be achieved, since the color drops of the layers of color drops printed on top of one another are allowed to mix over a longer period of time and thus to form mixed colors.
  • the window or door profile is produced using an extrusion process, the window or door profile is then calibrated and that the first step is carried out immediately after the calibration of the window or door profile.
  • the still warm profile is printed.
  • a corresponding shortening of the process can thus be achieved, since the residual heat of the profile can at least partially be used for (partial drying or (partial) hardening of the paint drops.
  • a more detailed design of the decorative pattern can be achieved since the paint drops settle on the profile surface widen less when hitting them.
  • the distance of the nozzles from which the paint drops emerge from the surface of the window or door profile is between 1 mm and 20 mm. By maintaining this distance, it is also easier to avoid printing beyond the above-mentioned edge of the base body, but printing the entire surface of the unprinted surface immediately adjacent to the edge. The quality of the printed decorative pattern can thus be further increased.
  • the layer thickness of the decorative pattern in the surface area immediately adjacent to the edge mentioned can be less than in the remaining area, it can be advantageous if a higher color saturation is generated in the area not printed in the first step than in the area printed in the first step areas.
  • the quality of the printed decorative pattern can also be further improved with this embodiment variant.
  • Fig. 1 shows a section of a window or door profile 1 in cross section.
  • the window or door profile 1 is a hollow chamber profile 2 which has at least one hollow chamber 3, preferably a plurality of hollow chambers 3 separated from one another by webs 4.
  • the hollow chamber profile 2 consists of a plastic, for example PVC, or comprises at least one plastic.
  • the latter means that the hollow chamber profile 2 can also consist of a WPC (Wood Plastic Composite).
  • the hollow chamber profile 2 may consist of a metal.
  • the design of the window or door profile 1 as a hollow chamber profile 2 made of plastic is the preferred embodiment variant, this can also be carried out differently.
  • it can consist of another material, such as wood, and / or it can be a profile without hollow chambers 3.
  • a wooden profile is given a different decor, in particular a different grain, since in this case cheaper types of wood can be imitated, which means that not only costs can be saved, but also more environmentally friendly production of Windows or doors can be made, for example, by not having to use tropical woods, but working with local woods.
  • the window or door profile 1 has a base body 5, on which a decorative pattern 7 is arranged or formed on at least one surface 6.
  • the decorative pattern 7 is generated on the surface 6 by means of a digital printing process. There are therefore no restrictions with regard to the optical design of the decorative pattern 7, since in principle any decorative pattern 7 can be produced by means of digital printing.
  • An inkjet printer is preferably used to produce the decorative pattern 7.
  • the latter sprays ink drops 10 from a print head 8 with at least one nozzle 9 onto the surface 6 of the base body 5.
  • inkjet printers are also known from the prior art, reference is made to the relevant prior art for further explanations, such as with regard to the generation of the ink drops 10 by means of CIJ (Continuous Ink Jet) or DOD (Drop On Demand), the controller of the at least one print head 8 with the at least one nozzle 9, the control of the trajectory of the ink drops 10, etc.
  • CIJ Continuous Ink Jet
  • DOD Drop On Demand
  • colors are used for color printing in digital printing processes, namely the color tones cyan, magenta, yellow and the key color black (corresponding to the CMYK color model).
  • the colors can be pigment-based or dye-based.
  • so-called light colors can also be used. This makes pastel colors easier to produce.
  • the individual colors can be printed one after the other or simultaneously. If they are printed one after the other, printing is preferably carried out with the window or door profile 1 at a standstill and with a movable print head 8.
  • the printing is preferably carried out in a single-pass process with a plurality of print heads, which can be arranged one behind the other in the printing direction.
  • Inkjet printers are preferably used which have a plurality of print heads 8 and a plurality of nozzles 9 per print head 8, it being further preferred if at least one print head 8 is present per color.
  • the ink drops 8 with the different colors are successively printed on the surface 6.
  • the ink drops 8 are not completely printed up to an edge 11, but the printing is interrupted in the first step when a distance 12 from the edge 11 is reached, so that the ink drops 8 of the first step are at least in the Distance 12 from the edge 11 are.
  • the edge 11 is not a side edge of the base body 5 of the window or door profile 1, but rather an edge which is formed in the course of the surface 7, for example by the formation of a fold which e.g. can serve as a stop.
  • the edge 11 is thus formed between two regions of the surface 6 which run in different directions, for example at least approximately horizontally, as in the left part of the figure Fig. 1 , and at least approximately vertically, as in the subsequent part of the Fig. 1 ,
  • the edge 11 can thus arise, for example, by forming a depression 13 in the surface 6.
  • the printing on the surface 6 or generally the visible surfaces of the window or door profile 1 can be carried out in accordance with this description, that is to say that the direction of flight of the ink drops 8 is changed in one or more edge regions, that is to say not only in the region the too Fig. 1 described edge 11.
  • the statements in this description can also be used for these further edges of the window or door profile 1, for example also side edges, for example with regard to the distance 12.
  • the printing on the surface 6 is interrupted in this embodiment variant of the method.
  • a second step of the method that follows the first step, the area of the surface 6 that is not printed in the first step and immediately adjoins the edge 11 is printed.
  • the direction with which the ink drops 10 strike the surface 6 is changed.
  • the print head 8 is placed at an angle, as shown in Fig. 2 is shown, so that the ink drops 10 also strike the surface at an angle.
  • the printing direction itself that is to say the feed direction of the print head 8, remains unchanged. It is therefore printed in the direction of the course of the edge 11, ie in the longitudinal direction of the window or door profile 1. In other words, the edge 11 runs in the printing direction. (In the 1 and 2 the print direction is perpendicular to the paper plane.)
  • the individual ink drops 8 spread out more oval (in the printing direction) on the surface 6 compared to the vertical direction, so that the print head 8 can remain further away from the edge 11 and still paint up comes to edge 11.
  • a decorative pattern 7 is formed on the surface 6 of the window or door profile 1, which has a layer thickness 14 that at least covers an area 15 an edge 11 of the base body 5 is smaller than in an area 16 adjoining this area 15, as is the case with Fig. 2 can be seen.
  • less ink gets into the area 17 after the edge 11 (based on the printing direction).
  • the indication "less” refers to the amount of color compared to printing the surface vertically from above.
  • the reason why color arrives in the area 17 after the edge 11 is that the basic body 5 does not have the desired dimension due to the production, but rather the actual dimension is or can be provided with permissible tolerances. Because of these tolerances, the edge 11 may not run exactly parallel to the printing direction. The color originating from the area 16 in the area 17 in turn leads to inaccuracies or blurring of the decorative pattern 7. This can be avoided or this effect reduced with the method or methods described in this description.
  • the decorative pattern 7 extends over the entire surface 6 or over all visible surfaces of the base body 5 of the window or door profile 1. It is therefore not only partial areas of the surface (s) 6 that are printed entirely.
  • the ink drops 10 are only printed on the surface in one layer.
  • the area 16 already printed in the first step it is also possible for the area 16 already printed in the first step to be overprinted again in the second step, in particular also with the inclined print head 8.
  • the decorative pattern 7 can be produced from a plurality of layers of ink drops 10 printed one above the other, at least a layer is printed at least in the area immediately after the edge 11, that is to say in the area 15, with an oblique trajectory of the ink drops 10 (in the above sense).
  • Fig. 3 Another embodiment variant of the second step of printing on the window or door profile 1 is shown. Again, the print head 8 is set with the nozzles 9 at an angle to the surface 6 of the window or door profile 1. The direction of flight of the color drops 10 is different from the direction of flight of the color drops 10 in the first step. Unlike the in Fig. 2 In the embodiment variant shown, the print head 8 is now inclined in the other direction, ie not in the direction of the printed surface 6 but away from it in the direction of the area 17 of the window or door profile 1
  • Fig. 3 it is also indicated by dashed lines that the area 17 adjoining the area 15 printed in the second step can also be printed. Provision can be made for the area 16 and the area 17 to be printed in the first step and for the area 15, which is still unprinted around the edge 11, to be printed with the inclined nozzles 9, as a result of which the "gap" between the two already exists printed areas 16, 17 is closed.
  • the printhead 8 or the printheads 8 for printing on the area 15 immediately adjacent to the edge 11 can also be provided that only the trajectory itself of the ink drops 10 is changed, so that the ink drops 10 strike the surface 6 of the base body 5 at an angle.
  • this can be achieved with the aid of an electrical field through which the ink drops 10 must pass during printing, provided an electrically conductive ink or paint is used.
  • the ink drops 10 can be deflected more or less from their original trajectory, depending on the strength of the electric field. Other physical effects can also be used or exploited for this purpose.
  • the invention thus generally proposes a method for producing a window or door profile 1, according to which the decorative pattern 7 is generated on at least the surface 6 of the window or door profile 1 by means of digital printing from color drops 10, the color drops 10 up to the distance 12 from the edge 11 of the window or door profile 1 running in the printing direction is printed on the surface of the window or door profile 1 in a first direction, in particular perpendicularly, and the ink drops 10 are printed on the surface by the distance 12 region of the surface 6 defined by the edge 11 are printed in a second direction, which is different from the first direction, in particular is oblique.
  • the printing direction may run perpendicular to the edge 11, for example in Fig. 2 left to right.
  • the printing direction in the longitudinal direction of the window or door profile 1 is preferred, however, since the method can thus be better embedded in the production line for a fixed or door profile 1.
  • the overprinting can be avoided or reduced, so that no or less ink, which for the area 15 that immediately adjoins the edge 11, reaches the second area 17 directly adjoining the edge 11.
  • a basic color can be used for the individual layers, for example one of the colors of the CMYK color scheme.
  • an adhesion promoter which can also be printed on, if necessary, for example with an inkjet printer.
  • the decorative pattern 7 is still completely overprinted with a transparent protective lacquer and / or with a transparent gloss lacquer, in order to be able to better protect the decorative pattern 7 from the weather.
  • the color drops 10 are applied in the second step at an angle 18 to the surface 6 of the window or door profile 1, which is selected from a range from 20 ° to 70 °, in particular from a range between 30 ° and 60 °.
  • the angle 18 is the angle which the trajectory of the ink drops 10 or the longitudinal central axis of the print head 8 enclose with the surface 6, as is evident from this Fig. 2 can be seen.
  • angle 18 is between 110 ° and 160 °, in particular between 120 ° and 150 °, it is therefore complementary to the above-mentioned angle 18.
  • the method can also be used to mitigate or completely prevent tolerance-related errors of the window or door profile 1 with regard to their influence on the decorative pattern 7 printed on the surface 6 of the window or door profile 1.
  • the distance 12 to the edge 11 is at least as large as the permissible deviation of the actual dimensions of the window or door profile 1 from the target dimensions.
  • the distance 12 can be at least between 0.5 mm and 2 mm.
  • the width of the print in the second step is preferably selected so that the first step prints slightly overlapping in the visible areas and, depending on the tolerance situation, the area running over the edge becomes wider or narrower. Since the tolerance of the window or door profile 1 changes little over the profile course, this edge is relatively equal to the edge 11 and thus makes a nice picture. If required, a smooth discharge can also be achieved here by running out the printed image.
  • the paint drops 10, which are applied to the surface of the window or door profile 1 in the first step are only partially dried or hardened, so that mixing takes place with the paint drops 10 of the second step as soon as they are on the first layer can be printed on ink drops 10. Partial curing can take place, for example, by means of UV light or by only partially removing the solvent from the inks.
  • the window or door profile 1 is preferably a plastic profile. These are usually produced using an extrusion process.
  • the printing device ie at least the print head 8 or the print heads 8, can also be integrated into the production line for the profiles by: or it is arranged according to a calibration level for the profiles. The printing can thus at least partially take place immediately after the calibration.
  • a distance 19 of the nozzles 9, from which the paint drops 10 emerge, from the surface 6 of the window or door profile 1 can be between 1 mm and 20 mm, in particular between 1 mm and 8 mm.
  • This distance 19 denotes the distance of the surface 6 in the extension of the inclined nozzles 9, as shown in FIG Fig. 2 is shown. If the nozzles 9 are placed vertically on the surface, the distance of the nozzles from the surface can be between 1 mm and 2 mm.
  • a higher color saturation is generated in the area 15 which is not printed in the first step or generally the obliquely printed area than in the areas Areas printed in the first step 16. This can be determined mathematically by changing the mixture of the number of ink drops accordingly or can be controlled with a PC.
  • the changed distance of the nozzle (s) 9 from the surface 6, which results from the change in direction of the trajectory of the ink drops 10, is also taken into account arithmetically with a corresponding program of a PC, in order to ensure the quality of the printed image, that is to say the decorative pattern 7, continue to improve.
  • the size of the distance 12 from the edge 11 can be stored accordingly in a PC, so that in the process, the PC or generally a computer is used to determine on the basis of the software when printing for a particular profile, i.e. a certain profile cross section, the distance 12 is reached.
  • the distance 12 from the edge 11 is continuously determined during printing, for example by means of a camera, and on the basis of this data the time for the change in the direction of flight of the ink drops 10 is determined in the above sense.
  • the area 15 may be covered around the edge 11, for example with a seal.
  • the print image i.e. the decorative pattern are distorted, since the real surface is now extended in accordance with the angle of attack (angle 18) of the printhead 8 or the nozzle (s) 9 and thus the ink applied from the printhead 8 or the nozzle (s) 9 is compressed Image prints.
  • the exemplary embodiments show or describe possible design variants, it being noted at this point that various combinations of the individual design variants with one another are also possible.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Ink Jet (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Fenster- oder Türprofils nach dem auf zumindest einer Oberfläche des Fenster- oder Türprofils ein Dekormuster mittels Digitaldruck aus Farbtropfen erzeugt wird.The invention relates to a method for producing a window or door profile according to which a decorative pattern is generated from color drops by means of digital printing on at least one surface of the window or door profile.

Weiter betrifft die Erfindung ein Fenster- oder Türprofil mit einem Grundkörper, der auf zumindest einer Oberfläche ein Dekormuster aufweist, das nach einem Druckverfahren auf der Oberfläche des Grundkörpers hergestellt ist.The invention further relates to a window or door profile with a base body which has a decorative pattern on at least one surface, which is produced by a printing process on the surface of the base body.

Im Wesentlichen werden heute Profile für Fenster oder Türen aus Holz, Metall oder Kunststoff hergestellt. Für viele Menschen ist Holz noch immer der Wertigste Werkstoff, sodass die Fenster- und Türenindustrie versucht, Holzoberflächen auf Metallen oder Kunststoffen zu imitieren. Dazu kann auf die Metalloberfläche oder die Kunststoffoberfläche eine Dekorfolie aufgebracht werden. Dies ist jedoch aufwändig und aufgrund der komplexen Geometrien der Profile u.U. relativ schwierig.Today, profiles for windows or doors are essentially made of wood, metal or plastic. For many people, wood is still the most valuable material, so the window and door industry tries to imitate wood surfaces on metals or plastics. For this purpose, a decorative film can be applied to the metal surface or the plastic surface. However, this is complex and, due to the complex geometries of the profiles, relatively difficult.

Aus der US 2001/049010 ist ein Verfahren und eine Vorrichtung zum Bedrucken von länglichen Profilen mit einer polychromen Dekoration entsprechend den Merkmalen im Oberbegriff des Anspruches 1 und 8 bekannt.From the US 2001/049010 is a method and an apparatus for printing elongated profiles with a polychrome decoration according to the features in the preamble of claims 1 and 8 known.

Aus der WO 2007/131754 A1 ist ein Verfahren zum Bedrucken von Fensterprofilen aus Kunststoff mit einem Dekor bekannt, nach dem eine Dekorvorlage in Echtfarben-Teilbilder zerlegt wird, die überlagert das Dekor ergeben, und die Teilbilder mit den bereitgestellten Farben auf das Substrat gedruckt werden, z.B. mittels Tintenstrahldruck, wodurch das gedruckte Dekor auf dem Substrat entsteht. Es sollen damit Fensterprofile auch in Kleinserien mit geringen Aufwand mit einer farbgetreuen Wiedergabe von Dekorvorlagen bedruckt werden können.From the WO 2007/131754 A1 A method for printing window profiles made of plastic with a decor is known, according to which a decor template is broken down into true-color partial images, which result in a superimposed pattern, and the partial images are printed on the substrate with the colors provided, for example by means of inkjet printing, as a result of which printed decor is created on the substrate. It should be possible to print window profiles in small series with little effort with a true-to-color reproduction of decor templates.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Möglichkeit zu schaffen, mit der das Druckbild von mittels einem Digitaldruckverfahren bedruckten Fenster- oder Türprofilen verbessert werden kann.The present invention has for its object to provide a way with which the print image of window or door profiles printed by means of a digital printing process can be improved.

Diese Aufgabe wird mit dem eingangs genannten Verfahren dadurch gelöst, dass die Farbtropfen bis zu einem Abstand von einer in Druckrichtung verlaufenden Kante des Fenster- oder Türprofils in einer ersten Richtung, insbesondere senkrecht, auf die Oberfläche des Fenster- oder Türprofils aufgedruckt werden und dass die Farbtropfen in dem durch den Abstand von der Kante definierten Bereich der Oberfläche in einer zweiten Richtung aufgedruckt werden, die zur ersten Richtung verschieden ist, insbesondere schräg ist.This object is achieved with the method mentioned at the outset in that the ink drops are up to a distance from an edge of the window or Door profile in a first direction, in particular vertically, are printed on the surface of the window or door profile and that the ink drops are printed in the area of the surface defined by the distance from the edge in a second direction, which is different from the first direction, in particular is weird.

Weiter wird die Aufgab der Erfindung mit dem eingangs genannten Fenster- oder Türprofil gelöst, bei dem eine Schichtdicke des Dekormusters im Bereich von zumindest einer Kante des Grundkörpers kleiner ist, als die Schichtdicke des Dekormusters in einem an diesen Bereich anschließenden Bereich.Furthermore, the object of the invention is achieved with the window or door profile mentioned at the beginning, in which a layer thickness of the decorative pattern in the region of at least one edge of the base body is smaller than the layer thickness of the decorative pattern in a region adjoining this region.

Von Vorteil ist dabei, dass mit dieser Verfahrensweise ein Druckbild, also das Dekormuster, auf der Oberfläche erzeugt werden kann, das weniger bzw. keine "verschwommenen" Bereiche aufweist. Mit anderen Worten kann damit die Schärfe des gedruckten Dekormusters verbessert werden. Dies kann einerseits dadurch erreicht werden, dass weniger Farbe über die Kante hinaus in andere Oberflächenbereiche des Fenster- oder Türprofils gelangt, in denen das damit erzeugte Dekormuster ein anderes Aussehen haben soll. Dies "Überdrucken" der Kante ist durch Toleranzen des Fenster- oder Türprofils bedingt, wodurch Kanten des Fenster-oder Türprofils nicht genau parallel zur Druckrichtung verlaufen. Springt also die Kante geringfügig zurück, wird sie überdruckt, sodass Farbtropfen in Bereiche gelangen, in die sich nicht hingehören. Es können also Farbungenauigkeiten bzw. Druckbildungenauigkeiten vermieden werden. Darüber hinaus kann damit eine bereichsweise Vergröberung des Druckbildes vermieden werden, die dadurch ausgelöst wird, dass Farbtropfen, die unabsichtlich teilweise über die Kante hinausgelangen, einen längeren Weg zurücklegen, bevor sie auf eine Oberfläche auftreffen und dadurch beim Auftreffen auf die Oberfläche weiter auseinanderspreiten.The advantage here is that this procedure can be used to produce a printed image, that is to say the decorative pattern, on the surface which has fewer or no “blurred” areas. In other words, the sharpness of the printed decorative pattern can be improved. On the one hand, this can be achieved by the fact that less color gets beyond the edge into other surface areas of the window or door profile, in which the decorative pattern produced with it should have a different appearance. This "overprinting" of the edge is due to tolerances of the window or door profile, as a result of which edges of the window or door profile do not run exactly parallel to the printing direction. So if the edge jumps back slightly, it will be overprinted, so that drops of color get into areas that should not belong. Color inaccuracies or printing inaccuracies can thus be avoided. In addition, this can avoid a coarsening of the printed image in certain areas, which is triggered by the fact that ink drops that inadvertently reach the edge cover a longer path before they hit a surface and thus spread apart when they hit the surface.

Vorzugsweise werden die Farbtropfen in mehreren Schritten aufgedruckt, wobei in einem ersten Schritt die Farbtropfen mit der ersten Richtung auf die Oberfläche aufgedruckt werden, und in einem auf den ersten Schritt folgenden weiteren Schritt die Flugrichtung der Farbtropfen im Vergleich zur Flugrichtung der Farbtropfen im ersten Schritt verändert wird, sodass die Farbtropfen im zweiten Schritt in der zweiten Richtung auf die im ersten Schritt nichtbedruckte Oberfläche des Fenster- oder Türprofils im Bereich der Kante auftreffen. Es ist damit die Steuerung des Druckverfahrens, insbesondere der Druckköpfe der Druckvorrichtung, einfacher ausbildbar, da die Flugrichtung der Farbtopfen nicht innerhalb eines Schrittes verändert werden muss, sondern das Bedrucken auf mehrere Schritte aufgeteilt wird und die Flugrichtung innerhalb eines Schrittes unverändert gelassen werden kann.The ink drops are preferably printed in several steps, the ink drops being printed on the surface in the first direction in a first step, and in a further step following the first step the direction of flight of the ink drops compared to the direction of flight of the ink drops in the first step so that the drops of paint hit the surface of the window or door profile in the area of the edge in the second direction in the second direction in the first step. It is with it the control of the printing process, in particular the print heads of the printing device, can be formed more easily since the direction of flight of the ink fountains does not have to be changed within one step, but the printing is divided into several steps and the direction of flight can be left unchanged within one step.

Nach einer Ausführungsvariante des Verfahrens kann vorgesehen sein, dass die Farbtropfen im zweiten Schritt mit einem Winkel auf die Oberfläche des Fenster- oder Türprofils aufgebracht werden, der ausgewählt ist aus einem Bereich von 20 ° bis 70 °. Insbesondere mit einem Winkel aus diesem Bereich kann einfacher und mit höherer Sicherheit erreicht werden, dass die Farbtropfen einerseits in Richtung auf die Kante des Grundkörpers weit genug spreiten, ohne dabei jedoch Stellen mit einer wesentlichen Menge an Farbe zu versehen, die mit dem jeweiligen Farbtropfen nicht bedruckt werden sollen.According to an embodiment variant of the method, it can be provided that the color drops are applied in the second step at an angle to the surface of the window or door profile, which is selected from a range from 20 ° to 70 °. In particular with an angle from this area, it can be achieved more easily and with greater certainty that the paint drops on the one hand spread far enough in the direction of the edge of the base body, without however providing areas with a substantial amount of paint that are not with the respective paint drops should be printed.

Gemäß dem erfinderischen Verfahren ist vorgesehen, dass der Abstand zur Kante zumindest so groß ist, wie die zulässige Abweichung der Ist-Abmessungen des Fenster- oder Türprofils von den Soll-Abmessungen. Es ist damit möglich, die Toleranzen, die das Fenster-oder Türprofil aufweist, in das Druckbild miteinzubeziehen, ohne dass dadurch das Druckbild an sich, also das Dekormuster, übermäßig gestört wird. Es ist damit besser möglich, Toleranzen beim Drucken zu berücksichtigen. Es kann damit auch über das Auslaufen des Druckbildes ein sanfter Auslauf realisiert werden.According to the inventive method, it is provided that the distance to the edge is at least as large as the permissible deviation of the actual dimensions of the window or door profile from the target dimensions. It is thus possible to include the tolerances that the window or door profile has in the print image without the print image itself, that is to say the decorative pattern, being excessively disturbed thereby. This makes it easier to take tolerances into account when printing. This means that the printout can also be smoothly run out.

Es kann weiter vorgesehen sein, dass die Farbtropfen, die im ersten Schritt auf die Oberfläche des Fenster- oder Türprofils aufgebracht werden, nur teilweise getrocknet oder gehärtet werden, sodass mit den Farbtropfen des zweiten Schrittes eine Vermischung stattfindet. Mit dieser Verfahrensvariante kann erreicht werden, dass die Farbtropfen, die im Bereich der Kante auf das Fenster- oder Türprofil aufgedruckt werden, sich bereits unmittelbar nach dem Aufdrucken mit den bereits auf der Oberfläche des Fenster- oder Türprofils beginnen sich zu vermischen, sodass sie besser im Kantenbereich haften bleiben. Das Verlaufen der Farbe über die Kante hinaus kann damit besser vermieden werden. Generell kann damit auch eine farbgetreuere Darstellung des Dekormusters erreicht werden, da den Farbtropfen der übereinander gedruckten Schichten aus Farbtropfen über einen längeren Zeitraum erlaubt wird, sich zu vermischen und damit Mischfarben auszubilden.It can further be provided that the paint drops which are applied to the surface of the window or door profile in the first step are only partially dried or hardened, so that mixing takes place with the paint drops of the second step. With this variant of the method it can be achieved that the ink drops that are printed on the window or door profile in the area of the edge already begin to mix with those already on the surface of the window or door profile so that they are better stick in the edge area. This makes it easier to prevent the color from running off the edge. In general, a more true-to-color representation of the decorative pattern can thus be achieved, since the color drops of the layers of color drops printed on top of one another are allowed to mix over a longer period of time and thus to form mixed colors.

Nach einer anderen Ausführungsvariante des Verfahrens kann vorgesehen werden, dass das Fenster- oder Türprofil mit einem Extrusionsverfahren hergestellt wird, das Fenster- oder Türprofil danach kalibriert wird und dass der erste Schritt unmittelbar nach der Kalibrierung des Fenster- oder Türprofil durchgeführt wird. Es kann also mit dieser Ausführungsvariante vorgesehen werden, dass das noch warme Profil bedruckt wird. Damit ist eine entsprechende Verfahrensverkürzung erreichbar, da die Restwärme des Profils zumindest teilweise zur (Teil-Trocknung bzw. (Teil-)Härtung der Farbtropfen ausgenutzt werden kann. Zudem kann damit eine detailgetreuere Ausbildung des Dekormusters erreicht werden, da die Farbtropfen sich auf der Profiloberfläche beim Auftreffen auf diese weniger stark verbreitern.According to another embodiment variant of the method, it can be provided that the window or door profile is produced using an extrusion process, the window or door profile is then calibrated and that the first step is carried out immediately after the calibration of the window or door profile. With this embodiment variant it can therefore be provided that the still warm profile is printed. A corresponding shortening of the process can thus be achieved, since the residual heat of the profile can at least partially be used for (partial drying or (partial) hardening of the paint drops. In addition, a more detailed design of the decorative pattern can be achieved since the paint drops settle on the profile surface widen less when hitting them.

Es kann auch vorgesehen werden, dass ein Abstand der Düsen, aus denen die Farbtropfen austreten, von der Oberfläche des Fenster- oder Türprofils zwischen 1 mm und 20 mm beträgt. Mit der Einhaltung dieses Abstandes kann ebenfalls einfacher vermieden werden, dass über die voranstehend genannte Kante des Grundkörpers hinausgedruckt wird, die an die Kante unmittelbar anschließende unbedruckte Fläche von den Farbtropfen jedoch vollflächig bedruckt wird. Die Qualität des gedruckten Dekormusters kann damit weiter gesteigert werden.It can also be provided that the distance of the nozzles from which the paint drops emerge from the surface of the window or door profile is between 1 mm and 20 mm. By maintaining this distance, it is also easier to avoid printing beyond the above-mentioned edge of the base body, but printing the entire surface of the unprinted surface immediately adjacent to the edge. The quality of the printed decorative pattern can thus be further increased.

Nachdem im unmittelbar an die genannte Kante anschließenden Oberflächenbereich die Schichtdicke des Dekormusters geringer sein kann, als in der restlichen Fläche, kann es von Vorteil sein, wenn in dem im ersten Schritt nichtbedruckten Bereich eine höhere Farbsättigung erzeugt wird, als in den im ersten Schritt bedruckten Bereichen. Auch mit dieser Ausführungsvariante kann die Qualität des gedruckten Dekormusters weiter verbessert werden.Since the layer thickness of the decorative pattern in the surface area immediately adjacent to the edge mentioned can be less than in the remaining area, it can be advantageous if a higher color saturation is generated in the area not printed in the first step than in the area printed in the first step areas. The quality of the printed decorative pattern can also be further improved with this embodiment variant.

Zum besseren Verständnis der Erfindung wird diese anhand der nachfolgenden Figuren näher erläutert.For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

Es zeigen jeweils in vereinfachter, schematischer Darstellung:

Fig. 1
den ersten Schritt des Bedruckens einer Oberfläche eines Fenster- oder Türprofils;
Fig. 2
den zweiten Schritt des Bedruckens einer Oberfläche eines Fenster- oder Türprofils
Fig. 3
den zweiten Schritt des Bedruckens einer Oberfläche eines Fenster- oder Türprofils gemäß einer Ausführungsvariante.
Each shows in a simplified, schematic representation:
Fig. 1
the first step of printing on a surface of a window or door profile;
Fig. 2
the second step of printing on a surface of a window or door profile
Fig. 3
the second step of printing on a surface of a window or door profile according to an embodiment variant.

Einführend sei festgehalten, dass in den unterschiedlich beschriebenen Ausführungsformen gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen versehen werden, wobei die in der gesamten Beschreibung enthaltenen Offenbarungen sinngemäß auf gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen übertragen werden können. Auch sind die in der Beschreibung gewählten Lageangaben, wie z.B. oben, unten, seitlich usw. auf die unmittelbar beschriebene sowie dargestellte Figur bezogen und sind diese Lageangaben bei einer Lageänderung sinngemäß auf die neue Lage zu übertragen.In the introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numbers or the same component names. The location information selected in the description, e.g. above, below, to the side, etc., referring to the figure described and illustrated immediately, and if the position is changed, these are to be applied accordingly to the new position.

Fig. 1 zeigt einen Ausschnitt aus einem Fenster- oder Türprofil 1 im Querschnitt. Fig. 1 shows a section of a window or door profile 1 in cross section.

In der dargestellten Ausführungsvariante ist das Fenster- oder Türprofil 1 ein Hohlkammerprofil 2, das zumindest eine Hohlkammer 3, vorzugweise mehrere durch Stege 4 voneinander getrennte Hohlkammern 3, aufweist.In the embodiment variant shown, the window or door profile 1 is a hollow chamber profile 2 which has at least one hollow chamber 3, preferably a plurality of hollow chambers 3 separated from one another by webs 4.

Das Hohlkammerprofil 2 besteht aus einem Kunststoff, beispielsweise PVC, oder umfasst zumindest einen Kunststoff. Mit letzterem ist gemeint, dass das Hohlkammerprofil 2 auch aus einem WPC (Wood Plastic Composite) bestehen kann.The hollow chamber profile 2 consists of a plastic, for example PVC, or comprises at least one plastic. The latter means that the hollow chamber profile 2 can also consist of a WPC (Wood Plastic Composite).

Es ist aber auch möglich, dass das Hohlkammerprofil 2 aus einem Metall besteht.However, it is also possible for the hollow chamber profile 2 to consist of a metal.

Wenngleich die Ausbildung des Fenster- oder Türprofils 1 als Hohlkammerprofil 2 aus Kunststoff die bevorzugte Ausführungsvariante ist, kann dieses aber auch anders ausgeführt sein. Beispielsweise kann es aus einem anderen Werkstoff bestehen, wie z.B. aus Holz, und/oder es kann ein Profil ohne Hohlkammern 3 sein. So kann es beispielsweise von Vorteil sein, wenn ein Holzprofil mit einem anderen Dekor, insbesondere einer anderen Maserung, versehen wird, da in diesem Fall mit günstigeren Holzsorten teurere nachgeahmt werden können und somit nicht nur Kosten eingespart werden können, sondern auch eine umweltverträglichere Produktion von Fenstern oder Türen erfolgen kann, indem beispielsweise nicht auf Tropenhölzer zurückgegriffen werden muss, sondern mit heimischen Hölzern gearbeitet werden kann.Although the design of the window or door profile 1 as a hollow chamber profile 2 made of plastic is the preferred embodiment variant, this can also be carried out differently. For example, it can consist of another material, such as wood, and / or it can be a profile without hollow chambers 3. For example, it can be advantageous if a wooden profile is given a different decor, in particular a different grain, since in this case cheaper types of wood can be imitated, which means that not only costs can be saved, but also more environmentally friendly production of Windows or doors can be made, for example, by not having to use tropical woods, but working with local woods.

Da Profile zur Herstellung von Fenster oder Türen aus dem Stand der Technik bekannt sind, sei darauf verwiesen, insbesondere hinsichtlich der geometrischen Ausführung oder der verwendeten Werkstoffe.Since profiles for the production of windows or doors are known from the prior art, reference should be made to them, in particular with regard to the geometric design or the materials used.

Das Fenster- oder Türprofil 1 weist einen Grundkörper 5 auf, auf dem auf zumindest einer Oberfläche 6 ein Dekormuster 7 angeordnet bzw. ausgebildet ist.The window or door profile 1 has a base body 5, on which a decorative pattern 7 is arranged or formed on at least one surface 6.

Das Dekormuster 7 wird mittels eines Digitaldruckverfahrens auf der Oberfläche 6 erzeugt. Somit bestehen hinsichtlich der optischen Ausgestaltung des Dekormusters 7 keinerlei Einschränkungen, da im Prinzip jedes Dekormuster 7 mittels Digitaldruck hergestellt werden kann.The decorative pattern 7 is generated on the surface 6 by means of a digital printing process. There are therefore no restrictions with regard to the optical design of the decorative pattern 7, since in principle any decorative pattern 7 can be produced by means of digital printing.

Zur Herstellung des Dekormusters 7 wird bevorzugt ein Tintenstrahldrucker eingesetzt. Dieser sprüht aus einem Druckkopf 8 mit zumindest einer Düse 9 Farbtropfen 10 auf die Oberfläche 6 des Grundkörpers 5.An inkjet printer is preferably used to produce the decorative pattern 7. The latter sprays ink drops 10 from a print head 8 with at least one nozzle 9 onto the surface 6 of the base body 5.

Da Tintenstrahldrucker ebenfalls aus dem Stand der Technik bekannt sind, sei zu weiteren Ausführungen dazu auch auf den einschlägigen Stand der Technik verwiesen, wie beispielsweise hinsichtlich der Erzeugung der Farbtropfen 10 mittels CIJ (Continuous Ink Jet) oder DOD (Drop On Demand), der Steuerung des zumindest einen Druckkopfes 8 mit der zumindest einen Düse 9, der Steuerung der Flugbahn der Farbtropfen 10, etc.Since inkjet printers are also known from the prior art, reference is made to the relevant prior art for further explanations, such as with regard to the generation of the ink drops 10 by means of CIJ (Continuous Ink Jet) or DOD (Drop On Demand), the controller of the at least one print head 8 with the at least one nozzle 9, the control of the trajectory of the ink drops 10, etc.

In der Regel werden für den Farbdruck vier Farben in Digitaldruckverfahren verwendet, nämlich die Farbtönen Cyan, Magenta, Gelb und die Schlüsselfarbe Schwarz (entsprechend dem CMYK-Farbmodell). Die Farben können pigmentbasiert oder farbstoffbasiert sein. Um den Farbraum noch zu optimieren, können auch sogenannte Light Farben zusätzlich eingesetzt. Damit sind Pastell-Farben besser herstellbar.As a rule, four colors are used for color printing in digital printing processes, namely the color tones cyan, magenta, yellow and the key color black (corresponding to the CMYK color model). The colors can be pigment-based or dye-based. To further optimize the color space, so-called light colors can also be used. This makes pastel colors easier to produce.

Für den Farbdruck können die einzelnen Farben nacheinander oder gleichzeitig gedruckt werden. Werden sie nacheinander gedruckt, wird vorzugsweise bei stillstehendem Fenster- oder Türprofil 1 und mit verfahrbaren Druckkopf 8 gedruckt.For color printing, the individual colors can be printed one after the other or simultaneously. If they are printed one after the other, printing is preferably carried out with the window or door profile 1 at a standstill and with a movable print head 8.

Werden sie gleichzeitig bedruckt, erfolgt das Bedrucken vorzugsweise in single-pass Verfahren mit mehreren Druckköpfen, die in Druckrichtung hintereinander angeordnet sein können.If they are printed at the same time, the printing is preferably carried out in a single-pass process with a plurality of print heads, which can be arranged one behind the other in the printing direction.

Bevorzugt werden Tintenstrahldrucker eingesetzt, die mehrere Druckköpfe 8 und mehrere Düsen 9 pro Druckkopf 8 aufweisen, wobei weiter bevorzugt ist, wenn pro Farbe zumindest ein Druckkopf 8 vorhanden ist.Inkjet printers are preferably used which have a plurality of print heads 8 and a plurality of nozzles 9 per print head 8, it being further preferred if at least one print head 8 is present per color.

Prinzipiell ist es möglich, dass Mischfarben bereits vorgemischt eingesetzt werden. In der Regel werden diese aber entweder durch direkte Vermischung auf dem Substrat und/oder rein optisch durch entsprechendes Nebeneinandersetzen von Farbtropfen der Grundfarben erzeugt, wie dies an sich bekannt ist.In principle, it is possible that mixed colors are used premixed. As a rule, however, these are produced either by direct mixing on the substrate and / or purely optically by correspondingly placing color drops of the primary colors next to one another, as is known per se.

Bei dem Verfahren, zu dem in Fig. 1 ein erster Verfahrensschritt dargestellt ist, werden die Farbtropfen 8 mit den unterschiedlichen Farben nacheinander auf die Oberfläche 6 aufgedruckt. Dazu werden in dem ersten Schritt die Farbtropfen 8 nicht ganz bis zu einer Kante 11 aufgedruckt, sondern wird das Bedrucken im ersten Schritt unterbrochen, wenn ein Abstand 12 von der Kante 11 erreicht ist, sodass also die Farbtropfen 8 des ersten Schrittes sich zumindest in dem Abstand 12 von der Kante 11 befinden.In the process to which in Fig. 1 A first method step is shown, the ink drops 8 with the different colors are successively printed on the surface 6. For this purpose, in the first step the ink drops 8 are not completely printed up to an edge 11, but the printing is interrupted in the first step when a distance 12 from the edge 11 is reached, so that the ink drops 8 of the first step are at least in the Distance 12 from the edge 11 are.

Die Kante 11 ist in dargestellten Ausführungsbeispiel keine Seitenkante des Grundkörpers 5 des Fenster- oder Türprofils 1, sondern eine Kante die im Verlauf der Oberfläche 7 ausgebildet ist, beispielsweise durch die Ausbildung eines Falzes, der z.B. als Anschlag dienen kann.In the exemplary embodiment shown, the edge 11 is not a side edge of the base body 5 of the window or door profile 1, but rather an edge which is formed in the course of the surface 7, for example by the formation of a fold which e.g. can serve as a stop.

Es sei darauf hingewiesen, dass die konkrete Darstellung der Geometrie des Falzes in Fig. 1 keinen einschränkenden Charakter hat.It should be noted that the concrete representation of the geometry of the fold in Fig. 1 has no restrictive character.

Die Kante 11 wird also zwischen zwei Bereichen der Oberfläche 6 ausgebildet, die in unterschiedlichen Richtungen verlaufen, also beispielsweise zumindest annähernd waagrecht, wie im linken Teil der Fig. 1, und zumindest annähernd senkrecht, wie im daran anschließenden Teil der Fig. 1. Die Kante 11 kann also beispielsweise dadurch entstehen, dass in der Oberfläche 6 eine Vertiefung 13 ausgebildet ist.The edge 11 is thus formed between two regions of the surface 6 which run in different directions, for example at least approximately horizontally, as in the left part of the figure Fig. 1 , and at least approximately vertically, as in the subsequent part of the Fig. 1 , The edge 11 can thus arise, for example, by forming a depression 13 in the surface 6.

Es sei jedoch erwähnt, dass das Bedrucken der Oberfläche 6 bzw. generell der sichtbaren Oberflächen des Fenster- oder Türprofils 1 entsprechend dieser Beschreibung durchgeführt werden kann, dass also die Flugrichtung der Farbtropfen 8 in einem oder mehreren Kantenbereichen geändert wird, also nicht nur im Bereich der zu Fig. 1 beschriebenen Kante 11. Auch für diese weiteren Kanten des Fenster- oder Türprofils 1, also beispielsweise auch Seitenkanten, können die Ausführungen in diese Beschreibung angewandt werden, beispielsweise hinsichtlich des Abstandes 12.However, it should be mentioned that the printing on the surface 6 or generally the visible surfaces of the window or door profile 1 can be carried out in accordance with this description, that is to say that the direction of flight of the ink drops 8 is changed in one or more edge regions, that is to say not only in the region the too Fig. 1 described edge 11. The statements in this description can also be used for these further edges of the window or door profile 1, for example also side edges, for example with regard to the distance 12.

Bei Erreichen des Mindestabstandes von der Kante 11, also des Abstandes 12, wird in dieser Ausführungsvariante des Verfahrens das Bedrucken der Oberfläche 6 unterbrochen.When the minimum distance from the edge 11, ie the distance 12, is reached, the printing on the surface 6 is interrupted in this embodiment variant of the method.

In einem zweiten, an den ersten Schritt anschließenden Schritt des Verfahrens wird nun der im ersten Schritt nicht bedruckte, an die Kante 11 unmittelbar anschließende Bereich der Oberfläche 6 bedruckt. Dazu wird die Richtung verändert, mit der die Farbtropfen 10 auf die Oberfläche 6 auftreffen. Im einfachsten Fall wird hierzu der Druckkopf 8 schräg gestellt, wie dies in Fig. 2 dargestellt ist, sodass also auch die Farbtropfen 10 schräg auf die Oberfläche auftreffen. Die Druckrichtung an sich, also die Vorschubrichtung des Druckkopfes 8 bleibt unverändert. Es wird also in Richtung des Verlaufs der Kante 11, d.h. in Längsrichtung des Fenster- oder Türprofils 1, gedruckt. Mit anderen Worten verläuft die Kante 11 in Druckrichtung. (In den Fig. 1 und 2 verläuft die Druckrichtung in Richtung senkrecht auf die Papierebene.)In a second step of the method that follows the first step, the area of the surface 6 that is not printed in the first step and immediately adjoins the edge 11 is printed. For this purpose, the direction with which the ink drops 10 strike the surface 6 is changed. In the simplest case, the print head 8 is placed at an angle, as shown in Fig. 2 is shown, so that the ink drops 10 also strike the surface at an angle. The printing direction itself, that is to say the feed direction of the print head 8, remains unchanged. It is therefore printed in the direction of the course of the edge 11, ie in the longitudinal direction of the window or door profile 1. In other words, the edge 11 runs in the printing direction. (In the 1 and 2 the print direction is perpendicular to the paper plane.)

Aufgrund dieser Schrägstellung des Druckkopfes 8 bzw. dessen Düsen 9 breiten sich die einzelnen Farbtropfen 8 im Vergleich zur senkrechten Richtung ovaler (in Druckrichtung) auf der Oberfläche 6 aus, sodass also der Druckkopf 8 weiter von der Kante 11 entfernt bleiben kann und trotzdem Farbe bis zur Kante 11 gelangt.Due to this inclination of the print head 8 or its nozzles 9, the individual ink drops 8 spread out more oval (in the printing direction) on the surface 6 compared to the vertical direction, so that the print head 8 can remain further away from the edge 11 and still paint up comes to edge 11.

Mit "ovaler" ausbreiten ist gemeint, dass die Drucktropfen in Draufsicht beim Drucken keine kreisförmige Fläche bilden, sondern eine ovale.Spreading "oval" means that the print drops do not form a circular surface when viewed from above, but an oval surface.

Bedingt durch diese Verfahrensweise entsteht ein Dekormuster 7 auf der Oberfläche 6 des Fenster- oder Türprofils 1, das eine Schichtdicke14 aufweist, die einem Bereich 15 der zumindest einen Kante 11 des Grundkörpers 5 kleiner ist, als in einem an diesen Bereich 15 anschließenden Bereich 16, wie dies aus Fig. 2 ersichtlich ist. Bedingt dadurch gelangt auch weniger Farbe in den Bereich 17 nach der Kante 11 (bezogen auf die Druckrichtung). Die Angabe "weniger" bezieht sich dabei auf die Menge an Farbe im Vergleich zum Bedrucken der Oberfläche senkrecht von oben.As a result of this procedure, a decorative pattern 7 is formed on the surface 6 of the window or door profile 1, which has a layer thickness 14 that at least covers an area 15 an edge 11 of the base body 5 is smaller than in an area 16 adjoining this area 15, as is the case with Fig. 2 can be seen. As a result, less ink gets into the area 17 after the edge 11 (based on the printing direction). The indication "less" refers to the amount of color compared to printing the surface vertically from above.

Der Grund, warum Farbe in den Bereich 17 nach der Kante 11 gelangt, ist, dass der Grundköper 5 herstellungsbedingt nicht das Sollmaß aufweist, sondern das Istmaß mit zulässigen Toleranzen versehen ist bzw. sein kann. Aufgrund dieser Toleranzen verläuft auch die Kante 11 unter Umständen nicht exakt parallel zur Druckrichtung. Die aus dem Bereich 16 stammende Farbe im Bereich 17 wiederum führt zu Ungenauigkeiten bzw. Unschärfen des Dekormusters 7. Mit dem bzw. den in dieser Beschreibung beschriebenen Verfahren kann dies vermieden bzw. dieser Effekt reduziert werden.The reason why color arrives in the area 17 after the edge 11 is that the basic body 5 does not have the desired dimension due to the production, but rather the actual dimension is or can be provided with permissible tolerances. Because of these tolerances, the edge 11 may not run exactly parallel to the printing direction. The color originating from the area 16 in the area 17 in turn leads to inaccuracies or blurring of the decorative pattern 7. This can be avoided or this effect reduced with the method or methods described in this description.

Würde man mit einem Durchgang die Gesamte Fläche bedrucken wollen, müsste man um die Toleranz über die Kante 11 drucken, um auch bei toleranzbedingt größeren Profilen sicher alles zu bedrucken. Dies würde unweigerlich dazu führen, dass die ins Leere treffenden Düsen 9 ein Überdrucken im Fenster- oder Türprofil 1 verursachen würden, welcher unerwünscht ist. Um dies zu verhindern, wird schräg auf die Kante 11 gedruckt.If you wanted to print the entire area with one pass, you would have to print the tolerance over the edge 11 in order to reliably print everything even with larger profiles due to tolerance. This would inevitably lead to the nozzles 9 hitting the void causing overprinting in the window or door profile 1, which is undesirable. To prevent this, the edge 11 is printed obliquely.

Es sei an dieser Stelle darauf hingewiesen, dass sich das Dekormuster 7 über die gesamte Oberfläche 6 bzw. über sämtliche sichtbaren Oberflächen des Grundkörpers 5 des Fenster- oder Türprofils 1 erstreckt. Es werden also nicht nur Teilbereiche der Oberfläche(n) 6 sondern diese zur Gänze bedruckt.At this point it should be pointed out that the decorative pattern 7 extends over the entire surface 6 or over all visible surfaces of the base body 5 of the window or door profile 1. It is therefore not only partial areas of the surface (s) 6 that are printed entirely.

Bei der voranstehend beschriebenen Ausführungsvariante des Verfahrens werden die Farbtropfen 10 nur einlagig auf die Oberfläche aufgedruckt. Es ist aber auch möglich, dass auch der bereits im ersten Schritt bedruckte Bereich 16 im zweiten Schritt noch einmal überdruckt wird, insbesondere ebenfalls mit dem schräggestellten Druckkopf 8. Generell kann das Dekormuster 7 aus mehreren übereinander gedruckten Lagen von Farbtropfen 10 erzeugt werden, wobei zumindest eine Lage zumindest im Bereich unmittelbar anschließend an die Kante 11, also im Bereich 15, mit schräger Flugbahn der Farbtropfen 10 (im voranstehenden Sinne) gedruckt wird.In the embodiment variant of the method described above, the ink drops 10 are only printed on the surface in one layer. However, it is also possible for the area 16 already printed in the first step to be overprinted again in the second step, in particular also with the inclined print head 8. In general, the decorative pattern 7 can be produced from a plurality of layers of ink drops 10 printed one above the other, at least a layer is printed at least in the area immediately after the edge 11, that is to say in the area 15, with an oblique trajectory of the ink drops 10 (in the above sense).

In Fig. 3 ist eine andere Ausführungsvariante des zweiten Schrittes des Bedruckens des Fenster- oder Türprofils 1 dargestellt. Wiederum ist der Druckkopf 8 mit den Düsen 9 schräg zur Oberfläche 6 des Fenster- oder Türprofils 1 angestellt. Die Flugrichtung der Farbtropfen 10 ist als unterschiedlich zur Flugrichtung der Farbtropfen 10 im ersten Schritt. Anders als bei der in Fig. 2 dargestellten Ausführungsvariante ist der Druckkopf 8 aber nun in die andere Richtung geneigt, also nicht in Richtung auf die bedruckte Oberfläche 6 sondern von dieser weg in Richtung auf den Bereich 17 des Fenster- oder Türprofils 1In Fig. 3 Another embodiment variant of the second step of printing on the window or door profile 1 is shown. Again, the print head 8 is set with the nozzles 9 at an angle to the surface 6 of the window or door profile 1. The direction of flight of the color drops 10 is different from the direction of flight of the color drops 10 in the first step. Unlike the in Fig. 2 In the embodiment variant shown, the print head 8 is now inclined in the other direction, ie not in the direction of the printed surface 6 but away from it in the direction of the area 17 of the window or door profile 1

In Fig. 3 ist strichliert auch angedeutet, dass auch der an den im zweiten Schritt bedruckten Bereich 15 anschließende Bereich 17 bedruckt sein kann. Dabei kann vorgesehen werden, dass im ersten Schritt der Bereich 16 und der Bereich 17 bedruckt werden, und dass daran anschließend der um die Kante 11 noch unbedruckte Bereich 15 mit den schräg gestellten Düsen 9 bedruckt wird, wodurch die "Lücke" zwischen den beiden bereits bedruckten Bereichen 16, 17 geschlossen wird.In Fig. 3 it is also indicated by dashed lines that the area 17 adjoining the area 15 printed in the second step can also be printed. Provision can be made for the area 16 and the area 17 to be printed in the first step and for the area 15, which is still unprinted around the edge 11, to be printed with the inclined nozzles 9, as a result of which the "gap" between the two already exists printed areas 16, 17 is closed.

Anstelle der tatsächlichen Schrägstellung des Druckkopfes 8 oder der Druckköpfe 8 zum Bedrucken des unmittelbar an die Kante 11 anschließenden Bereichs 15 (generelle eines unmittelbar an eine Kante anschließenden Bereichs) kann auch vorgesehen werden, dass nur die Flugbahn an sich der Farbtropfen 10 verändert wird, sodass die Farbtropfen 10 schräg auf die Oberfläche 6 des Grundkörpers 5 auftreffen. Beispielsweise kann dies mit Hilfe eines elektrischen Feldes erreicht werden, durch das die Farbtropfen 10 beim Drucken hindurch müssen, sofern eine elektrisch leitfähige Farbe bzw. Tinte verwendet wird. Die Farbtropfen 10 können dabei je nach Stärke des elektrischen Feldes mehr oder weniger aus ihrer ursprünglichen Flugbahn abgelenkt werden. Es sind auch andere physikalische Effekte für diesen Zweck einsetzbar bzw. ausnutzbar.Instead of the actual inclination of the printhead 8 or the printheads 8 for printing on the area 15 immediately adjacent to the edge 11 (generally an area immediately adjacent to an edge), it can also be provided that only the trajectory itself of the ink drops 10 is changed, so that the ink drops 10 strike the surface 6 of the base body 5 at an angle. For example, this can be achieved with the aid of an electrical field through which the ink drops 10 must pass during printing, provided an electrically conductive ink or paint is used. The ink drops 10 can be deflected more or less from their original trajectory, depending on the strength of the electric field. Other physical effects can also be used or exploited for this purpose.

Die Erfindung schlägt somit generell eine Verfahren zur Herstellung eines Fenster- oder Türprofils 1 vor, nach dem auf zumindest der Oberfläche 6 des Fenster- oder Türprofils 1 das Dekormuster 7mittels Digitaldruck aus Farbtropfen 10 erzeugt wird, wobei die Farbtropfen 10 bis zu dem Abstand 12 von der in Druckrichtung verlaufenden Kante 11 des Fenster- oder Türprofils 1 in einer ersten Richtung, insbesondere senkrecht, auf die Oberfläche des Fenster-oder Türprofils 1 aufgedruckt werden und die Farbtropfen 10 in dem durch den Abstand 12 von der Kante 11 definierten Bereich der Oberfläche 6 in einer zweiten Richtung aufgedruckt werden, die zur ersten Richtung verschieden ist, insbesondere schräg ist.The invention thus generally proposes a method for producing a window or door profile 1, according to which the decorative pattern 7 is generated on at least the surface 6 of the window or door profile 1 by means of digital printing from color drops 10, the color drops 10 up to the distance 12 from the edge 11 of the window or door profile 1 running in the printing direction is printed on the surface of the window or door profile 1 in a first direction, in particular perpendicularly, and the ink drops 10 are printed on the surface by the distance 12 region of the surface 6 defined by the edge 11 are printed in a second direction, which is different from the first direction, in particular is oblique.

Es sei angemerkt, dass es auch möglich ist, dass die Druckrichtung senkrecht auf die Kante 11 verläuft, also beispielsweise in Fig. 2 von links nach rechts. Die Druckrichtung in Längsrichtung des Fenster- oder Türprofils 1 wird jedoch bevorzugt, da sich das Verfahren damit besser in die Produktionslinie für ein Fester- oder Türprofil 1 einbetten lässt.It should be noted that it is also possible for the printing direction to run perpendicular to the edge 11, for example in Fig. 2 left to right. The printing direction in the longitudinal direction of the window or door profile 1 is preferred, however, since the method can thus be better embedded in the production line for a fixed or door profile 1.

Durch die Veränderung der Flugrichtung der Farbtropfen 10 kann das Überdrucken vermieden bzw. reduziert werden, sodass keine oder weniger Farbe, die für den Bereich 15, der unmittelbar an die Kante 11 anschließt, in den zweiten unmittelbar an die Kante 11 anschließenden Bereich 17 gelangt.By changing the direction of flight of the ink drops 10, the overprinting can be avoided or reduced, so that no or less ink, which for the area 15 that immediately adjoins the edge 11, reaches the second area 17 directly adjoining the edge 11.

Sofern das Dekormuster 7 mehrlagig aufgebaut wird, können für die einzelnen Lagen jeweils eine Grundfarbe verwendet werden, also beispielsweise jeweils eine der Farben des CMYK-Farbschemas.If the decorative pattern 7 is constructed in multiple layers, a basic color can be used for the individual layers, for example one of the colors of the CMYK color scheme.

Um eine bessere Haftung des Dekormuster 7 auf der Oberfläche 6 zu erreichen, kann diese vorab mit einem Haftvermittler versehen werden, der gegebenenfalls ebenfalls aufgedruckt werden kann, beispielsweise mit einem Tintenstrahldrucker.In order to achieve a better adhesion of the decorative pattern 7 to the surface 6, this can be provided in advance with an adhesion promoter, which can also be printed on, if necessary, for example with an inkjet printer.

Weiter kann vorgesehen werden, dass anschließend an die Erzeugung des Dekormusters 7 dieses noch zur Gänze mit einem transparenten Schutzlack und/oder mit einem transparenten Glanzlack überdruckt wird, um das Dekormuster 7 besser vor Witterungseinflüssen schützen zu können.It can further be provided that, after the decorative pattern 7 has been produced, it is still completely overprinted with a transparent protective lacquer and / or with a transparent gloss lacquer, in order to be able to better protect the decorative pattern 7 from the weather.

Nach einer Ausführungsvariante des Verfahrens kann vorgesehen werden, dass die Farbtropfen 10 im zweiten Schritt in einem Winkel 18 auf die Oberfläche 6 des Fenster- oder Türprofils 1 aufgebracht werden, der ausgewählt ist aus einem Bereich von 20 ° bis 70 °, insbesondere aus einem Bereich zwischen 30 ° und 60 °. Der Winkel 18 ist dabei jener Winkel, den die Flugbahn der Farbtropfen 10 bzw. die Längsmittelachse des Druckkopfes 8 mit der Oberfläche 6 einschließen, wie dies aus Fig. 2 ersichtlich ist.According to an embodiment variant of the method, it can be provided that the color drops 10 are applied in the second step at an angle 18 to the surface 6 of the window or door profile 1, which is selected from a range from 20 ° to 70 °, in particular from a range between 30 ° and 60 °. The angle 18 is the angle which the trajectory of the ink drops 10 or the longitudinal central axis of the print head 8 enclose with the surface 6, as is evident from this Fig. 2 can be seen.

In der Ausführungsvariante des Verfahrens gemäß Fig. 3 beträgt der Winkel 18 zwischen 110 ° und 160 °, insbesondere zwischen 120 ° und 150 °, ist also komplementär zur vorangehend genanntem Winkel 18.In the embodiment variant of the method according to Fig. 3 If the angle 18 is between 110 ° and 160 °, in particular between 120 ° and 150 °, it is therefore complementary to the above-mentioned angle 18.

Wie bereits voranstehend erwähnt, kann das Verfahren auch dazu eingesetzt werden, um toleranzbedingte Fehler des Fenster- oder Türprofils 1 hinsichtlich ihres Einflusses auf das auf die Oberfläche 6 des Fenster- oder Türprofils 1 aufgedruckte Dekormuster 7 abzuschwächen bzw. ganz zu verhindern. Aus diesem Grund ist gemäß dem erfinderischen Verfahren der Abstand 12 zur Kante 11 zumindest so groß, wie die zulässige Abweichung der Ist-Abmessungen des Fenster- oder Türprofils 1 von den Soll-Abmessungen. Beispielsweise kann also der Abstand 12 zumindest zwischen 0,5 mm und 2 mm betragen.As already mentioned above, the method can also be used to mitigate or completely prevent tolerance-related errors of the window or door profile 1 with regard to their influence on the decorative pattern 7 printed on the surface 6 of the window or door profile 1. For this reason, according to the inventive method, the distance 12 to the edge 11 is at least as large as the permissible deviation of the actual dimensions of the window or door profile 1 from the target dimensions. For example, the distance 12 can be at least between 0.5 mm and 2 mm.

Gemäße einer Ausführungsvariante wird die Breite des Drucks im zweiten Schritt dabei bevorzugt so gewählt, dass in den Sichtflächen leicht überlappend mit dem ersten Schritt gedruckt wird und je nach Toleranzsituation der über die Kante verlaufende Bereich breiter oder schmäler wird. Da sich die Toleranz des Fenster- oder Türprofils 1 über den Profilverlauf wenig ändert ist diese Kante relativ gleich zur Kante 11 und macht damit ein schönes Bild. Es kann hier über Auslaufen des Druckbildes bei Bedarf auch ein sanfter Auslauf realisiert werden.According to one embodiment variant, the width of the print in the second step is preferably selected so that the first step prints slightly overlapping in the visible areas and, depending on the tolerance situation, the area running over the edge becomes wider or narrower. Since the tolerance of the window or door profile 1 changes little over the profile course, this edge is relatively equal to the edge 11 and thus makes a nice picture. If required, a smooth discharge can also be achieved here by running out the printed image.

Es kann auch vorgesehen werden, dass die Farbtropfen 10, die im ersten Schritt auf die Oberfläche des Fenster- oder Türprofils 1 aufgebracht werden, nur teilweise getrocknet oder gehärtet werden, sodass mit den Farbtropfen 10 des zweiten Schrittes eine Vermischung stattfindet, sobald diese auf die erste Schicht auf Farbtropfen 10 aufgedruckt werden. Die Teilhärtung kann beispielsweise mittels UV-Licht oder durch nur teilweise Entfernung des Lösungsmittels der Tinten erfolgen.It can also be provided that the paint drops 10, which are applied to the surface of the window or door profile 1 in the first step, are only partially dried or hardened, so that mixing takes place with the paint drops 10 of the second step as soon as they are on the first layer can be printed on ink drops 10. Partial curing can take place, for example, by means of UV light or by only partially removing the solvent from the inks.

Wie voranstehend ausgeführt, ist das Fenster- oder Türprofil 1 vorzugsweise ein Kunststoffprofil. Üblicherweise werden diese mit einem Extrusionsverfahren hergestellt. Die Druckvorrichtung, d.h. zumindest der Druckkopf 8 oder die Druckköpfe 8 können nach einer weiteren Ausführungsvariante auch in die Herstellungslinie für die Profile integriert werden, indem er oder sie nach einer Kalibrierungsstufe für die Profile angeordnet wird oder werden. Das Bedrucken kann damit zumindest teilweise unmittelbar anschließend an das Kalibrieren erfolgen.As stated above, the window or door profile 1 is preferably a plastic profile. These are usually produced using an extrusion process. According to a further embodiment variant, the printing device, ie at least the print head 8 or the print heads 8, can also be integrated into the production line for the profiles by: or it is arranged according to a calibration level for the profiles. The printing can thus at least partially take place immediately after the calibration.

Ein Abstand 19 der Düsen 9, aus denen die Farbtropfen 10 austreten, von der Oberfläche 6 des Fenster- oder Türprofils 1 kann zwischen 1 mm und 20 mm, insbesondere zwischen 1 mm und 8 mm, betragen. Dieser Abstand 19 bezeichnet dabei die Entfernung der Oberfläche 6 in der Verlängerung der schräg gestellten Düsen 9, wie dies in Fig. 2 dargestellt ist. Sind die Düsen 9 senkrecht auf die Oberfläche gestellt, kann der Abstand der Düsen von der Oberfläche zwischen 1 mm und 2 mm betragen.A distance 19 of the nozzles 9, from which the paint drops 10 emerge, from the surface 6 of the window or door profile 1 can be between 1 mm and 20 mm, in particular between 1 mm and 8 mm. This distance 19 denotes the distance of the surface 6 in the extension of the inclined nozzles 9, as shown in FIG Fig. 2 is shown. If the nozzles 9 are placed vertically on the surface, the distance of the nozzles from the surface can be between 1 mm and 2 mm.

Um eine geringere Schichtdicke des Dekormusters 7 im unmittelbar an die Kante 11 anschließenden Bereiche 15 hinsichtlich des Erscheinungsbildes ausgleichen zu können, kann vorgesehen werden, dass in dem im ersten Schritt nichtbedruckten oder generell den schräg bedruckten Bereich 15 eine höheren Farbsättigung erzeugt wird, als in den im ersten Schritt bedruckten Bereichen 16. Dies kann durch entsprechende Veränderung der Mischung der Farbtropfenanzahl rechnerisch ermittelt bzw. mit einem PC gesteuert werden.In order to be able to compensate for a smaller layer thickness of the decorative pattern 7 in the areas 15 directly adjoining the edge 11, it can be provided that a higher color saturation is generated in the area 15 which is not printed in the first step or generally the obliquely printed area than in the areas Areas printed in the first step 16. This can be determined mathematically by changing the mixture of the number of ink drops accordingly or can be controlled with a PC.

Es ist weiter möglich, dass die sich aufgrund der Richtungsänderung der Flugbahn der Farbtropfen 10 sich ergebenden geänderte Abstand der Düse(n) 9 zur Oberfläche 6 ebenfalls rechnerisch mit einem entsprechenden Programm eines PCs berücksichtigt wird, um damit die Qualität des Druckbildes, also des Dekormusters 7, weiter zu verbessen.It is further possible that the changed distance of the nozzle (s) 9 from the surface 6, which results from the change in direction of the trajectory of the ink drops 10, is also taken into account arithmetically with a corresponding program of a PC, in order to ensure the quality of the printed image, that is to say the decorative pattern 7, continue to improve.

Die Größe des Abstandes 12 von der Kante 11 kann in einem PC entsprechend hinterlegt sein, sodass im Verfahren über den PC bzw. generell einen Computer anhand der Software bestimmt wird, wann während des Druckens für ein bestimmtes Profil, d.h. einen bestimmten Profilquerschnitt, der Abstand 12 erreicht ist. Es ist aber auch möglich, dass der Abstand 12 von der Kante 11 während des Druckens laufend ermittelt wird, beispielsweise mittels einer Kamera, und anhand dieser Daten der Zeitpunkt für die Änderung der Flugrichtung der Farbtropfen 10 im voranstehenden Sinne ermittelt wird.The size of the distance 12 from the edge 11 can be stored accordingly in a PC, so that in the process, the PC or generally a computer is used to determine on the basis of the software when printing for a particular profile, i.e. a certain profile cross section, the distance 12 is reached. However, it is also possible that the distance 12 from the edge 11 is continuously determined during printing, for example by means of a camera, and on the basis of this data the time for the change in the direction of flight of the ink drops 10 is determined in the above sense.

Es ist weiter möglich, dass der Bereich 15 um die Kante 11 abgedeckt wird, beispielsweise mit einer Dichtung.It is also possible for the area 15 to be covered around the edge 11, for example with a seal.

Mit der Kombination der in den Fig. 1 und 3 dargestellten Verfahrensschritten ist es möglich ein bedrucktes Fenster- oder Türprofil 1 herzustellen, das einen fließenden Übergang des Druckbildes vom Bereich 16 in der Bereich 17 über den Bereich 15 um die Kante 11 erlaubt, d.h. mit beidseitig der Kante 11 sanft auslaufenden Farben in diesem Bereich 15.With the combination of the Fig. 1 and 3 The method steps illustrated make it possible to produce a printed window or door profile 1 which allows a smooth transition of the printed image from the area 16 in the area 17 to the area 15 around the edge 11, ie with colors gently fading out on both sides of the edge 11 in this area 15 ,

Durch die Schrägstellung des Druckkopfes 8 bzw. der Düse(n) 9 sollte softwaretechnisch das Druckbild, d.h. das Dekormuster, verzerrt werden, da nun die reale Fläche entsprechend dem Anstellwinkel (Winkel 18) des Druckkopfes 8 bzw. der Düse(n) 9 verlängert ist und somit die aus dem Druckkopf 8 bzw. den Düse(n) 9 applizierte Tinte ein gestauchtes Bild druckt.Due to the inclined position of the print head 8 or the nozzle (s) 9, the print image, i.e. the decorative pattern are distorted, since the real surface is now extended in accordance with the angle of attack (angle 18) of the printhead 8 or the nozzle (s) 9 and thus the ink applied from the printhead 8 or the nozzle (s) 9 is compressed Image prints.

Ich glaube aber nicht, dass diese Tatsache in das Patent aufgenommen werden muss. Es könne jedoch hilfreich sein um die Komplexität einer Schrägstellung des Druckkopfes zu unterstreichen.However, I do not believe that this fact has to be included in the patent. However, it can be helpful to underline the complexity of skewing the printhead.

Die Ausführungsbeispiele zeigen bzw. beschreiben mögliche Ausführungsvarianten, wobei an dieser Stelle bemerkt sei, dass auch diverse Kombinationen der einzelnen Ausführungsvarianten untereinander möglich sind.The exemplary embodiments show or describe possible design variants, it being noted at this point that various combinations of the individual design variants with one another are also possible.

Der Ordnung halber sei abschließend darauf hingewiesen, dass zum besseren Verständnis des Aufbaus Elemente in den Figuren nicht notwendigerweise maßstäblich dargestellt wurden.For the sake of order, it should finally be pointed out that for a better understanding of the structure, elements in the figures have not necessarily been shown to scale.

BezugszeichenaufstellungREFERENCE NUMBERS

11
Türprofildoor profile
22
HohlkammerprofilHollow chamber profile
33
Hohlkammerhollow
44
Stegweb
55
Grundkörperbody
66
Oberflächesurface
77
Dekormusterdecorative pattern
88th
Druckkopfprinthead
99
Düsejet
1010
Farbtropfencolor drops
1111
Kanteedge
1212
Abstanddistance
1313
Vertiefungdeepening
1414
Schichtdickelayer thickness
1515
BereichArea
1616
BereichArea
1717
BereichArea
1818
Winkelangle
1919
Abstanddistance

Claims (8)

  1. A method for producing a window profile or door profile (1) according to which a decor pattern (7) is generated on at least one surface (6) of the window profile or door profile (1) by means of digital printing from ink drops (10), wherein the ink drops (10) are printed onto the surface (6) of the window profile or door profile (1) up to a distance (12) from an edge (11) extending in the printing direction of the window profile or door profile (1) in a first direction, in particular perpendicularly, and the ink drops (10) are printed on in a second direction, which is different from the first direction, in particular oblique, in the region (15) of the surface (6) defined by the distance (12) from the edge (11), characterized in that the distance (12) to the edge (11) is at least as large as the admitted maximum deviation of the actual dimensions of the window profile or door profile (1) from the target dimensions.
  2. The method according to claim 1, characterized in that the ink drops (10) are printed on in several steps, wherein in a first step the ink drops (10) are printed onto the surface (6) with the first direction, and in a further step subsequent to the first step the course of the ink drops (6) is changed as compared to the course of the ink drops (10) in the first step, such that in the second step the ink drops (10) strike the surface (6) of the window profile or door profile (1) not printed onto in the first step in the region of the edge (11).
  3. The method according to claim 1 or 2, characterized in that in the second step the ink drops (10) are applied onto the surface (6) of the window profile or door profile (1) at an angle (18) selected from a range of 20° to 70°.
  4. The method according to one of claims 1 to 3, characterized in that the ink drops (10), which are applied onto the surface (6) of the window profile or door profile (1) in the first step, are just partly dried or hardened such that mixing with the ink drops (10) of the second step takes place.
  5. The method according to one of claims 1 to 4, characterized in that the window profile or door profile (1) is manufactured by means of an extrusion method, the window profile or door profile (1) is subsequently calibrated and that the first step is carried out immediately after the calibration of the window profile or door profile (1).
  6. The method according to one of claims 1 to 5, characterized in that a distance (19) of the nozzles (9), from which the ink drops (10) are discharged, from the surface (6) of the window profile or door profile (1) amounts to between 1 mm and 20 mm.
  7. The method according to one of claims 1 to 6, characterized in that in the region (15) not printed onto in the first step, a higher color saturation is generated than in the regions (16) printed onto in the first step.
  8. A window profile or door profile (1) with a base body (5) comprising a decor pattern (7) on at least one surface (6), said decor pattern (7) being produced on the surface (6) of the base body (5) according to a printing method, wherein a layer thickness (14) of the decor pattern (7) in the region (15) of at least one edge (11) of the base body (5) is smaller than the layer thickness (14) of the decor pattern (7) in a region (16) adjoining this region (15), characterized in that the distance (12) to the edge (11) is at least as large as the admitted maximum deviation of the actual dimensions of the window profile or door profile (1) from the target dimensions.
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AT520096B1 (en) 2019-01-15
AT520096A4 (en) 2019-01-15

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