EP3681724B1 - Machine d'impression directe pour l'application d'une couche d'impression sur des récipients - Google Patents

Machine d'impression directe pour l'application d'une couche d'impression sur des récipients Download PDF

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Publication number
EP3681724B1
EP3681724B1 EP18728586.1A EP18728586A EP3681724B1 EP 3681724 B1 EP3681724 B1 EP 3681724B1 EP 18728586 A EP18728586 A EP 18728586A EP 3681724 B1 EP3681724 B1 EP 3681724B1
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EP
European Patent Office
Prior art keywords
printing
transport
containers
container
plane
Prior art date
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Active
Application number
EP18728586.1A
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German (de)
English (en)
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EP3681724C0 (fr
EP3681724A1 (fr
Inventor
Georg Gertlowski
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.)
Krones AG
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Krones AG
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Publication of EP3681724C0 publication Critical patent/EP3681724C0/fr
Publication of EP3681724B1 publication Critical patent/EP3681724B1/fr
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    • 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
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • 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
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • 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
    • B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
    • B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads

Definitions

  • the present invention relates to a direct printing machine for applying a printing layer to a container according to claims 1 and 8 and to a direct printing method for applying a printing layer to a container according to claim 12.
  • Direct printing processes for printing on containers are known from the state of the art over a wide range of resolutions.
  • the EP 2 089 234 B1 a direct printing process in which a primer is applied to the container before a print image is applied to it. From this it is known that ink drops with a resolution of 200 to 1200 drops/inch (dpi) and also different drop sizes can be applied to the surface of the container in order to form, for example, a primer or at least part of the print image.
  • dpi drops/inch
  • the known process basically allows the application of a primer and the subsequent application of a print image, due to the usable resolutions of a maximum of 1200 dpi and a drop size of 10 to 200 ⁇ m, it cannot be guaranteed over the entire surface of the container that the applied print layer or primer is flat or almost flat. Such unevenness can lead to the printing ink running down when a print image is subsequently applied, in accordance with the relief created by the primer, and the print quality can thus be reduced.
  • the EN 10 2014 206 730 A1 describes a device and a method for inkjet printing on containers.
  • containers are transported in holders rotating on a container table along at least one inkjet printing station with several print heads that are arranged one behind the other in the direction of rotation.
  • the containers rotate in such a way that partial wall segments of the side wall of the containers rotate in front of at least one associated print head in the opposite direction to the direction of rotation of the container table.
  • the print heads are activated in such a way that partial prints are produced on the partial wall segments that complement each other to form a print image. This means that high-quality partial prints can be combined to form a full print image with high machine performance.
  • the EP 2 860 036 A1 relates to a printing device for printing on a peripheral surface of an object, with at least two print heads, each of which has at least one row arrangement of ink dosing elements, in particular ink nozzles, which are each designed for an individually predeterminable dispensing of ink onto the object. It is provided that at least one of the print heads is arranged movably along an extension axis of the ink dosing elements on a print head carrier and that the movably mounted print head is assigned an electrically controllable adjustment device for adjusting a relative position with respect to the at least one further print head.
  • the EN 10 2014 206730 A1 discloses an inclination of print heads in a device for printing containers using inkjet. This arrangement improves the print resolution compared to individual orthogonally positioned nozzle fields.
  • the EN 10 2015 215224 A1 describes a process in which a container is first printed over the entire printing area to increase the print resolution.
  • the direct print head is then moved half a distance along the rows of nozzles using a displacement unit, and the container is then printed again over the entire printing area.
  • the technical problem to be solved is to improve direct printing processes and direct printing machines for printing on containers with regard to the quality of the printed images.
  • the direct printing machine comprises the technical feature that the print head is aligned in such a way that the rows of nozzles form an angle greater than 0° with a plane perpendicular to the transport direction of the containers. This means that the print head is inclined in relation to the container in the transport direction. This reduces the distance between the individual nozzles in the rows of nozzles, at least in the vertical direction, so that the pixel density in this direction can be increased beyond the initial pixel density of the print head. Depending on the angle of attack, for example, twice the ink drop density can be achieved, at least in the vertical direction.
  • printing layer is to be understood as any layer applied to the surface of a container using a printing module of a direct printing machine. This includes in particular colored layers (for example yellow, red or blue), but also functional layers such as primers that are applied to the container before the actual print motif is applied. This primer can already be part of the image (for example, it can be white or have certain other optical properties or it can also be any color), but this does not have to be the case.
  • the primer can also be designed as a transparent layer or at least as a partially transparent layer and, for example, influence the adhesive properties of the color layers applied to it for the printed image.
  • the primer can consist of a material that reduces or increases the surface tension compared to the actual surface of the container, which can be advantageous for wetting with the actual printing inks.
  • nozzle rows form an angle greater than 0° with a plane perpendicular to the transport direction should not be understood as an arbitrary misalignment, for example due to an incompletely precise alignment of a printing module arranged vertically elsewhere (the nozzle rows run parallel to the plane perpendicular to the transport direction as planned), but rather as intentional inclinations. These will therefore generally be larger, even significantly larger, than the error tolerances acceptable for vertical alignment and are in the range of several degrees, in particular 5° to 30°.
  • the nozzle rows are arranged in a plane in the print head that is perpendicular to the transport plane. This means that the print head cannot be moved in the direction of the transport plane or in the direction of a container is not tilted but stands straight. Distortions of the print image can thus be avoided.
  • the print head has a normal resolution of 1200 dpi.
  • the normal resolution means that this is the resolution that can be achieved on a flat substrate when the ink drops hit vertically.
  • the printing machine comprises two print heads arranged one after the other in the transport direction, which are offset from one another perpendicular to the transport plane and each have a normal resolution of 600 dpi, whereby both print heads comprise at least two rows of nozzles and are aligned such that the rows of nozzles form an angle greater than 0° with the plane perpendicular to the transport direction of the containers.
  • a suitable offset of the ink drops emitted by the print heads can be achieved, so that even with the comparatively low resolution of 600 dpi/print head, an ink drop density can be achieved on the surface of the container that is significantly greater than the sum of the ink drop densities of the individual print heads, for example significantly greater than 1200 dpi, so that a layer that is as flat as possible is applied.
  • the print heads are offset from one another by a distance h, which corresponds to half the distance between two adjacent nozzles in a row of nozzles in the direction of the surface normal of the transport plane.
  • h corresponds to half the distance between two adjacent nozzles in a row of nozzles in the direction of the surface normal of the transport plane.
  • the print head(s) can be designed in such a way that they can produce ink drops with a diameter of 10 to 50 ⁇ m.
  • the diameter of the ink drops refers to the dimensions of an ink drop at normal pressure and room temperature in equilibrium, i.e. without any total forces acting on the ink drop.
  • one of the print heads can be designed to eject ink drops with a smaller diameter than the other print head. This makes it possible to create embodiments in which the gaps between the relatively large ink drops are filled by the smaller ink drops, thus creating a surface that is as flat as possible.
  • the ink drop density can thus be doubled in this direction (i.e. perpendicular to the transport plane of the containers). In this way, a printing layer that is as uniform as possible can be applied, which can improve the quality of print images applied to this printing layer.
  • the distance h is equal to half the distance between two adjacent nozzles in a row of nozzles.
  • one of the print heads can be designed to eject ink drops with a smaller diameter than the other print head. If the ink drops from the print head designed to eject smaller ink drops hit the gaps between the ink drops of the other print head exactly, an even print layer can be achieved because the smaller ink drops fill the gaps.
  • the print heads have a normal resolution of 720 dpi and/or at least four rows of nozzles.
  • the maximum resolutions achievable with such print heads show good results in terms of the homogeneity of the applied print layer and thus improve the conditions for print images or further print layers to be applied thereon.
  • each print head is assigned an adjustment device and this is designed to change the relative position of the print head to the transport plane.
  • a change in the position perpendicular to the transport direction and a change in the angle enclosed by a plane perpendicular to the transport direction and the rows of nozzles are intended.
  • the settings of the print heads can be adapted to the requirements of the printing layer for the containers, for example depending on the type of container or the level of quality to be achieved.
  • the method according to the invention for printing containers comprises the features that the containers are transported in a direct printing machine according to one of the preceding embodiments along a transport path defining a transport plane and are provided with the printing layer during transport.
  • During transport does not necessarily mean that the containers experience a movement along a transport direction in the transport device during the printing process.
  • the containers can also remain stationary or at least rotate relative to the print heads during the printing process.
  • the ink drops applied to the container have a volume of 3 to 30 pl and/or a diameter of 10 to 50 ⁇ m and/or a distance between the centers after application to the container of 15 to 20 ⁇ m, preferably 17.5 ⁇ m, at normal temperature and normal pressure.
  • the print heads are aligned relative to the transport plane using an adjustment device to a predetermined value. This makes it possible to adapt the print heads to different requirements.
  • Fig. 1a an arrangement of a container 30 on a transport path 31 is shown.
  • the container 30 is transported along the arrow 32 shown.
  • the transport path shown here is shown as an example as a conveyor belt on which the containers 30 are transported. Such transport is not mandatory. Alternatively, transport can also be carried out using neck handling or on a stand or turntable in conjunction with a centering device. All of these embodiments for transporting the containers are already known from the prior art and can be used together with the invention described here.
  • each of these special designs for transport can be assigned a "transport plane" in which the containers are transported. This does not have to coincide with an area of the transport device or be explicitly defined by it. In principle, for example, any plane that runs perpendicular to the longitudinal axis of a container transported in the transport device can be regarded as the transport plane of the container.
  • the longitudinal axis of the container usually extends from the bottom of the container to the opening and, in particular in the case of rotationally symmetrical or essentially rotationally symmetrical containers, corresponds to their axis of symmetry.
  • a print head 1 in the direct printing machine (which is not shown in full here) is arranged in such a way that the individual nozzles of the nozzle rows 11 and 12 point in the direction of the surface of a container guided past the print head.
  • the individual print nozzles of the nozzle rows 11 and 12 can then, as shown here in dashed lines, dispense ink drops and apply them to the surface of the container. This can produce a print image or a coating on the surface of the container.
  • Various printing inks (particularly with different colors) and functional substances that are present as liquids under normal conditions (pressure, temperature, etc.) and can be applied to the surface of the container are already known from the prior art.
  • the nozzle rows 11 and 12 are arranged together with the print head 1 in such a way that the nozzle rows 11 and 12 or an imaginary connecting line of the individual nozzles of each nozzle row run parallel to a plane 33, which in turn is perpendicular to the transport direction of the containers.
  • the maximum resolution in the vertical direction starting from the transport plane, i.e. in the direction of the surface normal n 1 , for an applied print image is therefore equal to the resolution of the print head in this direction, and is therefore given by the distance between the individual nozzles in the nozzle rows in the direction n 1 .
  • the Fig. 1b an embodiment of a direct printing machine (here at least the transport device 131 and a print head 101) according to the invention.
  • the properties of the transport device are compared to those in Fig. 1a unchanged.
  • the print head 101 is compared to the Fig. 1a arranged in such a way that the nozzle rows 111 and 112 form an angle ⁇ with the plane 133 and not, as in Fig.1 shown, run parallel to it. This reduces the direction of the surface normal n 1 of the transport plane the distance between adjacent nozzles in a row of nozzles, so that the image resolution or the density with which ink drops can be emitted in this direction can be increased.
  • the angle can be in a range between 5° and 30°, which for common print heads with a maximum resolution of 1200 dpi allows an increase to at least 1400 dpi and thus an ink drop density that is 1/6 higher, allowing a significantly more even print layer to be applied.
  • the plane of the nozzle rows does not have to be perpendicular to the transport plane defined by the transport device 131 (i.e. it does not have to run parallel to n 1 ).
  • the print head can therefore also be inclined relative to the transport plane, for example in cases where the neck area of the container is to be printed.
  • Methods can also be provided in which the print head is moved along the contour of the container and between a position in which the nozzle rows in the plane 113 are perpendicular to the transport plane and a position in which the plane 113 with the nozzle rows arranged therein encloses an angle of less than 90° with the transport plane. Such movements leave the angle ⁇ invariant with respect to the plane 133 perpendicular to the transport plane, so that the increased density of the ink drops perpendicular to the transport plane can be maintained.
  • one or more adjustment devices can be provided which can adjust the alignment of the print head as a whole or at least adjust the alignment of the nozzle rows so that the angle ⁇ to the plane 133 is changed.
  • These adjustment devices can be actuators or similar which are connected to a control unit, such as a computer on which a control program runs, which makes these settings either on the basis of user input and/or based on the container to be printed and controls the adjustment device accordingly.
  • Fig. 2a - c show an embodiment of the invention in which two print heads according to the Fig. 1b described embodiment are provided in the printing machine.
  • a container 130 in a transport path 131 passes along the transport direction 132 first the print head 201 and then the print head 202. Both can either have rows of nozzles arranged obliquely at the same angle with respect to the plane perpendicular to the transport direction (for example 25°) or the angles can be different.
  • the print heads 201 and 202 are offset from each other perpendicular to the transport plane, i.e. parallel to the surface normal n 1 .
  • the height offset is h and can preferably be a fraction of the offset of two nozzles of adjacent nozzle rows along the normal n 1 .
  • the vertical distance between the nozzles of the nozzle heads can be adjusted so that the density of the ink drops that ultimately form the print layer on the container is further increased.
  • This embodiment is particularly advantageous if the individual print heads 201 and 202 only have a comparatively low resolution, for example 600 dpi. With this embodiment, the resulting density of ink drops in the direction of the normal n 1 can then be increased to over 1200 dpi.
  • each of the print heads is assigned an adjustment device, which is preferably designed not only to change the angle of the nozzle rows to the plane perpendicular to the transport direction, but also to influence the height difference h.
  • a corresponding control unit for example a computer, can be connected to one or more servo drives per printing module and effect appropriate control.
  • Fig. 2b and 2c show embodiments of ink drop distributions on the printed surface of a container, as achieved with the print heads according to Fig. 2a can be generated.
  • a container with the printed image 250 is shown, with a section 251 being shown in schematically enlarged form.
  • a section 251 being shown in schematically enlarged form.
  • the print heads 201 and 202 produce ink drops of the same size, which all have a diameter of 10 - 50 ⁇ m, for example.
  • Fig. 2c also shows a section 252 of a print image 250 or a print layer 250 on the surface of a container 130.
  • the sizes of the ink drops of the different print heads are different. While the ink drops of the ink drop rows 211, 212 have the same diameter (for example 50 ⁇ m) and were applied with the same print head, the ink drops of the ink drop row 221 have a smaller diameter and are additionally in the gaps between the individual ink drops of the ink drop rows 211 and 212.
  • the size of these ink drops can be, for example, only 10 ⁇ m.
  • the ink drops of the ink drop row 221 are applied to the surface of the container in such a way that the connecting lines of the center of such an ink drop with the centers of the directly adjacent ink drops from the ink drop rows 211 and 212 enclose an angle of exactly 60°, so that the ink drop of the ink drop row 221 is positioned exactly in the gap between the ink drops of the ink drop row 211 and the ink drops of the ink drop row 212.
  • the ink drops can basically have a size of 10 - 50 ⁇ m. In addition, they can have a volume under normal conditions (normal temperature and normal pressure) of 3 - 30 pl and on the surface of the container the centers of the ink drops can have a distance from each other of, for example, 15 - 20 ⁇ m, preferably 17.5 ⁇ m.
  • Fig.3 shows a further embodiment in which two print heads 301 and 302 are also arranged one after the other in the transport direction of the containers 130, so that the container 130 passes them one after the other during transport in the direction 132.
  • the rows of nozzles are arranged so that they run parallel to the surface normal of the transport plane, here designated n 1.
  • the print heads are spaced apart in the direction of the surface normal n 1 , so that two nozzles from the two print heads that correspond to one another (for example the first nozzle in the nozzle row) have a distance h in the direction of the surface normal n 1 that is smaller than the distance between two immediately adjacent nozzles in a nozzle row of the print head.
  • this distance is exactly half the distance between two adjacent nozzles in a nozzle row, so that the ink drops that are emitted by the second print head 302 in the transport direction of the container 130 reach exactly the gaps between the ink drops of the first print head 301.
  • the ink drop density can be doubled.
  • print heads with a dpi number in the direction of the surface normal n 1 of 720 dpi can be used here, so that the total density can be increased to 1440 dpi.
  • an adjustment device (not shown in detail) is provided, which is designed, for example, in the form of one or more servo motors and can adjust the distance h between the print heads by moving either only one or both print heads.
  • UV-curable inks are preferred. These are common inks that are already used for printing on containers. These cure when irradiated with UV light from suitable sources and have very good adhesive properties with respect to PET. Since the present invention can also be used in particular in conjunction with PET-based containers, good results can be achieved in this way.
  • the measurement of the parameters specified for the ink drops, in particular drop size, volume, diameter, contact angle on the surface of the container, can also be carried out using a Drop Shape Analyzer DSA30 Micro available from KRÜSS.
  • a test body can be equipped with a transparent PET film that is, for example, 25-50 ⁇ m thick.
  • the film can have the shape of a label and can be fixed to the container using adhesive strips, for example.
  • test body prepared in this way is then subjected to a test print, preferably using only every fifth or every tenth print nozzle of a print head, so that the ink drops on the test body or film are as isolated as possible.
  • the film is then removed from the test body and analyzed with the Drop Shape Analyzer DSA30, which enables height, width, diameter and contact angle measurements to be achieved.
  • such tests can be carried out several times, at least 30 times, preferably 300 times, and by subsequently applying a normal distribution or other statistical methods, the mean value of the parameters relevant to the ink drops and any deviations (in particular standard deviations) can be determined.
  • a container made of PET can be used, which is cut up after printing and from which a printed piece is further used for measurement according to the procedure described above.
  • pretreatment of the container and posttreatment of the printed container can also influence the properties of the ink drops, it is preferable to use a test container that is pretreated according to the desired production and posttreated according to the desired production after printing and before measuring/analyzing.
  • the volume of an ink drop can be measured by weighing.
  • a test substrate of known mass is provided with, for example, 10,000 or 100,000 ink drops and the test substrate printed in this way is then weighed.
  • the mass difference can be used to determine the total mass of the ink drops and thus the average mass of an ink drop.
  • the volume of an individual ink drop can be calculated from this value using the known density of the ink drops, for example at room temperature and normal pressure.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)

Claims (14)

  1. Machine d'impression directe permettant d'appliquer une couche d'impression sur des récipients (130) dans l'industrie du traitement des boissons, avec au moins une tête d'impression (101) comprenant au moins deux rangées de buses (111, 112) permettant d'appliquer des gouttes d'encre sur une surface d'un récipient, dans laquelle
    la tête d'impression est orientée de telle sorte que les rangées de buses forment un angle supérieur à 0° par rapport à un plan (133) perpendiculaire à la direction de transport (132) des récipients, dans laquelle un dispositif de réglage conçu pour modifier la position relative de la tête d'impression par rapport au plan de transport est associé à chaque tête d'impression (301, 302).
  2. Machine d'impression directe selon la revendication 1, dans laquelle le plan dans lequel les rangées de buses (111, 112) sont agencées dans la tête d'impression (101) est perpendiculaire au plan de transport.
  3. Machine d'impression directe selon la revendication 1 ou 2, dans laquelle la tête d'impression (101) présente une résolution normale de 1200 dpi.
  4. Machine d'impression directe selon la revendication 1 ou 2, dans laquelle la machine d'impression comprend deux têtes d'impression (201, 202) agencées l'une à la suite de l'autre dans la direction de transport des récipients, décalées l'une par rapport à l'autre perpendiculairement au plan de transport et présentant respectivement une résolution normale de 600 dpi, dans laquelle les deux têtes d'impression comprennent au moins deux rangées de buses et sont orientées de sorte que les rangées de buses forment un angle supérieur à 0° par rapport au plan perpendiculaire à la direction de transport des récipients.
  5. Machine d'impression directe selon la revendication 4, dans laquelle les têtes d'impression (201, 202) sont décalées l'une par rapport à l'autre d'une distance h correspondant à la moitié de la distance entre deux buses voisines d'une rangée de buses dans la direction de la normale à la surface du plan de transport.
  6. Machine d'impression directe selon l'une quelconque des revendications 1 à 5, dans laquelle la ou les têtes d'impression est/sont conçue(s) pour appliquer des gouttes d'encre présentant un diamètre compris entre 10 et 50 µm.
  7. Machine d'impression directe selon la revendication 4 ou 5, dans laquelle une des têtes d'impression (201, 202) est conçue pour appliquer des gouttes d'encre présentant un diamètre inférieur à celles de l'autre tête d'impression.
  8. Machine d'impression directe permettant d'appliquer une couche d'impression sur des récipients (130), tels que des bouteilles dans l'industrie du traitement des boissons, avec deux têtes d'impression (301, 302) agencées l'une à la suite de l'autre dans la direction de transport des récipients et comprenant respectivement au moins deux rangées de buses, dans laquelle les têtes d'impression sont agencées perpendiculairement au plan de transport de manière décalée l'une par rapport à l'autre d'une distance h inférieure à la distance entre deux buses adjacentes dans une rangée de buses, dans laquelle un dispositif de réglage conçu pour modifier la position relative de la tête d'impression par rapport au plan de transport est associé à chaque tête d'impression (301, 302).
  9. Machine d'impression directe selon la revendication 8, dans laquelle la distance h est égale à la moitié de la distance entre deux buses voisines dans une rangée de buses.
  10. Machine d'impression directe selon la revendication 8 ou 9, dans laquelle une des têtes d'impression (301, 302) est conçue pour appliquer des gouttes d'encre présentant un diamètre inférieur à celles de l'autre tête d'impression.
  11. Machine d'impression directe selon l'une quelconque des revendications 8 à 10, dans laquelle les têtes d'impression (301, 302) présentent une résolution normale de 720 dpi et/ou au moins quatre rangées de buses.
  12. Procédé d'impression directe permettant d'appliquer une couche d'impression sur un récipient (130), tel qu'une bouteille dans l'industrie du traitement des boissons,
    dans lequel
    les récipients sont transportés dans une machine d'impression directe selon l'une quelconque des revendications 1 à 11 le long d'une voie de transport (131) définissant un plan de transport et sont revêtus de la couche d'impression pendant le transport, dans lequel les récipients sont déplacés pendant le transport le long d'une direction de transport dans le dispositif de transport pendant l'opération d'impression ou les récipients sont immobiles par rapport aux têtes d'impression pendant l'opération d'impression ou les récipients sont soumis à une rotation.
  13. Procédé d'impression directe selon la revendication 12, dans lequel les gouttes d'encre appliquées sur le récipient à température normale et pression normale présentent un volume compris entre 3 et 30 pl et/ou un diamètre compris entre 10 et 50 µm et/ou une distance entre les points centraux, après application sur le récipient, comprise entre 15 et 20 µm, de manière préférée égale à 17,5 µm.
  14. Procédé d'impression directe selon la revendication 12 ou 13, dans lequel l'orientation des têtes d'impression (101, 201, 202, 301, 302) par rapport au plan de transport est ajustée à une valeur prédéfinie au moyen d'un dispositif de réglage.
EP18728586.1A 2017-09-04 2018-05-28 Machine d'impression directe pour l'application d'une couche d'impression sur des récipients Active EP3681724B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017215433.0A DE102017215433A1 (de) 2017-09-04 2017-09-04 Direktdruckmaschine zum Aufbringen einer Druckschicht auf Behälter
PCT/EP2018/063930 WO2019042600A1 (fr) 2017-09-04 2018-05-28 Machine d'impression directe pour l'application d'une couche d'impression sur des récipients

Publications (3)

Publication Number Publication Date
EP3681724A1 EP3681724A1 (fr) 2020-07-22
EP3681724C0 EP3681724C0 (fr) 2024-05-29
EP3681724B1 true EP3681724B1 (fr) 2024-05-29

Family

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EP (1) EP3681724B1 (fr)
CN (1) CN213413297U (fr)
DE (1) DE102017215433A1 (fr)
WO (1) WO2019042600A1 (fr)

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US20190174933A1 (en) 2017-12-12 2019-06-13 Gpcp Ip Holdings Llc Food service cup dispensers, systems, and methods
US11472579B2 (en) 2018-12-04 2022-10-18 Gpcp Ip Holdings Llc Film securing apparatus and method
US11752779B2 (en) 2017-12-12 2023-09-12 Gpcp Ip Holdings Llc Food service cup dispensers, systems, and methods
US12077337B2 (en) 2018-12-04 2024-09-03 Yum Connect, LLC Systems and methods for sealing a container
IT202100011804A1 (it) * 2021-05-07 2022-11-07 Quantix Digital S R L Macchina da stampa digitale a getto di inchiostro
KR20230072113A (ko) * 2021-11-17 2023-05-24 삼성전자주식회사 칼라 패널, 가전 기기 및 칼라 패널의 제조 방법
DE102022101561A1 (de) * 2022-01-24 2023-07-27 Krones Aktiengesellschaft Verfahren zum strahlungsgehärteten Reliefdruck auf Behälter
DE102022131204A1 (de) 2022-11-25 2024-05-29 Krones Aktiengesellschaft Verfahren zur Farbvermessung eines Drucksystems für den Tintenstrahl-Mehrfarbendruck auf Behälter
DE102023103999A1 (de) * 2023-02-17 2024-08-22 Iwk Verpackungstechnik Gmbh Tubenfüllmaschine und Verfahren zum Beschriften einer Tube in einer Tubenfüllmaschine

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DE102014206730A1 (de) * 2014-04-08 2015-10-08 Krones Ag Vorrichtung und Verfahren für den Tintenstrahldruck auf Behälter

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EP2860036A1 (fr) * 2013-10-09 2015-04-15 HINTERKOPF GmbH Dispositif d'impression, imprimante et procédé de fonctionnement d'un dispositif d'impression
DE102014206730A1 (de) * 2014-04-08 2015-10-08 Krones Ag Vorrichtung und Verfahren für den Tintenstrahldruck auf Behälter

Also Published As

Publication number Publication date
WO2019042600A1 (fr) 2019-03-07
DE102017215433A1 (de) 2019-04-04
EP3681724C0 (fr) 2024-05-29
EP3681724A1 (fr) 2020-07-22
CN213413297U (zh) 2021-06-11

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