EP3984746B1 - Dispositif d'impression rotative et procédé de fonctionnement d'un dispositif d'impression rotative - Google Patents

Dispositif d'impression rotative et procédé de fonctionnement d'un dispositif d'impression rotative Download PDF

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Publication number
EP3984746B1
EP3984746B1 EP21202605.8A EP21202605A EP3984746B1 EP 3984746 B1 EP3984746 B1 EP 3984746B1 EP 21202605 A EP21202605 A EP 21202605A EP 3984746 B1 EP3984746 B1 EP 3984746B1
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EP
European Patent Office
Prior art keywords
transfer
foil
printing device
rotary printing
adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21202605.8A
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German (de)
English (en)
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EP3984746A1 (fr
Inventor
Harman VORENKAMP
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.)
Mayr Melnhof Karton AG
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Mayr Melnhof Karton AG
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Publication of EP3984746A1 publication Critical patent/EP3984746A1/fr
Application granted granted Critical
Publication of EP3984746B1 publication Critical patent/EP3984746B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
    • B41F16/002—Presses of the rotary type
    • B41F16/0033—Presses of the rotary type with means for applying print under pressure only, e.g. using pressure sensitive adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/062—Presses of the rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/16—Programming systems for automatic control of sequence of operations

Definitions

  • From the EP 1 752 289 A2 is a device for transferring imaging layers from a transfer film to printed sheets provided with an image-wise coating with an adhesive, with a coating unit for transferring imaging layers.
  • the adhesive is applied in the coating plant, the coating plant containing a common impression cylinder forming a transfer gap and a press roller.
  • the transfer film can be guided by a film supply roll around the press roller or approximately tangentially on the press roller, in such a way that it rests with the coated side on the printed sheet guided on the impression cylinder and is guided under pressure together with the printed sheet through the transfer gap, in such a way that When the printed sheet emerges from the transfer gap, imaging layers adhere to the adhesive-coated image areas on the printed sheet.
  • the transfer film used in this way is fed to a film collecting device after it exits the transfer gap.
  • Film guide devices are provided to guide the transfer film from the film supply roll to the transfer gap and from the transfer gap to the film collecting device.
  • sensors Associated with the web of the transfer film or provided in conjunction with film guiding devices are sensors for detecting the presence of transfer film or the web tension of the transfer film or a value that correlates therewith. Monitoring is therefore carried out as to whether there is still a film in the device for the application of corresponding elements.
  • the CN 104 476 912 A shows a rotary printing device for cold foil coating of predetermined application areas on a web to be printed.
  • the device includes a film transfer unit with a control device for controlling the movement of the film transfer unit.
  • the US 2020/051165 A1 refers to an electrographic Printing method, in particular to printing with metallic thin-film elements and, in one embodiment, to the electrographic structuring of electrically conductive thin films with a carrier and a digitally structured electrically conductive layer.
  • a rotary printing surface is used to print on a material.
  • the different printing colors that are to be aligned with each other are used with the same rotating printing surface, e.g. B. an impression machine, printed on different areas of the material.
  • the object of the present invention is to create a rotary printing device that can be operated particularly efficiently and a method for operating a rotary printing device particularly efficiently.
  • a first aspect of the invention relates to a rotary printing device for cold foil coating of predetermined application areas on a web to be printed, with at least one transfer component for transferring adhesive to the application areas of the web, with at least one film transfer unit, which is used to arrange transfer film elements arranged on at least one transfer film on the application areas provided with adhesive, and with at least one computing and control device for controlling the movement of at least the film transfer unit, the computing and control device being designed to record, process and based on predetermined and / or currently determined position data of the respective transfer film element Position data to control the movement of at least the film transfer mechanism.
  • the application areas represent respective zones of the web to be printed, on which the transfer film elements are arranged and thereby connected to the web printed web can be connected.
  • the transfer film elements can be designed as panels, which can be separated from a transfer film.
  • the transfer film can comprise the transfer film elements as well as a transfer film residue, from which the transfer film elements can be separated in order to arrange the latter on the application areas provided with adhesive.
  • the transfer component can preferably be designed as a roller and in this case can also be referred to as a transfer roller.
  • the transfer film can be designed and referred to as a cold film or as a cold seal film.
  • the rotary printing device comprises the computing and control device, which is designed to record and process predetermined and/or currently determined position data of the respective transfer film element and to control the movement of at least the film transfer unit based on this position data.
  • the predetermined position data can be determined at least based on a predetermined distance between the individual transfer film elements.
  • the rotary printing device may comprise at least one reading device for registering positions of register marks and for the register marks to be designed to identify the position of the individual transfer film elements, with at least one register mark being arranged in the area of the respective transfer film element on the transfer film, and the determined current position data of the register marks are supplied to the computing and control device for controlling the movement of at least the film transfer unit (register-controlled cold film coating).
  • the rotary printing device is designed for register-controlled cold foil coating of the application areas with the transfer foil elements. This is achieved, for example, by arranging at least one register mark in the area of the respective transfer film element. This is possible using the position of the individual register mark recorded by the reading device to control the movement of the film transfer mechanism. With the predetermined timing of the movement of the film transfer unit via predetermined position data of the transfer film elements and/or the register-controlled coating, it is advantageously possible to align the transfer film element with a distance of max. +/- 0.3 mm and less relative to the application area.
  • the rotary printing device makes it possible, in particular, to transfer the transfer film elements to the web to be printed in a clocked manner.
  • the transfer film elements can also be transferred as coatings in register onto the web to be printed.
  • the computing and control device can be designed for register control.
  • the computing and control device can be used for register-controlled cold foil coating. Furthermore, there is the possibility that the computing and control device also controls the movement of the transmission component based on the determined position data of the register marks.
  • the film transfer mechanism comprises at least one transfer means with at least one cliché or stamp for pressing the transfer film elements onto the application areas and the transfer means and the at least one transfer component are coupled to one another via a virtual guide axis.
  • the transfer means can be designed, for example, as a transfer roller or as a transfer plate, by means of which the respective transfer film elements can be pressed onto the application areas.
  • the term “transfer roller” or “transfer plate” refers to a roller or plate for transferring the transfer film elements to the application areas by applying pressure based on the corresponding transfer roller or the corresponding transfer plate. By pressing the respective transfer film elements, they can be arranged on the respective application areas.
  • the transfer means can comprise a sleeve via which the transfer film elements can be pressed onto the application areas.
  • the sleeve can also be coated with an elastomeric material, such as rubber or polyurethane. If the sleeve has such a coating made of the elastomeric material, the sleeve can also be referred to as a “sleeve”.
  • the coupling of the at least one transfer means and the at least one transmission component via a virtual master axis is also advantageous, since the transfer means and the transmission component are not or not only mechanically coupled to one another and are therefore not or not only mechanically synchronized with one another, but the transfer means and transmission component are, for example, mechanically decoupled and can be synchronized in terms of control or regulation technology by means of the computing and control device of the rotary printing device.
  • a vertical shaft can be omitted, so that, for example, the vertical shaft for mechanical coupling and synchronization of the transfer means and the transmission component can be omitted, thereby, for example, a mechanical To dissolve or avoid a connection or a mechanical coupling between the transfer medium and the transfer component.
  • the virtual master axis can be realized in particular in that the transfer means and the transmission component, which can each be designed as cylinders, can be assigned respective individual drives, for example respective servo drives, for driving, the individual drives via the virtual master axis and thus in terms of control or regulation technology , but not physically or mechanically, are coupled or synchronized with one another. This is done, for example, by position control, which is carried out using the (electronic) computing and control device is carried out.
  • the individual drives contain, for example, current positions of the master axis as position setpoints from the position control or from a movement control, in particular at least essentially simultaneously.
  • the drives receive the position setpoints, for example, via a bus system designed in particular as a real-time bus system.
  • the electronic computing and control device transmits, for example, electrical signals that characterize or include the respective position setpoints.
  • the individual drives receive the signals and thus the position setpoints and move the cylinders, in particular in a controlled manner, into actual positions that preferably correspond to the position setpoints or deviate only slightly from the position setpoints, for example due to technically caused control inaccuracies.
  • the computing and control device controls a feed roller of the film transfer unit in such a way that a running speed of the transfer film is set and controlled by a movement of the feed roller.
  • the at least one transfer means and the at least one transmission component are arranged to guide the web to be printed over a web length of a maximum of 6 m without contact between the at least one transfer means and the at least one transmission component.
  • the path length corresponds to a free path length of the path at which there is no contact between the path and the at least one transfer means and between the path and the at least one transmission component.
  • the rotary printing device is designed to transfer holograms to the respective application areas using the transfer film elements. This is advantageous because the rotary printing device can be used particularly flexibly due to the possibility of transmitting the holograms. The holograms can thus be transferred to the respective application areas in a register-controlled manner using the transfer film elements using the rotary printing device.
  • the rotary printing device comprises a drying device for drying adhesive applied to the web to be printed between the at least one transfer agent and the at least one transfer component.
  • a drying device for drying adhesive applied to the web to be printed between the at least one transfer agent and the at least one transfer component.
  • the drying device can prevent the adhesive applied to the application areas from being too liquid or running.
  • the drying device enables the use of different compositions and/or types of adhesive.
  • the drying device can be designed to emit hot air, infrared radiation, UV radiation and additionally or alternatively ultrasonic waves for drying. After drying, the adhesive can be present as a substrate that adheres to the application areas and is therefore sticky.
  • the rotary printing device comprises an adhesive application device which is designed to apply adhesive to the at least one transfer component and/or to the application areas.
  • an adhesive application device which is designed to apply adhesive to the at least one transfer component and/or to the application areas. This is advantageous because the adhesive application device allows particularly targeted dosing when transferring the adhesive. This means that the adhesive can be transferred directly or indirectly to the application areas and thus applied as required.
  • the adhesive application device is designed to apply the adhesive using flexographic printing, jet printing, gravure printing, screen printing and/or offset printing. This is advantageous since both flexographic printing, jet printing, gravure printing, screen printing and offset printing enable particularly precise dosage of the adhesive when it is applied to the transfer component and additionally or alternatively to the application areas.
  • the rotary printing device is set up to carry out the cold foil coating in a clocked manner depending on the respective distances between markings arranged on the web to be printed. This is an advantage because the cold foil coating can be carried out in a particularly targeted manner thanks to the respective distances.
  • the respective distances can also be referred to as clocking distances.
  • a second aspect of the invention relates to a method for operating a rotary printing device, in particular for cold foil coating of predetermined application areas on a web to be printed, comprising at least the following steps: transferring adhesive using at least one transfer component of the rotary printing device to the application areas of the web, arranging the transfer film elements the application areas provided with adhesive using at least one film transfer unit of the rotary printing device and controlling the movement of at least the film transfer unit by means of a computing and control device of the rotary printing device, the computing and control device being designed to record predetermined and / or currently determined position data of the respective transfer film element process and use this position data to control the movement of at least the film transfer mechanism.
  • the predetermined position data is determined at least based on a predetermined distance between the individual transfer film elements.
  • the method to include the following further steps: Registration of positions of register marks using at least one reading device, the register marks being designed to identify the position of the individual transfer film elements and at least one register mark in the area of the respective transfer film element on the transfer film is arranged, and supply of the determined current Position data of the register marks to the computing and control device for controlling the movement of at least the film transfer unit.
  • the computing and control device controls a feed roller of the film transfer unit in such a way that a running speed of the transfer film is set and controlled by a movement of the feed roller.
  • the film transfer unit comprises at least one transfer means with at least one cliché or stamp for pressing the transfer film elements onto the application areas and the transfer means and the at least one transfer component are coupled to one another via a virtual guide axis. It is also possible for the computing and control device to also control the movement of the transmission component based on the determined position data of the register marks.
  • the only figure shows a schematic perspective view of a rotary printing device according to the invention.
  • the single figure shows an example of a schematic perspective view of a rotary printing device 10 according to an exemplary embodiment.
  • the rotary printing device 10 comprises a transfer component 20, which in the present case is designed as a transfer roller, that is to say as a roller for transferring the adhesive 100.
  • the transfer component 20 is also referred to below as a transfer roller.
  • the rotary printing device 10 includes a film transfer unit 30, which is designed to arrange transfer film elements 92 on the application areas 82 provided with adhesive 100.
  • the film transfer unit 30 includes a transfer means 32 with several clichés or stamps 34.
  • the clichés 34 can preferably be made of flexible plastic, which means that the clichés 34 can be used particularly flexibly. Using the clichés 34, the transfer film elements 92 can be pressed onto the application areas 82 and thus pressed. It can be seen that a counter-pressure roller 40 presses the web 80 against the transfer film 90 and the transfer medium 32.
  • the transfer film elements 92 represent respective individual parts, which can be separated from a transfer film residue 94 of a transfer film 90 and pressed onto the respective application areas 82 provided with adhesive 100 by means of the transfer agent 32, in order to thereby arrange the respective transfer film elements 92 on the respective application areas 82 and thereby connecting the transfer film elements 92 at the respective application areas 82 with the web 80 to be printed.
  • the transfer film remainder 94 has corresponding empty spaces 96.
  • the transfer film 90 is rolled up on a transfer film roll 98, as can be seen in the figure, and is unrolled from the transfer film roll 98 in a clocked and register-controlled manner in order to arrange the transfer film elements 92 on the application areas 82 provided with adhesive 100. It can be seen that in order to identify the position of the individual transfer film elements 92, there is at least one register mark 14 in the area of the respective transfer film element 92 on the transfer film 90 is arranged. The positions of the register marks are registered by means of a reading device 16, with the determined position data of the register marks 14 being fed to a computing and control device 70 for controlling the movement of at least the film transfer unit 30.
  • the design of the reading device 16 is known and can include optical and/or radio-based position detection and detection. Other techniques for position detection are also conceivable.
  • the computing and control device 70 of the rotary printing device 10 is therefore used to control, in particular for register control, for example of the film transfer unit 30.
  • the computing and control device 70 can in particular be used to completely register the rotary printing device 10.
  • the rotary printing device 10 is designed overall for register-controlled cold foil coating of the application areas 82 with the transfer foil elements 92.
  • the computing and control device 70 controls a feed roller 18 of the film transfer unit 30 in such a way that a running speed of the transfer film 90 is set and controlled by a movement of the feed roller 18.
  • the film transfer unit 30 includes a storage container 36, which receives or surrounds the transfer film 90 when the feed roller 18 is braked or pulled back and forth.
  • the possible direction of movement of the storage container 36 is shown with a movement arrow 38.
  • the rotary printing device 10 is also designed to transfer holograms, i.e. three-dimensional images of objects, to the respective application areas 82 by means of the transfer film elements 92.
  • the respective transfer film elements 92 can be designed as respective hologram elements.
  • the transfer means 32 and the transfer component 20 are arranged in such a way that the web 80 to be printed is moved without contact between the transfer means 32 and the web over a predetermined length of the web 80, which can also be referred to as the free path length of the web 80, of a maximum of 6 m Transmission component 20 can be guided.
  • the web length corresponds to a section of the web 80 over which no forces are exerted on the web 80, i.e. over which the web 80 comes into contact, for example, neither with the transfer means 32 nor with the transfer component 20 (here: transfer roller).
  • the transfer means 32 and the at least one transmission component 20 are coupled to one another via a virtual master axis. Furthermore, it can be seen that empty spaces 42 are formed between the clichés or stamps 34 of the transfer medium 32. These empty spaces 42 can be used to reposition the transfer film 90 relative to the application areas 82 if necessary.
  • the rotary printing device 10 comprises a drying device.
  • the drying device can also be controlled using the computing and control device 70.
  • the rotary printing device 10 also includes an adhesive application device 22, which is designed to apply the adhesive 100 to the transfer component 20 and additionally or alternatively directly to the respective application areas 82.
  • the adhesive application device 22 can be designed to apply the adhesive 100 directly to the web 80 and additionally or alternatively to the transfer component 20 (transfer roller) by flexographic printing, jet printing, gravure printing, screen printing and additionally or alternatively by offset printing.
  • the adhesive application device 22 comprises an application roller 24, which can be designed as an anilox roller, and a doctor blade 26, which can form a chamber doctor blade system.
  • the adhesive application device 22 can in particular be designed as a so-called flexographic printing unit.
  • the squeegee is 26 connected via a line 27 to an adhesive container 28 of the adhesive application device 22.
  • the adhesive 100 can thus be conveyed from the adhesive container 28 via the line 27 and the doctor blade 26 can thus be supplied with the adhesive 100.
  • the rotary printing device 10 is in particular set up to carry out the cold foil coating in a clocked manner depending on the respective distances A between application areas 82 arranged on the web 80 to be printed.
  • the respective distances A can also be referred to as clocking distances. Overall, this enables the register-controlled, clocked cold foil coating of the application areas 82 with the transfer foil elements 92 using the rotary printing device 10.
  • the adhesive 100 is first transferred to the application areas 82 of the web 80 to be printed using the transfer component 20 of the rotary printing device 10. Subsequently, in the method, the transfer film elements 92 are arranged on the application areas 82 provided with adhesive 100 using the film transfer unit 30 of the rotary printing device 10, the film transfer unit 30 being controlled using the computing and control device 70 of the rotary printing device 10. The register-controlled cold foil coating of the application areas 82 with the transfer foil elements 92 is carried out using the rotary printing device 10.
  • the holograms can be applied overall via the transfer film elements 92 on the web 80, in particular on the application areas 82.
  • the transfer film elements 92 are applied to the web 80 in a register-controlled manner using the rotary printing device 10, in other words registered.
  • the rotary printing device 10 makes it possible to place the respective transfer film elements 92 in register, so to speak, and thus in a register-controlled manner, precisely on the respective application areas 82 of the web 80. This is made possible by the arrangement of the register marks 14 in the area of the respective transfer film elements 92.
  • the transfer component 20, which is designed here as a transfer roller, and the transfer means 32, which is designed here as a transfer roller, can be operated by means of respective servo drives of the rotary printing device 10, which are not shown here, the servo drives via the virtual master axis, which can also be referred to as a virtual axis, or via a electrical axis can be coupled to each other.
  • the transfer means 32 of the film transfer unit 30 and the transmission component 20 are advantageously coupled to one another via the virtual master axis.
  • the servo drives and thereby the transmission component 20 and the transfer means 32 can be coupled to one another via the virtual master axis, so that the servo drives and thereby the transmission component 20 and the transfer means 32 can work together in the register.
  • the transfer component 20 designed as a transfer roller and the transfer means 32 designed as a transfer roller also have the same outer circumference on respective cylindrical surfaces (the transfer roller or the transfer roller), on which the transfer component 20 and the transfer means 32 come into contact with the web 80 .
  • the transfer component 20 designed as a transfer roller can apply the adhesive 100 as a dispersion, as a reactive adhesive and/or as a two-component adhesive.
  • the adhesive 100 can be water-based, solvent-based and additionally or alternatively UV-curing (curing under UV radiation).
  • the adhesive 100 applied to the respective application areas 82 is dried by means of a drying device (not shown) between the transfer component 20 and the transfer agent 32, whereby the adhesive 100 becomes more viscous and adheres to the web 80, while the web 80 is in one direction indicated by an arrow clarified direction of movement 12, which can also be referred to as web travel, is moved along the transmission component 20 and along the transfer means 32.
  • the transfer film elements 92 arranged on the application areas 82 and thereby adhering to the web 80 can be further overprinted inline or offline.
  • the present rotary printing device 10 makes it possible to transfer the transfer film elements 92 to the web 80 in a particularly targeted manner while the web 80 is moved in the direction of movement 12, which can also be referred to as the running direction.
  • the transfer film elements 92 In order to arrange the transfer film elements 92 on the respective application areas 82 and thereby connect them to the web 80, particularly little pressure is required to press the transfer film elements 92 onto the application areas 82, in contrast to hot foil coating, which requires high web movement speeds and high temperatures - no high temperatures or low movement speeds in the direction of movement 12 are required to connect the transfer film elements 92 with the web 80 at the respective application areas 82.
  • adverse effects that occur during hot foil coating can be avoided. These effects include, for example, undesirable, and in particular difficult to overprint, deep impressions on the edges of webs to be printed by cold foil coating.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (15)

  1. Dispositif d'impression par rotative (10) pour l'enduction de film à froid de zones d'application (82) prédéfinies sur une bande (80) à imprimer, comportant :
    au moins un composant de transfert (20) pour transférer de l'adhésif (100) sur les zones d'application (82) de la bande (80),
    au moins un mécanisme de transfert de film (30) conçu pour agencer des éléments de film de transfert (92) agencés sur au moins un film de transfert (90), sur les zones d'application (82) pourvues d'adhésif (100), et
    au moins un dispositif de calcul et de commande (70) pour commander le mouvement au moins du mécanisme de transfert de film (30), le dispositif de calcul et de commande (70) étant conçu pour recevoir des données de position prédéfinies et/ou actuellement établies de l'élément de film de transfert (92) respectif, les traiter et commander le mouvement au moins du mécanisme de transfert de film (30) sur la base de ces données de position,
    le mécanisme de transfert de film (30) comprenant au moins un moyen de transfert (32) ayant au moins un cliché ou un tampon (34) pour presser les éléments de film de transfert (92) sur les zones d'application (82), et le moyen de transfert (32) et le au moins un composant de transfert (20) étant couplés l'un à l'autre sur un axe directeur virtuel.
  2. Dispositif d'impression par rotative (10) selon la revendication 1,
    caractérisé en ce que
    les données de position prédéfinies sont établies au moins sur la base d'une distance prédéfinie entre les éléments de film de transfert (92) individuels.
  3. Dispositif d'impression par rotative (10) selon la revendication 1 ou 2,
    caractérisé en ce que
    le dispositif d'impression par rotative (10) comprend au moins un lecteur (16) pour l'enregistrement de positions de marques de repère (14) et les marques de repère (14) sont formées de manière à indiquer la position des éléments de film de transfert (92) individuels, au moins une marque de repère (14) étant respectivement agencée sur le film de transfert (90), dans la zone de l'élément de film de transfert (92) respectif, et
    les données de position actuelles établies des marques de repère (14) étant fournies au dispositif de calcul et de commande (70) afin de commander le mouvement au moins du mécanisme de transfert de film (30).
  4. Dispositif d'impression par rotative (10) selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif de calcul et de commande (70) commande un rouleau de pré-tension (18) du mécanisme de transfert de film (30) de telle sorte qu'une vitesse de défilement du film de transfert (90) est réglée et contrôlée par un mouvement du rouleau de pré-tension (18).
  5. Dispositif d'impression par rotative (10) selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif de calcul et de commande (70) commande en outre le mouvement des composants de transfert (20) sur la base des données de position actuelles établies des marques de repère (14).
  6. Dispositif d'impression par rotative (10) selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif d'impression par rotative (10) est conçu pour transférer des hologrammes sur les zones d'application (82) respectives au moyen des éléments de film de transfert (92).
  7. Dispositif d'impression par rotative (10) selon l'une des revendications 1, 5 ou 6,
    caractérisé en ce que
    le au moins un moyen de transfert (32) et le au moins un composant de transfert (20) sont agencés de manière à guider la bande (80) à imprimer sur une longueur de bande de la bande (80) d'au plus 6 m sans contact entre le au moins un moyen de transfert (32) et le au moins un composant de transfert (20).
  8. Dispositif d'impression par rotative (10) selon l'une des revendications 1 ou 5 à 7,
    caractérisé en ce que
    le dispositif d'impression par rotative (10) comprend un dispositif de séchage pour sécher l'adhésif (100) appliqué sur la bande (80) à imprimer entre le au moins un moyen de transfert (32) et le au moins un composant de transfert (20).
  9. Dispositif d'impression par rotative (10) selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif d'impression par rotative (10) comprend un dispositif d'application d'adhésif (22) conçu pour appliquer de l'adhésif (100) sur le au moins un composant de transfert (20) et/ou sur les zones d'application (82).
  10. Dispositif d'impression par rotative (10) selon la revendication 9,
    caractérisé en ce que
    le dispositif d'application d'adhésif (22) est conçu pour appliquer l'adhésif (100) par impression flexographique, impression par jet, impression en héliogravure, impression en sérigraphie et/ou impression offset.
  11. Procédé pour faire fonctionner un dispositif d'impression par rotative (10), en particulier pour l'enduction de film à froid de zones d'application (82) prédéfinies sur une bande (80) à imprimer, comprenant au moins les étapes suivantes consistant à :
    transférer de l'adhésif (100) sur les zones d'application (82) de la bande (80) sur la base d'au moins un élément de transfert (20) du dispositif d'impression par rotative (10) ;
    agencer les éléments de film de transfert (92) sur les zones d'application (82) pourvues d'adhésif (100) sur la base d'au moins un mécanisme de transfert de film (30) du dispositif d'impression par rotative (10) : et
    commander le mouvement au moins du mécanisme de transfert de film (30) au moyen d'un dispositif de calcul et de commande (70) du dispositif d'impression par rotative (10), le dispositif de calcul et de commande (70) étant conçu pour recevoir des données de position prédéfinies et/ou actuellement établies de l'élément de film de transfert (92) respectif, les traiter et commander le mouvement au moins du mécanisme de transfert de film (30) sur la base de ces données de position,
    le mécanisme de transfert de film (30) comprenant au moins un moyen de transfert (32) ayant au moins un cliché ou un tampon (34) pour presser les éléments de film de transfert (92) sur les zones d'application (82), et le moyen de transfert (32) et le au moins un composant de transfert (20) étant couplés l'un à l'autre sur un axe directeur virtuel.
  12. Procédé selon la revendication 11,
    caractérisé en ce que
    les données de position prédéfinies sont déterminées au moins sur la base d'une distance prédéfinie entre les éléments de film de transfert (92) individuels.
  13. Procédé selon la revendication 11 ou 12,
    caractérisé en ce que le procédé comprend les étapes supplémentaires suivantes consistant à :
    enregistrer des positions de marques de repère (14) au moyen d'au moins un lecteur (16), les marques de repère (14) étant formées de manière à indiquer la position des éléments de film de transfert (92) individuels et au moins une marque de repère (14) étant respectivement agencée sur le film de transfert (90) dans la zone de l'élément de film de transfert (92) respectif ; et
    fournir les données de position actuelles établies des marques de repère (14) au dispositif de calcul et de commande (70) pour commander le mouvement au moins du mécanisme de transfert de film (30).
  14. Procédé selon l'une des revendications 11 à 13,
    caractérisé en ce que
    le dispositif de calcul et de commande (70) commande un rouleau de pré-tension (18) du mécanisme de transfert de film (30) de telle sorte qu'une vitesse de défilement du film de transfert (90) est réglée et contrôlée par un mouvement du rouleau de pré-tension (18).
  15. Procédé selon l'une des revendications 11 à 14,
    caractérisé en ce que
    le dispositif de calcul et de commande (70) commande en outre le mouvement du composant de transfert (20) sur la base des données de position établies des marques de repère (14).
EP21202605.8A 2020-10-14 2021-10-14 Dispositif d'impression rotative et procédé de fonctionnement d'un dispositif d'impression rotative Active EP3984746B1 (fr)

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US20100051165A1 (en) * 2008-08-28 2010-03-04 Tombs Thomas N Electrographic digitally patterning of metal films
FI126606B (fi) * 2012-05-15 2017-03-15 Walki Group Oy Menetelmä eri painoväreillä tehtävien painatusten tarkaksi kohdistamiseksi rotaatiopainossa
DE102014108767A1 (de) 2013-07-02 2015-01-08 manroland sheetfed GmbH Produktion mit Takteinrichtung für den Kaltfolientransfer
CN104275925B (zh) * 2014-09-28 2018-01-19 厦门前润科技有限公司 定位冷烫系统
DE102015221214A1 (de) 2015-10-29 2017-05-04 Pawellek Siebdruck GmbH Kaltfolientransferverfahren, Kaltfolientransfervorrichtung und Druckmaschine

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