JP2012532769A - Method and apparatus for creating structured layers - Google Patents

Abstract

  The present invention relates to a method and apparatus for producing a structured layer on a sheet material in a processing machine. It is an object of the present invention to improve the method and apparatus so that the machine can be used more flexibly. This problem is solved by placing the varnish layer on the substrate in a device for deforming the surface having a press gap (10) in the attaching device (B) formed by the film transfer device. In the gap (10), the structural layer is pressed onto the substrate coated with the varnish layer. This pressing takes place only in the impression cylinder (2) and in a further cylinder (1, 30). Next to the press gap (10), the base material coated with the structural layer and the varnish layer can be synchronously conveyed on the impression cylinder (2) while receiving irradiation for drying. . Next, the structural surface is separated and discharged from the substrate in the discharge gap (11).

Description

  The present invention relates to a method and an apparatus as described in the independent claims for creating a structured layer on a sheet material in a processing machine.

  A number of methods and apparatus are known for processing printed and varnished printed sheets (sheet materials) using the cold film transfer method.

  Such a method and apparatus is known from US Pat. No. 6,057,086, in which a cold film material and a printing machine using this material are described. The sheet material processing machine shown there is provided with a paper feeding device and a paper delivery device, and a plurality of printing devices and one coating device are arranged between these devices. In at least one of these printing devices, the adhesive pattern is applied using a lithographic printing method. This adhesive pattern is applied by a cold printing method and shows a specific image providing pattern. A film guide is provided in a coating apparatus having an impression cylinder and a transfer cylinder following the printing apparatus. In this film guide configuration, the cold film material is guided from the rollers through the printing gap of the coating device between the impression cylinder and the transfer cylinder, which functions as a press gap, and the remaining cold film material exits the coating device. After that, it is wound up again on the discharge side.

  In Patent Document 2, a step of applying a curable varnish layer on a substrate (printed material), a step of pressing the surface of the treated film into a varnish layer that is still wet, and the film are pressed into the varnish layer A transparent coating process is disclosed having a step of curing the varnish layer in between, a step of peeling the film from the varnish layer after the varnish layer is cured. A machine configuration therefor is disclosed, the machine configuration comprising a front printing unit or coating unit for transferring a curable varnish layer to a substrate, and a rear unit on this unit, A printing unit or coating unit is included for pressing the film surface into a still wet varnish layer. The mechanical configuration further includes a curing unit for curing the varnish layer while the film is pressed against the varnish layer or substrate, and a substrate transport system for the coated substrate and film. The film is peeled off from the varnish layer after the varnish is cured by the transport system. The film pressed on the varnish layer adheres to the varnish layer due to the adhesiveness or adhesive force of the varnish, and a guide roller that realizes film pressing on the varnish layer on the printed material is disposed downstream. The film (which was not required) is peeled from the substrate after passing through the guide rollers.

  Patent Document 3 discloses a varnishing unit that is placed after one printing unit, and a printing press that has a holographic post-processing unit that is placed after the varnishing unit. This holographic post-processing unit has a casting film having a hologram surface, which can be operatively connected to the sheet guide cylinder in synchronism using a feeding device. The holographic post-processing unit also has a pair of rollers that press the holographic surface of the casting film against the sheet material being guided and mounted on the sheet guide cylinder in a manufacturing run. . Also, these two rollers can be suspended, in which the casting film does not contact the sheet material. Between these two rollers, an ultraviolet (UV) irradiation device that emits ultraviolet rays to the sheet material is disposed.

  Patent Document 4 develops the embodiment of Patent Document 3 by pressing a transfer film against a sheet material. At this time, the gripper holding the sheet material on the sheet guide cylinder is retracted inside the sheet guide cylinder while the transfer film is pressed.

  Patent Document 5 develops the embodiments of Patent Document 4 and Patent Document 3 because the UV irradiation device can move in a direction toward or away from the sheet guide cylinder. At this time, the UV irradiation apparatus is movable together with the casting film so as to move away from or approach the sheet guide cylinder.

European Patent No. 0659520 International Patent No. 20080884191 Specification German Patent No. 102006021069 German Patent No. 102007034302 Specification German Patent No. 102008 Specification

  An object of the present invention is to make the method and apparatus as described above more flexible.

  The above problems are solved by the features of claims 1 and 2. Developments can be seen from the dependent claims.

  In order to process the sheet material, a surface of the sheet material is first coated with a varnish layer on which the structure is to be provided. Next, a structural layer or a structural film with a structural layer, and a varnish already formed in the press gap of the application device formed by a sheet guide cylinder, in particular an impression cylinder and a cylinder such as a plate cylinder or a rubber blanket cylinder, for example. Layered sheet material is fed. At this time, since the force applied to the surface is applied only on the structural layer or the structural film with the structural layer only in the press gap, the surface structure is transferred to the varnish layer. After passing through the press gap, the sheet material with the varnish layer and the structural layer or the structural film with the structural layer are closely overlapped at the contact angle X to guide the sheet material. Is conveyed in the conveying direction. A sheet material with a varnish layer and a sheet material that is guided on the impression cylinder while the structural layer or the structural film with the structural layer disposed thereon passes the contact angle X in the transport direction. No additional power is added to the. This is because the necessary contact is already made by the force on the surface in the pre-press gap. Therefore, after the surface structure of the structure layer or the structure film (with structure layer) is transferred to the varnish layer on the sheet material in the press gap, the sheet material having the varnish layer and the structure layer is the front edge. Is mounted on the impression cylinder while being fixed to the gripper, and is only transported or guided in the transport direction. Thereby, the structural film or the structural layer pressed against the sheet material (with varnish layer) in the press gap is conveyed in the conveying direction on the impression cylinder in synchronization with the sheet material (strictly overlapping).

  After passing through the press gap in the transport direction, the sheet material provided with the varnish layer and the structural film or structural layer is further irradiated or dried at the contact angle X of the sheet guide cylinder. This irradiation or drying is preferably effected immediately after passing through the press gap. At this time, at least the varnish layer on the sheet material is irradiated or dried in a form embossed by the structural film or the structural layer. At this time, a curing / drying process is started in the varnish layer and is performed as much as possible.

  A structured varnish in which there is a discharge gap after the contact angle X in the conveying direction, in which a structured layer with a structured surface or a structured film with a structured layer is guided through a sheet guide cylinder The sheet material with the layer can be peeled off and the sheet material with the structured varnish layer can continue to be conveyed on the impression cylinder. A structural layer with a structured surface or a structured film with a structured layer is peeled off from the structured varnish layer on the sheet material, so that the plastic forming process within the structured varnish layer, i.e. The replication of the surface structure of each structural layer ends. The structured varnish layer is solidified substantially stably by the irradiation or drying action of the irradiation / drying source.

  The direction changing means for discharging the used structural layer or the structural film is preferably fixedly arranged on the frame. This turning means functions only as a web guide for the structural layer or film to be discharged and does not contact the sheet material with the impression cylinder and the structured varnish layer for guiding the sheet material.

  In addition, an additional processing unit for performing embossing, cutting, punching, or the like can be additionally provided in such an attaching device as necessary.

It is an attaching apparatus figure of a 1st embodiment. FIG. 4 is a further arrangement view of the attaching device. FIG. 4 is a further arrangement view of the attaching device. It is a figure of the structure roller for attaching devices.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  A processing machine for processing the sheet material 6 preferably includes one sheet feeding device, one device, and a plurality of printing devices C as viewed from the conveyance direction 3 of the sheet material 6. The processing machine can additionally be provided with at least one varnishing device A if necessary.

  One such printing device C is an impression cylinder 2 configured as a sheet guide cylinder, here a cylinder 1 configured as a rubber blanket cylinder, a plate cylinder / plate cylinder 19, an inking device 20, and the necessary If so, a dampening device 21 is provided. A second irradiation / drying source 9 can also be assigned to each impression cylinder 2 after the printing gap formed by the rubber blanket cylinder 1 and the impression cylinder 2. The plurality of further printing devices C are configured with substantially the same structure and can have a similar irradiation / drying source 9.

  The varnishing device A has at least one impression cylinder 2 for guiding the sheet material 6, and is connected to the impression cylinder 2, here a cylinder 1 which is configured as a plate cylinder or a rubber blanket cylinder. ing. The barrel 1 of each varnishing device A is operatively connected to a metering device 17. Each impression cylinder 2 can be assigned a second irradiation / drying source 9 after the varnish gap formed by the impression cylinder 1 and impression cylinder 2. The second irradiation / drying source 9 arranged in the printing device C and varnishing device A can be configured as an ultraviolet (UV) dryer.

A transfer cylinder 18 is disposed between the printing apparatuses C and between one printing apparatus C and one varnishing apparatus A. The impression cylinder 2 and the transfer cylinder 18 are sheet guide cylinders equipped with sheet holding means, preferably a gripper for fixing the sheet edge.
The gripper of the sheet guide cylinder, in particular the impression cylinder 2 and the transfer cylinder 18, can be a conventional gripper protruding from the outer surface of the impression cylinder 2 or the transfer cylinder 18. Alternatively, these grippers can be arranged in the outer surface, including the cover on the outer surface of the sheet guide cylinder 2 or 18. Alternatively, these grippers can also be temporarily movable inside the sheet guide cylinder 2, 18, in particular the impression cylinder 2, at least when passing through the printing gap or varnish gap or press gap 10. it can.
In the first configuration, all plate cylinders / plate cylinders 19 can be integrated into the gear train of the main drive of the printing press. In the second configuration, all plate cylinders / plate cylinders 19 are mechanically decoupled from the main drive (with gear train) at least during printing operations, and are individually driven for printing operations or for set-up, respectively. Connected to the device.

The processing machine has, for example, a plate cylinder, which is here a cylinder 1, and a basic varnishing device B in the basic configuration, a metering device 17, if necessary, and a sheet as an impression cylinder 2. It has a paper guide cylinder. Preferably, one transfer cylinder 18 is placed in front of the impression cylinder 2. For the purpose of forming the varnish layer structure, or alternatively for the function of cold film transfer, the metering device 17 is separated from at least the assigned plate cylinder (cylinder 1) and is preferably not in contact. To be done.
After completion of varnish application or varnish layer structure formation, or end of cold film transfer, and structural film or structural layer material 7 is removed from press gap 10 formed by cylinder 1 and impression cylinder 2, metering The device 17 can again be functionally connected to the plate cylinder 1 and the attaching device B can be set again as a conventional varnishing device.
Alternatively, the application device B can in the basic construction be a printing device having a rubber blanket cylinder, here a plate cylinder / plate cylinder 19, implemented as the cylinder 1, and at least one inking device 20. For the function of varnish layer formation or cold film transfer, the plate cylinder / plate cylinder 19 is separated from at least the assigned rubber blanket cylinder 1. After the coating is finished and the structural film or structural layer material 7 is removed from the press gap 10 formed by the rubber blanket cylinder 1 and the plate cylinder / plate cylinder 19, the plate cylinder / plate cylinder 19 is removed from the rubber blanket cylinder. 1 can be functionally connected to the inking device 20, and the attaching device B can be set again as a printing device.

  FIG. 1 shows in particular a printing device C as a coating device, which comprises here a cylinder 1 configured as a rubber blanket cylinder 1, a plate cylinder / plate cylinder 19, an inking device 20, and if necessary. The dampening device 21 is configured. An impression cylinder 2 for guiding the sheet material 6 is assigned to the rubber blanket cylinder 1. If necessary, a second irradiation / drying source 9, for example a UV dryer, can be arranged after the place where the rubber blanket cylinder 1 and the impression cylinder 2 are in contact in the conveying direction 3. The coating device configured as printing device C guides the varnish coating from the inking device 20 onto the impression cylinder 2 through the printing plate and the rubber blanket cylinder 1 fixed to the plate cylinder / plate cylinder 19. It can be applied on the sheet material 6. Alternatively, the plate cylinder / plate cylinder 19 and the rubber blanket cylinder 1 can be separated. In this case, the varnish is transferred from a (additional) metering device 17 which can be brought into and out of contact with the rubber blanket cylinder 1 onto a plate fixed to the rubber blanket cylinder 1 and applied onto the substrate.

FIG. 2 shows an attaching device B, in which a printing device C having the same function is placed in the transport direction 3 for varnish coating. Alternatively, varnishing device A having the same function can be placed in the pasting device B instead of the printing device C for varnish coating.
The attaching device B includes a sheet discharge device D that is installed immediately after, and is preferably incorporated. This sheet discharge device D has a transport device 22 that circulates endlessly. The transport device 22 transports the sheet material 6 in the direction of the discharge device pile 23 and discharges it there. For this purpose, it has means for holding each sheet material 6. The conveying device 22 is placed immediately after the impression cylinder 2 of the attaching device B in the conveying direction 3. If necessary, the sheet delivery device D can further comprise a second irradiation / drying source 9.

The applicator B has an impression cylinder 2 and a cylinder 1 forming a press gap 10, which are applied to a sheet material 6 and a structural layer or a structural film 7 (with a structural layer) with a varnish layer applied thereto. It has a means for generating an acting force on the surface. The structural layer of the structural film 7 can have a regular, irregular or stochastic structure. If necessary, the structural layer (structural film 7) can also be produced directly in the processing machine using an apparatus. For this purpose, the attachment device B can also comprise, for example, a laser device for generating a structural layer.
As the sheet material 6, paper, cardboard, corrugated cardboard, and film can be adopted. At this time, the sheet material 6 can be (preliminarily) processed or pasted. The cylinder 1 can be provided with a cylinder gap that is operatively connected to the sheet holding means arranged in the adjacent impression cylinder 2 (sheet guide cylinder 2). The means for generating the force on the surface can be a gear mechanism and / or a bearing, for example to adapt to the thickness of the sheet material 6 and / or the thickness of the structural layer or structural film 7 And in order to adjust the press force in the press gap 10, the cylinder 1 can be allowed to change position.

  The sheet material 6 coated with the structural layer or the structural film 7 (with the structural layer) and the varnish layer can be conveyed in the conveying direction 3 on the impression cylinder 2 synchronously at the contact angle X after the press gap 10. is there. In order to harden the varnish layer at a distance from the impression cylinder 2 that guides the sheet material 6 with the varnish layer and the structural layer or the structural film 7 (with the structural layer) in the region of the contact angle X A first irradiation / drying source 8 is located nearby. A discharge gap 11 is disposed after the contact angle X in the transport direction 3. In the discharge gap 11, the structured layer or the structured film 7 (with the structured layer) having a structured surface can be peeled from the sheet material 6 having the structured varnish layer, and the sheet material 6 Can continue to be conveyed on the impression cylinder 2 with the structured varnish layer.

The individual or all irradiation / drying sources 8, 9 can preferably be implemented as UV dryers, IR dryers or other dryers, especially considering the type of varnish.
In a further embodiment, at least the first irradiation / drying source 8 can be configured in the attachment device B as an LED (light emitting diode) based UV irradiation / drying source 8. Such an LED irradiation / drying source 8 has a width at least over the format width and possibly extends in the longitudinal direction in the transport direction 3. Desirably, the UV irradiation / drying source 8 comprises UV-LEDs, for example UV-LED irradiation devices 34, which can be individually actuated across the format width and / or in the longitudinal direction, ie the conveying direction 3 of the sheet material 6. And irradiation from there is directed to the sheet material 6. Desirably, the radiation of the UV / LED irradiation device 34 emitted by the UV / LED may be directed to the region of the sheet material 6 where the varnish layer (UV curable varnish layer) is attached, if necessary. it can.
The use of the LED-based UV irradiation / drying source is not limited to the first irradiation / drying source 8, but at least the second irradiation / drying source 9 in the sheet delivery device D is for after-cure. Similarly, it can be configured as an LED-based UV irradiation / drying source 9. By using the UV / LED irradiation device 34, heat input into the sheet material 6 is preferably relatively small. If necessary, only a specific UV / LED can be operated for spot irradiation. is there.

  In the transport direction 3, a direction changing roller 15 for discharging the used structural layer or the structural film 7 (with the structural layer) is arranged after the discharge gap 11. A discharge gap 11 is formed together with the impression cylinder 2 without being in contact with the sheet material 6.

  A UV-drying varnish layer is applied onto the sheet material 6 using one printing device C placed in front of the attaching device B, a varnishing device A, or a varnishing machine incorporated in the printing device C. The The sheet material 6 varnished (completely or partially) is pressed against a structural layer or a structural film 7 having a structural layer in the printing gap (press gap 10) of the next applicator B, A surface structure, preferably a fine relief is provided on the contact surface of the structural layer 7 or the structural film 7 having the structural layer with the sheet material 6 (with varnish).

Such special films (structural film / structural layer 7) are known and are used in various applications.
The plastic surface structure or relief thus transferred to the varnish layer can then exhibit specific holographic and haptic effects by the action of appropriate light refraction.
In order to transfer the desired surface structure or the desired relief to the varnish layer in detail, the varnish layer mounted on and attached to the sheet material 6 and the structural layer or the structural film 7 (with the structural layer) While in contact, the varnish needs to be dried by irradiation, preferably UV irradiation. At this time, the varnish layer is dried through the structural layer or the structural film 7 (with the structural layer). It is after that the sheet material 6 and the structural layer or the structural film 7 (with the structural layer) are separated.

  In order to ensure the transfer of the surface structure or relief to the varnish layer, the structural layer or the structural film (with structural layer) 7 is further defined on the impression cylinder 2 after the printing gap (press gap 10). In this case, it is necessary to guide in the section, that is, the contact angle X, and irradiate with ultraviolet rays or ultraviolet rays. In the transport direction 3, there is a discharge gap 11 after the contact angle X. In the discharge gap 11, a structured layer having a structured surface or a structured film 7 with a structured layer guides on the sheet guide cylinder 2. The structured varnished sheet material 6 can be peeled off, and the structured varnished sheet material 6 can continue to be conveyed on the impression cylinder 2. A plastic forming process in the structured varnish layer by peeling off the structured layer with structured surface or the structured film 7 with structured layer from the structured varnish layer on the sheet material 6; That is, the replication of the surface structure of each structural layer 7 is completed. The structured or varnish layer is solidified substantially in shape by the irradiation or drying action of the irradiation / drying source 8, that is, sufficiently hardened. A structural film 7 with a structural layer is made possible by Vorratsas.

This coating process can be carried out in the applicator B as follows.
FIG. 1 shows an arrangement according to the invention. In the printing device C, the varnish layer (full or partial) is used directly or with a metering device 17 which is arranged there and in some cases releasably attached, It is applied on the sheet material 6 to be guided on the sheet guide cylinder 2. The sheet material 6 that has been varnished, with the varnish layer still deformable, being fed by the sheet guide cylinders 2 and 18 to the sheet guide cylinder 2 of the attaching device B, which is placed later, And it is conveyed to the press gap 10. Here, the structure layer or the structure film 7 (with the structure layer) passes from the film stock roll 13 through the press gap 10 between the rubber cylinder 1 and the impression cylinder 2 and then through the direction changing roller 15 to the film collection roll 14. Led to. The film stock roll 13 and the film collection roll 14 are supported on a rotatable star wheel or alternatively supported in a film stocker in front of, behind or next to the processing machine.
Alternatively, the structural film 7 with the structural layer can be guided while circulating endlessly by a roller.
Furthermore, the structural film 7 with a structural layer can be conveyed forward or backward.
If necessary, the attaching device B can be provided with a cleaning device for cleaning the structural film 7 with the structural layer. In that case, the conveyed structural film 7 with a structural layer is made to contact a washing | cleaning apparatus temporarily.
The structural layer or the structural film 7 (with the structural layer) and the sheet material 6 coated with varnish are fed together into the press gap 10. At this time, only in the press gap 10, a force applied to the surface is generated for the sheet material 6 and the structural layer (with the structural layer) 7 having the varnish layer. After passing through the press gap 10, the structural layer or the structural film 7 (with the structural layer) and the sheet material 6 guided on the impression cylinder 2 and coated with the varnish layer are synchronized with each other at the contact angle X. 2 is conveyed in the conveyance direction 3.

  After the press gap 10, at least the varnish layer is irradiated or dried, in particular UV irradiation. At this time, the sheet material 6 to which the varnish layer is attached and the structure layer or the structure film 7 are exactly overlapped at the contact angle X, and are guided in the conveying direction 3 on the sheet guide cylinder 2 of the attaching device B. Is done. A discharge gap 11 is provided at the end of the contact angle X. In this discharge gap 11, the structural layer or the structural film 7 is peeled off from the varnish layer adhering on the sheet material 6 and discharged. The sheet material 6 with the varnish layer is guided in the transport direction 3 on the sheet guide cylinder 2 (impression cylinder).

  At this time, the drying of the varnish layer is assigned to the impression cylinder 2 between the press gap 10 and the direction change roller 15, and an appropriate first irradiation / drying source 8 corresponding to the installation space, for example, UV LED This is done by the dryer 8. In an alternative embodiment, reflection / focusing of the UV light of an existing UV intermediate dryer is performed so that it is irradiated onto the structural layer or the composite of the structural film (with structural layer) 7 and the varnish layer. Can do.

  When the structural layer or the structural film 7 (with the structural layer) is guided through the discharge gap 11, the direction changing roller 15 does not directly contact the sheet guide cylinder 2 or the impression cylinder 2, that is, the sheet guide cylinder 2. Or it is not pressed against the impression cylinder 2. Therefore, the direction change roller 15 forms a discharge gap 11 for the structure layer or the structure film 7 (with the structure layer). Creating a structural emboss on the varnish layer applied on the sheet material 6 using the structural layer or the structural film 7 is the press gap 10 of the attaching device B between the rubber cylinder 1 and the impression cylinder 2. Since this is already done, the direction change roller 15 can assist in gently peeling the structural layer or the structural film 7 (with the structural layer) from the previously structured varnish surface.

A similar embodiment is illustrated in FIG. Here, the attaching device B is disposed in a module placed behind the printing device C, and the sheet material 6 is directly sent from the module to the sheet discharge device D. In the basic structure, this module can be a varnish module.
Here, the varnish supply to the sheet material 6 can be performed on the structural layer or the structural film 7 by the metering device 17. For example, the varnish metering device 17 is brought into contact with the structured surface of the structural layer or the structural film 7 in front of the press gap 10 in the conveying direction 3 to perform varnish transfer to the structural layer or the structural film 7. it can. At this time, the barrel 1 of the attaching device B can be operatively connected to the attaching roller of the metering device 17.
Alternatively, the varnish supply can also be carried out directly in the front printing device C or in some cases using an abutable varnishing machine (metering device 17) incorporated. .

  In the alternative configuration of FIG. 3, a structural roller 30 (see FIG. 4 for a detailed view; see the dotted line portion of FIG. It is in contact with the impression cylinder 2. In this configuration, the contact angle X for the structural layer or the structural film 7 on the circumference of the impression cylinder 2 can be minimized. For this purpose, the structural roller 30 is formed on a roller core 31 made of a UV radiation transmissive roller body 32, and a UV / LED irradiation device 34 is disposed in the circumferential direction and the major axis direction in the roller body 32. In a suitable arrangement or in other forms. Since the surface of the roller jacket 33 of the structural roller 30 is configured to be relatively soft (such as a sleeve), a given over-pressurization to the impression cylinder 2 is possible. The (surface) drying of the varnish layer on the sheet material 6 to retain the embossed relief structure takes place after the press gap 10, ie while the construction roller 30 rotates.

In one alternative embodiment, a UV intermediate dryer 8 directed at the varnish layer is used, in which case the structural roller 30 rather than the UV LED illuminator 34 incorporated with proper focus setting or isolation. A conventional UV intermediate dryer 8 can be used which is irradiated through.
For clarity, FIG. 4 shows that the dryer irradiation passes through the structural roller 30 to the varnish layer.

When the structure embossed as a fine relief is directly provided on the surface of the ultraviolet light transmitting sleeve or the roller jacket 33 of the structure roller 30, the structure roller 30 is provided in the conventional UV varnishing apparatus A. It can also be used directly on the impression cylinder 2 (see reference numeral 30 shown by a solid line in FIG. 3).
In that case, the structure roller 30 can be provided with a suitable cleaning device to ensure the structure forming function, and the cleaning device keeps the fine relief in the roller jacket 33 clean, thereby providing a varnish layer. The embossing action inside can always be done with perfect quality.

  Irradiation / dryer sources 8, 9 can radiate heat to adjacent components or component groups, which can be configured to be temperature adjustable using a cooling device. For example, the redirecting roller 15, the guide roller 16, the structural roller 30, and the cylinder 1 can be cooled if necessary, acting on the structural layer or the structural film 7. At this time, cooling from the inside and / or the outside can be applied to each component or component group.

In order to finally dry the structured varnish layer on the sheet material 6, the sheet delivery device D has at least one irradiation / drying source 9, for example a UV irradiation / drying source, preferably UV / LED irradiation. A device 34 can be arranged.
If necessary, the structural layer or the structural film 7 can be circulated endlessly or can be unwound / wound using the film stock roll 13 and the film recovery roll 14.
In order to avoid a charging event, a discharge device for discharging the structural layer or the structural film 7 can be provided in the attaching device B.
In order to replace or replace each structural film 7 with a structural layer, the attaching device B can be provided with an elevating device or an operating device.
In addition to the printing device C and / or the varnishing device A and the at least one application device B, the processing machine can comprise a device for performing a cold film transfer on the sheet material 6. Such an apparatus for cold film transfer can be placed in front of or behind the attaching apparatus B in the transport direction 3. For example, a cold film can be transferred onto a sheet material in an apparatus for cold film transfer, followed by surface structure formation of a varnish layer on the sheet material. At this time, a varnish layer to be structured can be placed on the cold film material that is already firmly attached on the sheet material 6.

  In addition to the first irradiation / drying source 8 adjacent to the impression cylinder 2, a further irradiation / drying source can be arranged in the cylinder 1. The irradiation produced by this further irradiation / drying source acts at least on the varnish layer on the sheet material 6 in the region of the press gap 10 through the contour of the cylinder 1. For this purpose, the material that the cylinder 1 has at least in the circumferential direction allows the emitted radiation to pass in the direction of the varnished sheet material 6 and the structural layer or film 7.

In order to carry out the embossing process for the varnish layer, it is usually necessary to set the gripper protruding from the circumference of the impression cylinder 2 deeper or to properly process the gripper back. Alternatively, the gripper can be movable inside the impression cylinder 2 at least when passing through the press gap 10.
Otherwise, the protruding gripper spine will contact the structural layer or structural film 7 (with structural layer) or, in the alternative, the structural roller 30 each time the cylinder gap in the impression cylinder 2 rotates. It will be damaged for a long time. In order to avoid this, it is necessary to lift the structural layer or the structural film 7 (with the structural layer) or the structural roller 30 in accordance with the timing of the movement of the machine. However, it is impossible to accurately transfer the relief to details.

  The film guide and drying according to the invention described above can optionally be introduced. Alternatively, cold film transfer using a tangential film guide is also possible.

1 cylinder (plate cylinder / rubber blanket cylinder)
2 Impressor 3 Transport direction 6 Sheet material 7 Structure film / Structure layer 8/9 Irradiation / drying source 10 Press gap (print gap / varnish drawing gap)
DESCRIPTION OF SYMBOLS 11 Discharge gap 13 Film stock roll 14 Film collection | recovery roll 15 Direction change roller 16 Guide roller 17 Metering device 18 Transfer cylinder 19 Plate cylinder / Plate cylinder 20 Ink apparatus 21 Dampening apparatus 22 Conveyance apparatus 23 Paper discharge apparatus pile 30 Structure roller 31 Roller core 32 Roller body 33 Roller jacket 34 UV / LED irradiation device A Varnishing device (flexographic printing device)
B Attachment device C Printing device D Sheet paper delivery device X Contact angle

Claims (10)

In a processing machine, a method for producing a structured layer on a sheet material (6), the processing machine being a device for coating the sheet material (6) with a varnish layer And (A) followed by a device (B) for deforming the surface of the varnish layer, an impression cylinder (2) for guiding the sheet material (6) in the transport direction (3) and one further A press gap (10) is formed from the body (1, 30), and the sheet material (6) to which the varnish layer is attached is guided through the press gap (10), and the sheet A structural layer (7) is disposed opposite the surface of the paper material (6), and the structural layer (7) is coated with the varnish layer by a certain force in the press gap (10). In a method, pressed onto a paper material (6),
Only in the press gap (10), a force applied to the surface is applied to the sheet material (6) provided with a varnish layer to form the structural layer (7).
Next to the press gap (10), the sheet material (6) coated with a varnish layer guided on the structural layer (7) and the impression cylinder (2) has a contact angle (X ) In the conveying direction (3) on the impression cylinder (2) synchronously,
In that case, at least the varnish layer is irradiated or dried, and
In the transport direction (3), after the contact angle (X), the structural layer (7) is peeled off and discharged from the varnish layer in the discharge gap (11), and the structured varnish layer is attached. Method according to claim 1, characterized in that the sheet material (6) is subsequently guided over the impression cylinder (2) in the transport direction (3). An apparatus for producing a structured layer on a sheet material (6) in a processing machine, the machine for coating a varnish layer on said sheet material (6) (A) and a post-attaching device (B), the attaching device (B) comprising an impression cylinder (2) for guiding the sheet material (6) in the conveying direction (3) and one Further cylinders (1), which form press gaps (10), the sheet material (6) with a varnish layer applied to the surface, and the sheet material (6) The structural layer (7) opposite the surface of the structure is guided through the press gap (10) and is structured by a force in the press gap (10) to form the varnish layer. Layer (7) can be pressed onto the sheet material (6) coated with the varnish layer In one device,
Only the impression cylinder (2) and the cylinder (1) forming the press gap (10) are applied to the surface acting on the sheet material (6) and the structural layer (7) provided with a varnish layer. Having means to generate force,
Next to the press gap (10), the structural layer (7) and the sheet material (6) coated with the varnish layer are synchronized with each other in the impression cylinder (2) at a contact angle (X). The top can be transported in the transport direction (3),
In order to cure the varnish layer, in the region of the contact angle (X), the gap between the sheet material (6) coated with the varnish layer and the impression cylinder (2) leading to the structural layer (7) An irradiation / drying source (8) is located adjacent to each other,
A discharge gap (11) is arranged after the contact angle (X) in the transport direction (3), and the structural layer (7) having a structured surface is structured in the discharge gap (11). The sheet material (6) with the structured varnish layer is peelable from the sheet material (6) having a varnish layer formed thereon, and the sheet material (6) with the structured varnish layer is conveyed on the impression cylinder (2) (3) The apparatus characterized by being able to convey.   In the attaching device (B), a structural film (7) having the structural layer (7) is arranged, and the structural film (7) is a sheet material (6) coated with a varnish layer. The device according to claim 2, characterized in that it can be conveyed in the press gap (10) between the impression cylinder (2) and the cylinder (1).   A structural roller (30) that forms the press gap (10) together with the impression cylinder (2) is disposed in the attaching device (B), and the structural roller (30) is at least one, There is a roller jacket (33) that is transparent to the irradiation, and at least one irradiation device for generating an irradiation action that passes through the structural roller (30) in the press gap (10). Device according to claim 2, characterized in that   Device according to claim 2, characterized in that the cylinder (1) has a cylinder gap.   3. Device according to claim 2, characterized in that the cylinder (1) is connected to means for generating a force on the surface and to a position changing means of the cylinder (1).   Device according to claim 2, characterized in that an irradiation / drying source (9) is arranged in the sheet delivery device (D).   Device according to claim 2, characterized in that a discharge device for discharging the structural layer or the structural film (7) is provided in the attaching device (B).   3. An apparatus for transferring a cold film to the sheet material (6) is arranged in front of or behind the attaching device (2) in the transport direction (3). The device described.   Device according to claim 2, characterized in that an irradiation / drying source is arranged in the barrel (1).

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