DE102010029423A1 - Method and device for producing a structured layer - Google Patents

Abstract

The invention relates to a method and an apparatus for producing a structured layer on a sheet material in a processing machine.
The object of the invention is to improve a method and a device such that the machine can be used more flexibly.
This is achieved by arranging a lacquer layer on a substrate on the surface deforming device with a press nip (10) in an application unit (B) formed by the film transfer unit, in which a structural layer is pressed onto the substrate coated with the lacquer layer. The pressure takes place only on the impression cylinder (2) and the other cylinder (1, 30). Following the press nip (10), the structural layer and the substrate coated with the lacquer layer can be transported synchronously on the impression cylinder (2) during a drying irradiation. Then, the structural surface of the substrate in a discharge gap (11) is separated and discharged.

Description

The The invention relates to a method and an apparatus for generating a structured layer on a sheet material in a processing machine according to the preambles of the independent claims.

to Finishing of printed, varnished sheets (sheet material) by a cold foil transfer method are several methods and devices known.

A method and a device of this kind is out EP 0 569 520 B1 known, wherein a cold foil material and a printing device using this material are described. In this case, a sheet material processing machine is shown which has a feeder and a boom, between which two units printing units and a coating unit are arranged. In at least one of the printing units, an adhesive pattern is applied by means of the planographic printing process. This adhesive pattern is applied in a cold printing process and has a specific imaging subject. In a printing unit following the coating unit with an impression cylinder and a transfer cylinder a film guide is provided. This is designed in such a way that a cold foil material is guided by a roller acting as a press nip printing nip of the coating unit between the impression cylinder and the transfer cylinder and the remaining cold foil material is wound up again on the outlet side after leaving the coating unit.

The WO 2008/084191 A1 discloses a transparent coating process comprising the steps of applying a curable lacquer layer to a substrate, pressing a surface treated film surface against the still wet lacquer layer, curing the lacquer layer while the film is being pressed thereon, and separating the film from the lacquer layer after the paint layer is cured. For this purpose, a machine configuration is disclosed which comprises an upstream printing unit or a coating unit for the transfer of a curable lacquer layer to the substrate and a downstream printing unit or a coating unit for pressing the film surface against the still wet lacquer layer. Furthermore, the machine configuration comprises a curing unit for curing the lacquer layer while the film is pressed against this or the substrate and a substrate transport system for the coated substrate and the film, which separates the film from the lacquer layer after the lacquer has cured. The pressed against the coating layer film adheres by the tack or adhesion of the paint on the paint layer and in addition, a guide roller is arranged downstream, which realizes the Anpresskontakt the film with the paint layer on the substrate. The separation of the (unnecessary) film from the substrate takes place after passing through the guide roller.

DE 10 2006 021 069 A1 discloses a printing press with a printing unit downstream painting unit and a painting unit downstream holographic finishing unit. The holographic finishing unit comprises a film former having a hologram surface, which can be brought into operative connection by means of a feed device synchronously with a sheet guiding cylinder. The holographic finishing unit further comprises a pair of rollers which, in the manufacturing operation, press the hologram surface of the film blank onto the sheet material resting on the sheet guiding cylinder. Both rollers are further movable to an interruption condition with the film blank being out of contact with the sheet material. Between both rollers, an ultraviolet (UV) exposure device is arranged, which emits UV rays to the sheet material.

DE 10 2007 034 302 A1 makes the execution according to DE 10 2006 021 069 A1 Continue by pressing a transfer film onto the sheet material. In this case, the sheet material holding the sheet guiding cylinder gripper can be sunk during the pressing of the transfer film in the interior of the sheet guiding cylinder.

DE 10 2008 forms the statements according to DE 10 2007 034 302 A1 and DE 10 2006 021 069 A1 to that effect, in that the UV exposure device is movable in the direction of the sheet guiding cylinder or away from it. In this case, the UV exposure device is movable away from the sheet guiding cylinder with the film molding or away.

task The invention is a method and an apparatus of the initially mentioned type to perform more flexible.

The The object is achieved by the features of claim 1 and 2 solved. Further developments result from the dependent ones Claims.

For refining sheet material, the sheet material is first coated with a lacquer layer on the respective side, which is to obtain a structure. Subsequently, in a press nip an application work, formed by a sheet guiding cylinder, especially an impression cylinder, and a cylinder, such as a forme cylinder or blanket cylinder, a structural layer or a structural film with a structural layer and the sheet material supplied with already applied paint layer. In this case, only in the press nip a surface-related force is applied to the structure layer or the structure film with a structure layer, so that their surface structure is transferred into the paint layer. After passing through the press nip, the sheet material with the lacquer layer and the structural layer or the structural film with a structural layer in a wrap X X congruent, ie superimposed, transported on the sheet material leading sheet guiding cylinder in the conveying direction. While the sheet material with lacquer layer and the structural layer or structural film with structural layer arranged thereon passes the wrap angle X in the conveying direction, no additional force is applied to the sheet material guided on the impression cylinder, since the required connection was already generated in the upstream press nip by means of a surface-related force. Following the already mentioned press nip, in which the surface structure of the structural layer or structural film (with structural layer) has been transferred to the lacquer layer on the sheet material, the sheet material with lacquer layer and the structural layer is thus fixed to grippers only on the impression cylinder, resting on the front edge transported or guided in the conveying direction. The pressed in the press nip to the sheet material (with resist layer) structural film or the structural layer is thus synchronously transported (congruent) with the sheet material in the conveying direction on the impression cylinder.

additionally is in the conveying direction after passing through the press nip the sheet material with lacquer layer and structural foil or the structural layer in Wrap angle X of a sheet guiding cylinder a Exposed to radiation or drying. Preferably, the action takes place the radiation or drying immediately after leaving the press nip. At least while the paint layer is in the of the structural film or the structural layer embossed form on the sheet material exposed to radiation or drying. This is a curing / drying process stimulated in the lacquer layer and carried out as far as possible.

In The conveying direction follows the wrap angle X an outlet gap in which the structured layer with structured surface or the structural film with a structural layer of the on the sheet guiding cylinder Guided sheet material with structured lacquer layer is separable and the sheet material with the structured lacquer layer on the impression cylinder is further transportable. With the separation of Structured layer with structured surface or the Structure film with structural layer of the on the sheet material textured lacquer layer is the molding process, d. H. the replica of the surface structure of the respective Structural layer, finished in the textured lacquer layer. through Influence of radiation or drying from a radiation / drying source the structured lacquer layer is substantially dimensionally stable solidified.

Prefers are deflection means for the removal of the structural layer used or structured film fixed to the frame. These deflecting serve only the web guide of the ablated structure layer or structural film and are leading to the sheet material Impression cylinder and the sheet material with structured lacquer layer out of contact.

additional If necessary, such a application plant, a further processing unit, for. B. for embossing, cutting or punching, be downstream.

The Invention will hereinafter be an embodiment be explained in more detail. Here are shown schematically:

1 an application plant in first training,

2 another arrangement of an application plant,

3 another arrangement of an application plant and

4 a structural roller for an application plant.

A processing machine, preferably for the finishing of sheet material 6 , includes in conveying direction 3 of the bow material 6 considers a feeder and a plant and several printing units C. If necessary, the processing machine may additionally comprise at least one coating unit A.

Such a printing unit C comprises, designed as a sheet guiding cylinder impression cylinder 2 , a cylinder 1 - Formed here as a blanket cylinder -, a plate / form cylinder 19 , an inking unit 20 and if necessary, a dampening unit 21 , The respective impression cylinder 2 can after the pressure nip, formed from blanket cylinder 1 and impression cylinder 2 , a second radiation / drying source 9 be assigned. The further printing units C are designed substantially identical and can also such radiation / drying sources 9 exhibit.

A coating unit A comprises at least one sheet material 6 leading impression cylinder 2 , one with the impression cylinder 2 in Wirkver binding cylinder 1 , designed here as a forme cylinder or blanket cylinder. The cylinder 1 Each coating unit A is equipped with a metering device 17 in active connection. The respective impression cylinder 2 can after the paint gap, formed from cylinder 1 and impression cylinder 2 , a second radiation / drying source 9 be assigned. The arranged in the printing units C and coating units A second radiation / drying sources 9 can be designed as ultraviolet (UV) dryer.

Between printing units C and between a printing unit C and a coating unit A are transfer cylinders 18 arranged. The counterpressure 2 as well as the transfer cylinders 18 are sheet guiding cylinder with sheet holding means, preferably with grippers for fixing a sheet edge.

The grippers of the sheet guiding cylinder, especially the impression cylinder 2 as well as the transfer cylinder 18 , conventional, over the lateral surface (s) of the impression cylinder 2 or transfer cylinder 18 be protruding gripper. Alternatively, the grippers within the lateral surface (s) of the sheet guiding cylinder 2 respectively. 18 , including an elevator on the lateral surface, be arranged. Alternatively, the grippers at least on passage of a pressure, paint or press nip 10 into the interior of the sheet guiding cylinder 2 . 18 , in particular the impression cylinder 2 be temporarily movable.

All plate / form cylinder 19 can be integrated in a first training in the gear train of the main drive of the printing press. In a second embodiment are all plate / form cylinder 19 mechanically separated at least in the printing operation of the main drive (with gear train) and coupled in each case with a single drive for printing or for setting.

The processing machine comprises an application plant B, for example, in the basic structure of a conventional coating unit, which a form cylinder, here as a cylinder 1 , and if necessary, a metering device 17 , And a sheet guiding cylinder as impression cylinder 2 includes. The impression cylinder is preferred 2 a transfer cylinder 18 upstream. For lacquer layer structuring or alternatively the function of a cold foil transfer is the metering device 17 at least from the associated forme cylinder (cylinder 1 ) separated, preferably turned off.

After completion of the paint application or paint layer structuring or the cold foil transfer and removal of a structural film or structural layer material 7 from the press nip 10 formed from cylinder 1 and impression cylinder 2 , the metering device can 17 again with the form cylinder 1 brought into functional connection and the application unit B are used again as a conventional coating unit.

Alternatively, the application work B in the basic structure may also be a printing unit which has a blanket cylinder, here as a cylinder 1 executed, as well as a plate / form cylinder 19 and at least one inking unit 20 includes. For the function of the Lackschichtstrukturierung or cold foil transfer is the plate / form cylinder 19 at least from the associated blanket cylinder 1 separated. After completion of the application and removal of the structural film or structural layer material 7 from the press nip 10 , formed from blanket cylinder 1 and plate / form cylinder 19 , can the plate / forme cylinder 19 with inking unit 20 with the blanket cylinder 1 placed in functional connection and the application plant B are used again as a printing unit.

In 1 Among other things, as a commissioned work, a printing unit C is shown, which consists of a cylinder 1 , here as a blanket cylinder 1 trained, a plate / forme cylinder 19 , an inking unit 20 and if necessary a dampening unit 21 is formed. The blanket cylinder 1 is a sheet material 6 leading impression cylinder 2 assigned. If necessary, in the conveying direction 3 after the contact point of blanket cylinder 1 and impression cylinder 2 a second radiation / drying source 9 , For example, a UV dryer, be arranged. By means of the application unit designed as a printing unit C, starting from the inking unit 20 about one on the plate / form cylinder 19 fixed printing form and the blanket cylinder 1 Coat the paint on the impression cylinder 2 guided sheet material 6 be applied. Alternatively, between the plate / forme cylinder 19 and the blanket cylinder 1 a separation takes place. The paint is then transferred from one to the blanket cylinder 1 on / off (additional) metering device 17 on a blanket cylinder 1 transferred fixed plate and applied to the substrate.

In 2 the application plant B is shown, in the conveying direction 3 a printing unit C with the same function for the paint coating is arranged upstream. Alternatively, instead of the printing unit C, the coating unit B may be preceded by a coating unit A having the same function for the lacquer coating.

This application work B comprises a directly downstream, preferably integrated sheet delivery D. This sheet delivery D comprises an endlessly circulating conveyor 22 , which means for holding the respective sheet material 6 has for the purpose of promoting the sheet material 6 in the direction of a delivery pile 23 and storage on this. The conveyor 22 is in the conveying direction 3 directly to the impression cylinder 2 downstream of the application unit B. If necessary, the sheet delivery D can be another, second radiation / drying source 9 exhibit.

The application plant B comprises the press nip 10 forming impression cylinder 2 and cylinders 1 which means for producing a on the sheet material 6 with lacquer layer and on the structural layer or structural film 7 comprising surface-area force (having a structural layer). The structural layer of the structural film 7 can have a regular, irregular or stochastic structure. If necessary, the structural layer (structural film 7 ) are generated by a device directly in the processing machine. For example, the application plant B can have a laser device that generates the structure layer for this purpose.

As a sheet material 6 For example, paper, cardboard, corrugated or foil can be used, wherein the sheet material 6 can be (pre-) finished or laminated. The cylinder 1 may include a cylinder channel, which with on the adjacent impression cylinder 2 (Sheet guiding cylinder 2 ) arranged sheet holding means is in operative connection. The means for generating a surface-related force may be gear mechanisms and / or bearings, which also includes a change in position of the cylinder 1 For example, to adapt to the thickness of the sheet material 6 and / or to the thickness of the structural layer or structural film 7 and for adjusting the pressing force in the press nip 10 , allow.

Following the press nip 10 are the structural layer or structural film 7 (with structural layer) and coated with the lacquer layer sheet material 6 in a wrap angle X synchronously on the impression cylinder 2 in the conveying direction 3 transportable. In the region of the wrap angle X is the sheet material 6 with lacquer layer and structural layer or structural foil 7 (with structural layer) leading impression cylinder 2 at a distance from curing the lacquer layer, a first radiation / drying source 8th arranged adjacent. In conveying direction 3 is after the wrap angle X an outlet gap 11 is arranged. In this outlet gap 11 is the structural layer or structural film 7 (with structural layer) with structured surface of the sheet material 6 separable with the structured lacquer layer and the sheet material 6 is with the structured lacquer layer on the impression cylinder 2 can be transported further.

Single or all radiation / drying sources 8th ; 9 can be carried out in particular taking into account the nature of the paint as preferred UV dryer, IR dryer or other dryer.

In a further embodiment, at least the first radiation / drying source can be present in application plant B. 8th as UV radiation / drying source 8th be formed on an LED basis (Light Emitting Diode). Such a LED radiation / drying source 8th extends at least over the format width and possibly circumferentially in the conveying direction 3 , Preferably, the UV radiation / drying source 8th over the format width and / or in the circumferential direction, ie in the conveying direction 3 , the sheet material 6 individually activatable UV-LED, for example UV-LED spotlight 34 , whose emitted radiation is incident on the sheet material 6 is directed. Preferably, the radiation emitted by the UV LED radiation of the UV LED emitters 34 if necessary, on each of a resist layer (UV-curing lacquer layer) bearing areas of the sheet material 6 be directed.

The use of an LED-based UV radiation / drying source is not aimed at the first radiation / drying source 8th limited. Rather, at least one second radiation / drying source 9 in the sheet delivery D for post-curing as well as UV radiation / drying source 9 be formed on an LED basis. By means of the UV LED spotlight 34 can advantageously the heat input into the sheet material 6 remain relatively low and if necessary, only certain UV-LED can be activated for spot radiation.

In conveying direction 3 is after the outlet gap 11 a guide roller 15 for conveying off the used structural layer or structural film 7 (with structural layer), being out of contact with the sheet material 6 on the impression cylinder 2 stands while the outlet gap 11 with the impression cylinder 2 forms.

By means of a printing unit C upstream of the application unit B, coating unit A or a coating unit integrated in a printing unit C, a UV-drying lacquer layer is applied to the sheet material 6 applied. The varnished (full or partial) sheet material 6 is in the following nip (press nip 10 ) of the application unit B with a structural layer or a structural film carrying a structural layer 7 brought into contact, which on the contact side to the sheet material 6 (with lacquer) has a surface structure, preferably a fine relief.

Such special films (structural film / structural layer 7 ) are known and are used in different applications.

A in this way transferred to paint layers, molded Surface structure or a relief can then under action from suitable refractions to certain holographic and haptic effects.

In order to transfer the desired surface structure or the desired relief in detail to the lacquer layer, the lacquer must, during the contact between the on the sheet material 6 overlying adhesive lacquer layer and the structural layer or structural film 7 (With structural layer) by means of radiation, preferably from UV radiation, dried. The drying of the lacquer layer takes place through the structural layer or structural film 7 (with structural layer) through. Only then are sheet material 6 and structural layer or structural film 7 (with structural layer) separated.

In order to ensure the transfer of the surface structure or the relief to the lacquer layer, the structural layer or structural film must 7 (with structural layer) after the nip (press nip 10 ) nor a defined distance, ie a wrap angle X, on the impression cylinder 2 be guided while being irradiated with UV radiation or UV light. In conveying direction 3 follows the wrapping angle X of the outlet gap 11 in which the structural layer with a structured surface or the structural film with a structural layer 7 from that on the sheet guiding cylinder 2 guided sheet material 6 with structured lacquer layer is separable and the sheet material 6 with the structured lacquer layer on the impression cylinder 2 can be transported further. With the separation of structural layer with structured surface or the structural film with structural layer 7 from the on the sheet material 6 structured lacquer layer is the molding process, ie the replication of the surface structure of the respective structural layer 7 , finished in the textured lacquer layer. By exposure to radiation or drying from the source of radiation / drying 8th the structured lacquer layer is solidified substantially dimensionally stable, ie sufficiently hardened.

This coating process can be carried out at the application plant B as follows:
In 1 an arrangement according to the invention is shown. In the printing unit C is directly or by means of a arranged there and possibly abgestellt attached dosing 17 a paint layer (full or partial) on the on the sheet guiding cylinder 2 guided sheet material 6 applied. The lacquered sheet material 6 becomes with still deformable lacquer layer by sheet guiding cylinder 2 and 18 to the downstream sheet guiding cylinder 2 of the application unit B and to the press nip 10 transported. Here is a structural layer or structural film 7 (with structural layer) from a film supply roll 13 through the press nip 10 between rubber cylinder 1 and impression cylinder 2 and then via a guide roller 15 to a foil collecting roll 14 guided. The foil supply rolls 13 and foil collecting rolls 14 can be stored on a rotatable roller star or alternatively in a foil storage in front of or behind the processing machine.

Alternatively, the structural film with structural layer 7 Be carried out endlessly rolling over rollers.

Furthermore, the structural film with a structural layer 7 be transported forwards or backwards.

If necessary, the application work B may include a cleaning device for the purpose of cleaning the structure film with a structural layer 7 , In the process, the transported structural foil with structural layer 7 temporarily brought into contact with the cleaning device.

The structural layer or structural film 7 (with structural layer) as well as the lacquer-coated sheet material 6 be together the press nip 10 fed. It is exclusively in the press nip 10 a surface-related force on the sheet material 6 with lacquer layer and the structural layer or structural film 7 (with structural layer) generated. After the passage of the press nip 10 become the structural layer or structural film 7 (with structural layer) and that on the impression cylinder 2 Guided, coated with a varnish sheet material 6 in the wrap X synchronously on the impression cylinder 2 in the conveying direction 3 transported.

Following the press nip 10 At least the lacquer layer is exposed to radiation or drying, in particular UV radiation. Here are the sheet material 6 with lacquer layer and the structural layer or structural film 7 congruent in conveying direction 3 in a wrap angle X on the sheet guiding cylinder 2 the application plant B out. At the end of the wrap angle X is the outlet gap 11 provided and in this is the structural layer or structural film 7 from the on the sheet material 6 adherent paint layer separated and discharged and the sheet material 6 with the textured lacquer layer is on the sheet guiding cylinder 2 (Impression cylinder) in the conveying direction 3 dissipated

The drying of the lacquer layer takes place via a suitable first radiation / drying source corresponding to the installation space 8th For example, a UV-LED dryer 8th that is between the press nip 10 and the guide roller 15 the impression cylinder 2 assigned. In an alternative embodiment, the UV light of an existing intermediate UV dryer can be mirrored / focused in such a way that the radiation on the composite of structural layer or structural film 7 (with structure layer) and lacquer layer acts.

In the leadership of the structural layer or Transparency texture 7 (with structural layer) in the outlet gap 11 is the guide roller 15 not in direct contact with the sheet guiding cylinder 2 or impression cylinder 2 thus, does not exert any pressure on it. This is done by the guide roller 15 the outlet gap 11 for the structural layer or structural film 7 (with structural layer) formed with. As the structure embossing by means of structural layer or structural film 7 in the on the sheet material 6 applied lacquer layer already in the press nip 10 of application unit B between the blanket cylinder 1 and the impression cylinder 2 is done, the guide roller 15 the gentle detachment of the structural layer or structural film 7 (with structural layer) of the now structured paint surface support.

In 2 a comparable embodiment is shown. Here, the application plant B is arranged on a printing unit C downstream module, of which the sheet material 6 is forwarded directly to a sheet delivery D. The module can be a paint module in the basic structure.

The paint feed to the sheet material 6 can here on the structural layer or structural film 7 through a metering device 17 respectively. For example, in the conveying direction 3 in front of the press nip 10 a metering device 17 for paint with the structured surface of the structural layer or structural film 7 be brought into contact and a paint transfer to the structural layer or structural film 7 respectively. Here, the cylinder 1 the application unit B with an applicator roller of the metering device 17 be in operative connection.

Furthermore, alternatively, the paint supply in the upstream printing unit C directly or by means of an optionally adjustable integrated painting device (metering device 17 ) respectively.

In an alternative arrangement according to 3 is a structural roller 30 (Detailed presentation in 4 ; for variant described here see the dashed representation in 3 ) in contact with an impression cylinder 2 a coating unit A, which is usable as application plant B. The wrap angle X for the structural layer or structural film 7 on the circumference of the impression cylinder 2 can be minimized in this arrangement. This structure roller 30 is for this purpose on a roll core 31 from a permeable to UV radiation roller body 32 constructed in which UV LED spotlight 34 cast in a suitable arrangement in the circumferential and longitudinal direction or integrated in another form. The structure roller 30 is on the surface of her roll mantle 33 comparatively soft (sleeve o. A.) formed, so that a defined suppression of the impression cylinder 2 is possible. The (pre-) drying of the lacquer layer on the sheet material 6 , which serves to maintain the embossed relief structure, takes place behind the press nip 10 and thus becomes during roll over of the pattern roll 30 executed.

In an alternative embodiment, a UV intermediate dryer aligned with the lacquer layer is used 8th used, being used instead of the integrated UV LED spotlight 34 by appropriate focusing or foreclosure, a through the structure roller 30 radiating conventional UV intermediate dryer 8th can be used.

For clarification is in 4 the penetration of the structure roller 30 indicated by the dryer radiation to the paint layer.

If the permeable sleeve for UV light or the roll shell 33 the structure roller 30 directly on its surface is provided with a structure, which is pronounced as mikrofeines relief, the structure roller can 30 also directly in a conventional UV coating unit A on the impression cylinder 2 are used (see reference numeral 30 in 3 in full lines).

To ensure the function of structuring can then on the structure roller 30 a suitable cleaning device may be provided, which said microfine relief in the roll shell 33 Keeps clean and thus allows the embossing effect in the paint layer at any time with full quality.

From the radiation / dryer sources 8th . 9 can emanate heat radiation to adjacent components or assemblies, which may be formed by means of cooling temperature-controlled. For example, those with the structural layer or structural film 7 operatively connected guide rollers 15 , the guide rollers 16 , the structure roller 30 and if necessary, the cylinder 1 be cooled. The cooling of the inside and / or outside can act on the respective component or assembly.

For final drying of the structured lacquer layer on the sheet material 6 can in sheet delivery D at least one radiation / drying source 9 For example, a UV radiation / drying source, preferably a UV LED spotlight 34 be arranged.

If necessary, the structural layer or structural film 7 endlessly circulating or by means of foil supply roll 13 and foil collecting roll 14 be trained off / wound up.

In order to avoid charging processes, a discharge device may be provided in the application unit B which contains the structural layer or structural film 7 discharges.

The application plant B can be a hoist or a handling device for replacing or exchanging the respective structural film with a structural layer 7 ,

A processing machine can, in addition to printing units C and / or coating units A and at least one application unit B, a device for cold foil transfer to the sheet material 6 include. Such a device for cold foil transfer can in the conveying direction 3 the application plant 2 be ahead or downstream. For example, in a device for cold foil transfer, a cold foil can be transferred to the sheet material and subsequently a surface structuring of the lacquer layer takes place on the sheet material. The lacquer layer to be structured can also already be applied to the sheet material 6 adherent cold foil material can be applied.

In addition to the impression cylinder 23 adjacent, first radiation / drying source 8th may be another radiation / drying source inside the cylinder 1 be arranged. This further radiation / drying source generates radiation which is the contour of the cylinder 1 penetrates and in the area of the press nip 10 at least on the lacquer layer on the sheet material 6 acts. For this purpose, the cylinder 1 at least in the circumferential direction of a material which the initiated radiation in the direction of the sheet material 6 with paint and the structural layer or structural film 7 let pass through.

For the implementation of the process of embossing in the lacquer layer, it is necessary that normally over the circumference of the impression cylinder 2 lower protruding gripper or to edit the gripper backs in a suitable way. Alternatively, the grippers into the interior of the impression cylinder 2 at least at the passage of the press nip 10 be movable.

The protruding gripper backs would otherwise be the structural layer or structural film 7 (with structural layer) or in the alternative case, the structure roller 30 every time the cylinder channel is overrun in the impression cylinder 2 touch and thus permanently damage. To avoid this, the structural layer or structural film would have to be avoided 7 (with structural layer) or the structure roller 30 be raised to the beat of the machine run. A detailed transfer of the relief would not be possible.

The previously described film guide according to the invention and drying can be used optionally. The cold foil transfer with tangential film guide is still alternative possible.

LIST OF REFERENCE NUMBERS

1

cylinder (Mold / blanket cylinder)

2

Impression cylinder

3

conveying direction

6

sheet material

7

Structure foil / structural layer

8.9

Radiation / drying source

10

press nip (Pressure / Lackierspalt)

11

outlet gap

13

Film supply roll

14

Foil composite role

15

deflecting

16

guide roller

17

metering

18

transfer cylinder

19

Plate / form cylinder

20

inking

21

dampening

22

Conveyor

23

delivery pile

30

structure roll

31

roll core

32

roller body

33

roll shell

34

UV LED spotlight

A

coating unit (Flexographic)

B

application factory

C

printing unit

D

sheet delivery

X

Wrap angle

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0569520 B1 [0003]
• - WO 2008/084191 A1 [0004]
• - DE 102006021069 A1 [0005, 0006, 0007]
• - DE 102007034302 A1 [0006, 0007]
• - DE 102008 [0007]

Claims (10)

Method for producing a structured layer on a sheet material ( 6 ) in a processing machine, comprising means (A) for coating the sheet material ( 6 ) with a lacquer layer, and subsequently a device (B) deforming the surface of the lacquer layer, the sheet material ( 6 ) in the conveying direction ( 3 ) leading impression cylinder ( 2 ) and another cylinder ( 1 . 30 ) a press nip ( 10 ), through which the sheet material ( 6 ) is guided with the overlying lacquer layer, and wherein the surface of the sheet material ( 6 ) opposite a structural layer ( 7 ) is arranged, wherein in the press nip ( 10 ) the structural layer ( 7 ) by means of a force on the coated with the lacquer layer sheet material ( 6 ) is pressed, characterized in that exclusively in the press nip ( 10 ) a surface-related force on the sheet material ( 6 ) with lacquer layer and the structural layer ( 7 ) is generated, that following the press nip ( 10 ) the structural layer ( 7 ) and on the impression cylinder ( 2 ) guided, coated with a lacquer layer sheet material ( 6 ) in a wrap angle (X) synchronously on the impression cylinder ( 2 ) in the conveying direction ( 3 ), that at least the lacquer layer is exposed to radiation or drying and that in the conveying direction ( 3 ) after the wrap angle (X) in an outlet gap ( 11 ) the structural layer ( 7 ) is separated and removed from the lacquer layer and the sheet material ( 6 ) with the structured lacquer layer on the impression cylinder ( 2 ) in the conveying direction ( 3 ) is continued. Device for producing a structured layer on a sheet material ( 6 ) in a processing machine, comprising means (A) for coating the sheet material ( 6 ) with a varnish layer and a downstream application (B), with a sheet material ( 6 ) in the conveying direction ( 3 ) leading impression cylinder ( 2 ) and another cylinder ( 1 ), which has a press nip ( 10 ), whereby through the press nip ( 10 ) the sheet material ( 6 ) with a lacquer layer on the surface and one of the surface of the sheet material ( 6 ) opposite structural layer ( 7 ) and in the press nip ( 10 ) the structural layer ( 7 ) by means of a force on the coated with the lacquer layer sheet material ( 6 ) can be pressed for structuring the paint layer, characterized in that only the press nip ( 10 ) forming impression cylinder ( 2 ) and cylinders ( 1 ) Means for producing on the sheet material ( 6 ) with lacquer layer and the structural layer ( 7 ) surface-area force, that following the press nip ( 10 ) the structural layer ( 7 ) and the sheet material coated with the lacquer layer ( 6 ) in a wrap angle (X) synchronously on the impression cylinder ( 2 ) in the conveying direction ( 3 ) are transportable that in the region of the wrap angle (X) to the sheet material ( 6 ) with lacquer layer and structural layer ( 7 ) leading impression cylinder ( 2 ) at a distance to harden the lacquer layer, a radiation / drying source ( 8th ) is arranged adjacent and that in the conveying direction ( 3 ) after the wrap angle (X) an outlet gap ( 11 ) is arranged, in which the structural layer ( 7 ) with structured surface of the sheet material ( 6 ) is separable with structured lacquer layer and the sheet material ( 6 ) with the structured lacquer layer on the impression cylinder ( 2 ) in the conveying direction ( 3 ) is further transportable. Apparatus according to claim 2, characterized in that in the application work (B) one the structural layer ( 7 ) carrying structural film ( 7 ) is arranged, which together with the coated with a lacquer layer sheet material ( 6 ) through the press nip ( 10 ) between impression cylinder ( 2 ) and cylinders ( 1 ) is transportable. Apparatus according to claim 2, characterized in that in the application work (B) a structural roller ( 30 ) is arranged, which the press nip ( 10 ) with the impression cylinder ( 2 ) and that the structure roller ( 30 ) at least one roll shell permeable to the radiation ( 33 ) and that at least one radiator for generating a radiation effect by the structure roller ( 30 ) in the press nip ( 10 ) is provided. Device according to claim 2, characterized in that the cylinder ( 1 ) has a cylinder channel. Device according to claim 2, characterized in that the cylinder ( 1 ) with means for generating a surface-related force and a change in position of the cylinder ( 1 ) is coupled. Apparatus according to claim 2, characterized in that in the sheet delivery (D) a radiation / drying source 9 is arranged. Apparatus according to claim 2, characterized in that in the application plant (B) a discharge device for discharging the structural layer or structural film ( 7 ) is provided. Apparatus according to claim 2, characterized in that the application work ( 2 ) a device for cold foil transfer to the sheet material ( 6 ) in the conveying direction ( 3 ) is upstream or downstream. Device according to claim 2, characterized in that inside the cylinder ( 1 ) a radiation / drying source is arranged.

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