EP1676702B2 - Foil supplying for cold foil embossing - Google Patents

Abstract

The foil supply transfers layers on a printed sheet transparency according to a work order with a coating printed with an adhesive and a coating work (2). The coating work (2) contains an impression cylinder (4) and a press roll (3), which forms a common transfer gap (6). The transparency is conductible around the press roll (3), in such a manner that together with the coated side presented on the printed sheet with the impression cylinder (4) and under pressure with the printed sheet a transfer gap (6) is provided between the press roll and the impression cylinder (4). The layers after removal of the printed sheet and removal from the transfer gap (6) are removed from the transparency. The press roll has a smooth cover (10) and a mechanism is provided to reduce or abolition the adhesion of the surface of the cover opposite the transparency (5). An air film is provided to the transfer gap (6) for the production of an air layer between transfer foil (5) and surface of the printed sheet. An independent claim is included for a method.

Description

The invention relates to a method and a device for transferring imaging layers from a carrier film to printed sheets according to the preamble of patent claims 1 and 7.

It is known to produce metallic layers on printed sheets by means of a film transfer process. So is in the EP 0 569 520 B1 a printing material and a printing apparatus using this material are described. In this case, a sheet-processing machine is shown, which has a feeder and a boom, between 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 the printing unit following the coating unit with a counter-pressure cylinder and a press roller a film guide is provided. This is designed in such a way that a film strip or a transfer film is passed through the transfer nip of the coating unit between the impression cylinder and the press roll from a film supply roll. The foil strip is rewound on the outlet side after leaving the coating unit. The transfer film has a carrier layer on which imaging layers such as metallic layers, for example of aluminum, can be applied. Between the metallic layer and the carrier film, a separating layer is provided, which ensures that the metallic layer can be removed from the carrier layer.

When printing sheets are transported through the printing unit, each sheet is given an adhesive pattern. Thereafter, the sheet is passed through the coating unit, being brought by means of the press roller on the impression cylinder resting sheet with the film material in combination. In this case, the downwardly lying metallic layer enters into a close connection with the areas provided with adhesive on the printed sheet. After further transporting the printing sheet, the metallic layer adheres only in the area provided with the adhesive pattern. The carrier film is thus removed from the metallic layer in the region of the adhesive pattern. The used in this way transfer film is wound up again. The print sheet is laid out in the coated state.
It is known to use such coating units, for example in printing units of printing presses. A disadvantage of the known devices is that they are not flexible and that the consumption of transfer film is expensive.

The object of the invention is therefore to provide a device by means of which the transfer of an imaging layer, e.g. a metallization can be done safely, economically and accurately, the device should be easy to handle.

The solution to this problem arises in devices according to the features of claim 1, as well as in a method according to the features of claim 7.

Advantageously, a timing method is used to guide the transfer film, wherein the transfer sheet is separated during a clocking step by pneumatic means of the press roll.

To ensure the efficiency of the coating process can be provided to control the film feed such that the transfer film is then stopped when no transmission of the imaging or metallization takes place.

Advantageously, a control of the transfer film can be carried out such that, when passing through a cylinder channel receiving the grippers of the sheet-guiding impression cylinder, the film feed is stopped, wherein the press roll then passes in a sliding manner under the transfer film.

Furthermore, the film transport can be stopped when auxiliary functions such as washing or setting operations are carried out on the press.

In a further embodiment, the surface of the press roll may be provided with an elevated pressing surface contoured in outline, which is limited to the area to be coated. For this, a cut-out blanket, a plastic printing form or a stick-on press-on segment is suitable. As a result, the feed of the transfer film can be stopped in a very advantageous manner, even if the area to be coated is within the image area of the printed sheet.

A further improvement of the film utilization results from the fact that the transfer film is divided into one or more Teilfolienbahnen smaller width. In combination with the above-mentioned method, it is thus also possible to use different types of film side by side.

Within the sheet-processing machine receiving the coating unit, the coating unit can advantageously be placed anywhere on the machine. In this way, in the case of a printing press having a plurality of printing units, it is possible for imaging coatings or metallization layers to be applied both before, as well as after and also between the application of printing ink layers.

Advantageously, it is also possible to provide several coating units behind one another within a sheet-processing machine. Thus, the application of different imaging coatings or metallization layers within a subject can take place one after the other.

In the following the invention is illustrated in more detail with reference to figures.

Figur 1

eine grundsätzliche Darstellung einer Druckmaschine mit einer Folientransfereinrichtung,

Figur 2

den Aufbau Druckwerkes mit einer Folientransfereinrichtung und einer Folientaktung,

Figur 3

den Aufbau eines Druckwerkes mit einer vereinfachten Folientransfereinrichtung und Folientaktung, und.

Figur 4

den Aufbau eine Presswalze.

Showing:

FIG. 1

a basic representation of a printing press with a film transfer device,

FIG. 2

the structure of printing unit with a film transfer device and a film timing,

FIG. 3

the construction of a printing unit with a simplified film transfer device and film timing, and.

FIG. 4

the structure of a press roll.

• Ein Druckbogen wird zunächst mit einem bildgebenden Klebstoffmuster versehen (Auftragwerk 1).
• Danach wird im Folgedruckwerk gemeinsam mit einem Druckbogen eine Transferfolie 5 durch einen Transferspalt 6 geführt, wobei die Transferfolie 5 im Transferspalt 6 gegen den Druckbogen gepresst wird (Beschichtungswerk 2).
  Der Transferspalt 6 im Beschichtungswerk 2 wird durch eine Presswalze 3 und einen Gegendruckzylinder 4 gebildet. Diese können dem Drucktuchzylinder und dem Gegendruckzylinder eines Offsetdruckwerkes entsprechen.
  Weiterhin kann nachgeschaltet ein so genanntes Kalandrierwerk vorgesehen werden. Innerhalb des für den Folientransfer genutzten Beschichtungswerkes 2 ist eine Bahnführung für Transferfolien dargestellt.
  Die Transferfolien 5 sind mehrschichtig aufgebaut. Sie weisen eine Trägerschicht auf, auf der mittels einer Trennschicht eine bildgebende Schicht aufgebracht ist. Die Trennschicht dient dem erleichterten Abheben der bildgebenden Schicht von der Trägerschicht. Die bildgebende Schicht kann z.B. eine metallisierte Schicht oder eine Glanzschicht oder eine Texturschicht oder eine eingefärbte Schicht oder eine ein oder mehrere Bildmuster enthaltende Schicht sein.
  Die Folienvorratsrolle 8 ist dem Beschichtungswerk 2 auf der Seite der Bogenzuführung zugeordnet. Die Folienvorratsrolle 8 weist einen Drehantrieb 7 auf.
  Der Drehantrieb 7 wird zur kontinuierlichen geregelten Zuführung der Transferfolie zum Beschichtungs werk 2 benötigt und ist daher steuerbar. Weiterhin ist im Bereich der Folienzuführung eine Umlenk- bzw. Spannwalze vorgesehen. Damit wird die Folienbahn der Transferfolie immer in gleicher Spannung gegenüber der Presswalze 3 gehalten. Auf der ablaufseitigen Seite des Druckwerkes ist eine Foliensammelrolle 9 dargestellt. Auf der Foliensammelrolle 9 wird das verbrauchte Folienmaterial wieder aufgewickelt. Auch hier ist für die optimierte Produktion ein Drehantrieb 7 vorzusehen, der steuerbar ist. Im Wesentlichen könnte die Transferfolie 5 auch durch den Drehantrieb 7 auf der Ablaufseite bewegt und auf der Zulaufseite mittels einer Bremse straff gehalten werden.
  Der Transfervorgang der bildgebenden z.B. metallisierten Schicht auf das Druckpapier erfolgt in dem Transferspalt 6 zwischen der Presswalze 3 und dem Gegendruckzylinder. Die Presswalze 3 kann ein Drucktuchzylinder eines Offsetdruckwerkes sein.
  Die Presswalze 3 kann auch der Formzylinder eines Lackmodules sein. Wesentlich ist, dass die Oberfläche der Presswalze 3 also des Drucktuchzylinders bzw. Formzylinders mittels eines kompressiblen, dämpfenden Elementes ausgerüstet ist.

In FIG. 1 is a sheet-processing machine, here a printing press, shown, which consists of at least two printing units. The two printing units are used for the following purposes:

• A printed sheet is first provided with an imaging adhesive pattern (applicator 1).
• Thereafter, a transfer sheet 5 is passed through a transfer nip 6 in the following printing unit together with a printing sheet, wherein the transfer sheet 5 is pressed in the transfer nip 6 against the sheet (coating unit 2).
  The transfer nip 6 in the coating unit 2 is formed by a press roll 3 and an impression cylinder 4. These may correspond to the blanket cylinder and the impression cylinder of an offset printing unit.
  Furthermore, downstream of a so-called calendering be provided. Within the used for the film transfer coating 2 a web guide for transfer films is shown.
  The transfer films 5 have a multilayer structure. They have a carrier layer on which an imaging layer is applied by means of a release layer. The separating layer serves to facilitate lifting of the imaging layer from the carrier layer. The image-forming layer may be, for example, a metallized layer or a glossy layer or a texture layer or a colored layer or a layer containing one or more image patterns.
  The film supply roll 8 is assigned to the coating unit 2 on the sheet feed side. The film supply roll 8 has a rotary drive 7.
  The rotary drive 7 is required for continuous controlled feeding of the transfer film to the coating factory 2 and is therefore controllable. Furthermore, a deflecting or tensioning roller is provided in the region of the film feed. Thus, the film web of the transfer film is always held in the same voltage against the press roller 3. On the downstream side of the printing unit, a film collection roller 9 is shown. On the film collecting roll 9, the used film material is wound up again. Again, a rotary drive 7 is provided for the optimized production, which is controllable. In essence, the transfer film 5 could also be moved by the rotary drive 7 on the discharge side and kept taut on the inlet side by means of a brake.
  The transfer process of the imaging eg metallized layer on the printing paper takes place in the transfer nip 6 between the press roller 3 and the impression cylinder. The press roll 3 may be a blanket cylinder of an offset printing unit.
  The press roll 3 can also be the forme cylinder of a paint module. It is essential that the surface of the press roll 3 so the blanket cylinder or forme cylinder is equipped by means of a compressible, damping element.

The press roll 3 can be provided with a press fabric, for example as a plastic coating, comparable to a blanket or blanket. The press fabric 10 is held in a cylinder channel 11 to tensioning devices, as in FIG. 4 is shown. Here, the press roller 3 is formed as a rubber cylinder 13.

The press fabric 10 is equipped to improve the transmission properties in the transfer nip 6 with a targeted elasticity. This may optionally act in a compressible intermediate layer. This compressibility is preferably similar or less than in conventional blankets or blankets, which can also be used at this point.
The mentioned compressibility can be produced by means of a conventional compressible printing blanket. Furthermore, combined fabrics made of a hard blanket and a soft pad can be used.

Furthermore, a limited pressing surface can be provided directly on the press roll 3 or on the press fabric 10. This can be worked out of the surface of the press fabric 10 or it can be additionally attached as a partial surface of the material of the press fabric 10 on the press roller 3.

• Hierzu kann eine Steuerung der Transferfolie 5 derart erfolgen, dass beim Durchlaufen eines Greifer des bogenführenden Gegendruckzylinders 4 aufnehmenden Zylinderkanales der Folienvorschub angehalten wird. Die Greifer halten den Druckbogen auf dem Gegendruckzylinder 4. Auch die Presswalze 3 weist einen Zylinderkanal 11 auf. Im Bereich des Zylinderkanals erfolgt keine Pressung der Transferfolie 5 zwischen der Presswalze 3 (Drucktuchzylinder) und dem Gegendruckzylinder 4, da beide Zylinder diesen Zylinderkanal 11 aufweisen. Die Presswalze 3 läuft dann unter der Transferfolie 5 gleitend durch, während die Transferfolie 5 zwischen Presswalze 3 und Gegendruckzylinder 4 frei gespannt ist. Dieser Zustand dauert an bis am so genannten Druckanfang der Zylinderkanal 11 endet und die Transferfolie 5 erneut zwischen der Presswalze 3 und dem Gegendruckzylinder 4 unter Einschluss eines Druckbogens eingeklemmt wird. Dann wird die Transferfolie 5 weiter transportiert. Die Taktung des Folienvorschubes kann entsprechend einer notwendigen Beschleunigung bzw. Bremsung der Folienvorratsrolle 8 bzw. Foliensammelrolle 9 etwas früher beginnen bzw. aussetzen als dies die Kanalkanten des Zylinderkanals 11 vorgeben. Bei reaktionsschnellen Taktungssystemen über so genannte Tänzerwalzen 18, wie sie beispielhaft in Figur 1 eingezeichnet sind, ist die Steuerung der Drehantriebe 7 der Folienvorratsrollen 8 bzw. Foliensammelrolle 9 ggf. nicht erforderlich.
• Die zugehörige Vorrichtung beinhaltet aber grundsätzlich eine entsprechende Vorschubsteuerung für die Transferfolie 5, die dafür sorgt, dass wenigstens das zwischen der Presswalze 3 und dem Gegendruckzylinder 4 liegende Folienstück stillsteht, solange der Zylinderkanal 11 durchläuft.
• In einer weiteren Ausgestaltung kann als Oberfläche der Presswalze 3 eine konturierte Pressfläche vorgesehen sein. Dazu wird anstatt einer ganzflächigen Kunststoffschicht eine auf den zu beschichtenden Bereich begrenzte Pressfläche auf der Presswalze 3 eingesetzt. Hierfür kann etwa ein ausgeschnittenes Drucktuch, eine bebilderbare Kunststoffdruckform oder ein auf einer glatten Unterlage vorzugsweise lösbar zu befestigendes, ggf. aufklebbares oder magnetisch anbringbares, Andrucksegment die begrenzte Pressfläche tragend verwendet werden.
• Die Funktion dieser begrenzten Pressfläche ist, dass wie beim Durchlauf des Zylinderkanals 11 die Einklemmung der Transferfolie 5 nur dann gegeben ist, wenn die Pressfläche die Transferfolie 5 berührend den Transferspalt 6 durchläuft.

To ensure the economic efficiency of the coating process, it is provided that the film advance of the transfer film from the film supply roll 8 to the transfer nip 6 and the film collection roll 9 is controllable such that the transfer film 5 is stopped as far as possible if no transfer of the image-forming layer is to occur:

• For this purpose, a control of the transfer film 5 can be made such that the film feed is stopped when passing through a gripper of the sheet-guiding counter-pressure cylinder 4 receiving cylinder channel. The grippers hold the printed sheet on the impression cylinder 4. The press roll 3 has a cylinder channel 11. In the region of the cylinder channel, there is no pressing of the transfer film 5 between the press roller 3 (blanket cylinder) and the impression cylinder 4, since both cylinders have this cylinder channel 11. The press roll 3 then slidably passes under the transfer sheet 5, while the transfer sheet 5 passes between the press roll 3 and impression cylinder 4 is tensioned freely. This state continues until at the so-called pressure beginning of the cylinder channel 11 ends and the transfer sheet 5 is again clamped between the press roller 3 and the impression cylinder 4, including a sheet. Then, the transfer sheet 5 is further transported. The timing of the film feed can begin or suspend a little earlier than predetermine the channel edges of the cylinder channel 11 corresponding to a necessary acceleration or braking of the film supply roll 8 or film collecting 9. In reaction-fast timing systems via so-called dancer rollers 18, as exemplified in FIG. 1 are shown, the control of the rotary actuators 7 of the film supply rolls 8 and film collecting roll 9 may not be necessary.
• However, the associated device fundamentally includes a corresponding feed control for the transfer film 5, which ensures that at least the foil piece lying between the press roll 3 and the impression cylinder 4 is stationary as long as the cylinder channel 11 passes through.
• In a further embodiment, a contoured pressing surface can be provided as the surface of the press roll 3. For this purpose, instead of an all-over plastic layer, a pressing surface limited to the area to be coated is used on the press roller 3. For this purpose, for example, a cut-out printing blanket, an imageable plastic printing form or a pressure pad which can preferably be releasably fastened to a smooth base, possibly stickable or magnetically attachable, can be used to support the limited pressing surface.
• The function of this limited pressing surface is that as in the passage of the cylinder channel 11, the entrapment of the transfer film 5 is only given when the pressing surface, the transfer film 5 touching the transfer nip 6 passes.

A further improvement of the film utilization of the type described results from the fact that the transfer film 5 is divided into one or more Teilfolienbahnen lesser width. Thus, with appropriate control by means of the device or devices for timing the film feed each of the sub-film webs, the utilization of the transfer film 5 can be improved even in zonally different lengths coating areas within an arc. For this purpose, each partial film web is conveyed only exactly in the area where the imaging surface layer is to be applied. In the areas not to be coated, each partial film web can be stopped independently of the other partial film webs, whereby no unnecessary film consumption arises.

In order to improve the coating process, it is provided to bring the film to a standstill in areas where there is no stripping, such that the press roll 3 passes empty under the film web 5. This can take place, for example, when the so-called cylinder channel passes through or when a non-pressing region passes through when using a press segment. To stop the film, it is necessary to release the film from the surface of the blanket cylinder 4 or the press roller 5.

A corresponding device is in FIG. 2 shown. For this purpose, an arrangement of blowing devices is provided in the coating unit 2. In each case at the inlet of the film web 5, possibly in front of a deflection roller, and at the outlet of the film web 5, possibly after a further deflection roller, a Blasluftleiste 17 is provided. When stopping the film web 5 is first a blast of air at both. Blasluftleisten 17 introduced into the gap of the inlet or outlet of the film web 5 relative to the press roller 3. The compressed air surge causes a - possibly thin - air layer between the film web 5 and the surface of the press roll 3 forms. As a result, the film web 5 can slip or float on the press roller 5. Thus, the press roller 3 can continue to rotate without the risk of damaging the film web 5 while the film web 5 is stationary.

In the arrangement of the coating unit 2 it is shown that so-called dancer rollers 18 are provided. Dancer rolls 18 can be used in the region of the film supply roll 8 and / or the film collection roll 9. They allow, in addition to a web tension control, that the film web 5 can be continuously unwound from the film supply roll 8 while it is stationary at the coating location. Thus, the film material required for the further transport of the film web 5 can be fed back very quickly.

In a simplified form of the coating device according to FIG. 3 the film web 5 is pressed onto the printing cylinder 4 via an additional pressure roller 14, wherein the pressure point as the transfer nip 6 'is arranged downstream of the coating gap for the adhesive between a blanket cylinder 13 and the printing cylinder 4. The pressure roller 14 is switched on and off by means known per se with respect to the impression cylinder 4.

The representation after FIG. 3 also shows an integrated embodiment of a film applicator, wherein applicator 1 and coating unit 2 are arranged within a single printing unit. The applicator 1 is formed here by the existing printing unit, while the coating unit 2 is formed by the assignment of the pressure roller 14 to the impression cylinder 4 of the printing unit.

The thus formed pressure roller 14 can be lifted in a simple manner by means of their means for turning on and off during the time of a continuous cylinder channel or in the range of uncoated parts of the sheet from the printing cylinder 4. At the same time, the film web 5 as already described above for this case already be stopped. In this case, a ventilation of the film web 5 on the pressure roller 14 is not required.

Foil consumption is minimized especially when auxiliary functions on the printing machine, e.g. a washing function, must be performed. This can be the case with blanket washing or inking unit washing.

1. 1. Die Foliensammelrolle 9 und die Folienvorratsrolle 8 werden über den jeweiligen Rollenantrieb 7 mittels einer Lageregelung in Stillstand gebracht. Es erfolgt keine Folienaufrollung oder-abrollung.
2. 2. Die Tänzerwalzen 18 werden festgesetzt, d.h. es erfolgt keine Bahnspannungsregelung.
3. 3. Die Folienvorratsrolle 8 oder die Foliensammelrolle 9 wird über die Lageregelung freigeschaltet, um einen bestimmten Bereich der Folienbahn z.B. von 10 mm freizugeben. Der entsprechende Rollenantrieb 7 wird wieder festgesetzt.
   Damit wird die Folienbahn um die Presswalze 3 bzw. den Drucktuchzylinder herum frei und kann auf dessen Oberfläche schweben.
4. 4. Zeitgleich wird Luft über die beiden Blasstangen am Folienein- und -auslauf zum Drucktuchzylinder bzw. zur Presswalze eingeblasen und die Bahn wird zum Schweben gebracht.

To do this, proceed as follows:

1. 1. The film collecting roller 9 and the film supply roll 8 are brought to rest via the respective roller drive 7 by means of a position control. There is no Folienaufrollung or unwinding.
2. 2. The dancer rollers 18 are fixed, ie there is no web tension control.
3. 3. The film supply roll 8 or the film collecting roller 9 is released via the position control to release a certain area of the film web, for example, of 10 mm. The corresponding roller drive 7 is set again.
   Thus, the film web around the press roller 3 and the blanket cylinder around freely and can float on the surface.
4. 4. At the same time, air is blown in via the two blower rods at the film inlet and outlet to the blanket cylinder or to the press roller and the web is levitated.

This type of shutdown of the film transport is used in particular for auxiliary functions of the printing press. Ink washing, rubber cylinder washing, printing cylinder washing or paper transport work are possible here.

On the basis of the present embodiments, it is possible to transfer different types of coatings in the transfer process from a transfer film 5 to different substrate materials. The detailed embodiments of the invention are not limited to the possibilities given here, but may be interpreted beyond the skill of the art.

LIST OF REFERENCE NUMBERS

1

commissioned

2

coating plant

3

press roll

4

Impression cylinder

5

Transfer foil / foil web

6

transfer nip

7

roller drive

8th

Film supply roll

9

Foil composite role

10

Press covering

11

cylinder gap

12

plate cylinder

13

Blanket cylinder

14

pressure roller

15

UV dryer

16

monitoring system

17

Blasluftleiste

18

dancer roll

6 '

transfer nip

Claims (10)

1. A device for transferring imaging layers from a carrier film onto printed sheet comprising at least one applicator (1) for a pictorial coating of a printed sheet with an adhesive and comprising a coating unit (2) for transferring the imaging layers from the carrier film onto the printed sheet, wherein the coating unit (2) contains an impression cylinder (4) and a press roll (3), which form a common transfer gap (6), and wherein the carrier film can furthermore be guided around the press roll (3) in such a way that it is placed with the coated side onto the printed sheet, which is guided on the impression cylinder (4) and is guided under pressure together with the printed sheet through the transfer gap (6) between press roll (3) and impression cylinder (4), and wherein the imaging layers adhere to the printed sheet after the printed sheet has left the transfer gap (6) in the area of the pictorial areas, which are provided with adhesive, and are lifted off the carrier film,
   characterized in
   that the press roll (3) is provided with a smooth cover (10) and has a device for reducing or eliminating the adhesion of the surface of the cover as compared to the carrier film (5).
2. The device according to claim 1,
   characterized in
   that pneumatic means for generating an air layer between carrier film (5) and surface of the press roll (3) are assigned to the transfer gap (6).
3. The device according to claim 1 and 2,
   characterized in
   that the film feed can be controlled by means of a film guiding device in such a way that the carrier film (3) is stopped when a transfer of an imaging layer onto a printed sheet does not occur in the transfer gap (6) of the coating tool (2), and that the pneumatic means apply blowing air to the transfer gap between carrier film (5) and surface of the press roll (3).
4. The device according to claim 3,
   characterized in
   that a control in connection with the rotary drive (7) of the carrier film (5) is provided in such a way that the film feed is stopped when passing through a cylinder channel (11), which receives grippers of the sheet-guiding impression cylinder (4), wherein the press roll (3) runs through in a sliding manner by further touching the carrier film (5).
5. The device according to claim 3,
   characterized in
   that provision is made for an increased pressing surface (13), which has a contoured outline as surface of the press roll (3), wherein the pressing surface (13) is limited to the area, which is to be coated maximally.
6. The device according to claims 1 to 5,
   characterized in
   that the carrier film (5) is divided into one or a plurality of partial film webs comprising a small width and that the partial film webs are fed to the transfer gap (6) next to one another.
7. A method for saving film in a device for transferring imaging layers from a carrier film onto printed sheet comprising at least one applicator (1) for a pictorial or flat coating of a printed sheet with an adhesive and comprising a coating unit (2) for transferring the imaging layers from the carrier film onto the printed sheet, wherein the coating unit (2) contains an impression cylinder (4) and a press roll (3), which form a common transfer gap (6), and wherein the carrier film can furthermore be guided around the press roll (3) in such a way that it is placed with the coated side onto the printed sheet, which is guided on the impression cylinder (4) and is guided under pressure together with the printed sheet through the transfer gap (6) between press roll (3) and impression cylinder (4), and wherein the imaging layers are lifted off the carrier film after the printed sheet has left the transfer gap (6) in the area of the area, which are provided with adhesive, so as to adhere to the printed sheet,
   characterized in
   that an air layer is introduced between the surface of the press roll (3), which guides the film web (5), and the carrier film (5) by reducing the web tension of the carrier film (5), and that the transport of the carrier film (5) is stopped in response to simultaneously rotating press roll (3).
8. The method according to claim 7,
   characterized in
   that the transport of the carrier film (5) is stopped while carrying out auxiliary functions on the printing press.
9. The method according to claim 8,
   characterized in
   that the transport of the carrier film (5) is stopped while washing processes are carried out for an inking system or blanket cylinder or an impression cylinder of the printing press.
10. The method according to claim 8,
    characterized in
    that the transport of the carrier film (5) is stopped while setup processes are carried out for the paper transport on the printing press.

Images