EP2288505B1 - Method and apparatus for application of cold foil material onto a sheet material in a processing machine - Google Patents

Abstract

The invention relates to a method and to an apparatus for application of cold foil material onto a sheet material in a processing machine.  The problem of the invention is to improve a method and an apparatus of this kind so that the quality of the foil coating onto a sheet material is improved.  This problem is solved by proceeding from an application tool to produce the required image, such that the sheet material (6) is coated with an adhesive (12), a cold foil material (7) is conveyed through a press gap (10) formed by a counter-pressure cylinder (2) guiding the sheet material (6) in the conveyance direction (3) and an additional cylinder (1), and in the press gap (10) the foil layer (7.3; 7.4) is pressed by a force onto sheet material (6) coated with adhesive (12) and that subsequent to the press gap (10), the cold foil material (7; 7.1 to 7.4) and the sheet material (6) being guided along the counter-pressure cylinder (2) and coated with adhesive (12) for the image to be produced, is transported at an angle of wrap a coincident to the counter-pressure cylinder (2) in the conveyance direction (3), that at the angle of wrap a at least the adhesive (12) is exposed to radiation or to drying and that in the conveyance direction (3) in an outlet gap (11) after the angle of wrap a, the cold foil material ( 7; 7.1 to 7.4) is separated into the foil substrate (7.1), the separating layer (7.2) and a non-imaging foil layer (7.3) of the foil layer and removed, and the sheet material (6) with adhesive (12) and an image-forming foil layer (7.4) of the foil layer is further carried along on the counter-pressure cylinder (2).

Description

The invention relates to a method and a device for applying cold foil material to a sheet material in a processing machine according to the preambles of the independent claims. Such a method and apparatus are known from the document DE 10 2007 034 302 A1 known.

For the production of metallic layers on printed sheets (sheet material) by means of a cold foil transfer process, several methods and devices are known, for example EP 0 569 520 B1 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 cold foil material comprises a foil substrate, a release layer fixed on the foil substrate, and a foil layer associated with the release layer and associated with the sheet material. The film layer may preferably be formed of metallic layers, for example of aluminum. Between the metallic film layer and the film substrate, the release layer is provided, which ensures that the film layer, in particular in the region of the imaging adhesive pattern, is removable from the film substrate. When transporting sheet material through the printing unit, each sheet material is provided with an adhesive pattern. Thereafter, the sheet material is passed through the coating unit, wherein by means of the transfer cylinder, the resting on the impression cylinder sheet material is brought into contact with the metallic foil layer. In this case, the downwardly lying (in the direction of the sheet material facing) lying metallic foil layer enters into a close connection with the areas provided with adhesive on the sheet material. After the further transport of the sheet material, the metallic foil layer adheres to the sheet material only in the area of the pattern provided with adhesive. The film substrate as well as the release layer and the non-imaging regions of the metallic foil layer are rewound as remaining cold foil material onto a roll. The imaging areas (imaging subject) of the metallic film layer are adhesively bonded in the region of the adhesive pattern with the sheet material. The sheet material is laid out in the coated state.

The post-published WO 2008/084191 A1 discloses a transparent coating process comprising the steps of applying a curable lacquer layer to a substrate, pressing a 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 lacquer layer has hardened is. 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 includes 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 (guide roller 36a) 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 (guide roller 36a).

The object of the invention is to improve a method and a device of the type mentioned in such a way that the quality of the film coating is improved on a sheet material.

The object is solved by the training features of claim 1 and 2. Further developments emerge from the dependent claims.

A first advantage is due to the fact that first the sheet material is coated imagewise with an adhesive on the respective side (top or bottom), which is to receive the cold foil material. The term adhesive is to be understood as meaning adhesive adhesives which act on the boundary surfaces on the basis of adhesion forces and cure or dry under the action of radiation or drying. It is also possible to use printing inks or varnishes, including colorless or colored varnishes, as the adhesive.

In the following, the top of the sheet material carries the imagewise adhesive. Thereafter, the sheet material is supplied with the imagewise arranged on the top adhesive in the conveying direction of a press nip. In this press nip, a cold foil material is also supplied and in this press nip is applied to the cold foil material and adhesive Top of the sheet material generates a surface-related force. The surface-related force, ie the contact pressure, is applied exclusively to the cold foil material and the sheet material (with adhesive) in this press nip. Due to the surface-related force and the image-wise arranged adhesive, the cold foil material and the sheet material enter into a cohesive connection (adhesion forces) in the press nip. In this case, the adhesive in the press nip is not yet cured or dried continuously, however, in one procedure, the curing or drying process may already be initiated.

Subsequently, after passing through the press nip, the sheet material with adhesive as well as the bonded cold foil material are conveyed congruently in a wrap angle α on the impression cylinder leading the sheet material in the conveying direction.
While the sheet material with adhesive and the associated cold foil material passes the wrap angle α in the conveying direction, no additional force is applied to the sheet material guided on the impression cylinder since the required connection has already been produced by means of a surface-related force in the upstream press nip. Subsequent to the already mentioned press nip, in which the cold foil material was applied to the sheet material, thus the sheet material (with adhesive and cold foil material) is guided only on the impression cylinder lying in the conveying direction. Here, the sheet material (with adhesive, cold foil material) is guided with the leading edge of sheet holding means of the impression cylinder fixed in the conveying direction. The cold foil material already applied to the sheet material in the press nip is thus transported synchronously (congruent) with the sheet material in the conveying direction on the impression cylinder.

In addition, in the conveying direction after passing through the press nip the sheet material (with adhesive and the associated cold foil material) in the wrap angle α or during the passage of the wrap angle α a preferably exposed to radiation or drying. Preferably, the action of the radiation or drying takes place immediately after leaving the press nip. At least the imagewise arranged on the sheet material adhesive is exposed to radiation or drying, so that the curing / drying process at least begins, ie, the curing or drying process is stimulated.

• In einem dem Umschlingungswinkel α nachfolgenden Auslaufspalt wird vom Bogenmaterial eine nicht bildgebende Folienschicht einer bevorzugt metallischen Folienschicht sowie die Trennschicht und das Foliensubstrat als verbleibendes, nicht benötigtes Kaltfolienmaterial getrennt und abgeführt. Das Foliensubstrat ist haftfest mit der Trennschicht und der nicht bildgebenden Folienschicht verbunden. Eine bildgebende Folienschicht des bevorzugt metallischen Kaltfolienmaterials wird in Folge des auf dem Bogenmaterial bildmäßig angeordneten, den Härte- oder Trocknungsprozess zumindest beginnenden Klebstoffes aus der Folienschicht des Kaltfolienmaterials heraus getrennt und verbleibt in Folge der Adhäsionskräfte des Klebstoffs auf dem auf dem Gegendruckzylinder weiter in Förderrichtung geführten Bogenmaterial.

Advantageously, preferably immediately, after passing through the wrap angle α, the sheet material (with adhesive and cold foil material) is further transported in the conveying direction as follows:

• In an outlet gap following the looping angle α, a non-forming film layer of a preferably metallic film layer as well as the separating layer and the film substrate as remaining, unneeded cold foil material are separated and removed from the sheet material. The film substrate is adhesively bonded to the release layer and the non-imaging film layer. An imaging film layer of the preferably metallic cold foil material is separated from the foil layer of the cold foil material as a result of the image material arranged on the image, the hardening or drying process at least incipient adhesive and remains due to the adhesive forces of the adhesive on the on the impression cylinder further in the conveying direction sheet material ,

• erstens in den auf dem Bogenmaterial mit dem Klebstoff verbleibenden, bildgebenden Folienmaterialteil des Kaltfolienmaterials und
• zweitens den nicht benötigten Folienmaterialteil (Foliensubstrat, Trennschicht, nicht bildgebende Folienschicht) des Kaltfolienmaterials

erfolgt.Since the sheet material (with adhesive and cold foil material) in the region of the wrap angle α no more pressure, means, such as pressure rollers, guide or guide rollers, for pressing the cold foil material to the guided on the impression cylinder sheet material is not required. The outlet gap connects in the conveying direction to the region of the wrap angle α, so that in this the separation of the cold foil material

• first, in the on the sheet material with the adhesive remaining, imaging film material part of the cold foil material and
• second, the unnecessary film material part (film substrate, release layer, non-imaging film layer) of the cold foil material

he follows.

In the conveying direction after this outlet gap, the deflecting means for the removal of the unnecessary film material portion (film substrate, release layer, non-imaging film layer of the cold foil material) are preferably arranged fixed to the frame. This deflecting serve only the web guide of the ablated cold foil material and are to the sheet material leading impression cylinder out of contact.

As a second advantage can be stated that in this procedure during the curing / drying process (in the region of the wrap angle α) the sheet material and the associated cold foil material are congruent, synchronously performed on the sheet-carrying impression cylinder and that after the press nip no additional, generated by contact pressure Pressing forces on the sheet material (with adhesive and cold foil material) act. In this way, for example, possible shifts between sheet material and cold foil material (with not yet completed curing / drying process), wrinkling or wrinkling, microcracks in the imaging cold foil material, etc. avoided. Thus, a contribution is made to the improved quality of the film coating on the sheet material.
Furthermore, the separation of the imaging film layer from the preferably metallic film layer is improved. As a result, the imaging film layer has an increased edge definition, a higher degree of gloss or improved matt effects on the sheet material, so that the quality of the film coating can be appreciably increased here as well.

A third advantage is that - in addition to the described steps of the working method - already after the application of the adhesive to the sheet material and before passing through the press nip in which the cold foil material is applied to the sheet material, the adhesive radiation or a is exposed to other drying, so that this adhesive begins to dry or harden before passing through the press nip or at least is excited. It should be noted that when passing through the press nip the adhesive present on the sheet material still has sufficient adhesion force for the connection (in the press nip) with the cold foil material or the imaging film layer.

Alternatively or additionally, after passing through the outlet gap, the sheet material guided on the impression cylinder with imaging adhesive and the remaining, imaging film layer can again be exposed to radiation, in particular UV radiation, or drying. For this purpose, a radiation / drying source at a distance to one of the sheet material (with adhesive and cold foil material) leading impression cylinder and / or be arranged in the boom.

A fourth advantage results from the fact that the application of cold foil material to a sheet material in a separate film transfer plant can be realized. In a preferred embodiment, the film transfer unit may be formed from a module which comprises at least one impression cylinder leading the sheet material and the further cylinder carrying a cold foil material and a radiation / drying source. The film transfer unit can be advantageously arranged integrated into a processing machine with at least one, preferably a plurality of printing and / or coating units.

In a preferred embodiment, at least one or preferably several printing and / or coating units can be upstream or downstream of the film transfer unit in the conveying direction of the sheet material.
In a preferred embodiment, the film transfer unit can be formed from components of a printing or coating unit. For example, the film transfer unit from a well-known in printing press construction printing or coating unit in series construction, known as a three-cylinder system in printing units formed be. Preferably, the counter-pressure cylinder is provided with respect to the other, single-sized cylinder (single-speed cylinder) double or multiple size _^(1/2 - single throw or _^1/3 - double throw etc.) are formed. In this case, a "seven-clock position" of counter-pressure cylinder and the other cylinder in the film transfer plant can be realized analogous to printing / coating units.

The image-wise coating of the sheet material with an adhesive can take place in a printing or coating unit upstream of the film transfer unit in the conveying direction of the sheet material. Alternatively, an application plant for the adhesive application can be arranged as an auxiliary device to a printing / coating unit.

The film transfer unit can be placed in a processing machine anywhere on the machine. In this way, in the case of a printing press having a plurality of printing units, it is possible that imaging cold foil coatings or metallization layers can be applied both before, after and also between the application of printing ink layers or paint layers or after their application. The cold foil material used may preferably be decorative foil or functional foil, in particular metallic cold foil material.

As the fifth advantage, it can be stated that a processing machine is not limited to a single film transfer factory. Rather, several, the described film transfer plants can be arranged within a sheet material processing machine, so that the application of different imaging film layers within a subject can be successively carried out on a sheet material. In this case, it is possible to provide a previously applied first adhesive pattern in a first film transfer unit with a first imaging film layer and, in the following, superimpose another, the first enclosing or complementary adhesive pattern and to provide it with a second imaging film layer.

The sheet material can be formed from any type of printing material, in particular paper, cardboard, corrugated cardboard, (plastic) film. The usable cold foil material may be arranged zonal or over the format width of the sheet material. Likewise, a plurality of sub-rollers may extend zonally or over the format width of the sheet material.
In addition, if necessary, the film transfer unit can be followed by a further processing unit, eg for embossing, cutting or punching, or a coating unit for surface finishing (for example for gloss / matt effects) of the sheet material or at least one printing unit for color printing or an imprinting unit.

Fig. 1

ein Folientransferwerk in erster Ausbildung,

Fig. 2

eine Weiterbildung des Folientransferwerks (gem. Fig. 1),

Fig. 3

eine Verarbeitungsmaschine in Reihenbauweise mit einem Folientransferwerk und vorgeordneten Lackwerk,

Fig. 4

eine Verarbeitungsmaschine in Reihenbauweise mit einem Folientransferwerk und vorgeordneten Druckwerk,

Fig. 5

eine Verarbeitungsmaschine in Reihenbauweise mit einem Folientransferwerk und einem integrierten Bogenausleger,

Fig. 6

eine Verarbeitungsmaschine in Reihenbauweise mit einem Folientransferwerk, einem Prägewerk und nachgeordneten Bogenausleger.

The invention will be explained in more detail below using an exemplary embodiment. Here are shown schematically:

Fig. 1

a film transfer factory in the first training,

Fig. 2

a development of the film transfer plant (acc. Fig. 1 )

Fig. 3

a processing machine in a row construction with a film transfer plant and upstream coating unit,

Fig. 4

a processing machine in a row construction with a film transfer plant and upstream printing unit,

Fig. 5

a processing machine in a row construction with a foil transfer plant and an integrated sheet delivery,

Fig. 6

a processing machine in a row construction with a film transfer plant, a stamping plant and downstream sheet delivery.

A processing machine for the application of cold foil material to a sheet material comprises in the conveying direction 3 of the sheet material 6 viewed 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 includes a counter-pressure cylinder 2, a cylinder 1 - here formed as a blanket cylinder - a plate / forme cylinder 19, an inking unit 20 and, if necessary, a dampening unit 21. The respective impression cylinder 2 can after the pressure gap, formed from blanket cylinder. 1 and counter-pressure cylinder 2, a second radiation / drying source 9 to be assigned. The further printing units C are of substantially identical construction and may also have such radiation / drying sources 9. A coating unit A comprises at least one sheet-metal printing cylinder 2 leading the sheet material 6, a cylinder 1 operatively connected to the counter-pressure cylinder 2, here designed as a forme cylinder or blanket cylinder. The cylinder 1 of each coating unit A is in operative connection with a metering device 17. The respective counter-pressure cylinder 2 can be assigned a second radiation / drying source 9 after the lacquer gap formed by cylinder 1 and impression cylinder 2. The second radiation / drying sources 9 arranged in the printing units C and coating units A can be designed as UV dryers.

Between the printing units C and between a printing unit C and a coating unit A transfer cylinder 18 are arranged. The impression cylinder 2 and the transfer cylinder 18 are formed as a sheet guiding cylinder with holding means 5 for fixing a sheet edge. The holding means 5 may be formed as a conventional, over the lateral surface (s) of the impression cylinder 2 protruding gripper. Alternatively, the holding means 5 may be formed as grippers, which are arranged within the lateral surface (s) of the impression cylinder 2, including an elevator on the lateral surface.

Impression cylinder 2, transfer cylinder 18 and at least the blanket cylinder 1 are coupled to a main drive formed of a continuous gear train and at least one drive torque in the gear train feeding drive motor.

All plate / form cylinder 19 may be integrated in a first training in the main drive with gear train. In a second embodiment, all plate / forme cylinder 19 are 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 the printing operation or for setting.

A film transfer unit B for transporting sheet material 6 in the conveying direction 3, a sheet-guiding impression cylinder 2. The impression cylinder 2 can transport one sheet material 6 one or more holding means 5, for example, each arranged in a cylinder channel 4 gripper systems, with circumferentially associated pressure surfaces and a corresponding have up to several times the size. In the present example, the counter-pressure cylinder 2 with two diametrically arranged channels 4 cylinder is double in size _^(1/2 - touriger cylinder) formed.

When dividing the counter-pressure cylinder 2 in the squares I to IV is preferably in the first quadrant I, alternatively in the second quadrant II, another cylinder 1 to the impression cylinder 2 arranged in contact brought. This cylinder 1 may be a forme cylinder of a coating unit or a flexographic printing unit or a blanket cylinder of a printing unit. Preferably, the cylinder 1 comprises at least one cylinder channel 4 and is of simple size (one-cylinder). Alternatively, the cylinder 1 may be double-sized and thus have two cylinder channels 4. The impression cylinder 2 and the cylinder 1 form a press nip 10th

For realizing a sufficient pressure, only the impression cylinder 2 and cylinder 1 forming the press nip 10 comprise means for generating The surface-related force (contact pressure) acting on the sheet material (with adhesive and cold foil material (7; 7.1, 7.2, 7.3, 7.4).) For this purpose, in the press nip 10, the cylinder 1 with a variable axis position, for example by means of an adjustable eccentric bearing, in a storage or In a further embodiment, the cylinder 1 may comprise means as a support (n) on its lateral surface Alternatively, the cylinder 1 may be mounted with an unchangeable axial position in the frame and formed with means as a support on the lateral surface The cylinder 1 can be registerable (circumferential / lateral / oblique register) The counter-pressure cylinder 2 can also carry a lift (with or without underlay), for example a rubber blanket In addition to realizing the sufficient pressure, measures can be taken for the correct handling become.

The film transfer unit B may be a coating unit which comprises a forme cylinder, here as a cylinder 1, and a metering device 17. For the function of the cold foil transfer, the metering device 17 is at least separated from the associated forme cylinder (cylinder 1). After completion of the cold foil transfer and removal of the cold foil material 7 from the press nip 10, the metering device 17 can be brought into functional connection with the forme cylinder 1 and the film transfer unit B can be used again as a coating unit. The Figures 2 and 5 show possible machine configurations.
Alternatively, the film transfer unit B may be a printing unit which comprises a blanket cylinder, here designed as a cylinder 1, and a plate / forme cylinder 19 and at least one inking unit 20. For the function of the cold foil transfer of the plate / forme cylinder 19 is at least separated from the associated blanket cylinder 1. After completion of the cold foil transfer and removal of the cold foil material 7 from the press nip 10, the plate / forme cylinder 19 can be brought into operation with inking unit 19 with the blanket cylinder 1 and the film transfer unit B can be used as a printing unit. FIG. 3 shows a possible machine configuration. In these embodiments, the press nip 10 represents the painting or printing gap.

Through the press nip 10, a cold foil material 7 (7.1 - 7. 4) is guided. Preferably, the cold foil material 7 is received on a film supply roll 13 and is transported therefrom in the conveying direction, i. in the direction of press nip 10, unwound. The film supply roll 13 may preferably be rotatably mounted in the film transfer unit B. Alternatively, depending on the machine configuration, the film supply roll 13 may also be rotatably mounted in a printing unit C adjacent to the film transfer unit B or an adjacent coating unit A. Preferably, after passing through the press nip 10 and a wrap angle α to be described later, the remaining, i.e., the length of the wrap angle .alpha. not transferred to a sheet material 6 cold foil material 7, especially 7.1 - 7.3, are wound on a film collecting roll 14. The film collecting roller 14 may preferably be rotatably mounted in the film transfer unit B. Alternatively, the film collecting roll 14 can also be rotatably mounted in a printing unit C adjacent to the film transfer unit B or an adjacent coating unit A. For the purpose of guiding the cold foil material 7, the foil transfer unit B comprises a plurality of per se known guide means 16, preferably guide rollers 16, alternatively at least one guide roller 16 or other guide elements for the cold foil material 7.

The cold foil material 7 is at least formed from a foil substrate 7.1, a separating layer 7.2 fixedly arranged on the foil substrate 7.1 and a foil layer 7.3 connected to the separating layer 7.2 and facing the sheet material 6; 7.4. Latter film layer 7.3 .; 7.4 is formed by parts that are not imaging and are named here as non-imaging film layer 7.3 and parts that are imaging and are named here as the imaging film layer 7.4.
The aforementioned cold foil material 7; 7.1-7.4 is thus multi-layered, relatively thin. As a film substrate 7.1, it has a carrier layer, which is preferably thin and tear-resistant. The separating layer 7. 2 is used to facilitate lifting the imaging film layer 7. 4 from the film substrate 7.1. The film layer 7.3; 7.4 can eg a metallized layer or a gloss layer or a texture layer or a colored layer or a pattern-containing layer.
The cold foil material 7; 7.1 - 7.4 is processed according to the principle of cold foil transfer. For this purpose, an imaging pattern of an adhesive substance 12 (adhesive, paint, varnish) is applied to a sheet material 6. This can be done in an applicator, preferably a printing unit C, for example in the offset printing process, or preferably a coating unit A respectively in the conveying direction 3 before the press nip 10. In a printing unit C with a plate / forme cylinder 19 and a cylinder 1 designed as a blanket cylinder, the adhesive 12 is supplied to the plate / forme cylinder 19 and transferred imagewise by means of the cylinder 1 to the sheet material 6. In the case of a coating unit A, the adhesive 12 is supplied to the cylinder 1 designed as a forme cylinder and imagewise transferred to the sheet material 6 by means of this cylinder 1. In this case, the adhesive 12 may include means for measuring the density, for example a coloring substance.

The film transfer station B further comprises a first radiation source or drying source 8, which is arranged in the conveying direction 3 after the press nip 10 at a defined distance from the impression cylinder 2. Preferably, the radiation / drying source 8 is a UV radiation / drying source and is in the first and / or second squares I, II associated with the impression cylinder 2 adjacent.

In addition, in the conveying direction 3 in front of the press nip 10, a second radiation source or drying source 9 may additionally be arranged at a defined distance from the impression cylinder 2. Fig. 1 shows a radiation / drying source 9, which is arranged in the inlet gap in front of the pressure cylinder 10 formed from cylinder 1 and counter-pressure cylinder 2 and is directed onto the sheet material 6 provided with adhesive 12. If required, a radiation / drying source 9 arranged in front of the press nip 10 may comprise means for exciting the crosslinking (polymerization) of the adhesive 12 and / or means for introducing a heat input to the adhesive 12 or to the sheet material 6.

In a further embodiment, at least one further second radiation / drying source 9 may be arranged at a defined distance from the impression cylinder 2. This radiation / drying source 9 is downstream of the outlet gap 11 in the conveying direction 3 and, depending on the transfer to a downstream holding means 5 for sheet material 6 II. And / or III. Be assigned to quadrant of the impression cylinder 2. If necessary, the radiation / drying source 9 arranged downstream of the outlet gap 11 may comprise means for the final curing of the adhesive 12.

In the first and / or second squares I, II of the impression cylinder 2 an already mentioned wrap angle α is provided in which the sheet material 6 and the cold foil material 7 (7.1 - 7.4) synchronously, congruent on the impression cylinder 2 are performed. The wrap angle α corresponds to a defined Bogenlängenmaß the lateral surface of the impression cylinder. 2
The wrap angle α may have the same central angle ß with respect to the axial center of the impression cylinder 2.
The radiation / drying source 8 arranged adjacently to the impression cylinder 2 can extend essentially over the wrap angle α. The radiation / drying source 8 is preferably arranged downstream of the press nip 10. In a further embodiment, the radiation / drying source 8 may be directed with its direction of action in the press nip 10. For this purpose, a Abschotteinrichtung can be provided between the radiation / drying source 8 and the cylinder 1.

In the conveying direction 3, an outlet gap 11 is provided after the wrap angle α. In this outlet gap 11, the remaining cold foil material 7.1 - 7.3, which is not required for an imaging coating, is separated from the imaging film layer 7.4. The imaging film layer 7. 4 is dissolved out of the cold foil material 7 when passing through the outlet gap 12 as a result of the adhesive force of the arranged on the sheet material 6 adhesive 12 and remains on the sheet material 6. At least one deflection means 15, for example a deflection roller 15 or at least one deflection roller or other deflection contour, for example a sliding guide, is arranged for the remaining cold foil material 7.1 - 7.3, which guides the path of the cold foil material 7.1 - 7.3 in the direction of the film collection roller 14 leads. Alternatively, a plurality of deflection rollers 15 or another deflecting element may be formed.
As in FIG. 1 and 2 recognizable, arranged in the conveying direction 3 after the outlet gap 11, the impression cylinder 2 adjacent deflecting means 15 for discharging the film substrate 7.1 with release layer 7.2 and non-imaging film layer 7.3 is provided. This deflection means 15 is out of contact with the sheet material 6 (with imaging film layer 7.4) leading impression cylinder 2, so that no contact pressure acts on the sheet material 6.

In FIG. 1 is shown in the first embodiment that the cold foil material 7 is guided around the cylinder 1 in the press nip 10. Alternatively shows FIG. 2 an arranged in the conveying direction 3 in front of the cylinder 1 deflecting roller 15 or pulley or other deflecting elements. By means of this deflection roller 15, the path of the cold foil material 7 can be guided approximately tangentially into the press nip 10.

The guide rollers 15 may be arranged adjustable at least in approximately vertical direction.
The Folientransferinrerk B may have further means for the web guide of the cold foil material 7, which will not be discussed here in detail.

The processing machine may comprise a plurality of printing units C. In this machine configuration, at least one film transfer unit B can be arranged before or after or between these printing units C.
Alternatively, the processing machine may comprise a plurality of printing units C and at least one coating unit A. In this machine configuration, at least one film transfer unit B can be arranged before or after or between these printing units C and / or coating units A.

A processing machine is not limited to the embodiment with a film transfer unit B. Rather, several film transfer units B can be arranged within a processing machine.
In the processing machine, each film transfer unit B in the conveying direction 3 is preceded by an applicator for the image-wise coating of the sheet material 6 with an adhesive 12. Such an application unit may preferably be a printing unit C or a coating unit (flexographic printing unit) A. For the transport of the sheet material 6 by means of sheet guiding cylinders, here counter-pressure cylinder 2 and transfer cylinder 18, can also be arranged bowing cylinder in the form of at least one turning cylinder according to the principles of Eintrommelwendung and / or the three-drum turning within a processing machine.

In a first embodiment, the processing machine with a device, especially an applicator for imagewise coating of the sheet material 6 with an adhesive 12 and a downstream film transfer unit B for applying cold foil material 7; 7.1 - 7.4 be formed on a sheet material 6 and further at least one printing unit C. In this case, a respective printing unit C comprises an inking unit 20 and optionally a dampening unit 21, a plate / forme cylinder 19, a blanket cylinder 1 and a sheet material 6 leading impression cylinder 2. Each printing unit C comprises a second, directed onto the guided on the impression cylinder 2 sheet material 6 Radiation / drying source 9, which is the pressure gap formed of cylinder 1 and impression cylinder 2, downstream. The second radiation / drying source 9 may be a UV dryer. If required, said processing machine may comprise, in addition to the applicator, film transfer unit B and the at least one printing unit C, at least one coating unit A. In this case, a respective coating unit A comprises a metering device 17, a forme cylinder 1 and a counter-pressure cylinder 2. Each coating unit A comprises a second, directed onto the guided on the impression cylinder 2 sheet material 6 radiation / drying source 9, which the lacquer gap formed from cylinder 1 and impression cylinder 2, is subordinate. Again, the second radiation / drying source 9 may be a UV dryer.

In a further embodiment, the processing machine with a device, especially an applicator for imagewise coating of the sheet material 6 with an adhesive 12 and a downstream film transfer unit B for applying cold foil material 7; 7.1 - 7.4 be formed on a sheet material 6 and further at least one coating unit A. In this case, a respective coating unit A comprises a metering device 17, a forme cylinder 1 and a counter-pressure cylinder 2. Each coating unit A comprises a second, directed onto the guided on the impression cylinder 2 sheet material 6 radiation / drying source 9, which the lacquer gap formed from cylinder 1 and Impression cylinder 2, downstream. Again, the second radiation / drying source 9 may be a UV dryer.
In the processing of UV ink or UV varnish and the application to the sheet material 6 in each case at least one printing / varnish gap in the conveying direction in each case a UV dryer cure the UV ink or the UV varnish and thus dry.
When processing corresponding adhesive 12, the first radiation / drying source 8 and further second radiation / drying sources 9 can each be configured as UV dryers, so that the entire processing machine is designed as a UV printing machine (including coating unit) or exclusively as a UV coating machine can be.

In a preferred embodiment, the film transfer unit B comprises a lifting device (not shown) for the film supply roll 13 and the film collection roll 14. The lifting device can be arranged directly on the film transfer unit B and, for example, a column with a rotatably arranged portal arm and stop or gripping means for the Foil rolls 13, 14 have. Alternatively, an existing ceiling or hall crane can be used as a lifting device. In a further embodiment, a film transfer station B directly adjacent Printing unit C or a coating unit A include such a lifting device for the film supply roll 13 and the film collecting roll 14. For example, the lifting device may be arranged on a printing unit C or coating unit A and be formed there for lifting and lowering (or for changing) of rollers. Furthermore, this lifting device for raising and lowering (or for changing) of film rolls 13, 14 may be formed.

In Fig. 3 is shown as an applicator coater A, which consists of a cylinder 1, here formed as a forme cylinder 1, a metering device 17, formed from a applicator roll and a metering system, such as a chambered doctor blade, and a forme cylinder 1 associated, a sheet material 6 leading impression cylinder 2 , If required, a second radiation / drying source 9, for example a UV dryer, can be arranged in the conveying direction 3 after the point of contact of the forme cylinder 1 and impression cylinder 2. By means of the applicator unit designed as coating unit A, image-wise coatings of the adhesive 12 can be applied to the sheet material 6 guided on the impression cylinder 2 starting from the metering device 17 for an adhesive 12 via a printing plate fixed to the forme cylinder 1.

In Fig. 4 is shown as an application unit a printing unit C, which consists of a cylinder 1, here designed as a blanket cylinder 1, a plate / forme cylinder 19, an inking unit 20 and, if necessary, a dampening unit 21 is formed. The blanket cylinder 1 is associated with a sheet material 6 leading impression cylinder 2. 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 may be arranged. By means of the application unit designed as a printing unit C, starting from the inking unit 20, imagewise coatings of the adhesive 12 can be applied to the sheet material 6 guided on the impression cylinder 2 via a printing plate fixed to the plate / forme cylinder 19 and the blanket cylinder 1. Alternatively, between the plate / forme cylinder 19 and the blanket cylinder 1 is a separation and the adhesive 12 is transferred from a to the blanket cylinder 1 on / off adjustable (additional) metering device fixed to a blanket cylinder 1 printing plate and applied from there to the sheet material 6.

In Fig. 5 a film transfer unit B is shown in the conveying direction 3, a printing unit C with the same function for the adhesive coating - as in the training according to Fig. 4 shown - upstream. Alternatively, the film transfer unit B instead of the printing unit C, a coating unit A with the same function for the adhesive coating - as in the training according to Fig. 3 shown - be upstream. This sheet transfer work B comprises a directly downstream, preferably integrated sheet delivery D. This sheet delivery D comprises an endlessly circulating conveyor 22, which has means for holding the respective sheet material 6 for conveying the sheet material 6 in the direction of a delivery stack 23 and storage on this. The conveyor 22 is arranged downstream of the impression cylinder 2 of the film transfer unit B in the conveying direction 3. If necessary, the sheet delivery D can have a further, second radiation / drying source 9.

In Fig. 6 an already described film transfer plant B is shown, in the conveying direction 3, a stamping E can be arranged directly or indirectly downstream. The embossing unit E comprises a cylinder 1 which carries a stamping mold 24. The cylinder 1, for example a forme cylinder, is in operative connection with an impression cylinder 2 designed as a sheet guiding cylinder. The counter-pressure cylinder 2 may have an undercut 25 of the cylinder jacket surface. A rubber blanket or an elevator, for example an incompressible elevator, can be detachably arranged on this cylinder jacket surface. Alternatively, an embossing mold can be detachably arranged on the cylinder jacket surface of the impression cylinder 2, in which case the cylinder 1 carries a blanket or an elevator. The embossing unit E can have a radiation / drying source 9 in the conveying direction 3 before and / or after the contact gap of cylinder 1 and impression cylinder 2.

The embossing E follows in the conveying direction 3, a transfer cylinder 18 and this downstream of a counter-pressure cylinder 2 or a transfer cylinder 18, which is followed by the sheet delivery. The sheet delivery D in turn comprises an endlessly circulating conveyor 22, which has means for holding the respective sheet material 6 for the purpose of conveying the sheet material 6 in the direction of a delivery stack 23 and storage on this. Preferably, the circumferential run are arranged substantially in a horizontal plane. If required, the impression cylinder 2 or transfer cylinder 18 arranged immediately before the sheet delivery D can have a further, second radiation / drying source 9, for example UV dryers. Likewise, the sheet delivery can have a second radiation / drying source 9, for example UV dryers.

Individual or all radiation / drying sources 8; 9 may be carried out in particular taking into account the nature of the adhesive 12 as preferred UV dryer, IR dryer or other dryer.
In a further embodiment, the respective radiation / drying source 8 and / or 9 may be formed such that they have a defined format or the entire format width on the sheet material 6 or zonal or partial, in particular in the areas of the adhesive 12, on the sheet material 6 is effective. For this purpose, the radiation / drying sources 8; 9 format-related, zonal / partially controllable and can thus preferably be activated taking into account the respective subjects of the adhesive 12 on the sheet material 6. In this case, the energy output of the respective radiation / drying source 8, 9 under the aspect of the nature of the cold foil material 7, the adhesive 12 and / or the type of printing material 6, especially sheet material 6, be regulated / controlled. In one embodiment, the respective radiation / drying source 8; 9 be coupled switching and signal technology with a control station or a machine control. In this case, for example, data relating to the format or the subject of the adhesive or the processing speed can be stored in the machine control / control station, which can be used to control the drying sources 8; 9 are usable. At least one of the radiation / drying sources is preferred 8th; 9 zonal or partial or format-based controllable. The drying sources to be used 8; 9 are matched to the type of adhesive 12 used. In this case, the drying sources 8; 9 may be of a conventional or reduced-heat type. Alternatively, the respective drying source 8; 9 be implemented in LED technology. Thus, an energy-saving, environmentally friendly operation of the radiation / drying sources 8; 9 be realized. Furthermore, a possible radiation / heat input into the cold foil material 7 can be limited to the size necessary for the cohesive connection of the imaging film layer 7. 4 and the image material 12 arranged on the sheet material 6. Preferably, the distance of the radiation / drying source 8, 9 to the sheet material 6 is adjustable, preferably automatically adjustable by means of a machine control and corresponding adjusting means or adjustable.

In summary, the device comprises an applicator for the imagewise coating of the sheet material 6 with an adhesive 12. Furthermore, a downstream film transfer unit B with a coated with adhesive 12 sheet material 6 with holding means 5 transporting impression cylinder 2 and a cylinder 1, which form a press nip 10. Through the press nip 10, the cold foil material 7, 7.1 to 7.4 and the sheet material (with adhesive 12) in the conveying direction 3 can be transported. In the press nip 10, the film layer is 7.3, 7.4 of the cold foil material 7; 7.1, 7.2, 7.3, 7.4 by means of a force on the imagewise adhesive with adhesive 12 sheet material 6 pressed.
The impression cylinder 2 and cylinder 1 forming the press nip 10 exclusively comprise means for producing a sheet material 6 and the cold foil material 7; 7.1, 7.2, 7.3, 7.4 acting, area-related force.
Preferably, by means of a pressing force achievable by the cylinder 1, the cold foil material 7; 7.1, 7.2, 7.3, 7.4, especially the film layer 7.3, 7.4 on the image-wise arranged adhesive 12 supporting sheet material 6 can be applied. Following the press nip 10, the cold foil material 7; 7.1 to 7.4 and guided on the impression cylinder 2 sheet material 6 in a wrap angle α congruent synchronously transported on the impression cylinder 2 in the conveying direction 3. Here, the sheet material 6 rests on the jacket of the impression cylinder 2 and carries the imagewise arranged adhesive 12. The cold foil material 7, 7.1 to 7. 4 is at least with the imagewise arranged adhesive 12 in contact.

• in das Foliensubstrat 7.1, die Trennschicht 7. 2 und eine nicht bildgebende Folienschicht 7. 3 der Folienschicht 7.3; 7.4 trennbar und abförderbar ist und
• das Bogenmaterial 6 mit bildmäßig angeordnetem Klebstoff 12 und einer bildgebenden Folienschicht 7. 4 der Folienschicht 7.3; 7.4 auf dem Gegendruckzylinder 2 weiter in Förderrichtung 3 transportierbar ist.

In the region of the wrap angle α, a first radiation / drying source 8 for the adhesive 12 is arranged adjacent to the impression cylinder 2 at a distance. In the conveying direction 3, an outlet gap 11 is arranged after the wrap angle α in which the cold foil material 7; 7.1 to 7.4

• in the film substrate 7.1, the release layer 7. 2 and a non-imaging film layer 7. 3 of the film layer 7.3; 7.4 is separable and recoverable and
• the sheet material 6 with imagewise arranged adhesive 12 and an imaging film layer 7. 4 of the film layer 7.3; 7.4 on the impression cylinder 2 is further transportable in the conveying direction 3.

In the conveying direction 3, a deflecting means 15 for discharging the excess film substrate 7.1 with separating layer 7. 2 and the non-forming film layer 7. 3 is arranged downstream of the outlet gap 11. The deflection 15 is out of contact with the sheet material 6 with imaging film layer 7.4 leading impression cylinder. 2

The cold foil material 7; 7.1 - 7.4 can be transported in the conveying direction 3 in relation to the format of the sheet material 6 through the press nip 10. Alternatively, the cold foil material 7; 7.1 - 7.4 be transported in the conveying direction 3 based on the subject through the press nip 10.
During the passage of the cylinder channel 4, the transport of the cold foil material 7; 7.1 - 7.4 be stoppable in the press nip 10. That is, during the passage of the cylinder channel 4, the transport (feed) of the cold foil material 7; 7.1 - 7.4 be temporarily interrupted.
Alternatively, during the passporting of the cylinder channel 4, the cold foil material 7; 7.1 - 7.4 in the press nip 10 in the direction of the film supply roll 13 transportable be. That is, the cold foil material 7; 7.1 - 7.4 is against its actual conveying direction temporarily "fed back" in the direction of the film supply roll 13. With these modes of operation, the material consumption of the cold foil material 7; 7.1 - 7.4 reduced cost.

• in das Foliensubstrat 7.1, die Trennschicht 7. 2 und eine nicht bildgebende Folienschicht 7. 3 der Folienschicht getrennt und das verbliebene Kaltfolienmaterial 7.1 - 7.3 wird abgeführt und
• das Bogenmaterial 6 mit dem bildmäßig angeordneten Klebstoff 12 und der darauf haftenden, bildgebenden Folienschicht 7. 4 der Folienschicht wird auf dem Gegendruckzylinder 2 weiter geführt.

The working method is as follows: For applying cold foil material 7 to a sheet material 6 in a processing machine, an image-wise coating of the sheet material 6 with an adhesive 12 is realized in the applicator unit (printing unit C or coating unit A). From the sheet material 6 with holding means 5 leading impression cylinder 2 and the adjacent, further cylinder 1, a press nip 10 is formed by the cold foil material 7, at least formed of a film substrate 7.1, a fixed on the film substrate 7.1 release layer 7.2 and one with the release layer 7.2 connected, the sheet material 6 associated film layer 7.3; 7.4, is guided. In the press nip 10, the film layer 7 is pressed by means of a force on the image-wise adhesive 12 sheet material 6.
Only in the press nip 10 is a surface-related force on the sheet material 6 and the cold foil material 7; 7.1, 7.2, 7.3, 7.4 generated and by means of the adhesive 12 is entered into a cohesive connection. The engagement of the cohesive connection is based on adhesion forces at the interfaces between adhesive 12 and sheet material 6 or adhesive 12 and the film layer 7.3, 7.4.
Following the press nip 10, the cold foil material 7; 7.1 to 7.4 and the guided on the impression cylinder 2, imagewise coated with adhesive sheet material 12 in a wrap α α congruent transported on the impression cylinder 2 in the conveying direction 3. At least the adhesive 12 is exposed to radiation or drying (first radiation / drying source 8) in the wrap angle α, so that the curing or drying process of the adhesive 12 on the sheet material 6 at least begins and a material connection between the sheet material 6 and the imagewise adhesive 12 and between this adhesive 12 and the with the Adhesive 12 (in the press nip 10) brought into contact part of the film layer 7.3, 7. 4 is received. Thereafter, in the conveying direction 3 after passing the wrap angle α in a discharge gap 11, the cold foil material 7; 7.1 to 7.4

• in the film substrate 7.1, the release layer 7. 2 and a non-imaging film layer 7. 3 of the film layer separated and the remaining cold foil material 7.1 - 7.3 is removed and
• the sheet material 6 with the imagewise arranged adhesive 12 and adhering thereto, the imaging film layer 7. 4 of the film layer is guided on the impression cylinder 2 on.

In a further embodiment, in the conveying direction 3 in front of the press nip 10, the supplied, imagewise coated with adhesive 12 sheet material 6 of a second radiation / drying source 9 are exposed. Thus, even before passing through the press nip 10, the curing or drying process of the adhesive 12 (on the sheet material 6) can be excited.

In a further embodiment, in the conveying direction 3 after the outlet gap 11, the sheet material 6 with adhesive 12 and imaging film layer 7.4 (the remaining cold foil material 7.1 - 7. 3 was already dissipated in the direction of film supply roll 14) a further second radiation / drying source 9 are exposed, to further harden or finally dry the adhesive 12.

In the present examples of carrying out the cold foil transfer, the film supply roll 13 is assigned to the respective film transfer unit B on the sheet feed side. The film supply roll 13 may have a rotary drive. The rotary drive is required for preferably continuous regulated web feed of the cold foil material 7 to the film transfer unit B and is therefore controllable. On the downstream side of the film transfer unit B, the used (remaining) cold foil material 7.1- 7.3 is wound on a film collecting roll 14. Again, a drive may be provided which is controllable.

Furthermore, tensioning rollers (not shown) may be provided in the region of the web guide of the cold foil material 7. By means of such tension rollers, the cold foil material can always be kept in the same voltage relative to the cylinder 1.

The surface of the cylinder 1 is preferably covered with a plastic coating comparable to a blanket or blanket. The plastic coating has a defined elasticity. The surface of the plastic coating may be relatively smooth or structured, for example by means of glass bead cloth, and has a low adhesion to the cold foil material 7. Alternatively, the plastic coating may be a high pressure plate or a recessed blanket. By means of the plastic surface, a clean, clear transfer of the imaging film layer 7.4 to the sheet material 6 is made possible. Furthermore, a comparatively broad press nip 10 is generated by the elastic structure of the plastic coating. Furthermore, a further enlargement of the press nip 10 can be generated by an example compared to the single-sized cylinder 1 double the diameter of the impression cylinder 2. All these measures make possible, on the one hand, a relatively wide surface in the press nip 10 and, on the other, a secure mobility between the surface of the cylinder 1 pressing against the cold foil material 7 and the sheet material 6 guided on the impression cylinder 2 (with adhesive 12). With these means, the transfer of very fine patterns of the imaging film layer 7.4 on the sheet material 6 is ensured.
Due to the hardening / drying of the adhesive 12 starting at least after passing through the press nip 10, the cohesive connection between the imaging film layer 7.4 and the adhesive 12 on the sheet material 6 is improved in addition to the force effect in the press nip 10 by an increased adhesion effect, so that in the subsequent run-off gap 11 a improved edge-sharp separation (leaching) of the imaging film layer 7.4 from the remaining, the film collection roll 14 can be fed cold foil material 7.1 - 7. 3 is achieved.

The cold foil material 7 (7.1-7.4) can be guided through the press nip 10 in the cycle mode. For this purpose, in the conveying direction of the cold foil material 7 before and / or after the press nip 10, means for temporary storage (cyclic operation) of this cold foil material 7 may be provided. This is an economical consumption of cold foil material 7 can be realized.

The arrangement of the film supply roll 13 and the film collection roll 14 is not limited to the described embodiments. Rather, such a film supply roll 13 may be arranged on preferably the film transfer unit B adjacent modules of the processing machine. Alternatively, such a film supply roll 13 may be assigned to be adjacent in a separate device of the processing machine or arranged in the pressroom, wherein the cold foil material 7 is fed from there to the film transfer unit B. The arrangement of the film collecting roll 14 can also take place at the film transfer plant B adjacent assemblies of the processing machine. In a further embodiment, the film collecting roll 14 can be omitted. After that, the cold foil material separated and discharged in the outlet gap 11, formed from film substrate 7.1, separating layer 7.2 and non-forming film layer 7.3, can be fed to a shredder device. In this case, guide means can support the supply / discharge of the cold foil material 7.

For the execution of set-up or cleaning processes, the application of adhesive 12 to the sheet material 6 can be temporarily interrupted. Likewise, at least the counter-pressure cylinder 2 of the film transfer unit B can be rotationally movable by a drive while the cold foil material 7; 7.1-7.4 is shut down, preferably when the cylinder 1 is turned off by the counter-pressure cylinder 2.

LIST OF REFERENCE NUMBERS

1

Cylinder (blanket / blanket cylinder)

2

Impression cylinder

3

conveying direction

4

cylinder gap

5

holding means

6

sheet material

7

Cold foil material

7.1

foil substrate

7.2

Interface

7. 3

non-imaging film layer

7. 4

imaging film layer

8th

first radiation / drying source

9

second radiation / drying source

10

Pressing gap (printing / varnishing gap)

11

outlet gap

12

adhesive

13

Film supply roll

14

Foil composite role

15

Deflection means (deflection roller / roller)

16

Guide means (guide roller / roller)

17

metering

18

transfer cylinder

19

Plate / Formzyl inder

20

inking

21

dampening

22

Conveyor

23

delivery pile

24

stamping die

25

undercut

A

Coating unit (flexographic printing unit)

B

Film transfer unit

C

printing unit

D

sheet delivery

e

stamping

I

first quadrant

II

second quadrant

III

third quadrant

IV

fourth quadrant

α

Wrap angle

ß

central angle

Claims (15)

1. A method for applying cold foil material (7; 7.1, 7.2, 7.3, 7.4) onto a sheet material (6) in a processing machine comprising an image-based coating of the sheet material (6) with an adhesive (12), following this, a nip (10) formed of an impression cylinder (2) guiding sheet material (6) in conveying direction (3) and a further cylinder (1) through which the cold foil material (7; 7.1, 7.2, 7.3, 7.4), at least formed of a foil substrate (7.1), a separating layer (7.2) fixed on the foil substrate (7.1) and a foil layer (7.3, 7.4) connected to the separating layer (7.2) and assigned to the sheet material (6) is conveyed, wherein in the nip (10) the foil layer (7.3, 7.4) by means of a force is pressed onto the image-based sheet material (6) on which adhesive (12) is adhering,
   characterized in that exclusively in the nip (10) an area-based force from the cylinder (1) with a variable axis position onto the sheet material (6) and the cold foil material (7; 7.1, 7.2, 7.3, 7.4) is generated and by means of the adhesive (12) a material-to-material connection is created, in that following the nip (10) the cold foil material (7; 7.1 to 7.4) and the sheet material (6) guided on the impression cylinder (2) and coated with adhesive (12) based on the image are congruently transported on the impression cylinder (2) in conveying direction (3) at an angle of wrap (α), in that in the angle of wrap (α) at least the adhesive (12) is exposed to a radiation or a drying and in that in conveying direction (3) after the angle of wrap (α) in a discharge gap (11) the cold foil material (7; 7.1 to 7.4)

   - the foil substrate (7.1), the separating layer (7.2) and a non imaging foil layer (7.3) of the foil layer is separated and discharged and

   - in that the sheet material (6) with adhesive (12) and an imaging foil layer (7.4) of the foil layer is further guided on the impression cylinder (2).
2. The device for applying cold foil material (7; 7.1, 7.2, 7.3, 7.4) onto a sheet material (6) in a processing machine, comprising an application couple for an image-based coating of the sheet material (6) with an adhesive (12) and a foil transfer couple (B) arranged downstream with an impression cylinder (2) guiding the sheet material (6) in conveying direction (3) and a further cylinder (1), which form a nip (10) through which the cold foil material (7; 7.1, 7.2, 7.3, 7.4), at least formed of a foil substrate (7.1), a separating layer (7.2) fixed on the foil substrate (7.1) and a foil layer (7.3, 7.4) connected to the separating layer (7.2) and assigned to the sheet material (6) can be conveyed, wherein in the nip (10) the foil layer (7.3, 7.4) can be pressed onto the sheet material to which adhesive (12) is adhering based on the image by means of a force, characterized in that exclusively the impression cylinder (2) and cylinder (1) forming the nip (10) comprise means for generating an area-based force acting on the sheet material (6) and the cold foil material (7; 7.1, 7.2, 7.3, 7.4) and the cylinder (1) is mounted within a frame with a variable access position, in that following the nip (10) the cold foil material (7; 7.1 to 7.4) and the sheet material (6) guided on the impression cylinder (2) with holding means (5) and coated with adhesive (12) based on the image can be congruently transported at an angle of wrap (α) on the impression cylinder (2) in conveying direction (3),
   in that in the region of the angle of wrap (α) a first radiation/drying source (8) is arranged adjacent to the impression cylinder (2) at a spacing and in that in conveying direction (3) after the angle of wrap (α) a discharge gap (11) is arranged in which the cold foil material (7; 7.1 to 7.4)

   - can be separated and conveyed away into the foil substrate (7.1), the separating layer (7.2) and a non-imaging foil layer (7.3) of the foil layer and

   - the sheet material (6) with adhesive (12) and an imaging foil layer (7.4) of the foil layer is further guided on the impression cylinder (2).
3. The device according to Claim 2, characterized in that the cylinder (1) comprises at least one cylinder slot (4).
4. The device according to Claim 2, characterized in that in conveying direction (3) a second radiation/drying source (9) is arranged upstream of the nip (10) at a spacing from the impression cylinder (2).
5. The device according to Claim 2 or 4, characterized in that at least one of the radiation/drying sources (8; 9) can be activated zonally or partially or format-based.
6. The device according to Claim 2, characterized in that a sheet delivery (d) is arranged directly downstream of the foil transfer couple (B), wherein the conveying device (22) for the delivery of the sheet material (6) in conveying direction (3) is arranged immediately downstream of the impression cylinder (2) of the foil transfer couple (B).
7. The device according to Claim 2, characterized in that based on the format of the cold foil material (7; 7.1 - 7.4) can be transported through the nip (10) in conveying direction (3).
8. The device according to Claim 2 and 3, characterized in that during the passage of the cylinder slot (4) the transport of the cold foil material (7; 7.1 - 7.4) in the nip (10) can be stopped.
9. A device according to Claim 2 and 3, characterized in that during the passage of the cylinder slot (4) the cold foil material (7; 7.1 - 7.4) in the nip (10) can be transported in the direction of the foil storage reel (13).
10. The device according to Claim 2, characterized in that in conveying direction (3) after the discharge gap (11) a deflection means (15) for conveying away the foil substrate (7.1) with separating layer (7.2) and the non-imaging foil layer (7.3) is arranged and in that the deflection means (15) is out of contact with the impression cylinder (2) guiding the sheet material (6).
11. The device according to at least Claim 2, characterized in that an embossing couple (E) is arranged in conveying direction (3) downstream of the foil transfer couple (B).
12. The device according to at least Claim 2, characterized in that based on the format the cold foil material (7; 7.1 - 7.4) can be transported through the nip (10) in conveying direction (3).
13. The device according to at least Claim 2 and 3, characterized in that during the passage of the cylinder slot (4) the transport of the cold foil material (7; 7.1 - 7.4) in the nip (10) can be stopped.
14. The device according to at least Claim 2 and 3, characterized in that during the passage of the cylinder slot (4) the cold foil material (7; 7.1 - 7.4) in the nip (10) can be transported in the direction of the foil storage reel (13).
15. The device according to at least Claim 2, characterized in that in conveying direction (3) after the discharge gap (11) a deflection means (15) for conveying away the foil substrate (7.1) with separating layer (7.2) and the non imaging foil layer (7.3) is arranged and in that the deflection means (15) is out of contact with the impression cylinder (2) guiding the sheet material (6).

Images