ES2363445T3 - GOFRADO COATING FOR RIGID-ELASTIC PRINTING MATERIALS. - Google Patents

Abstract

The method involves transferring an image-providing or covering layer in an area from a transfer foil (5) provided with an adhesive. A rigid-elastic printed sheet is supplied as a sheet metal board or a plastic sheet into a printing machine. A transfer gap (6) is provided with an image-moderate or holohedral foil coating on a printed or laminated and/or unprinted or unlaminated side over the transfer foil. The metallic and/or plastic printed sheet is dried before and/or after applying the foil coating. An independent claim is also included for a device for transferring a function layer of a transfer foil on a printed sheet.

Description

The invention concerns a method and a device for transferring image-forming or covering layers of a transfer film to printing sheets according to the preamble of claim 1 and claim 8, respectively.

The production of metal layers on printing sheets by means of a film transfer process is known. Thus, in EP 0 569 520 B1 a printing material and a printing device using this material are described. Printing mechanisms and a cladding mechanism are arranged in a sheet manipulator machine with a sheet arrimator and a clamp. In at least one printing mechanism an adhesive pattern is applied as the printing subject by the flat printing process. In the coating mechanism located after the printing mechanism are provided a printing counter-cylinder, a pressing roller and a film guide. In this, a strip of film is driven from a film reserve roll through the transfer slit of the coating mechanism between the printing counter cylinder and the pressing roller and said strip is rolled again on the exit side after leaving The coating mechanism. The transfer film contains a support film on which functional layers of different nature may be applied, such as metal layers, for example aluminum, or plastic layers. Between the functional layer and the support film a separation layer is provided by means of which the functional layer can be removed from the support layer.

Once a printing sheet is provided with a flat adhesive hand or an adhesive pattern, it is led through the coating mechanism, where the printing sheet resting on the printing counter cylinder is put in conjunction with the material film by means of the pressing roller. The functional layer located below establishes an intimate connection with the areas of the printing sheet provided with adhesive. Next, the functional layer is adhered to the area of the patterns provided with adhesive or the areas of glue that occupy the entire surface, the functional layer of the transfer film being removed in the area of the adhesive patterns. The printing sheet is raised in the coated state.

An embossing device is known from WO 2005/100035 A2. A printing mechanism of a printing machine is equipped there to perform a cold film transfer from a transfer film to a printable material provided with a glue image. It can also be contemplated that several coating modules are provided one after the other within the printing machine.

From JP 2003-275658 A a process for the manufacture of printed metal plates and a corresponding printing machine are known. An offset printing machine is shown for printing metal material in the form of a strip on one or both sides. In order to improve the quality, it is foreseen that the shape cylinder is driven with the speed of the metal band and that the transfer cylinder is driven with a slightly higher speed to compensate for the clearance in the drive train and, therefore, the inaccuracies of impression.

Also, a procedure and equipment for the manufacture of plastic cards are known from DE 101 38 864 A1. In a sheetfed offset printing machine, a rigid plastic printing sheet is flexed on both sides with one or more printing inks that are dried by radiation, and said sheet is deposited on a stack. In a subsequent operation, the printable material is coated on both sides in a gluing-lining machine with a thin transparent film.

The fact that these cannot be used flexibly, they require extensive knowhow about complex processes and are difficult to handle, is disadvantageous. Above all, the production processes known so far are limited to the handling of printable paper or cardboard materials. Until now, a coating of printable metal or plastic materials has not been disclosed by the cold film embossing process.

Therefore, the problem of the invention consists in providing a method according to the preamble of claim 1 and a device according to the preamble of claim 8, by means of which a coating with film of metal printing sheets or Different quality film in a simple, safe, cost-effective and accurate way, the procedure and the device must be easy to handle.

The solution of this problem is obtained in a method according to the characteristics of claim 1 and in a device according to the characteristics of claim 8.

It is advantageously proposed a process whose use for the application of film also makes printable materials of metal or plastic films possible by a prior treatment thereof. Functional packages can thus be provided with, for example, decorative effects, using a rotary sheet printing machine and the film coating being carried out by the cold film embossing process.

The application of film on printable metal or plastic materials should be carried out here in combination with an offset printing machine equipped with varnishing modules that are placed before or after. The application is carried out in the printing mechanism or in a varnishing module. Before or after application, it is also possible to carry out an intermediate printing and drying, for example with the help of a UV dryer.

The procedure is determined in the first place by the fact that the film application is carried out as a thinning application or function application on metallic printable material in combination with the so-called sheet metal printing process. The online procedure for the application of film on metallic printable materials widens the spectrum of uses.

Also, the process may also include the application of film as a fine-tuning application or function application on printable plastic material. Indeed, relatively thick plastic films have the characteristic of sheet metal in terms of strength and stiffness, but also in terms of surface properties.

Also, the pretreatment of the printable metal or plastic material and the application film can be carried out by means of a corona discharge treatment.

Finally, it is possible to take advantage of the use of UV drying systems with reduced heat in combination with the application of film during cold bonding. The fact that a reduced heat input is produced is advantageous in the process. This results in a strongly reduced registration offset, which is especially important for printable metal or plastic materials.

For the film application procedure on printable metal or plastic materials, the following steps are planned:

one.

Feeding of the printable material by an arrimador, possibly by means of a so-called roll-up arrimador in front of the roll.

2.

Pretreatment by crown or plasma of the printable material of metal or plastic in the area of arrimado of sheets or a module of arrimado.

3.

If necessary, precoating in a varnishing module or in the first printing mechanism by means of an integrated varnishing equipment with primer, white covering or iriodine varnish.

Four.

Preparation of printing sheets for coating by means of intermediate UV or excimer dryers. Eventually in a printing mechanism.

5.

A flip of the printing sheets may be provided.

6.

Intermediate dryers: conventional UV dryers or reduced heat systems, such as excimer radiators or NIR (near infrared) systems.

7.

Due to the deformation of the films before and after application, heat-reduced UV drying systems should preferably be used.

8.

The application of glue is carried out by means of a printing mechanism or a varnishing mechanism.

9.

Film application through the transfer slit, preferably with tangential guidance of the film and with small hugging of the pressing roller.

10.

A corona treatment of the film to be applied is possible.

eleven.

Printing by means of one or several inks and intermediate drying.

12.

The varnishing modules for fine tuning with intermediate drying or final drying are associated with the printing mechanisms.

13.

Before or after the application of the film inkjet systems are added for personalization purposes (also suitable in strip and withdraw printing systems).

14.

The sheet inspection system secretes maculature sheets, for example, by means of a sheet bypass needle, a double hook-up or a marking by means of a strip embedding device.

As devices for performing the procedure, rotary sheet printing machines are considered. These may be constructed in the manner of offset printing machines of known sheets or in the manner of flexographic printing machines having a flat sheet guide. The latter is especially advantageous for the handling of sheet metal or in the case of printable rigid film materials.

In the following the invention is described in more detail with the help of graphic representations. They show in these:

Figure 1, a printing machine with a film transfer equipment, Figure 2, a configuration of a sheet printing machine with coating mechanism,

Figure 3, a second configuration of a sheet printing machine according to Figure 2 and

Figure 4, a sheet printing machine with flat sheet guide.

Figure 1 shows parts of a rotary sheet printing machine that contains two printing mechanisms and is used for the following purposes:

-A printing sheet is primarily provided with a flat adhesive pattern or image former

(printing mechanism as an applicator mechanism 1). -In the following printing mechanism the printing sheet is conducted together with the transfer film

5, under pressing, through a transfer slit 6 (cladding mechanism 2).

The applicator mechanism 1 may be an offset printing mechanism known per se with an inking mechanism 11, an flat-holder cylinder 12 and a print-holder cylinder 13. The print-holder cylinder 13 cooperates with a printing counter-cylinder 4. The coating mechanism 2 may also be formed by an offset printing mechanism. The transfer slit 6 in the cladding mechanism 2 is formed by a pressing roller 3 and a printing counter cylinder 4. The pressing roller 3 can correspond to the printing stamp holder cylinder. The pressing cylinder 3 can also correspond to the shape cylinder of a varnishing module. Within the coating mechanism 2 used for the transfer of the film is shown a band guide 14 for the transfer film 5. The transfer film 5 is introduced and removed again through protective equipment 15 of the coating mechanism 2.

Alternatively, as shown in relation to the applicator mechanism 1, a film transfer device integrated in the applicator mechanism 1 can be provided, thereby creating an integrated film application module. In this case, a press roller 3 'is associated with a printing counter-cylinder 4 in a position postponed to a printing slit between the printing stamp holder or form holder 13 and the printing counter-cylinder 4. Thus, after coating the printable material by means of the applicator mechanism 1, the band 5 'of a transfer film can be fed to a transfer slit 6' formed as said above and can also be evacuated directly again. Cold film embossing is thus carried out in a single integrated FA film application module, as indicated in Figure 1.

As schematically shown in the applicator mechanism 1 in Figure 1, in an integrated film application module FA an applicator mechanism can also be arranged in a compact construction mode within the coating module. To this end, a glue applicator device 1 'will be associated with the printing counter-cylinder 4 and placed before the transfer slit, which would be provided here between the rubber seal cylinder 13 and the printing counter-cylinder 4. The transfer film 5 would be conducted here around the rubber seal cylinder 13 or would be conducted through the designated printing slit passing approximately tangentially in front of said cylinder.

A glue applicator device 1 'of this class can consist of a compact form cylinder to support a printing form for the glue and an applicator mechanism consisting of a camera scraper and a hatched roller to feed the glue. Once again integrated in the same printing counter-cylinder 4, the application of glue on the printable material is carried out here first and then directly the film is applied.

The film reserve roll 8 is associated with the coating mechanism 2 on the sheet feed side. The film reserve roll 8 has a rotation drive 7 for the continuous regulated feeding of the transfer film 5 to the coating mechanism 2. In the feeding of the film, forwarding or tensioning rollers can be provided to guide the film. transfer 5 under a substantially constant tension with respect to the pressing roller 3. On the exit side of the printing mechanism a roll 9 film collector is provided for the film material consumed. It is always advantageous to have a rotation drive 7 in the roll 9 film collector. It can even be provided that the transfer film 5 is transported on the output side by means of the rotation drive 7 and on the input side be held tight by means of a brake.

The pressing roller 3 (as a printing seal cylinder or a form-forming cylinder or separate pressing roller) has a compressible or damping element on its surface, for example also provided with a compressible intermediate layer. To this end, the pressing roller 3 may be provided with a pressing coating 10, for example as a plastic sheath, comparable to a rubber blanket or a printing blanket, which is held against tensioning devices in a cylinder channel.

In order to ensure the profitability of the coating process, the advance of the transfer film 5 of the film reserve roll 8 to the transfer slit 6 and the roll 9 film collector can be controlled step by step, stopping the film transfer 5 when no transfer of image forming or covering layers should be performed.

Another improvement in the use of the film of the described class is obtained when the transfer film 5 is divided into one or several partial film bands of smaller width.

Also, in the film application module thus formed, constituted by the applicator mechanism 1 and the coating mechanism 2, dryers 6 can be provided by means of which the glue hand or the entire film coating can be dried. They come into consideration here, for example, UV dryers.

Also, the film application module may contain a surveillance device 17 to explore the surface of the sheet. The monitoring equipment 17 makes possible the evaluation of the image contents of the coating and the detection of defects in the film coating.

With the device described above it is possible to coat or seal or glue-line printable materials in terms of their image or in terms of all or part of their surface, or provide them with a particularly resistant surface layer. To this end, the film transfer equipment is arranged in a printing or varnishing mechanism postponed to the printing mechanisms of a sheet printing machine. In this arrangement the surface of the fresh impression is refined or protected by means of the film coating. For other cases of application, a second equipment of this kind located inside the rotary sheet printing machine can also be arranged behind the first film transfer equipment, thus making it possible to cover a double film of a sheet.

Likewise, a configuration can be contemplated that provides a first film application module in front of the first printing mechanism by transfer of an ink or a coating and a second film application module behind the last printing mechanism by ink transfer. A first film coating can thus be applied directly on the printable material and a second film coating can be applied on the print image disposed thereon.

Using a previously described equipment for performing the cold film embossing process, procedures can also be carried out with the use of which a single film coating or a multiple film coating of functional packages to be coated on one or both sides is possible, for example with decorative properties, inside a rotary sheet printing machine.

By combining coating units, such as, for example, varnishing modules, sheet flipping equipment and coating modules, a film application on one or both sides can advantageously be made possible here. By means of the methods and devices according to the invention, it is also possible to produce effects and functions applications or composite film packages in combination with a printing capacity on both sides of the printable material.

The procedure is characterized in a first step because the film application as a thinning application or function application on metallic printable material is eventually carried out in combination with the so-called sheet metal printing process. As metallic printable materials, sheet metal plates based on tinplate, aluminum or similar or stratified metals are considered. Likewise, as printable metallic materials can also be understood printable materials based on paper, cardboard or plastic coated with a metallic film. However, printable plastic materials having a characteristic of the material similar to sheet metal in terms of strength, rigidity and surface quality can also be treated here.

In a second point, the pretreatment of the printable metal or plastic material and the application film is carried out by means of a corona treatment. In a third point, the use of heat-reduced UV drying systems is used in combination with the application of cold-bonded film. For this purpose, the film can be guided tangentially through the transfer slit or by hugging the rubber seal cylinder.

According to the invention, the application of the film on printable metal or plastic materials should now be carried out in combination with an offset printing machine equipped with overlapping or postponed varnishing modules. The application is carried out in a printing mechanism or in a varnishing module. Before or after application of the film, printing and intermediate drying can also be carried out, for example with the help of a UV dryer.

In the printing process of printable metal or plastic materials, so-called UV printing inks are frequently used. UV printing inks can harden very quickly and efficiently using UV dryers, so that a layer of ink firmly adhered to the metal or plastic printable material is obtained.

Also, in so-called printable materials of metal or plastic, a so-called corona or plasma treatment is often performed to improve the adhesion of the ink. By applying the surface of the film with a corona discharge or with a plasma its surface tension can be varied so that the printing inks to be applied are safely adhered. In this way an optimized aspect of printing is achieved.

Special dryers have been developed for drying UV printing inks that work at a relatively low temperature. Systems acting as conventional UV radiators or as cold UV radiators, for example as excimer radiators, are known in this regard. However, so-called NIR dryers also come into consideration.

In the handling of printable materials of metal or plastic using a coating process with film application, knowledge of the printing procedures for metallic printable materials is used. Therefore, it is possible, for example, to improve the printing capacity of sheet metal sheets or plastic sheets by applying a primer or background layer.

In the proposed process it is advantageous that the heat input by the radiation of the dryer is carried out in a manner from strongly reduced to very strongly reduced compared to that of hot-bonding. This results in a strongly reduced thermal influence on the printable metal material

or of plastic, so that a strong improvement in the printed product is adjusted with respect to the registration offset resulting from the embossing process. The online procedure for the application of film on printable metal or plastic materials especially extends the range of use of a correspondingly equipped printing machine.

For the procedure of applying film on printable materials of metal or plastic, the following steps must be provided:

one.

The printing sheets are fed to the printing machine by means of a sheet arrimador or a so-called roll sheet arrimador directly before the sheet arrimador or the printing machine, in which printing sheets are produced directly. metal or plastic from a film band.

2.

A preprocessing by crown or plasma of the surface of the printable material can be carried out in the arrimado phase, in an arrimado module or in a roll sheet crimper before the machine.

3.

A precoating of the metal or plastic printing sheets can be carried out in a varnishing module to make a background coating with a primer or a white coating or to form gloss effects with the so-called iriodine varnishes. This precoating can also be carried out in a first printing mechanism by means of a varnishing equipment integrated in this printing mechanism.

Four.

Acting by means of intermediate UV or excimer dryers, the printing sheet is then prepared for additional coating steps. One or more printing mechanisms or each of them may be equipped for this purpose with an intermediate UV or excimer dryer. These can be performed in a manner known as conventional UV radiators or as cold UV radiators. However, so-called NIR dryers can also be used here. However, because of the deformation of the film before and after application, heat-reduced UV drying systems should preferably be used.

5.

The printing machine can be provided with a sheet flipping equipment to be able to treat the printing sheets on both sides of the printing machine.

6.

The contribution of a glue coat for the application of the film is carried out by means of a printing mechanism or a varnishing mechanism or a compact coating equipment integrated in a printing mechanism. Special consideration is given to a UV glue which, like UV printing inks, can adhere well to printable metal or plastic material and dry quickly with the dryers mentioned.

7.

A corona or plasma treatment of the film layer to be applied is optionally possible. This depends on the adhesion conditions given of the surfaces involved.

8.

The film application in the transfer slit 6 is preferably carried out under tangential conduction.

or with small embracing of the transfer film 5 in the pressing roller 3, which can be formed as a printing seal cylinder, a form cylinder or a clamping roller of another kind.

9.

After application of the film, intermediate drying can be carried out again for hardening purposes with the help of the aforementioned dryers.

10.

 The printing of the necessary color subject is carried out with one or several inks and possibly with a new intermediate drying.

eleven.

 Varnish coatings for fine-tuning metal or plastic printing sheets with layers of

protection, brightness or effects can be performed with an additional intermediate / final drying. The varnishing modules necessary for this are pre-positioned or postponed to the printing mechanisms.

12.

 In the printing machine, inkjet or laser printing equipment may be provided in the sheet transport path before or after the application of the film for personalization purposes. These can also possibly be suitably associated with strip and withdrawal printing systems provided in the printing machine.

13.

 Through an integrated sheet inspection system, maculature sheets can be recognized and segregated. This is done, for example, by means of a sheet diversion needle, a double hook-up or an identification with marking strips.

The configurations of a rotary sheet printing machine necessary for these process steps, including one or more film application modules, are very diverse and are described by way of example in the following.

A first variant of a configuration of this class is shown in Figure 2. The printing machine depicted has an RB roll sheet crimper. In the roll sheet roll wrapper RB, a roll of printable material is cut, with exact adjustment, metal or plastic print sheets and these are fed to the printing machine at the working rate of the latter. Following this, a printing mechanism D or a varnishing module is arranged.

In the configuration shown, the printing mechanism D or the varnishing module is followed by an applicator mechanism 1 and a coating module 2 which can also be arranged as an integrated film application module FA within a printing mechanism. Subsequently, several additional printing mechanisms are eventually provided until the AU alzapliegos D.

Between or in the printing mechanisms D or before and / or in and / or after the film application module FA, some intermediate Z dryers are arranged with the help of which the applied coatings can be dried in respective work stations.

Discharge equipment E is provided in the feed zone of the metal or plastic printing sheets from the roll sheet roll wrapper RB to the first workstation of the printing machine. This serves to improve itself known, for example by means of a corona discharge, the surface properties of the metal or plastic printing sheets for the acceptance of coatings.

The unloading equipment E may also be integrated in the roll sheet roll wrapper RB, so that the surface treatment of the metal or plastic printing sheets is also operative for the transport of the sheets to the printing machine.

Therefore, with a printing machine of this class, a metal printing sheet cut from a roll of printable material can be coated first, then it can be coated with a film layer corresponding to an image or to the entire surface and then You can print once more in various colors. An example of this application are films for packaging or decorative sheets that, apart from printing, require additional refinement.

A second variant of a configuration of this class is shown in Figure 3. The printing machine shown has an AN sheetrier to which an unloading equipment E is associated for the treatment of the film. Next, a printing mechanism D or a varnishing module is discretionally provided. Then a single-piece or two-piece F film application module follows. Following this, a printing mechanism is again provided followed by a so-called turning equipment W. The turning equipment W serves to turn a sheet of metal or plastic printing provided with a film coating on one side. , so that the lower front face of said sheet can then be printed or coated from above.

In the configuration shown, the flipping equipment W follows an applicator mechanism 1 and a coating module 2 which can also be arranged as an integrated film application module FA within a printing mechanism. Subsequently, several other printing mechanisms are eventually provided up to the AU lancers. Before feeding the metal or plastic printing sheets to the film application module FA, these can be exposed again, although now with their rear face located above, to the action of an unloading equipment E.

Therefore, with such a printing machine each metal printing sheet can be coated first from its upper face, then it can be provided with a film coating, then it can be printed or coated, then it can be flipped, then it can be provided with an additional film coating and can then be printed once again in various colors. An example of this application is films for packaging or decorative sheets that, in addition to printing on both sides, also require additional refinement on both sides.

Also, in such machines other production possibilities are obtained taking care that the printing sheets are provided with optical or tactile patterns that are placed under the film coating and are visible or palpable through it, or by applying optical surface patterns or touch through the film itself. These coating processes can be carried out again on one side or both sides on unprinted or printed surfaces.

For example, the following production variants are still possible:

I. In the case that films of lesser value are used, the metal or plastic printing sheets can be provided in advance with a primer, that is, a bottom layer, the surface being treated beforehand so that smoothing takes place. and a preparation for the next treatment. Next, the film is applied, which is possible with greater certainty on the previously treated substrate.

II. In a module of embossing, the metal printing sheets can be previously structured

or plastic In this case, deliberate embossing of individual elements can be carried out or the incorporation of a defined surface base pattern can be provided. The film application is then carried out in the previously treated film sheets.

III. In packaging printing, each metal printing sheet can be separated in a subsequent treatment carried out in the castors. In this case, previously treated metal or plastic printing sheets or advantageously separated sheet portions can be produced which are obtained in line by means of separation procedures. As separation procedures, cutting with a knife or shear, die cutting (rotary) and laser cutting are considered.

Seen together, by means of the aforementioned equipment and procedural steps, they can be carried out in the online process in rotary sheet printing machines with offset printing or flexographic printing mechanisms, in combination with a coating equipment for printing embossed films, functional or refining applications on printable metal sheet aluminum, steel sheet, stainless steel sheet, tinplate or similar materials. Therefore, the sheet metal printing process is linked to a film transfer process and a pure application module of previously printed sheet plates or unprinted sheet plates, possibly with a previous coating, is provided.

The application can be carried out on the entire surface or leaving a free space according to the perimeter and / or width, that is to say, it can also be done taking into account the utility.

The online tuning process for sheet metal printing is suitable, for example, for decorative or similar boats. Likewise, it can be used as a functional online coating process for printing on sheet metal, for example for the interior coating of food containers.

A corresponding printing machine can be configured flexibly using offset printing or flexographic printing mechanisms (see Figure 4).

The following processes can be performed in sheet metal application machines:

-Application of printing on sheet metal on both sides or on one side (if possible with flip) -Preprinting of the printable material -Pre-treatment by crown of the transfer film 5 of the printable material -Intermediate dryer (final dryer) of UV after application - Printable material also as a thick resistant film or metallic laminated printable material, for

example also sandwich material with metal insert, imitation wood, pertinax, for example for

manufacture of wooden structures on support material consisting of an imitation of a panel

Wood - Pre-winding of printable material and roll sheet wrapper - The machine concept can be realized in the manner of a direct flexographic printing machine:

conduction of sheets in a plane, an offset printing mechanism can also be integrated. He

sheet transport is carried out by means of aspirating belts, clamp systems -Therefore, the transport of the printable material can be carried out by plane or, as is known, in cylinders

sheet driving rotary

Figure 4 shows a configuration of a direct flexographic printing machine. Printing mechanisms D are shown consisting of a printing counter cylinder and a form cylinder. The cylinder holder carries a so-called cliché in flexographic printing machines. The cliché is supplied with printing ink for the transfer of images by means of an inking mechanism consisting of an insertion roller and an associated camera scraper. The generation of images is carried out in the printing slit between the cylinder holder and the printing counter-cylinder, through which the sheet of printable material is conducted.

The printable material is fed here (see the arrow from the right) to a sheet transfer device T by means of a non-shown arrimador (roll sheet crimper). The sheet transfer equipment is, for example, a chain conveyor system or also includes aspirating belt arrangements. The sheet transport is carried out in one plane and passes successively in a straight line through all the printing slits.

The first two printing mechanisms are configured as an FA film application module. The first printing mechanism functions as an applicator mechanism 1 to generate the image of glue on the printable material. The second printing mechanism functions as a coating mechanism 2. It has a printing counter-cylinder 4 already mentioned of a flexographic printing mechanism which, together with a pressing roller 3, forms a transfer slit 6. The pressing roller 3 is formed by the cylinder holder of which the inking mechanism has been removed in this case. The coating can be carried out here in the manner described above, although the manipulable printable materials can be substantially thicker and stiffer than in rotary printing machines of known sheets.

In this configuration, discharge devices E can also be used. Dryers can also be used or they are convenient. The printing mechanisms shown can also be combined with offset printing mechanisms.

List of reference symbols

one

Applicator mechanism

2

Coating mechanism

3

Pressing roller

4

Print counter cylinder

5

Transfer film / film band

6

Transfer Slot

7

Roll drive

8

Film backup roll

9

Film collector roll

10

Press Coating

eleven

Inking mechanism

12

Flat Iron Cylinder

13

Print Seal Holder Cylinder

14

Guide team

fifteen

Print mechanism protection

16

Dryer

17

Surveillance team

18

Oscillating roller

one'

Applicator mechanism

3'

Tightening roller

5'

Movie band

6 ’

Pressing Slit

D

Printing mechanism

AN

Sheet Arrimador

RB

Roll-up wrapper

AU

Twigs

5

FA Film application module

W

Dump equipment

AND

Unloading equipment

T

Sheet transfer equipment

Claims (13)

1. Procedure for transferring image-forming and / or covering or coating layers of a transfer film (5) to printing sheets in a sheet handling machine, especially a rotary sheet printing machine, at least with a mechanism applicator (1) to make a coating with a glue according to the image or over the entire surface of a printing sheet and with at least one coating mechanism (2) to transfer image-forming layers or coverings of the transfer film (5 ) to the printing sheet, where a transfer slit (6) is formed in a coating mechanism (2) and the transfer film (5) is placed along the surface of the pressing roller (3) and with the face coated on a printing sheet and can be conducted under pressure together with it through the transfer slit (6), so that the image-forming or coated layers flush are transferred from the transfer film (5) to the printing sheet and adhered in areas provided with glue, characterized in that -Rigid-elastic printing sheets such as sheet irons or plastic sheets can be fed to the printing machine from a sheet feeder in charge of handling sheet plates or plastic sheets or plastic films, - which are provided in a transfer slit (6), on at least one printed or coated or unprinted or unprinted or uncoated first face, of a film coating according to the image or over the entire surface derived from the transfer film (5), and - the metal or plastic printing sheets are dried after the application of the film coating and -the sheets of film are provided, on the face thus coated, with one or more printing images by means of printing ink and -Applicable means of UV coating are applied as glue and / or as liquid coating means and / or as printing inks.

2.

Method according to claim 1, characterized in that, prior to the application of the film coating, each printing sheet is provided with a coating of a liquid medium for surface treatment or coloring purposes.

3.

Method according to claim 1 or 2, characterized in that, before the application of coatings, each printing sheet is treated by means of a device to influence its surface tension.

Four.

Method according to claims 1 to 3, characterized in that the printing sheets are turned after a coating of a first face on the sheet handling machine and because the printing sheets are provided, on the opposite side to the coated side, with a additional coating based on one or more components, and because the coating of the upper face and / or of the lower face includes a film coating from a transfer film (5).

5.

Method according to claims 1 to 4, characterized in that an optical functional layer is generated by means of the film coating transferred from the transfer film (5) and performed according to the image or over the entire surface.

6.

Method according to claims 1 to 4, characterized in that a functional layer forming structures is generated by means of the film coating transferred from the transfer film (5) and performed according to the image or over the entire surface.

7.

Method according to claims 1 to 6, characterized in that the coatings applied on the metal or plastic printing sheets are dried, alone or in combination.

8.

 Device for transferring functional image-forming and / or covering or coating layers of a transfer film (5) to printing sheets, comprising at least one applicator mechanism (1) for making a coating with a glue according to the image or over all the surface of the printing sheets and at least one coating mechanism (2) for transferring the functional layers of the transfer film (5) to the printing sheets, wherein each coating mechanism (2) has a transfer gap (6) in which the transfer film (5) is conducted under pressure by touching at least tangentially a pressing roller (3) and placed with the coated face on the printing sheet, so that the functional layer is transferred from the transfer film (5) to the printing sheets adhering firmly in the areas provided with glue, and where the rotary sheet printing machine, its units Work units or their sheet transport modules responsible for driving the sheets are provided with drying equipment in the area located after the application site of a coating, characterized in that the sheet handling machine is a rotary sheet printing machine which has a plurality of work units configured as printing units (D) and / / between a sheet metal wrapper (AN) suitable for metal or plastic printable materials and a hose clamp (AU) suitable for printable metal or plastic materials or of

varnishing and / or coating, because the printing mechanisms (D) discretionaryly have a coating module for liquid media, preferably a varnishing module, because the rotary sheet printing machine has, before or after the coating units (D) associated with at least one film application module (FA) containing an applicator mechanism (1) and a coating mechanism (2), Y the applicator mechanism (1) and / or the overlay coating module and / or the printing mechanisms (D) are designed to print UV curable media, and It is provided for the coating mechanism (2) at least one UV dryer intended to dry the glue layer present under the film coating after its transfer to the printable metal or film material.

9.

 Device according to claim 8, characterized in that the rotary sheet printing machine has, in the feeding area of unprinted or uncoated sides of the printing sheets to a work unit (D, FA, 1), a computer discharge (E) by which the metallic printing sheet can be exposed to a surface treatment, or because the rotary sheet printing machine presents, in the feeding zone of a transfer film (5) to a work unit ( FA, 1) transfer film manipulator, a discharge equipment (E) by means of which the face of the transfer film (5) presenting the transfer layer can be exposed to a surface treatment.

10.

Device according to claims 8 and 9, characterized in that the printing machine has the following configuration in the direction of transport of the sheets between the sheet arrimador (AN; RB) and the leaflets (AU):

-a varnish module or a printing module (D), -a film application module (FA), -n printing mechanisms (C).

eleven.

Device according to claim 8, characterized in that the rotary sheet printing machine, its work units or its sheet transport modules responsible for driving the sheets are provided with drying equipment in the area following the application site of a coating .

12.

Device according to claims 8 to 10, characterized in that the printing mechanisms (D) are constructed as flexographic printing mechanisms, a film application mechanism (FA) being formed by using two printing mechanisms.

13.

Device according to claims 8 to 11, characterized in that the printing mechanisms (D) are coupled to each other by means of sheet transfer equipment (T) such that the transport of the printable material is carried out in a straight line in a plane that extends through the printing slits of all printing mechanisms (D) and the film application module (FA).