JP2007532348A - Equipment for embossed film printing - Google Patents

Abstract

  In order to transfer the coating from the carrier film to the printed sheet in the form of an image line, an adhesive is applied to the printed sheet in the form of an image line. In this case, in the coating apparatus 2, the carrier film coated in the shape of the image line portion passes through the printed sheet in a state where the printing pressure is applied, and thereby the coating adheres to the adhesion portion. Thus, the image line portion is established. In order to improve the degree of freedom when used in a printing press, either the coating device or the coating device 1 and the coating device 2 are provided in one or more coating modules of the printing press, The small film transfer module F is configured by a simple method.

Description

  The present invention relates to an apparatus for embossed film printing in a coating module having an apparatus for transferring an image area providing layer from a carrier film to a printed sheet.

  It is known to form a metal layer on a printed sheet by a film transfer method. For example, Patent Document 1 describes a printing material and a printing apparatus using the printing material. In this document, a sheet processing machine is shown. The sheet processing machine includes a paper feeding device and a paper discharging device. Between these two mechanism groups, a plurality of printing devices and one coating device are provided. In at least one of these printing devices, the adhesive pattern is applied to the printed sheet by a lithographic printing method. This adhesive pattern is applied by a cold press method and has a specific subject (Sujet) that provides an image area. A film guide is provided in a coating apparatus including an impression cylinder and a transfer cylinder following the printing apparatus. The film guide is configured such that a film strip or transfer film from the film roll is guided between the impression cylinder and the transfer cylinder through the transfer gap of the coating apparatus. After exiting the coating apparatus, the filmstrip is rewound on the discharge side. The transfer film has a carrier layer. The carrier layer can be provided with an image line providing layer such as a metal layer such as aluminum. A separation layer is provided between the metal layer and the carrier film. With this separation layer, the metal layer can be peeled from the carrier layer.

  When the printing sheet is transported in the printing apparatus, an adhesive pattern is applied to each printing sheet. Thereafter, the printed sheet is guided through the coating apparatus. At that time, the printed sheet placed on the impression cylinder is brought into contact with the film material by the transfer cylinder. At that time, the metal layer facing downward adheres closely to the area on the printed sheet on which the adhesive is applied. After further transport of the printed sheet, the metal layer adheres only in the area of the pattern where the adhesive is applied. That is, in the region of the adhesive pattern, the metal layer is peeled from the carrier film. The transfer film thus consumed is wound up again. The printed sheet is discharged in a coated state.

It is known to use this type of coating device, for example, in a printing device of a printing press. However, this makes it impossible to use the printing apparatus to print the image line portion. Further, if the equipment is changed for the printing apparatus, the cost increases.
European Patent No. 5695520

  The subject of this invention is providing the apparatus which enables it to use a printing machine appropriately according to a condition, when using for embossed film printing.

  The above-mentioned problem will become clear from the features of claim 1.

  The coating module is preferably placed behind one or more printing devices of the printing press. Furthermore, it is preferable that the transfer film is in contact with the printing material on the impression cylinder via the transfer cylinder in at least one of the coating modules.

  The coating apparatus is preferably arranged at an arbitrary position inside the sheet processing machine that accommodates the coating apparatus. Thus, in the case of a printing press equipped with a plurality of printing devices, it is possible to apply a coating or metal coating layer that provides an image area before, after, and during the application of the printing ink layer. become.

  For this purpose, the coating device is preferably configured as a portable unit-type coating module.

  According to the apparatus according to the present invention, it is preferable that a plurality of coating apparatuses are continuously provided in the sheet processing machine in a particularly simple manner. This allows coatings or metallization layers that provide different image areas to be continuous within one subject area. In this case, in the first coating apparatus, a further adhesive pattern including the first adhesive pattern is subsequently applied so as to apply the coating for providing the first image portion to the first adhesive pattern and to overlap it. And a coating that provides other image areas.

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

  FIG. 1 shows an integrated film transfer module F for film transfer used in a sheet processing machine, for example, a printing machine.

  The film transfer module F is configured as follows.

  In order to convey the printed sheet, an impression cylinder 4 for guiding the sheet is provided. In order to transport printed sheets, the impression cylinder 4 has one or more holding points with corresponding printing surfaces and correspondingly one or more circumferential parts. Have.

  A coating device 1 is provided in the quadrant A of the impression cylinder 4. The coating apparatus 1 includes a plate cylinder 11, a coating roller 12, and a metering system 13. The coating device 1 can apply a coating on the printing sheet carried on the impression cylinder 4 in the shape of an image line portion via a printing plate stretched on the plate cylinder 11.

  A coating device 2 is provided in the quadrant B of the impression cylinder 4. The coating apparatus 2 is used for film transfer printing and includes a transfer cylinder 21. This transfer cylinder forms a transfer gap 6 together with the impression cylinder 4. Further, the coating apparatus includes a film stock roll 22, a film collection roll 23, and a web guide for a web-like film 24 composed of a transfer film that is guided so as to go around the transfer cylinder 21. Is provided. The cylinder may correspond to a plate cylinder and an impression cylinder of a coating module of an offset printing press.

  The impression cylinder 4 may be provided with a calendar device 3 that is placed behind the coating module 2 in the rotational direction. The calendar roller 31 of the calendar apparatus 3 substantially forms a calendar gap 32 together with the impression cylinder 4.

  As described above, the integrated film transfer module F is formed. The film transfer module has two work stations. These two work stations are used for the following work processes.

  First, an adhesive pattern that provides an image line portion for a printing sheet to be coated in a printing gap 5 between a plate cylinder 21 and an impression cylinder 4 in a first work station (coating apparatus 1). Is applied by the printing plate.

  Thereafter, the printed sheet is transferred to the transfer cylinder 21 between the transfer cylinder 21 and the transfer cylinder 21 together with the web-like film 24 made of the transfer film in the subsequent work station (coating apparatus 2). 6 is guided to pass. At that time, the transfer film is pressed against the printed sheet in the transfer gap 6. By being pressed in this way, the image area providing layer is transferred from the transfer film to the printed sheet in the area of the adhesive pattern. At that time, the web-like film 24 is rotated in the direction of the rotational movement of the impression cylinder 4 by the film stock roll 22, guided so as to go around the transfer cylinder 21, and wound around the film collecting roll 23.

  Furthermore, in the calender gap 32 of the calender device 3 placed later, the image line portion providing layer transferred from the transfer film to the printed sheet can be nipped in order to improve adhesion and smoothness.

  This type of device can be used in a varnish module L of a sheet-fed printing machine. This type of varnishing module L has a basic configuration in which an impression cylinder 4 for guiding a sheet, a plate cylinder 11, an application roller 12 such as an anilox roller, and a metering quantity such as a chamber-type doctor system. And a system 13. For this application, instead of supplying a varnish, an anilox roller or a coating roller and a plate cylinder, for example, a rubber blanket or a flexographic printing plate having a recess, and the adhesive is metered into the printing material. A chambered doctor system can be used to supply.

  The structural form of the varnishing module corresponds to the printing apparatus D of the printing press in terms of the basic concept, and includes only the plate cylinder 11 instead of the plate cylinder and the impression cylinder. Further, in the varnishing module L, there is neither an ink device provided with a plurality of rollers nor a dampening device. As a result, the varnishing module L has a free structural space above the coating device. Therefore, the varnishing module L makes it possible to integrate the necessary members for film guidance in a very simple, small and easy to operate and inexpensive manner. The material to be printed is further guided through all necessary gap locations in a very suitable manner in a film transfer module F constructed as described above, with only once being added. Meanwhile, the printing material is on a single impression cylinder 4.

  FIG. 2 shows a second embodiment of an integrated film transfer module F for film transfer for use in a sheet processing machine, for example a printing press.

  The film transfer module F is configured as follows.

  In order to convey the printed sheet, an impression cylinder 4 for guiding the sheet is provided. In order to transport the printed sheet, the impression cylinder 4 has one or more holding portions having corresponding printing surfaces, and further has one or more circumferential portions corresponding thereto. Have.

  A coating device 2 is provided on the quadrant A of the impression cylinder 4. The coating apparatus 2 is used for film transfer printing. The coating apparatus includes a transfer cylinder 21. This transfer cylinder forms a transfer gap 6 together with the impression cylinder 4. Further, the coating apparatus is provided with a film stock roll 22, a film collecting roll 23, and a web guide for a web-like film 24 composed of a transfer film guided so as to go around the transfer cylinder 21 in some cases. It has been. The transfer cylinder 21 corresponds to a coating cylinder of an offset printing machine, for example, a plate cylinder of a varnishing module. The impression cylinder 4 corresponds to an impression cylinder of a coating module of an offset printing machine, for example, a varnishing module.

  A calendar device 3 that is placed after the coating module 2 in the rotational direction is provided corresponding to the quadrant B of the impression cylinder 4. The calendar roller 31 of the calendar device 3 substantially forms a press gap 32 together with the impression cylinder 4.

  The film transfer module is formed as described above. This film transfer module has two work stations for the following work steps.

  First, in a separate work station that is placed in front of the film transfer module, an adhesive pattern that provides an image area is applied to a printing sheet to be coated by a printing plate. Creating the adhesive pattern can be performed in the coating module by, for example, a relief printing method or a flexographic printing method, or can be performed by an flexographic printing method in an offset printing apparatus.

  Thereafter, the printed sheet is transferred to the transfer cylinder 21 and the impression cylinder together with the web-like film 24 made of the transfer film placed around the transfer cylinder 21 in the first work station (coating apparatus 2) of the film transfer module. 4 is guided so as to pass through the transfer gap 6 between them. By pressing the web-like film, the image line portion providing layer is transferred from the transfer film to the adhesive pattern of the printed sheet. At that time, the web-like film 24 is wound from the film stock roll 22 to the film collecting roll 23.

  Thereafter, in order to improve the adhesion and smoothness in the press gap 32 of the calender device 3 placed later in the further work station, the image area providing layer transferred from the transfer film to the printed sheet is added. Can be nipped.

  The above embodiment can be used as follows in a printing machine that guides a sheet, for example, with the configuration according to FIG. 3 or FIG.

  Here, the printing device D (shown in FIG. 3) or the varnishing module L (shown in FIG. 4) is a film transfer module F that always functions as a coating device 2 for direct film transfer in the transport direction. In front of it. With this arrangement, a mechanical configuration in the form of a so-called double-side varnisher (Doppellackmaschine) can be used (illustrated in FIG. 4).

For a sheet-fed press according to FIG.
In the embodiment of the sheet processing machine according to FIG. 3, a printing apparatus D such as an offset printing apparatus is directly placed in front of the film transfer module F.

  The printing apparatus D includes a planographic printing plate on a plate cylinder, a rubber blanket cylinder, and an impression cylinder 4, and functions as the coating apparatus 1. Conventionally, in the offset printing method, the adhesive is applied using a lithographic printing plate in which an image line portion is formed corresponding to a desired coating. The adhesive is applied in the printing gap 5 of the printing apparatus D. Alternatively, the plate cylinder can be spaced from the printing blanket cylinder when applying the adhesive in the printing apparatus D for use in the relief printing method. In this case, the printing blanket cylinder carries a printing blanket or flexographic printing plate having a recess. In order to apply the adhesive, an application roller with a metering system, preferably an anilox roller with a chamber doctor system (for example at the installation site of the rubber blanket cleaning device) is brought into and out of contact with the printing blanket cylinder. It is provided in a contactable state.

For a sheet-fed printing press according to FIG.
In FIG. 4 showing the modified embodiment, the varnishing module L is directly placed in front of the film transfer module F. Furthermore, the printing apparatus D is directly placed in front of the varnishing module L.

  On the plate cylinder 11 of the varnishing module L placed in front of the film transfer module F, a rubber blanket cylinder having a recess or a flexographic printing plate is fixed. In this embodiment, the varnishing module functions as a coating device 1 for adhesive. Accordingly, the chamber type doctor system as the metering system 13 is used for metering the adhesive to the printing material via the anilox roller or application roller 13 and the plate cylinder 11. The printing material to which the adhesive is applied is supplied to the coating module that is placed behind the varnishing module L in the form of a film transfer module F.

  When the film transfer module F is changed to the varnishing module L, an anilox roller and a chamber type doctor system are disposed in the varnishing module L. The plate cylinder functions as a transfer cylinder 21 for the transfer film. For this purpose, a film stock roll 22 for at least unconsumed transfer film and a film collection roll 23 for consumed transfer film are provided. The transfer cylinder 21 transfers the image line portion providing layer from the transfer film to the printing material fixed to the impression cylinder 4 by the gripping portion at the transfer gap 6.

  If necessary, a calender roller 31 (in this case, the calender device 3) may be placed behind the transfer cylinder 21 in the vicinity of the impression cylinder 4 in the conveying direction.

  In the case of a specific application, for example, when the printing material has high absorbability and the adhesive quickly penetrates into the printing material, the printing device D that is placed in front of the varnishing module L has the first An adhesive can be applied to the layers as a so-called primer coating.

  In the embodiment according to FIGS. 3 and 4, one or more UV dryers 7 can each be used to use an adhesive that cures by the action of UV light. Each of the UV dryers 7 can be provided corresponding to the impression cylinder 4 behind the printing gap 5 or behind the transfer gap 6.

  The adhesive may be dried in the sheet discharge area.

  In this embodiment of the film transfer module F as well, it goes without saying that it is preferred that the printing material is guided with respect to only one impression cylinder 4 through all the gaps in a state where it is added only once.

  Details of the transfer film will be described below. The transfer film described above has a multilayer structure. This transfer film preferably has a thin film having tear resistance as a carrier layer. An image line providing layer is provided on the carrier layer via a separation layer. The separation layer is used to easily peel the image area providing layer from the carrier layer. The image area providing layer can be, for example, a metallized layer, a glossy layer, a textured layer, an inked layer, or a layer containing a single image area pattern.

  The transfer film is used for so-called embossed film printing. When embossed film printing is performed, an adhesive pattern providing an image area is applied to a printed sheet. Such application can be easily performed by an offset printing method. Thereafter, the coating surface of the transfer film is placed on the printed sheet in a state where printing pressure is applied, so that the image line portion providing layer of the transfer film has a corresponding image line pattern. It will adhere to the printed sheet and will be peeled off from the transfer film.

  In the above-described apparatus for embossed film printing, the film stock roll 22 is provided corresponding to each coating apparatus 2 on the sheet supply side. The film stock roll 22 includes a rotation drive unit. The rotation driving unit is required for supplying the film to the coating apparatus 2 in a state where the unconsumed web-like film 24 of the transfer film is continuously controlled. Therefore, the rotation drive unit can be controlled. Further, on the discharge side of the coating apparatus 2, the used web-like film 24 is wound around the film collecting roll 23. Again, a controllable drive can be provided to optimize manufacturing. Furthermore, a tension roll 25 may be provided in the film guide area. The tension roll 25 is provided adjacent to the transfer cylinder 21 so as to be related to supplying the web-like film 24 to the transfer gap 6 and carrying it out of the transfer gap 6. By this tension roll 25, the web-like film 24 is always held at a tension equal to the transfer cylinder 21.

  In the embodiment according to FIGS. 5 and 6, the film is guided by a special method in which the tension roll 25 is provided adjacent to the transfer cylinder 21 as in the embodiment of FIG.

  According to FIGS. 5 and 6, the tension roll 25 is provided in the vicinity of the transfer gap 6 so that the web-like film 24 is guided to the transfer gap 6 in a state of being substantially tangent to the surface of the transfer cylinder 21. Preferably it is. By guiding the web-like film 24 in a tangential manner in this way, the contact surface between the web-like film 24 and the surface of the transfer cylinder 21 can be minimized, so that the friction ratio between the web-like film 24 and the transfer cylinder 21 is reduced. Is reduced. With the above configuration, the web-like film 24 has an advantage that it can be transported in the transport direction using the clock operation method (Taktbetrieb) in consideration of, for example, the passage of grooves (in the transfer cylinder 21) or the main part. It is. When the web-like film 24 is conveyed by the clock operation method, when coating is not performed, or when the transfer action between the surfaces of the cylinders cooperating with the transfer gap 6 is interrupted and the grooves of the cylinder pass through It is preferable that the web-like film 24 is always stationary. In this case, a relative movement inevitably occurs between the web-like film 24 and the surface of the transfer cylinder 21.

  In a further configuration, in relation to the corresponding film stock roll 22 and the film collecting roll 23 provided corresponding to the film stock roll, a plurality of web-like films 24 are spread over the plate width in the roll axial direction. They can be provided parallel to each other. The film stock roll 22 and the film collection roll 23 can be selectively operated together or in pairs in a clocked manner with respect to each of the plurality of web-like films 24. The clock operation method of the web-like film 24 is preferably performed by, for example, a drivable film stock roll 22 and a film collecting roll 23 connected to a mechanism control unit. For the clock operation method, a film loop (Folienschlaufe) and a known film reservoir (Folienspeicher) are provided. The film loop can be formed, for example, by wrapping around a dancer roller.

  The surface of the transfer cylinder 21 is stretched with a plastic coating corresponding to a rubber blanket or a printing blanket. The plastic coating has a predetermined flexibility. Furthermore, the surface of the plastic coating is very smooth and has low adhesion to the transfer film. The plastic surface allows the image area providing layer to be transferred cleanly to the printed sheet. Further, by configuring the plastic coating to be elastic, a relatively wide printing gap is generated. Further, when the impression cylinder 4 has a diameter twice as large as that of the transfer cylinder 21, the transfer gap 6 is further enlarged. By all the above means, a wide printing surface in the transfer gap 6 can be achieved, and the surface of the transfer cylinder 21 pressing the transfer film can be reliably moved in the impression cylinder 4. . By these means, even a very fine pattern can be reliably transferred from the image line portion providing layer to the printed sheet.

  In addition to the features of the device described above, if necessary, for example, an additional processing unit for embossing, cutting or drilling, a varnishing device for surface finishing of the material to be printed, or an overprinting device, film It can be placed behind the transfer module.

  After transferring the transfer film to the printing material and, if necessary, after pressing and smoothing after the transfer, the conventional offset printing ink is applied to the film on the printing material. Alternatively, so-called UV ink overprinting or Aufdruck and / or varnishing the coating that provides the image area from the transfer film, eg UV varnishing in combination with excimer drying That can be done.

  For this purpose, at least one printing device and / or at least one varnishing module is placed behind the film transfer module. For example, gloss can be further increased by further varnishing the coating that provides the image area from the transfer film.

  The present invention can be implemented within the scope of the above embodiments, but is not limited by the specific features of these embodiments.

It is the 1st schematic diagram of the film transfer device in an impression cylinder. It is the 2nd schematic of the film transfer apparatus in an impression cylinder. It is a figure of the 1st mechanism provided with a film transfer apparatus. It is a figure of the 2nd mechanism provided with a film transfer apparatus. It is a figure which shows a mode that the film by FIG. It is a figure which shows a mode that the film by FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Application | coating apparatus 2 Coating apparatus 3 Calendar apparatus 4 Impression cylinder 5 Printing gap 6 Transfer gap 7 UV dryer 11 Plate cylinder 12 Coating roller 13 Metering system 21 Transfer cylinder 22 Film stock roll 23 Film collection roll 24 Web-like film 25 Tension roll 31 Calendar roller 32 Calendar gap A Quadrant B B Quadrant D Printing device F Film transfer module L Varnishing module

Claims (17)

An apparatus for printing an embossed film on a printed sheet,
At least one applicator for applying a coating to the printed sheet using an adhesive in the form of an image line;
A coating device for transferring the image area providing layer from the transfer film to the printed sheet;
With
The coating apparatus includes an impression cylinder and a transfer cylinder,
The transfer film can be guided around the transfer cylinder,
Thereby, in the apparatus in which the image line providing layer adheres to the printed sheet in the area where the adhesive is applied on the image line area and is peeled from the transfer film,
The film transfer module (F) is directly placed against the printing device (D) or varnishing module (L) of the sheet processing machine,
The film transfer module (F) is a coating module or varnishing module (L) of a sheet processing machine,
The transfer cylinder (21) is the plate cylinder of the coating module or varnishing module (L) in the film transfer module (F), or the impression cylinder (4) of the coating module or varnishing module (L). An apparatus, characterized in that it is placed behind the plate cylinder. An apparatus for printing an embossed film on a printed sheet,
At least one applicator for applying a coating to the printed sheet using an adhesive in the form of an image line;
A coating device for transferring the image area providing layer from the transfer film to the printed sheet;
With
The coating apparatus includes an impression cylinder and a transfer cylinder,
The impression cylinder and the transfer cylinder form a common transfer gap;
The transfer film can be guided around the transfer cylinder so that the transfer film passes through the transfer gap in a state where printing pressure is applied together with the printed sheet guided by the impression cylinder. To be guided,
At that time, after the printed sheet comes out of the transfer gap, the image line portion providing layer is attached to the printed sheet paper in the region where the adhesive is applied to the image line portion and from the transfer film. In the device to be peeled,
A film transfer module (F) is directly placed behind the printing device (D) or varnishing module (L) of the sheet processing machine,
The film transfer module (F) comprises at least one transfer cylinder (21) and an impression cylinder (4),
The transfer cylinder (21) is a plate cylinder of a coating module or varnishing module (L), or the impression cylinder (4) of the coating module or varnishing module (L) is A device, characterized in that it is placed after. The apparatus according to claim 1 or 2,
Inside the film transfer module (F), the transfer cylinder (21) includes a film stock roll (22) for an unused transfer film and a film collection roll (23) for a consumed transfer film. As a result, the transfer film, as a web-like film (24), passes around the transfer cylinder (21) at least partially from the film stock roll (22) and passes through the transfer gap (6). The apparatus can be guided to the film collecting roll (23). The device according to any one of claims 1 to 3,
An application roller and a metering system are detachably attached to the plate cylinder in the film transfer module (F).
An apparatus characterized in that the plate cylinder can be converted into the transfer cylinder (21) by means of a smooth compressible press cover. The apparatus according to claim 4.
On the tension member carried by the transfer cylinder or the transfer cylinder (21), the press cover as a surface member partially covering the cylindrical surface region of the transfer cylinder (21) of the coating apparatus (2) A device characterized in that it can be positioned so as to be positionable. The apparatus according to claim 4.
On the surface of the transfer cylinder (21) there is a part of a printing blanket, a corresponding plastic printing plate for treating a press surface having a contour corresponding to the area to be coated, or a contour corresponding to the area to be coated. And a pressing segment which can be glued or preferably detachably fixed is provided. The device according to any one of claims 1 to 6,
The apparatus is characterized in that the coating apparatus can be arranged at an arbitrary position inside a sheet processing machine that houses the coating apparatus. The device according to any one of claims 1 to 6,
The sheet processing machine is a printing machine comprising a plurality of printing devices;
An apparatus characterized in that the coating device is placed in front of or behind the printing device or provided between the printing devices. The device according to any one of claims 1 to 8,
The coating apparatus (2) is configured as a film transfer module (F) which is a kind of portable unit. The apparatus according to any one of claims 1 to 9,
A device, characterized in that a plurality of coating devices (2) are provided continuously in a sheet processing machine. The apparatus according to any one of claims 1 to 10,
A device, characterized in that a coating device (1) in the form of a printing device (D) is directly placed in front of the coating device (2). The apparatus according to any one of claims 1 to 10,
Device, characterized in that the application device (1) in the form of a varnishing module (L) is directly placed in front of the coating device (2). The apparatus according to any one of claims 1 to 10,
The application device (1) in the form of a varnishing module (L) and the application device (1) in the form of a printing device (D) are directly placed in front of the coating device (2). A device characterized. The apparatus of claim 3.
The transfer cylinder (21) is provided with a guide device for guiding the web-like film (24) to the transfer gap (6). The apparatus of claim 14.
The guide device is provided to guide the web-like film (24) to the transfer gap (6) in a state of being substantially tangent to the surface of the transfer cylinder (21). Do the equipment. The device according to claim 14 or 15,
The transfer cylinder (21) is provided with a tension roll (25) for guiding the web-like film (24) to the transfer gap (6) in a state where the web-like film (24) is substantially tangent. ,apparatus. The device according to any one of claims 14 to 16,
The web-shaped film (24) can be transported in the transport direction by a clock operation method.

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