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EP0673317A1 - Process and device for transferring prints from a support to a substrate. - Google Patents

Process and device for transferring prints from a support to a substrate.

Info

Publication number
EP0673317A1
EP0673317A1 EP93912622A EP93912622A EP0673317A1 EP 0673317 A1 EP0673317 A1 EP 0673317A1 EP 93912622 A EP93912622 A EP 93912622A EP 93912622 A EP93912622 A EP 93912622A EP 0673317 A1 EP0673317 A1 EP 0673317A1
Authority
EP
European Patent Office
Prior art keywords
substrate
embossing
station
impressions
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93912622A
Other languages
German (de)
French (fr)
Other versions
EP0673317B1 (en
Inventor
Reinwald Mitsam
Albrecht Germann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leonhard Kurz Stiftung and Co KG
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Leonhard Kurz GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG, Leonhard Kurz GmbH and Co KG filed Critical Koenig and Bauer AG
Publication of EP0673317A1 publication Critical patent/EP0673317A1/en
Application granted granted Critical
Publication of EP0673317B1 publication Critical patent/EP0673317B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/062—Presses of the rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
    • B44C1/1729—Hot stamping techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/40—Material or products to be decorated or printed
    • B41P2219/41—Web-like material

Definitions

  • the invention relates to a method according to the preamble of claim 1 for transferring impressions from a support to a substrate and a device for
  • a method for transferring an embossing foil impression from an embossing foil to a substrate and a device for carrying out this method are known from DE 32 10 551 C2.
  • This method and this device are suitable for stamping a substrate in the form of a flexible material web in an almost endless manner in its feed direction.
  • Said substrate can be, for example, a magnetic stripe on a ticket or a decorative endless stripe which has a corresponding use, i.e. a ticket or the like covered in the transport direction of the substrate from one edge of the corresponding panel to the opposite edge thereof.
  • the invention has for its object to provide a method and a device of the type mentioned, wherein it is economically possible to provide a sequentially useful substrate with individual spaced-apart impressions, the waste of carrier material is relatively low.
  • the carrier provided with the prints being well used because additional prints for at least one further row of prints are provided on the carrier between the prints for the benefits of one row of benefits.
  • the waste is therefore relatively small.
  • Another advantage over discontinuous or oscillating processes The comparatively high level of productivity for applying single image impressions to the corresponding use of substrates consists of Known oscillating embossing processes for embossing substrates in the form of sheets with multiple uses, for example, achieve outputs of approximately 4000 to 6000 sheets per hour.
  • feed speeds of the order of 130 to 200 m / min can be realized in a rotary embossing method in accordance with DE 32 10 551 C2 mentioned at the outset, which corresponds to the equivalent of approximately 12,000 to 18,000 sheets per hour which can be embossed.
  • the method according to the invention makes use of the last-mentioned rotary method by means of an embossing film or by means of a carrier which is provided with an activatable adhesive in register. It is therefore possible for the carrier and the impressions to be formed by an embossing film. In such a method it is advantageous if the carrier and the impressions are formed by a hot stamping foil. In this case, the carrier can be determined several times by a means for selective transmission
  • Imprints from the carrier on the substrate forming, segmented heated embossing roller and at least one station having a pressure roller resting on the lateral surface thereof are transported. This process requires a segmented embossing roller in order to actually only transfer the correct impressions from the carrier to the substrate, while the impressions located between these are only transferred to the corresponding substrate after the lateral displacement and the renewed feeding of the carrier to the station.
  • a very exact, ie, registration-accurate transfer of prints from a support to a substrate is obtained when the method according to the invention is carried out a hot stamping foil is used in which the distance of the stamping foil impressions in the transport direction is shorter than the distance of the stamping stamp segments on the lateral surface of the stamping roller, and if the hot stamping foil is stretched upstream in front of the stamping station in such a way that the spacing of the stamping foil impressions of the / each impression row corresponds to that Distance of the die segments corresponds.
  • This enables a precisely defined, exact assignment of the stamping foil impressions to the associated benefits of the substrate to be stamped, even at high angular speeds of the stamping roller.
  • the angle of rotation position of the embossing roller or its embossing die segments and a predetermined identifier of the substrate or each use of the substrate are matched to one another by means of a control device.
  • the last-mentioned control device is expediently a so-called insetter control.
  • Substrate or each use of the substrate can be corresponding print marks, which are detected by means of a print mark reading device and fed to the control device as control variables.
  • Possible side tolerances of the carrier with the imprints or the hot stamping foil with respect to the substrate can be compensated for by measures known per se, such as guide rollers, with support by air cushioning or the like. can be useful.
  • the feed position of the stamping film or its impressions is determined and by means of the control device mentioned the rotational angle position of the embossing station or its embossing die segments is adapted.
  • This can be done by the above-mentioned print mark reading device, which is connected to the control device in order, for. B. to influence an actuator with a superposition gear accordingly, with which the embossing roller and / or the feed rollers for the substrate or the embossing film are driven.
  • a hot stamping foil is used in the method according to the invention, it is expedient to cool it after leaving the stamping station to detach it from the corresponding stamped substrate and then to feed it to the stamping station at least one more time - offset by the distance between adjacent rows of benefits. Such a cooling can increase the embossing speed accordingly, which has an advantageous effect on the productivity of the method according to the invention.
  • the embossing film is pivoted out of the plane of the film by 90 angular degrees and deflected by a pair of displacement rollers oriented perpendicular to the embossing roller, offset transversely to the transport direction by the distance • of adjacent rows of benefits and then by a corresponding row of benefits transversely offset is fed back to the embossing station so that at least two rows of prints are imprinted simultaneously in the embossing station.
  • the displacement rollers are expediently provided in such a way that they are suitable for carrying out corresponding adjustment movements in adaptation to the particular circumstances of the substrates and supports to be imprinted.
  • the substrate can also be provided in register with an activatable adhesive which forms the means for the selective transfer of certain impressions to the substrate and which is subsequently activated before the substrate is fed to the station.
  • an energy-activatable primer or a multicomponent glue the complementary component of which, according to the impressions, is applied to the substrate in register form, can be used as the activatable glue.
  • the said primer can, for example, by its composition by ultraviolet or electron radiation or the like. to be activated.
  • the multi-component adhesive that may be used can be a two-component adhesive.
  • the agent used in the method according to the invention for the selective transfer of certain impressions to the substrate is formed by an activatable adhesive of the type described above, there is the further advantage that no segmented roller is required to transfer impressions from the support to the substrate. but a comparatively simple roller without roller segments can be used, because in this case the appropriate activation takes place in a targeted manner, for example by irradiation or by the adhesive component of the multicomponent adhesive which interacts with the complementary component.
  • a carrier is expediently used to carry out the method according to the invention, in which the prints are equidistantly spaced in a row one behind the other, because in this case the regulatory effort for carrying out the method is relatively small.
  • an embossing roller can be used in the station, the embossing stamp segments of which are spaced apart from one another in the circumferential direction and which are adapted to the benefit of each row of benefits located one behind the other in the transport direction.
  • a substrate strip wound on a roll can be used; however, it is also possible to use sheet-like substrates according to the invention, which are subsequently fed to the embossing station. In the latter case, it is consequently possible to dispense with cutting the substrate web into individual sheets after the embossing process, which may have a positive effect on the productivity of the method.
  • a storage device can be used which has a roll for a strip-like, quasi-endless substrate.
  • the storage device has a container for a stack of sheet-like substrates and a device for the continuous feeding of the individual substrate sheets to the station.
  • the station in question can be an embossing station with an embossing roller, which is attached to its outer surface the side-by-side benefits are provided simultaneously with embossing die segments that are spaced apart in the circumferential direction of the embossing roller, the distance between adjacent die segments being adapted to the benefits of each row of rows located one behind the other in the direction of transport.
  • a device is provided between the station and the storage device for selectively applying an activatable adhesive to the substrate.
  • This device can be a printing unit for applying the adhesive to the substrate.
  • Printing units of this type are known, for example, as impression units based on a flexographic printing unit. However, it is also possible to use the said printing unit as a gravure, offset or
  • the device for activating the adhesive formed by a primer can have an irradiation device.
  • this radiation device it is possible, depending on the primer used, an ultraviolet radiation, a
  • Embossing stamp segments having embossing roller the imprints of the / each imprint row provided on the carrier have a distance which is slightly smaller than the spacing of the embossing stamp segments on the lateral surface of the embossing roller, and if at least two braked feed rollers are provided upstream of the embossing station, on which the Carrier formed by an embossing foil and deflected in relation to the embossing station it is stretched that the distance between the impressions of the / each row of impressions corresponds exactly to the distance between the die segments.
  • a control device is provided in such a device of the last-mentioned type for adapting the rotational angle position of the embossing roller or its embossing die segments to a predetermined identifier of the substrate or each use thereof.
  • This control device is expediently connected on the input side to at least one reading device and on the output side to an actuator for the embossing roller and / or for the feed rollers of the substrate and / or the embossing film.
  • Said at least one reading device can be a commercially available print mark reader, and the actuator can be a known drive designed with a superposition gear.
  • At least one second reading device assigned to the stamping film is provided between the feed rollers and the stamping station and is connected to said control device.
  • the markings of the embossing film can be detected and the signals corresponding to the detected markings can be fed to the control device in order to achieve an exact association between the carrier with the imprints or the embossing film and the embossing roller or its stamping stamp segments.
  • the displacement device has at least one pair of displacement rollers which are mutually offset parallel to one another in the transport direction and transversely thereto, the transverse displacement of the displacement rollers of the / each displacement roller pair corresponding to the transverse spacing of adjacent rows of benefits of the substrate. With such a design of the transfer device, it is possible to transfer the carrier with the imprints or the embossing foil at least once in relation to those for transferring the corresponding imprints from
  • a good adaptation to the particular circumstances of a substrate, such as its dimensions, is possible if at least one displacement roller of the / each displacement roller pair is adjustable in the transport direction and / or transversely to the transport direction.
  • at least one displacement roller of the / each displacement roller pair is adjustable in the transport direction and / or transversely to the transport direction.
  • due to the adjustability of the / each pair of displacement rollers transversely to the transport direction of the substrate and consequently of the carrier or the stamping foil provided with imprints it is possible to adapt the device according to the invention exactly to any substrates with more than one row of benefits.
  • each stamping segment of the stamping roller can be formed with a heating device.
  • This heating device can be, for example act electrical resistance heating.
  • Such a device is used in connection with a hot stamping foil.
  • Figure 1 is a view of a portion of a substrate to be accurately printed with a substrate in the direction of view from above.
  • FIG. 2 shows a section of a substrate corresponding to FIG. 1 together with a section of a carrier having impressions in the form of a hot stamping film having embossing foil impressions in the viewing direction from above,
  • Figure 3 is a side view of the device for
  • FIG. 4 shows a view of the device according to FIG. 3 in the direction of view from above, only the most essential details being drawn, in particular to clarify the displacement device.
  • 5 shows a section through a segmented embossing roller drawn in sections, as used in the device according to FIGS. 3 and 4, and
  • FIG. 6 shows a representation similar to FIG. 3 of a second embodiment of the device for transferring impressions from a carrier to a substrate.
  • FIG. 1 shows a section of a flexible substrate 10 which has two rows of panels 12 next to one another.
  • Each benefit 12 which is, for example, a sheet of business stationery, a banknote or the like. can act, an impression is to be provided on a precisely defined surface section 14, which is e.g. is an embossing foil impression. According to the invention, this happens e.g. with the help of a hot stamping foil 16 (see FIG. 2) in a device such as that shown in FIGS
  • Figures 3 and 4 is drawn in a side view and in a view from above.
  • FIG. 2 shows a section of the flexible substrate 10 with two rows of panels 12 provided next to one another.
  • the division of the panels 12 of each row of panels is designated by Nt in FIG.
  • the surface section 14 to be embossed on each panel 12 of a row of panels has a distance A from the surface section 14 adjacent in the row of panels in question, which corresponds exactly to the panel pitch Nt.
  • the embossing film 16 is formed with a further embossing film imprint 20 between the said embossing film impressions 18. If the substrate 10 has three or n rows of sheets, then the embossing foil 16 is formed between the embossing foil impressions 18 with two or (n -1) embossing foil impressions 20. All stamping foil imprints 18, 20 of the stamping foil 16 are at the same distance from one another.
  • the carrier or the stamping film 16 After transferring the imprints 18 to panels 12 or their surface sections 14 of the first, i.e. in FIG. 2, the row of blanks drawn on the left-hand side, the carrier or the stamping film 16 is laterally offset downstream of the stamping station 34 by the width of the stack, which is indicated in FIG. 2 by the arrow 22.
  • the embossed foil 16, offset in this way is again fed to the station 34 in its transport direction, which is indicated by the arrow 24, offset by the distance of the immediately adjacent embossed foil impressions 18, 20, so that the rows of benefits located immediately next to one another with the corresponding impressions are now simultaneously present 18 and 20 are provided.
  • the offset of the imprints 20 relative to the imprints 18 is indicated in FIG. 2 by the arrow 26.
  • FIG. 3 shows a device 28 for applying stamping foil impressions 18, 20 (see FIG. 2) of a hot stamping foil 16 on a flexible substrate 10
  • flexible substrate 10 is provided on a supply device 30, which is a supply roll.
  • the flexible substrate 10 is drawn off in a manner known per se from the supply device 30, which is expediently a braked supply roll, via a web controller 32 and fed to an embossing station 34.
  • the embossing station 34 has an embossing roller 36 and pressure rollers 38.
  • the pressure rollers 38 are arranged, for example, in pairs on swivel arms 40, the functioning of which has been described in the aforementioned DE 32 10 551 C2.
  • the hot stamping foil 16 is provided on a supply roll 42 and is fed to the stamping station 34 via a feed roll 44.
  • the embossing foil impressions 18 corresponding to the benefits 12 of a row of benefits of the flexible substrate 10 are embossed onto the corresponding benefits 12 of the said row of benefits.
  • the embossing film 16 is then deflected together with the flexible substrate 10 around a cooling roller 46 and fed to a detachment device 48 in which the hot embossing film 16 is separated from the corresponding section of the substrate 10.
  • the hot stamping film 16 is fed downstream of the detaching device 48 via a transfer device 50 and via a second feed roller 52 to the stamping station 34, the stamping film 16 in the transfer device 50 in its transverse direction by a row of sheets and in its feed direction by the distance between immediately adjacent stamping films - Imprints 18 and 20 is offset, so that now in the
  • Embossing station 34 two adjacent rows of benefits of the flexible substrate 10 are simultaneously stamped in register with the corresponding embossing foil impressions 18, 20. After all stamping foil impressions 18, 20 have been stamped out, this becomes flexible substrate 10 downstream of the detaching device 48 fed to a receiving device 54, which is, for example, a take-up roll. At the same time, the used embossing foil 16 is also wound onto a winding roller 56.
  • the heated embossing roller 36 of the embossing station 34 is provided with a control device 58, which is indicated schematically in FIG. 3 by a block.
  • Control device 58 is connected on the input side to a reading device 60 assigned to substrate 10 and to second reading devices 62 assigned to hot stamping foil 16, which is indicated in FIG. 3 by arrows 64 and 66. Only one of these is shown in the drawing
  • Readers 62 visible.
  • a separate reading device 62 is provided for each film pass.
  • the control device 58 is connected to an actuator for the embossing roller 36 and / or for the feed rollers 44, 52 and 84.
  • the displacement device 50 downstream of the stamping station 34 or adjacent to the stamping station 34 has at least one pair of displacement rollers 68 which are oriented parallel to one another and perpendicular to the axis of the stamping roller 36.
  • the displacement rollers 68 are offset from one another in the transport direction of the hot stamping foil 16, as can be seen from FIGS. 3 and 4. From Figure 4 it can also be seen that the displacement rollers 68 of the / each displacement roller pair also in the transverse direction, i.e. more axial
  • At least one set roller 68 of the pair of set rollers can be adjustable in the direction of transport, which is indicated in Figure 4 by the arrow 70.
  • At least one displacement roller 68 is expediently adjustable transversely to the transport direction, which is indicated in FIG. 4 by the arrows 72.
  • the supply roll 42 for the hot stamping foil 16 and the take-up roll 56 can also be seen from FIG.
  • the storage device 30 and the receiving device 54 for the flexible substrate 10 can be seen from FIG.
  • the feed rollers 44 and 52 for the hot stamping foil 16 fed directly to the stamping station 34 and for the hot stamping foil 16 fed to the stamping station 34 via the displacement device 50 are designed as braked feed rollers and are operatively connected to the control device 58, which is indicated by the arrows 74 in FIG. 3. With the help of the braked feed rollers 44 and 52, the hot stamping foil 16 is stretched in a defined manner with respect to the stamping station 34, so that the distance between the stamping foil impressions 18, 20, which is originally smaller than the useful pitch Nt (see FIG. 2), is exactly compensated.
  • the embossing roller 36 which has a length corresponding to the width of the substrate, is formed with embossing die segments 76 which are equidistantly spaced apart from one another in the circumferential direction of the embossing roller 36.
  • the distance between adjacent die stamp segments 76 corresponds exactly to the benefit pitch Nt of the benefits 12 of the flexible substrate 10 lying in a row one behind the other (see FIG. 2).
  • the individual die segments 76 are thermally insulated from one another.
  • Each embossing die segment 76 is expediently designed with a heating device 80, which is, for. B. to known cartridge heaters can act.
  • the stamping die segments 76 with their heating devices 80 and the cooling channels 78 can be exchanged on a central body 82 and are consequently arranged in a manner that is easy to repair.
  • FIG. 6 the device 28 is drawn in sections, in order to clarify in particular the details with which this device 28 differs from the device 28 shown schematically in FIG. 3.
  • the device 28 indicated in FIG. 6 is a so-called sheet-fed machine, the substrates, which in this case are, for example, paper cut into sheets, are fed from a feeder 88 to a printing cylinder 92 by means of a sheet accelerating device 90, that runs at machine speed.
  • an energy-activated primer or the complementary component of a multi-component adhesive is printed on the sheet-shaped substrates in register using an impression unit, for example based on a flexographic printing unit.
  • the substrates prepared in this way are then transferred to a transfer drum 94, on which the, for example, radiation-activatable primer is activated by means of a radiation device 96.
  • Radiation device 96 is, for example, an ultraviolet radiation source. Downstream of the transfer drum 94, the sheet substrates are introduced into the station 34. With the reference number 50 is also In this drawing figure, the offset device denotes, reference being made to the configuration according to FIG. 3 with regard to the offset device 50 and the other structural parts of the device 28.
  • the invention can be used in the same way if the impressions on the support are individual impressions or if areas of an individual impression or benefit are to be transferred from a large-area coating of the support.

Landscapes

  • Labeling Devices (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Electronic Switches (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Printing Methods (AREA)

Abstract

Described are a process and an apparatus for transferring prints (18, 20) from a support (16) on to a substrate (10), wherein the support (16) is transported together with the substrate (10) through a station in which the substrate (10) having print portions (12) in succession in the direction of transportation movement is provided with the prints (18, 20) in accurate register relationship. This procedure uses on the one hand a substrate (10) having at least two rows of print portions (112) side-by-side transversely to the direction of transportation movement and on the other hand a support (16) which in the direction of transportation movement has between the prints (18) for print portions (12) disposed in a row one after the other in the direction of transportation movement at least one respective additional print (20). According to the invention there are provided means, by means of which only certain prints (18, 20) can be respectively transferred selectively fron the support (16) on to the substrate (10) in the station. After leaving the station the support (16) is released frmm the substrate (10) and according to the number of additional prints (18) provided between two prints (18) for print portions (12) occurring in succession in the direction of transportation movement, fed at least one further time to the station, in which case the support (16) is displaced laterally by the transverse spacing between the adjacent rows of print portions and in the direction of transportation movement approximately by the spacing between directly successive prints (18, 20).

Description

Verfahren und Vorrichtung zum Übertragen von Abdrucken von einem Träger auf ein SubstratMethod and device for transferring impressions from a support to a substrate
Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruchs 1 zum Übertragen von Abdrucken von einem Träger auf ein Substrat und eine Vorrichtung zurThe invention relates to a method according to the preamble of claim 1 for transferring impressions from a support to a substrate and a device for
Durchführung des Verfahrens gemäß dem Oberbegriff des Anspruchs 17.Implementation of the method according to the preamble of claim 17.
Ein Verfahren zum Übertragen eines Prägefolien-Abdruckes von einer Prägefolie auf ein Substrat und eine Vorrichtung zur Durchführung dieses Verfahrens ist aus der DE 32 10 551 C2 bekannt. Dieses Verfahren bzw. diese Vorrichtung sind dazu geeignet, ein Substrat in Form einer flexiblen Materialbahn in seiner Vorschubrichtung quasi endlos mit einem Abdruck zu beprägen. Bei dem besagten Substrat kann es sich beipielsweise um einen Magnetstreifen auf einem Ticket oder um einen dekorativen Endlosstreifen handeln, der einen entsprechenden Nutzen, d.h. ein Ticket o.dgl. in Transportrichtung des Substrates vom einen Rand des entsprechenden Nutzens bis zum gegenüberliegenden Rand desselben bedeckt.A method for transferring an embossing foil impression from an embossing foil to a substrate and a device for carrying out this method are known from DE 32 10 551 C2. This method and this device are suitable for stamping a substrate in the form of a flexible material web in an almost endless manner in its feed direction. Said substrate can be, for example, a magnetic stripe on a ticket or a decorative endless stripe which has a corresponding use, i.e. a ticket or the like covered in the transport direction of the substrate from one edge of the corresponding panel to the opposite edge thereof.
Sollen mit diesem bekannten Verfahren bzw. mit der hierfür vorgesehenen Vorrichtung einzelne Abdrucke auf ein aufeinanderfolgend Nutzen aufweisendes Substrat passergenau aufgeprägt werden, so entspricht der Abstand zwischen benachbarten Abdrucken in Transportrichtung der Heißprägefolie genau dem Nutzenabstand in der zur Transportrichtung der Heißprägefolie parallelen Transportrichtung des Substrates. Durch diesen Abstand zwischen den Prägefolienabdrucken ergibt sich zwischen diesen ein nicht unerheblicher ungenutzter Leerraum, d.h. Prägefolienabfall, was sich auf die Wirtschaftlichkeit dieses bekannten Verfahrens und der hierfür vorgesehenen Vorrichtung beim Prägen von Einzelbildern auswirkt.With this known method or with the device provided for this purpose, individual impressions on a substrate having successive uses should be register-accurate are stamped, the distance between adjacent impressions in the transport direction of the hot stamping foil corresponds exactly to the useful distance in the transport direction of the substrate parallel to the transport direction of the hot stamping foil. This distance between the embossing foil impressions results in a not inconsiderable unused empty space, ie embossing foil waste, which has an effect on the economy of this known method and the device provided for it when embossing individual images.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art zu schaffen, wobei es wirtschaftlich möglich ist, ein aufeinanderfolgend Nutzen aufweisendes Substrat passergenau mit einzelnen voneinander beabstandeten Abdrucken zu versehen, wobei der Abfall an Trägermaterial relativ gering ist.The invention has for its object to provide a method and a device of the type mentioned, wherein it is economically possible to provide a sequentially useful substrate with individual spaced-apart impressions, the waste of carrier material is relatively low.
Diese Aufgabe wird verfahrensgemäß durch die Merkmale des kennzeichnenden Teiles des Anspruchs 1 gelöst. Bevorzugte Weiterbildungen des erfindungsgemäßen Verfahrens sind in den Ansprüchen 2 bis 16 gekennzeichnet.This object is achieved according to the method by the features of the characterizing part of claim 1. Preferred developments of the method according to the invention are characterized in claims 2 to 16.
Durch die erfindungsgemäße Verfahrensweise ist es möglich, • rotativ und damit kontinuierlich ein quasi endlosesThe procedure according to the invention makes it possible to • Rotatively and thus continuously an almost endless
Substrat mit mindenstens zwei Nutzenreihen passergenau mit entsprechenden einzelnen, d.h. Einzelbilder darstellenden Abdrucken zu versehen, wobei der mit den Abdrucken versehene Träger gut ausgenutzt wird, weil auf dem Träger zwischen den Abdrucken für die Nutzen einer Nutzenreihe weitere Abdrucke für mindestens eine weitere Nutzenreihe vorgesehen sind. Der Abfall ist erfindungsgemäß also relativ gering. Ein weiterer Vorteil gegenüber diskontinuierlich bzw. oszillierend arbeitenden Verfahren zum Anbringen von Einzelbild-Abdrucken auf den entsprechenden Nutzen von Substraten besteht in der vergleichsweise großen Produktivität. Bekannte oszillierende Prägeverfahren zum Prägen von Substraten in Form von Bögen mit Mehrfachnutzen erreichen beispielsweise Leistungen von ca. 4000 bis 6000 Bogen pro Stunde. Im Vergleich hierzu sind bei einem rotativen Prägeverfahren entsprechend der eingangs erwähnten DE 32 10 551 C2 Vorschubgeschwindigkeiten von größenordnungsmäßig 130 bis 200 m/min realisierbar, was umgerechnet ca. 12000 bis 18000 Bogen pro Stunde entspricht, die beprägt werden können. Das erfindungsgemäße Verfahren macht sich das zuletzt genannte rotative Verfahren mittels einer Prägefolie oder mittels eines Trägers zunutze, der registerhaltig mit einem aktivierbaren Kleber versehen ist. Es ist also möglich, daß der Träger und die Abdrucke von einer Prägefolie gebildet werden. Bei einem solchen Verfahren ist es vorteilhaft, wenn der Träger und die Abdrucke von einer Heißprägefolie gebildet werden. Hierbei kann der Träger mehrfach durch eine das Mittel zur selektiven Übertragung bestimmterTo provide substrate with at least two rows of prints in register with corresponding individual prints, that is to say still images, the carrier provided with the prints being well used because additional prints for at least one further row of prints are provided on the carrier between the prints for the benefits of one row of benefits. According to the invention, the waste is therefore relatively small. Another advantage over discontinuous or oscillating processes The comparatively high level of productivity for applying single image impressions to the corresponding use of substrates consists of Known oscillating embossing processes for embossing substrates in the form of sheets with multiple uses, for example, achieve outputs of approximately 4000 to 6000 sheets per hour. In comparison, feed speeds of the order of 130 to 200 m / min can be realized in a rotary embossing method in accordance with DE 32 10 551 C2 mentioned at the outset, which corresponds to the equivalent of approximately 12,000 to 18,000 sheets per hour which can be embossed. The method according to the invention makes use of the last-mentioned rotary method by means of an embossing film or by means of a carrier which is provided with an activatable adhesive in register. It is therefore possible for the carrier and the impressions to be formed by an embossing film. In such a method it is advantageous if the carrier and the impressions are formed by a hot stamping foil. In this case, the carrier can be determined several times by a means for selective transmission
Abdrucke vom Träger auf das Substrat bildende, segmentierte beheizte Prägewalze und mindestens eine an deren Mantelfläche anliegende Andruckrolle aufweisende Station transportiert werden. Dieses Verfahren macht eine segmentierte Prägewalze erforderlich, um tatsächlich nur die jeweils richtigen Abdrucke vom Träger auf das Substrat zu übertragen, während die zwischen diesen befindlichen Abdrucke erst nach der seitlichen Versetzung und der erneuten Zuführung des Trägers zur Station auf das entsprechende Substrat übertragen werden.Imprints from the carrier on the substrate forming, segmented heated embossing roller and at least one station having a pressure roller resting on the lateral surface thereof are transported. This process requires a segmented embossing roller in order to actually only transfer the correct impressions from the carrier to the substrate, while the impressions located between these are only transferred to the corresponding substrate after the lateral displacement and the renewed feeding of the carrier to the station.
Eine sehr exakte, d.h. passergenaue Übertragung von Abdrucken von einem Träger auf ein Substrat ergibt sich, wenn bei der Durchführung des erfindungsgemäßen Verfahrens eine Heißprägefolie verwendet wird, bei welcher der Abstand der Prägefolien-Abdrucke in Transportrichtung kürzer ist als der Abstand der Prägestempelsegmente an der Mantelfläche der Prägewalze, und wenn die Heißprägefolie stromaufwärts vor der Prägestation derartig gedehnt wird, daß der Abstand der Prägefolienabdrucke der/jeder Abdruckreihe dem Abstand der Prägestempelsegmente entspricht. Dadurch ist nämlich eine genau definierte, exakte Zuordnung der Prägefolien-Abdrucke zu den zugehörigen Nutzen des zu beprägenden Substrates auch bei großen Winkelgeschwindigkeiten der Prägewalze realisierbar.A very exact, ie, registration-accurate transfer of prints from a support to a substrate is obtained when the method according to the invention is carried out a hot stamping foil is used in which the distance of the stamping foil impressions in the transport direction is shorter than the distance of the stamping stamp segments on the lateral surface of the stamping roller, and if the hot stamping foil is stretched upstream in front of the stamping station in such a way that the spacing of the stamping foil impressions of the / each impression row corresponds to that Distance of the die segments corresponds. This enables a precisely defined, exact assignment of the stamping foil impressions to the associated benefits of the substrate to be stamped, even at high angular speeds of the stamping roller.
Demselben Zweck ist es dienlich, wenn bei Verwendung einer segmentierten Prägewalze die Drehwinkelposition der Prägewalze bzw. ihrer Prägestempelsegmente und eine vorgegebene Kennung des Substrates bzw. jedes Nutzens des Substrates mittels einer Regelungseinrichtung aneinander angepaßt werden. Bei der zuletzt genannten Regelungseinrichtung handelt es sich zweckmäßigerweise um eine sogenannte Insetterregelung. Bei der Kennung desIt serves the same purpose if, when using a segmented embossing roller, the angle of rotation position of the embossing roller or its embossing die segments and a predetermined identifier of the substrate or each use of the substrate are matched to one another by means of a control device. The last-mentioned control device is expediently a so-called insetter control. With the identification of the
Substrates bzw. jedes Nutzens des Substrates kann es sich um entsprechende Druckmarken handeln, die mittels einer Druckmarken-Leseeinrichtung erfaßt und der Regelungseinrichtung als Regelgrößen zugeführt werden. Mögliche Seitentoleranzen des Trägers mit den Abdrucken bzw. der Heißprägefolie in bezug auf das Substrat können durch an sich bekannte Maßnahmen wie Führungsrollen ausgeglichen werden, wobei auch eine Unterstützung durch Luftpolsterung o.dgl. zweckmäßig sein kann.Substrate or each use of the substrate can be corresponding print marks, which are detected by means of a print mark reading device and fed to the control device as control variables. Possible side tolerances of the carrier with the imprints or the hot stamping foil with respect to the substrate can be compensated for by measures known per se, such as guide rollers, with support by air cushioning or the like. can be useful.
Als vorteilhaft hat es sich erwiesen, wenn bei der Durchführung des zuletzt erwähnten Verfahrens die Vorschubposition der Prägefolie bzw. ihrer Abdrucke bestimmt und mittels der erwähnten Regelungseinrichtung an die Drehwinkelposition der Prägestation bzw. ihrer Prägestempelsegmente angepaßt wird. Das kann durch die oben erwähnte Druckmarken-Leseeinrichtung geschehen, die mit der Regelungseinrichtung verbunden ist, um z. B. einen Stellantrieb mit einem Überlagerungsgetriebe entsprechend zu beeinflussen, mit dem die Prägewalze und/oder die Vorschubrollen für das Substrat bzw. die Prägefolie angetrieben werden.It has proven to be advantageous if, when carrying out the last-mentioned method, the feed position of the stamping film or its impressions is determined and by means of the control device mentioned the rotational angle position of the embossing station or its embossing die segments is adapted. This can be done by the above-mentioned print mark reading device, which is connected to the control device in order, for. B. to influence an actuator with a superposition gear accordingly, with which the embossing roller and / or the feed rollers for the substrate or the embossing film are driven.
Kommt beim erfindungsgemäßen Verfahren eine Heißprägefolie zur Anwendung, so ist es zweckmäßig, diese nach dem Verlassen der Prägestation zum Ablösen vom entsprechenden beprägten Substrat abzukühlen und anschließend mindestens ein weiteres Mal der Prägestation - um den Abstand benachbarter Nutzenreihen versetzt - zuzuführen. Durch eine solche Abkühlung kann die Prägegeschwindigkeit entsprechend erhöht werden, was sich auf die Produktivität des erfindungsgemäßen Verfahrens vorteilhaft auswirkt.If a hot stamping foil is used in the method according to the invention, it is expedient to cool it after leaving the stamping station to detach it from the corresponding stamped substrate and then to feed it to the stamping station at least one more time - offset by the distance between adjacent rows of benefits. Such a cooling can increase the embossing speed accordingly, which has an advantageous effect on the productivity of the method according to the invention.
Als zweckmäßig hat es sich erwiesen, wenn die Prägefolie nach dem Verlassen der Prägestation aus der Folienebene heraus um 90 Winkelgrad verschwenkt um ein Paar zur Prägewalze senkrecht orientierte Versetzrollen umgelenkt, hierbei quer zur Transportrichtung um den Abstand • benachbarter Nutzenreihen versetzt und anschließend um eine entsprechende Nutzenreihe quer versetzt wieder der Prägestation zugeführt wird, so daß in der Prägestation simultan mindestens zwei Nutzenreihen mit Abdrucken beprägt werden. Die Versetzrollen sind hierbei zweckmäßigerweise derartig vorgesehen, daß sie zur Ausführung entsprechender Verstellbewegungen in Anpassung an die jeweiligen Gegebenheiten von zu beprägenden Substraten und Träger mit Abdrucken geeignet sind. Beim erfindungsgemäßen Verfahren kann das Substrat den Abdrucken entsprechend jedoch auch registerhaltig mit einem das Mittel zur selektiven Übertragung bestimmter Abdrucke auf das Substrat bildenden aktivierbaren Kleber versehen werden, der anschließend vor der Zuführung des Substrats zur Station aktiviert wird. Dabei kann als aktivierbarer Kleber ein energieaktivierbarer Primer oder ein Mehrkomponentenkleber, dessen Komplementärkomponente den Abdrucken entsprechend registerhaltig auf das Substrat aufgebracht wird, verwendet werden. Der besagte Primer kann entsprechend seiner Zusammensetzung beispielsweise durch Ultraviolett- oder Elektronenstrahlung o.dgl. aktiviert werden. Bei dem gegebenenfalls zur Anwendung gelangenden Mehrkomponentenkleber kann es sich um einen Zweikomponentenkleber handeln. Wenn das beim erfindungsgemäßen Verfahren zur Anwendung gelangende Mittel zur selektiven Übertragung bestimmter Abdrucke auf das Substrat von einem aktivierbaren Kleber der oben beschriebenen Art gebildet wird, ergibt sich der weitere Vorteil, das zum Übertragen von Abdrucken vom Träger auf das Substrat keine segmentierte Walze erforderlich ist, sondern eine vergleichsweise einfach ausgebildete Walze ohne Walzensegmente angewandt werden kann, weil in diesem Fall die geeignete Aktivierung gezielt z.B. durch Bestrahlung oder durch die mit der Komplementärkomponente zusammenwirkende Kleberkomponente des Mehrkomponentenklebers erfolgt.It has proven to be expedient if, after leaving the embossing station, the embossing film is pivoted out of the plane of the film by 90 angular degrees and deflected by a pair of displacement rollers oriented perpendicular to the embossing roller, offset transversely to the transport direction by the distance • of adjacent rows of benefits and then by a corresponding row of benefits transversely offset is fed back to the embossing station so that at least two rows of prints are imprinted simultaneously in the embossing station. The displacement rollers are expediently provided in such a way that they are suitable for carrying out corresponding adjustment movements in adaptation to the particular circumstances of the substrates and supports to be imprinted. In the method according to the invention, however, the substrate can also be provided in register with an activatable adhesive which forms the means for the selective transfer of certain impressions to the substrate and which is subsequently activated before the substrate is fed to the station. In this case, an energy-activatable primer or a multicomponent glue, the complementary component of which, according to the impressions, is applied to the substrate in register form, can be used as the activatable glue. The said primer can, for example, by its composition by ultraviolet or electron radiation or the like. to be activated. The multi-component adhesive that may be used can be a two-component adhesive. If the agent used in the method according to the invention for the selective transfer of certain impressions to the substrate is formed by an activatable adhesive of the type described above, there is the further advantage that no segmented roller is required to transfer impressions from the support to the substrate. but a comparatively simple roller without roller segments can be used, because in this case the appropriate activation takes place in a targeted manner, for example by irradiation or by the adhesive component of the multicomponent adhesive which interacts with the complementary component.
Zweckmäßigerweise wird zur Durchführung des erfindungsgemäßen Verfahrens ein Träger verwendet, bei dem die Abdrucke in einer Reihe hintereinander äquidistant beabstandet sind, weil in diesem Fall der Regelungsaufwand zur Durchführung des Verfahrens relativ gering ist. Erfindungsgemäß kann in der Station - wie bereits erwähnt worden ist - eine Prägewalze verwendet werden, deren Prägestempelsegmente in Umfangsrichtung voneinander einen Abstand besitzen, der an den in Transportrichtung gegebenen Abstand hintereinander befindlicher Nutzen jeder Nutzenreihe angepaßt ist.A carrier is expediently used to carry out the method according to the invention, in which the prints are equidistantly spaced in a row one behind the other, because in this case the regulatory effort for carrying out the method is relatively small. According to the invention - as has already been mentioned - an embossing roller can be used in the station, the embossing stamp segments of which are spaced apart from one another in the circumferential direction and which are adapted to the benefit of each row of benefits located one behind the other in the transport direction.
Beim erfindungsgemäßen Verfahren kann ein auf eine Rolle aufgewickelter Substratstreifen verwendet werden; es ist jedoch auch möglich, erfindungsgemäß blattartige Substrate zu verwenden, die aneinander anschließend der Prägestation zugeführt werden. Im zuletzt genannten Fall kann folglich darauf verzichtet werden, die Substratbahn nach dem Prägevorgang zu einzelnen Bögen auseinanderzuschneiden, was sich auf die Produktivität des Verfahrens gegebenenfalls positiv auswirken kann.In the method according to the invention, a substrate strip wound on a roll can be used; however, it is also possible to use sheet-like substrates according to the invention, which are subsequently fed to the embossing station. In the latter case, it is consequently possible to dispense with cutting the substrate web into individual sheets after the embossing process, which may have a positive effect on the productivity of the method.
Die der Erfindung zugrunde liegende Aufgabe wird vorrichtungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 17 gelöst. Bevorzugte Aus- bzw. Weiterbildungen der erfindungsgemäßen Vorrichtung sind in den Ansprüchen 18 bis 30 gekennzeichnet.The object underlying the invention is achieved according to the device by the characterizing features of claim 17. Preferred embodiments of the device according to the invention are characterized in claims 18 to 30.
Bei der erfindungsgemäßen Vorrichtung kann eine Vorratseinrichtung zur Anwendung gelangen, welche eine Rolle für ein streifenförmiges, quasi endloses Substrat aufweist. Es ist jedoch auch möglich, daß die Vorratseinrichtung ein Behältnis für einen Stapel blattartiger Substrate und eine Einrichtung zur lückenlosen kontinuierlichen Zuführung der einzelnen Substratblätter zur Station aufweist.In the device according to the invention, a storage device can be used which has a roll for a strip-like, quasi-endless substrate. However, it is also possible that the storage device has a container for a stack of sheet-like substrates and a device for the continuous feeding of the individual substrate sheets to the station.
Bei der besagten Station kann es sich um eine Prägestation mit einer Prägewalze handeln, die an ihrer Mantelfläche mit die nebeneinander vorgesehenen Nutzen simultan beprägenden Prägestempelsegmenten versehen ist, die in Umfangsrichtung der Prägewalze voneinander beabstandet sind, wobei der Abstand zwischen benachbarten PrägestempelSegmenten an den in Transportrichtung gegebenen Abstand hintereinander befindlicher Nutzen jeder Nutzenreihe angepaßt ist. Eine andere Möglichkeit besteht darin, daß zwischen der Station und der Vorratseinrichtung eine zum registerhaltigen selektiven Aufbringen eines aktivierbaren Klebers auf das Substrat dienende Einrichtung vorgesehen ist. Bei dieser Einrichtung kann es sich um ein Druckwerk zum Aufbringen des Klebers auf das Substrat handeln. Derartige Druckwerke sind beispielsweise als Eindruckwerke auf der Basis eines Flexodruckwerks bekannt. Es ist jedoch auch möglich, das besagte Druckwerk als Tiefdruck-, Offset- oderThe station in question can be an embossing station with an embossing roller, which is attached to its outer surface the side-by-side benefits are provided simultaneously with embossing die segments that are spaced apart in the circumferential direction of the embossing roller, the distance between adjacent die segments being adapted to the benefits of each row of rows located one behind the other in the direction of transport. Another possibility is that a device is provided between the station and the storage device for selectively applying an activatable adhesive to the substrate. This device can be a printing unit for applying the adhesive to the substrate. Printing units of this type are known, for example, as impression units based on a flexographic printing unit. However, it is also possible to use the said printing unit as a gravure, offset or
Siebdruckwerk auszubilden. Bei der Vorrichtung der zuletzt genannten Art kann die Einrichtung zur Aktivierung des von einem Primer gebildeten Klebers ein Bestrahlungsgerät aufweisen. Mit Hilfe dieses Bestrahlungsgerätes ist es in Abhängigkeit von dem zur Anwendung gelangenden Primer möglich, eine Ultraviolettstrahlung, eineTrain screen printing unit. In the device of the last-mentioned type, the device for activating the adhesive formed by a primer can have an irradiation device. With the help of this radiation device it is possible, depending on the primer used, an ultraviolet radiation, a
Elektronenstrahlung oder eine geeignete andere Strahlung zu erzeugen, um den Primer passend zu aktivieren.To generate electron radiation or a suitable other radiation to activate the primer appropriately.
Vorteilhaft ist es, wenn bei einer Ausbildung der erfindungsgemäßen Vorrichtung mit einerIt is advantageous if, when the device according to the invention is designed with a
Prägestempelsegmente aufweisenden Prägewalze die am Träger vorgesehenen Abdrucke der/jeder Abdruck-Reihe voneinander einen Abstand aufweisen, der geringfügig kleiner ist als der Abstand der Prägestempelsegmente an der Mantelfläche der Prägewalze, und wenn stromaufwärts vor der Prägestation mindestens zwei gebremste Vorschubrollen vorgesehen sind, an welchen der von einer Prägefolie gebildete Träger umgelenkt und in bezug auf die Prägestation derartig gedehnt wird, daß der Abstand der Abdrucke der/jeder Abdruckreihe genau dem Abstand der Prägestempelsegmente entspricht. Mit einer derartigen Vorrichtung ist bei vergleichsweise großen Taktzahlen, d.h. bei einer relativ großen Produktivität, ein passergenaues Übertragen derEmbossing stamp segments having embossing roller, the imprints of the / each imprint row provided on the carrier have a distance which is slightly smaller than the spacing of the embossing stamp segments on the lateral surface of the embossing roller, and if at least two braked feed rollers are provided upstream of the embossing station, on which the Carrier formed by an embossing foil and deflected in relation to the embossing station it is stretched that the distance between the impressions of the / each row of impressions corresponds exactly to the distance between the die segments. With a device of this type, register-accurate transmission of the is possible with comparatively large cycle numbers, ie with relatively high productivity
Abdrucke vom Träger auf das Substrat möglich. Dem selben Zweck ist es dienlich, wenn bei einer solchen Vorrichtung der zuletzt genannten Art zur Anpassung der Drehwinkelposition der Prägewalze bzw. ihrer Prägestempelsegmente an eine vorgegebene Kennung des Substrates bzw. jedes Nutzens desselben eine Regelungseinrichtung vorgesehen ist. Diese Regelungseinrichtung ist zweckmäßigerweise eingangsseitig mit mindestens einer Leseeinrichtung und ausgangsseitig mit einem Stellantrieb für die Prägewalze und/oder für die Vorschubrollen des Substrates und/oder der Prägefolie verbunden. Bei der besagten mindestens einen Leseeinrichtung kann es sich um einen handelsüblichen Druckmarkenleser und beim Stellantrieb kann es sich um einen bekannten mit einem Überlagerungsgetriebe ausgebildeten Antrieb handeln.Imprints from the carrier on the substrate possible. The same purpose is useful if a control device is provided in such a device of the last-mentioned type for adapting the rotational angle position of the embossing roller or its embossing die segments to a predetermined identifier of the substrate or each use thereof. This control device is expediently connected on the input side to at least one reading device and on the output side to an actuator for the embossing roller and / or for the feed rollers of the substrate and / or the embossing film. Said at least one reading device can be a commercially available print mark reader, and the actuator can be a known drive designed with a superposition gear.
Vorteilhaft ist es, wenn zwischen den Vorschubrollen und der Prägestation mindestens eine zur Prägefolie zugeordnete zweite Leseeinrichtung vorgesehen ist, die mit der genannten Regelungseinrichtung verbunden ist. Mit Hilfe dieser zweiten Leseeinrichtung können die Markierungen der Prägefolie erfaßt und die den erfaßten Markierungen entsprechenden Signale der Regelungseinrichtung zugeführt werden, um eine genaue Zuordnung zwischen dem Träger mit den Abdrucken bzw. der Prägefolie und der Prägewalze bzw. deren Prägestempelsegmenten zu bewirken. Als zweckmäßig hat es sich erwiesen, wenn die Versetzeinrichtung mindestens ein Paar Versetzrollen aufweist, die zueinander parallel in Tansportrichtung und quer dazu gegeneinander versetzt sind, wobei die Querversetzung der Versetzrollen des/jedes Versetzrollen- Paares dem Querabstand benachbarter Nutzenreihen des Substrates entspricht. Durch eine solche Ausbildung der Versetzeinrichtung ist es möglich, den Träger mit den Abdrucken bzw. die Prägefolie wenigstens einmal in bezug auf die zum Übertragen der entsprechenden Abdrucke vomIt is advantageous if at least one second reading device assigned to the stamping film is provided between the feed rollers and the stamping station and is connected to said control device. With the aid of this second reading device, the markings of the embossing film can be detected and the signals corresponding to the detected markings can be fed to the control device in order to achieve an exact association between the carrier with the imprints or the embossing film and the embossing roller or its stamping stamp segments. It has proven to be expedient if the displacement device has at least one pair of displacement rollers which are mutually offset parallel to one another in the transport direction and transversely thereto, the transverse displacement of the displacement rollers of the / each displacement roller pair corresponding to the transverse spacing of adjacent rows of benefits of the substrate. With such a design of the transfer device, it is possible to transfer the carrier with the imprints or the embossing foil at least once in relation to those for transferring the corresponding imprints from
Träger auf das Substrat bzw. in bezug auf die Prägestation schleifenartig und quasi verwölbungs- bzw. verzugsfrei umzulenken und der Station mindestens ein zweites Mal zuzuführen, um wenigstens zwei Nutzenreihen des durch die Prägestation durchtransportierten Substrates gleichzeitig passergenau mit Abdrucken zu versehen bzw. zu beprägen.To redirect the carrier onto the substrate or with respect to the embossing station in a loop-like manner and without warping or warping and to feed it to the station at least a second time in order to provide or impress at least two rows of benefits of the substrate transported through the embossing station with precise registers.
Eine gute Anpassung an die jeweiligen Gegebenheiten eines Substrates wie bspw. seiner Abmessungen ist möglich, wenn mindestens eine Versetzrolle des/jedes Versetzrollen-Paares in Transportrichtung und/oder quer zur Transportrichtung verstellbar ist. Insbesondere durch die Verstellbarkeit des/jedes Versetzrollen-Paares quer zur Transportrichtung des Substrates und folglich des mit Abdrucken versehenen Trägers bzw. der Prägefolie, ist es möglich, die erfindungsgemäße Vorrichtung an beliebige Substrate mit mehr als einer Nutzenreihe exakt anzupassen.A good adaptation to the particular circumstances of a substrate, such as its dimensions, is possible if at least one displacement roller of the / each displacement roller pair is adjustable in the transport direction and / or transversely to the transport direction. In particular, due to the adjustability of the / each pair of displacement rollers transversely to the transport direction of the substrate and consequently of the carrier or the stamping foil provided with imprints, it is possible to adapt the device according to the invention exactly to any substrates with more than one row of benefits.
Bei der erfindungsgemäßen Vorrichtung kann jedes Prägestempelsegment der Prägewalze mit einer Heizeinrichtung ausgebildet sein. Bei dieser Heizeinrichtung kann es sich beispielsweise um eine elektrische Widerstandsheizung handeln. Eine solche Vorrichtung kommt in Verbindung mit einer Heißprägefolie zur Anwendung.In the device according to the invention, each stamping segment of the stamping roller can be formed with a heating device. This heating device can be, for example act electrical resistance heating. Such a device is used in connection with a hot stamping foil.
Weitere Einzelheiten, Merkmale und Vorteile ergeben sich aus der nachfolgenden Beschreibung von in der Zeichnung dargestellten Ausführungsbeispielen der erfindungsgemäßen Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens. Es zeigen:Further details, features and advantages result from the following description of exemplary embodiments of the device according to the invention for carrying out the method according to the invention shown in the drawing. Show it:
Figur 1 eine Ansicht eines Abschnittes eines passergenau mit Abdrucken eines Trägers zu versehenden Substrates in Blickrichtung von oben.Figure 1 is a view of a portion of a substrate to be accurately printed with a substrate in the direction of view from above.
Figur 2 einen der Figur 1 entsprechenden Anschnitt eines Substrates gemeinsam mit einem Abschnitt eines Abdrucke aufweisenden Trägers in Form einer Prägefolien-Abdrucke aufweisenden Heißprägefolie in Blickrichtung von oben,FIG. 2 shows a section of a substrate corresponding to FIG. 1 together with a section of a carrier having impressions in the form of a hot stamping film having embossing foil impressions in the viewing direction from above,
Figur 3 eine Seitenansicht der Vorrichtung zumFigure 3 is a side view of the device for
Anbringen von einzelnen Abdrucken auf einem flexiblen Substrat,Making individual impressions on a flexible substrate,
Figur 4 eine Ansicht der Vorrichtung gemäß Figur 3 in Blickrichtung von oben, wobei nur die wesentlichsten Einzelheiten insbes. zur Verdeutlichung der Versetzeinrichtung gezeichnet sind. Figur 5 einen Schnitt durch eine abschnittweise gezeichnete segmentierte Prägewalze, wie sie bei der Vorrichtung gemäß den Figuren 3 und 4 zur Anwendung gelangt, undFIG. 4 shows a view of the device according to FIG. 3 in the direction of view from above, only the most essential details being drawn, in particular to clarify the displacement device. 5 shows a section through a segmented embossing roller drawn in sections, as used in the device according to FIGS. 3 and 4, and
Fig. 6 eine der Fig. 3 ähnliche Darstellung einer zweiten Ausführungsform der Vorrichtung zum Übertragen von Abdrucken von einem Träger auf ein Substrat.6 shows a representation similar to FIG. 3 of a second embodiment of the device for transferring impressions from a carrier to a substrate.
Figur 1 zeigt einen Abschnitt eines flexiblen Substrates 10, das nebeneinander zwei Reihen von Nutzen 12 aufweist. Jeder Nutzen 12, bei dem es sich beispielsweise um ein Blatt Geschäftsbriefpapier, um eine Banknote o.dgl. handeln kann, ist an einem genau definierten Flächenabschnitt 14 mit einem Abdruck zu versehen, bei dem es sich z.B. um einen Prägefolien-Abdruck handelt. Erfindungsgemäß geschieht dies z.B. mit Hilfe einer Heißprägefolie 16 (siehe Figur 2) in einer Vorrichtung, wie sie in denFIG. 1 shows a section of a flexible substrate 10 which has two rows of panels 12 next to one another. Each benefit 12, which is, for example, a sheet of business stationery, a banknote or the like. can act, an impression is to be provided on a precisely defined surface section 14, which is e.g. is an embossing foil impression. According to the invention, this happens e.g. with the help of a hot stamping foil 16 (see FIG. 2) in a device such as that shown in FIGS
Figuren 3 und 4 in einer Seitenansicht und in einer Ansicht von oben gezeichnet ist.Figures 3 and 4 is drawn in a side view and in a view from above.
Figur 2 zeigt einen Abschnitt des flexiblen Substrates 10 • mit zwei nebeneinander vorgesehenen Reihen von Nutzen 12. Die Teilung der Nutzen 12 jeder Nutzenreihe ist in Figur 2 mit Nt bezeichnet. Der zu beprägende Flächenabschnitt 14 jedes Nutzens 12 einer Nutzenreihe weist vom in der besagten Nutzenreihe benachbarten Flächenabschnitt 14 einen Abstand A auf, der genau der Nutzenteilung Nt entspricht.FIG. 2 shows a section of the flexible substrate 10 with two rows of panels 12 provided next to one another. The division of the panels 12 of each row of panels is designated by Nt in FIG. The surface section 14 to be embossed on each panel 12 of a row of panels has a distance A from the surface section 14 adjacent in the row of panels in question, which corresponds exactly to the panel pitch Nt.
Der in Figur 2 abschnittweise gezeichnete Träger mit Abdrucken 18, bei dem es sich bspw. um eine Heißprägefolie 16 handelt, weist Abdrucke 18 auf, die in Transportrichtung der Prägefolie 16 voneinander einen Abstand besitzen, welcher in der Station 34 genau dem Abstand A der Flächenabschnitte 14 benachbarter Nutzen 12 der entsprechenden Nutzenreihe und demzufolge in der Station 34 genau der Nutzenteilung Nt entspricht.The carrier with imprints 18, which is drawn in sections in FIG. 2 and which is, for example, a hot stamping foil 16, has imprints 18 in the transport direction of the embossing foil 16 are at a distance from each other which in station 34 corresponds exactly to the distance A between the surface sections 14 of adjacent panels 12 of the corresponding row of panels and consequently in station 34 exactly corresponds to the panel division Nt.
Weist das flexible Substrat 10 zwei Reihen von Nutzen auf, so ist die Prägefolie 16 zwischen den genannten Prägefolienabdrucken 18 jeweils mit einem weiteren Prägefolien-Abdruck 20 ausgebildet. Weist das Substrat 10 drei bzw. n Nutzen-Reihen auf, so ist die Prägefolie 16 zwischen den Prägefolien-Abdrucken 18 mit zwei bzw. (n -1) Prägefolienabdrucken 20 ausgebildet. Alle Prägefolien- Abdrucke 18, 20 der Prägefolie 16 weisen voneinander den gleichen Abstand auf.If the flexible substrate 10 has two rows of benefits, then the embossing film 16 is formed with a further embossing film imprint 20 between the said embossing film impressions 18. If the substrate 10 has three or n rows of sheets, then the embossing foil 16 is formed between the embossing foil impressions 18 with two or (n -1) embossing foil impressions 20. All stamping foil imprints 18, 20 of the stamping foil 16 are at the same distance from one another.
Nach dem Übertragen der Abdrucke 18 auf Nutzen 12 bzw. deren Flächenabschnitte 14 der ersten, d.h. in Figur 2 auf der linken Seite gezeichneten Nutzenreihe wird der Träger bzw. die Prägefolie 16 stromabwärts nach der Prägestation 34 um die Nutzenbreite seitlich versetzt, was in Figur 2 durch den Pfeil 22 angedeutet ist. Die derart versetzte Prägefolie 16 wird in ihrer Transportrichtung, die durch den Pfeil 24 angedeutet ist, um den Abstand der unmittelbar benachbarten Prägefolien-Abdrucke 18, 20 versetzt wiederum der Station 34 zugeführt, so daß nunmehr simultan die unmittelbar nebeneinander befindlichen Nutzenreihen mit den entsprechenden Abdrucken 18 und 20 versehen werden. Die Versetzung der Abdrucke 20 relativ zu den Abdrucken 18 ist in Figur 2 durch den Pfeil 26 angedeutet.After transferring the imprints 18 to panels 12 or their surface sections 14 of the first, i.e. in FIG. 2, the row of blanks drawn on the left-hand side, the carrier or the stamping film 16 is laterally offset downstream of the stamping station 34 by the width of the stack, which is indicated in FIG. 2 by the arrow 22. The embossed foil 16, offset in this way, is again fed to the station 34 in its transport direction, which is indicated by the arrow 24, offset by the distance of the immediately adjacent embossed foil impressions 18, 20, so that the rows of benefits located immediately next to one another with the corresponding impressions are now simultaneously present 18 and 20 are provided. The offset of the imprints 20 relative to the imprints 18 is indicated in FIG. 2 by the arrow 26.
Figur 3 zeigt eine Vorrichtung 28 zum Anbringen von Prägefolien-Abdrucken 18, 20 (siehe Figur 2) einer Heißprägefolie 16 auf einem flexiblen Substrat 10. Das flexible Substrat 10 ist an einer Vorratseinrichtung 30 vorgesehen, bei der es sich um eine Vorratssrolle handelt. Das flexible Substrat 10 wird in an sich bekannter Weise von der Vorratseinrichtung 30, bei der es sich zweckmäßiger Weise um eine gebremste Vorratsrolle handelt, über einen Bahnregler 32 abgezogen und einer Prägestation 34 zugeführt. Die Prägestation 34 weist eine Prägewalze 36 und Andruckrollen 38 auf. Die Andruckrollen 38 sind beispielsweise paarweise an Schwenkarmen 40 angeordnet, deren Funktionsweise in der eingangs erwähnten DE 32 10 551 C2 beschrieben worden ist.FIG. 3 shows a device 28 for applying stamping foil impressions 18, 20 (see FIG. 2) of a hot stamping foil 16 on a flexible substrate 10 flexible substrate 10 is provided on a supply device 30, which is a supply roll. The flexible substrate 10 is drawn off in a manner known per se from the supply device 30, which is expediently a braked supply roll, via a web controller 32 and fed to an embossing station 34. The embossing station 34 has an embossing roller 36 and pressure rollers 38. The pressure rollers 38 are arranged, for example, in pairs on swivel arms 40, the functioning of which has been described in the aforementioned DE 32 10 551 C2.
Die Heißprägefolie 16 ist an einer Vorratsrolle 42 vorgesehen und wird über eine Vorschubrolle 44 der Prägestation 34 zugeführt. In der Prägestation 34 werden die den Nutzen 12 einer Nutzenreihe des flexiblen Substrates 10 entsprechenden Prägefolien-Abdrucke 18 auf die entsprechenden Nutzen 12 der besagten Nutzenreihe ausgeprägt. Anschließend wird die Prägefolie 16 gemeinsam mit dem flexiblen Substrat 10 um eine Kühlwalze 46 umgelenkt und einer Ablöseeinrichtung 48 zugeführt, in welcher die Heißprägefolie 16 vom entsprechenden Abschnitt des Substrates 10 getrennt wird. Die Heißprägefolie 16 wird stromabwärts nach der Ablöseeinrichtung 48 über eine Versetzeinrichtung 50 und über eine zweite Vorschubrolle 52 erneut der Prägestation 34 zugeführt, wobei die Prägefolie 16 in der Versetzeinrichtung 50 in ihrer Querrichtung um eine Nutzenreihe und in ihrer Vorschubrichtung um den Abstand zwischen unmittelbar benachbarten Prägefolien- Abdrucke 18 und 20 versetzt wird, so daß nunmehr in derThe hot stamping foil 16 is provided on a supply roll 42 and is fed to the stamping station 34 via a feed roll 44. In the embossing station 34, the embossing foil impressions 18 corresponding to the benefits 12 of a row of benefits of the flexible substrate 10 are embossed onto the corresponding benefits 12 of the said row of benefits. The embossing film 16 is then deflected together with the flexible substrate 10 around a cooling roller 46 and fed to a detachment device 48 in which the hot embossing film 16 is separated from the corresponding section of the substrate 10. The hot stamping film 16 is fed downstream of the detaching device 48 via a transfer device 50 and via a second feed roller 52 to the stamping station 34, the stamping film 16 in the transfer device 50 in its transverse direction by a row of sheets and in its feed direction by the distance between immediately adjacent stamping films - Imprints 18 and 20 is offset, so that now in the
Prägestation 34 zwei benachbarte Nutzenreihen des flexiblen Substrates 10 simultan mit den entsprechenden Prägefolien- Abdrucken 18, 20 passergenau beprägt werden. Nach dem Ausprägen aller Prägefolien-Abdrucke 18, 20 wird das flexible Substrat 10 stromabwärts nach der Ablöseeinrichtung 48 einer Aufnahmeeinrichtung 54 zugeführt, bei der es sich beispielsweise um eine Aufwickelrolle handelt. Gleichzeitig wird auch die verbrauchte Prägefolie 16 auf eine Aufwickelrolle 56 aufgewickelt.Embossing station 34 two adjacent rows of benefits of the flexible substrate 10 are simultaneously stamped in register with the corresponding embossing foil impressions 18, 20. After all stamping foil impressions 18, 20 have been stamped out, this becomes flexible substrate 10 downstream of the detaching device 48 fed to a receiving device 54, which is, for example, a take-up roll. At the same time, the used embossing foil 16 is also wound onto a winding roller 56.
Die beheizte Prägewalze 36 der Prägestation 34 ist mit einer Regelungseinrichtung 58 versehen, die in Figur 3 durch einen Block schematisch angedeutet ist. DieThe heated embossing roller 36 of the embossing station 34 is provided with a control device 58, which is indicated schematically in FIG. 3 by a block. The
Regelungseinrichtung 58 ist eingangsseitig mit einer dem Substrat 10 zugeordneten Leseeinrichtung 60 und mit zur Heißprägefolie 16 zugeordneten zweiten Leseeinrichtungen 62 verbunden, was in Figur 3 durch die Pfeile 64 und 66 angedeutet ist. In der Zeichnung ist nur eine dieserControl device 58 is connected on the input side to a reading device 60 assigned to substrate 10 and to second reading devices 62 assigned to hot stamping foil 16, which is indicated in FIG. 3 by arrows 64 and 66. Only one of these is shown in the drawing
Leseeinrichtungen 62 sichtbar. Für jeden Foliendurchlauf ist eine eigene Leseeinrichtung 62 vorgesehen. Ausgangsseitig ist die Regelungseinrichtung 58 mit einem Stellantrieb für die Prägewalze 36 und/oder für die Vorschubrollen 44, 52 bzw. 84 verbunden.Readers 62 visible. A separate reading device 62 is provided for each film pass. On the output side, the control device 58 is connected to an actuator for the embossing roller 36 and / or for the feed rollers 44, 52 and 84.
Die der Prägestation 34 nachgeordnete bzw. zur Prägestation 34 nebengeordnete Versetzeinrichtung 50 weist mindestens ein Paar Versetzrollen 68 auf, die zueinander parallel und zur Achse der Prägewalze 36 senkrecht orientiert sind. Die Versetzrollen 68 sind in Transportrichtung der Heißprägefolie 16 gegeneinander versetzt, wie aus den Figuren 3 und 4 ersichtlich ist. Aus Figur 4 ist außerdem ersichtlich, daß die Versetzrollen 68 des/jedes Versetzrollen-Paares auch in Querrichtung, d.h. axialerThe displacement device 50 downstream of the stamping station 34 or adjacent to the stamping station 34 has at least one pair of displacement rollers 68 which are oriented parallel to one another and perpendicular to the axis of the stamping roller 36. The displacement rollers 68 are offset from one another in the transport direction of the hot stamping foil 16, as can be seen from FIGS. 3 and 4. From Figure 4 it can also be seen that the displacement rollers 68 of the / each displacement roller pair also in the transverse direction, i.e. more axial
Richtung der Prägewalze 36 versetzt sind, wobei die besagte Querversetzung der Versetzrollen 68 dem Querabstand benachbarter Nutzenreihen des Substrates 10 entspricht. Mindestens eine Versetzrolle 68 des Versetzrollen-Paares kann in Transportrichtung verstellbar sein, was in Figur 4 durch den Pfeil 70 angedeutet ist. Mindestens eine Versetzrolle 68 ist zweckmäßigerweise quer zur Transportrichtung verstellbar, was in Figur 4 durch die Pfeile 72 angedeutet ist. Aus Figur 4 ist außerdem die Vorratsrolle 42 für die Heißprägefolie 16 sowie die Aufwickelrolle 56 ersichtlich. Desgleichen ist aus Figur 4 die Vorratseinrichtung 30 und die Aufnahmeeinrichtung 54 für das flexible Substrat 10 zu erkennen.Are offset in the direction of the embossing roller 36, the said transverse displacement of the displacement rollers 68 corresponding to the transverse spacing of adjacent rows of benefits of the substrate 10. At least one set roller 68 of the pair of set rollers can be adjustable in the direction of transport, which is indicated in Figure 4 by the arrow 70. At least one displacement roller 68 is expediently adjustable transversely to the transport direction, which is indicated in FIG. 4 by the arrows 72. The supply roll 42 for the hot stamping foil 16 and the take-up roll 56 can also be seen from FIG. Likewise, the storage device 30 and the receiving device 54 for the flexible substrate 10 can be seen from FIG.
Die Vorschubrollen 44 und 52 für die der Prägestation 34 direkt sowie für die der Prägestation 34 über die Versetzeinrichtung 50 zugeführte Heißprägefolie 16 sind als gebremste Vorschubrollen ausgebildet und mit der Regelungseinrichtung 58 wirkverbunden, was durch die Pfeile 74 in Figur 3 angedeutet ist. Mit Hilfe der gebremsten Vorschubrollen 44 und 52 wird die Heißprägefolie 16 in bezug auf die Prägestation 34 definiert gedehnt, so daß der Abstand der Prägefolienabdrucke 18, 20, der ursprünglich kleiner ist als die Nutzenteilung Nt (siehe Figur 2), genau ausgeglichen wird.The feed rollers 44 and 52 for the hot stamping foil 16 fed directly to the stamping station 34 and for the hot stamping foil 16 fed to the stamping station 34 via the displacement device 50 are designed as braked feed rollers and are operatively connected to the control device 58, which is indicated by the arrows 74 in FIG. 3. With the help of the braked feed rollers 44 and 52, the hot stamping foil 16 is stretched in a defined manner with respect to the stamping station 34, so that the distance between the stamping foil impressions 18, 20, which is originally smaller than the useful pitch Nt (see FIG. 2), is exactly compensated.
Wie aus Figur 5 ersichtlich ist, ist die Prägewalze 36, die eine der Breite des Substrates entsprechende Länge aufweist, mit Prägestempelsegmenten 76 ausgebildet, die in Umfangsrichtung der Prägewalze 36 voneinander äquidistant beabstandet sind. Der Abstand zwischen benachbarten Prägestempelsegmenten 76 entspricht genau der Nutzenteilung Nt der in einer Reihe hintereinander liegenden Nutzen 12 des flexiblen Substrates 10 (siehe Figur 2). Die einzelnen Prägestempelsegmente 76 sind voneinander thermisch isoliert. Jedes Prägestempelsegment 76 ist zweckmäßigerweise mit einer Heizeinrichtung 80 ausgebildet, bei der es sich z. B. um an sich bekannte Heizpatronen handeln kann. Die Prägestempelsegmente 76 mit ihren Heizeinrichtungen 80 und den Kühlkanälen 78 sind an einem Zentralkörper 82 auswechselbar und folglich reparaturfreundlich angeordnet.As can be seen from FIG. 5, the embossing roller 36, which has a length corresponding to the width of the substrate, is formed with embossing die segments 76 which are equidistantly spaced apart from one another in the circumferential direction of the embossing roller 36. The distance between adjacent die stamp segments 76 corresponds exactly to the benefit pitch Nt of the benefits 12 of the flexible substrate 10 lying in a row one behind the other (see FIG. 2). The individual die segments 76 are thermally insulated from one another. Each embossing die segment 76 is expediently designed with a heating device 80, which is, for. B. to known cartridge heaters can act. The stamping die segments 76 with their heating devices 80 and the cooling channels 78 can be exchanged on a central body 82 and are consequently arranged in a manner that is easy to repair.
Eine solchermaßen ausgebildete Prägewalze 36 weist einen bestimmten Konstruktionsaufwand auf. Eine einfachere Ausbildung der Station 34 ergibt sich, wenn - wie aus Fig. 6 ersichtlich ist - in der Station 34 eine Walze 86 angewandt wird, die ohne Segmente als einfache Walze ausgebildet ist. In Fig. 6 ist die Vorrichtung 28 abschnittweise aufgeschnitten gezeichnet, um insbes. die Einzelheiten zu verdeutlichen, mit welchen sich diese Vorrichtung 28 von der in Fig. 3 schematisch dargestellten Vorrichtung 28 unterscheidet. Bei der in Fig. 6 angedeuteten Vorrichtung 28 handelt es sich um eine sog. Bogenmaschine, wobei die Substrate, bei denen es sich in diesem Fall beispielsweise um blattförmig zugeschnittenes Papier handelt, von einem Anleger 88 mittels einer Bogenbeschleunigungseinrichtung 90 einem Druckzylinder 92 zugeführt werden, der mit Maschinengeschwindigkeit läuft. Dort wird mittels eines Eindruckwerkes, beispielsweise auf Basis eines Flexodruckwerkes, ein energieaktivierter Primer oder die Komplementärkomponente eines Mehrkomponentenklebers auf die blattförmigen Substrate registerhaltig aufgedruckt. Die solchermaßen präparierten Substrate werden anschließend an eine Transfertrommel 94 übergeben, auf welcher der beispielsweise strahlungsaktivierbare Primer mittels einer Strahlungseinrichtung 96 aktiviert wird. Bei dieserAn embossing roller 36 designed in this way has a certain construction effort. A simpler design of the station 34 results if - as can be seen from FIG. 6 - a roller 86 is used in the station 34, which is designed as a simple roller without segments. In FIG. 6, the device 28 is drawn in sections, in order to clarify in particular the details with which this device 28 differs from the device 28 shown schematically in FIG. 3. The device 28 indicated in FIG. 6 is a so-called sheet-fed machine, the substrates, which in this case are, for example, paper cut into sheets, are fed from a feeder 88 to a printing cylinder 92 by means of a sheet accelerating device 90, that runs at machine speed. There, an energy-activated primer or the complementary component of a multi-component adhesive is printed on the sheet-shaped substrates in register using an impression unit, for example based on a flexographic printing unit. The substrates prepared in this way are then transferred to a transfer drum 94, on which the, for example, radiation-activatable primer is activated by means of a radiation device 96. At this
Strahlungseinrichtung 96 handelt es sich z.B. um eine Ultraviolett-Strahlungsquelle. Stromabwärts nach der Transfertrommel 94 werden die bogenförmigen Substrate in die Station 34 eingeführt. Mit der Bezugsziffer 50 ist auch in diese Zeichnungsfigur die Versetzeinrichtung bezeichnet, wobei bezüglich der Versetzeinrichtung 50 und der übrigen Konstruktionsteile der Vorrichtung 28 auf die Ausbildung gemäß Fig. 3 verwiesen wird.Radiation device 96 is, for example, an ultraviolet radiation source. Downstream of the transfer drum 94, the sheet substrates are introduced into the station 34. With the reference number 50 is also In this drawing figure, the offset device denotes, reference being made to the configuration according to FIG. 3 with regard to the offset device 50 and the other structural parts of the device 28.
Die Erfindung kann in gleicher Weise Verwendung finden, wenn die auf den Träger befindlichen Abdrucke Einzelabdrucke εind oder wenn aus einer großflächigen Beschichtung des Trägers Bereiche eines Einzelabdruckes bzw. Nutzen übertragen werden sollen. The invention can be used in the same way if the impressions on the support are individual impressions or if areas of an individual impression or benefit are to be transferred from a large-area coating of the support.

Claims

A n s p r ü c h e Expectations
1. Verfahren zum Übertragen von Abdrucken (18, 20) von einem Träger (16) auf ein Substrat (10), wobei der Träger (16) gemeinsam mit dem Substrat (10) durch eine Station (34) hindurchtransportiert wird, in der das in Transportrichtung aufeinanderfolgend Nutzen (12) aufweisende Substrat (10) passergenau mit den Abdrucken (18, 20) versehen wird, d a d u r c h g e k e n n z e i c h n e t, daß einerseits ein quer zur Tansportrichtung nebeneinander mindestens zwei Reihen von Nutzen (12) aufweisendes Substrat (10) und andererseits ein Träger (16) verwendet wird, der in Transportrichtung zwischen den Abdrucken (18) für in Transportrichtung in einer Reihe hintereinander vorgesehene Nutzen (12) jeweils mindestens einen zusätzlichen Abdruck (20) aufweist, daß Mittel vorgesehen sind, mittels derer in der Station (34) jeweils selektiv nur bestimmte Abdrucke (18, 20) vom Träger (16) auf das Substrat (10) übertragbar sind, und daß der Träger (16) nach dem Verlassen der Station (34) vom Substrat (10) abgelöst und entsprechend der Anzahl der zwischen zwei Abdrucken (18) für in Transportrichtung aufeinanderfolgende Nutzen (12) vorgesehenen zusätzlichen Abdrucke (18) mindestens ein weiteres Mal der Station (34) zugeführt wird, wobei der Träger (16) hierbei um den Querabstand der benachbarten Nutzenreihen seitlich und etwa um den Abstand zwischen unmittelbar aufeinanderfolgenden Abdrucken (18, 20) in Transportrichtung versetzt wird, so daß in einem Durchgang die nebeneinander vorgesehenen Nutzen (12) jeweils mit einem entsprechenden Abdruck (18, 20) versehen werden.1. A method for transferring impressions (18, 20) from a carrier (16) to a substrate (10), the carrier (16) being transported together with the substrate (10) through a station (34) in which the substrate (10) having successive panels (12) in the direction of transport is provided with the prints (18, 20) in register, characterized in that on the one hand a substrate (10) having at least two rows of panels (12) transversely to the transport direction and on the other hand a carrier (16) is used, which has at least one additional impression (20) in the transport direction between the imprints (18) for uses (12) provided one behind the other in a row in the transport direction, that means are provided by means of which in the station (34) only certain prints (18, 20) are selectively transferable from the carrier (16) to the substrate (10), and that the carrier (16) is released from the substrate (10) after leaving the station (34) t and according to the number of additional prints (18) provided between two prints (18) for successive uses (12) in the direction of transport Time of the station (34) is fed, the carrier (16) being offset laterally by the transverse distance of the adjacent rows of sheets and approximately by the distance between immediately successive impressions (18, 20) in the transport direction, so that the next to each other are provided in one pass Use (12) are each provided with a corresponding impression (18, 20).
2. Verfahren nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß der Träger (16) und die Abdrucke (18, 20) von einer Prägefolie gebildet werden.2. The method of claim 1, d a d u r c h g e k e n n z e i c h n e t that the carrier (16) and the imprints (18, 20) are formed by an embossing foil.
3. Verfahren nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , daß der Träger (16) und die Abdrucke (18, 20) von einer Heißprägefolie gebildet werden.3. The method of claim 2, d a d u r c h g e k e n n z e i c h n e t that the carrier (16) and the imprints (18, 20) are formed by a hot stamping foil.
4. Verfahren nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß der Träger (16) mehrfach durch eine das Mittel zur selektiven Übertragung bestimmter Abdrucke (18, 20) vom Träger (16) auf das Substrat (10) bildende segmentierte beheizte Prägewalze (36) und mindestens eine an deren Mantelfläche anliegende Andruckrolle (38) aufweisende Station (34) transportiert wird.4. The method according to any one of the preceding claims, characterized in that the carrier (16) multiple by a means for selective transfer of certain impressions (18, 20) from the carrier (16) on the substrate (10) forming segmented heated embossing roller (36) and at least one station (34) having a pressure roller (38) bearing against its lateral surface is transported.
5. Verfahren nach Anspruch 3 und 4 , d a d u r c h g e k e n n z e i c h n e t, daß eine Heißprägefolie verwendet wird, bei welcher der Abstand der Prägefolien-Abdrucke (18, 20) in Transportrichtung kürzer ist als der Abstand der Prägestempelsegmente (76) an der Mantelfläche der Prägewalze (36), und daß die Heißprägefolie (16) stromaufwärts vor der Prägestation (34) derartig gedehnt wird, daß der Abstand der Prägefolien- Abdrucke (18 bzw. 20) der/jeder Abdruckreihe genau dem Abstand der Prägestempelsegmente (76) entspricht.5. The method according to claim 3 and 4, characterized in that a hot stamping foil is used, in which the distance of the stamping foil impressions (18, 20) in the transport direction is shorter than the distance of the die segments (76) on the lateral surface of the Embossing roller (36), and that the hot stamping foil (16) upstream of the stamping station (34) is stretched in such a way that the distance between the stamping foil impressions (18 or 20) of the / each row of impressions corresponds exactly to the distance between the stamping stamp segments (76).
6. Verfahren nach Anspruch 4 oder 5, d a d u r c h g e k e n n z e i c h n e t, daß die Drehwinkelposition der Prägewalze (36) bzw. ihrer Prägestempelsegemente (76) und eine vorgegebene Kennung des Substrates (10) bzw. jedes Nutzens (12) des Substrates (10) mittels einer Regelungseinrichtung (58) aneinander angepaßt werden.6. The method according to claim 4 or 5, characterized in that the rotational angle position of the embossing roller (36) or its embossing die segments (76) and a predetermined identifier of the substrate (10) or each benefit (12) of the substrate (10) by means of a control device (58) can be adapted to each other.
7. Verfahren nach Anspruch 6, d a d u r c h g e k e n n z e i c h n e t, daß die Vorschubposition der Prägefolie (16) bzw. ihrer Abdrucke (18, 20) bestimmt und mittels der Regelungseinrichtung (58) an die Drehwinkelposition der Prägestation (34) bzw. ihrer Prägestempelsegmente (76) angepaßt wird.7. The method according to claim 6, characterized in that the feed position of the embossing film (16) or its impressions (18, 20) is determined and adapted by means of the control device (58) to the rotational angle position of the embossing station (34) or its embossing die segments (76) becomes.
8. Verfahren nach einem der Ansprüche 4 bis 7, d a d u r c h g e k e n n z e i c h n e t, daß die Heißprägefolie (16) nach dem Verlassen der Prägestation (34) zum Ablösen vom entsprechenden beprägten Substrat (10) abgekühlt (bei 46) wird.8. The method according to any one of claims 4 to 7, that the hot stamping foil (16) is cooled (at 46) after leaving the stamping station (34) for detachment from the corresponding stamped substrate (10).
9. Verfahren nach einem der Ansprüche 4 bis 8, d a d u r c h g e k e n n z e i c h n e t, daß die Prägefolie (16) nach dem Verlassen der Prägestation (34) aus der Folienebene heraus um 90 Winkelgrad verschwenkt um ein Paar zur Prägewalze (36) senkrecht orientierte Versetzrollen (68) umgelenkt und hierbei quer zur Transportrichtung um den Abstand benachbarter Nutzen-Reihen versetzt und anschließend um die entsprechende Nutzen-Reihe quer versetzt wieder der Prägestation zugeführt wird, so daß in der Prägestation (34) simultan mindestens zwei Nutzenreihen mit Abdrucken (18, 20) beprägt werden.9. The method according to any one of claims 4 to 8, characterized in that the embossing film (16) after leaving the embossing station (34) pivoted out of the film plane by 90 degrees by a pair of displacement rollers (68) oriented perpendicular to the embossing roller (36). deflected and offset transversely to the transport direction by the distance between adjacent rows of sheets and then laterally fed back to the embossing station so that it is offset transversely by the corresponding row of sheets so that at least two rows of sheets with impressions (18, 20) are simultaneously imprinted in the embossing station (34) become.
10. Verfahren nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß das Substrat (10) den Abdrucken (18, 20) entsprechend registerhaltig mit einem das Mittel zur selektiven Übertragung bestimmter Abdrucke (18, 20) auf das Substrat (10) bildenden aktivierbaren Kleber versehen wird, der anschließend vor der Zuführung des Substrats (10) zur Station (34) aktiviert wird.10. The method according to claim 1, characterized in that the substrate (10) of the prints (18, 20) is provided in register with an activatable adhesive forming the means for the selective transfer of certain prints (18, 20) to the substrate (10), which is then activated before the substrate (10) is fed to the station (34).
11. Verfahren nach Anspruch 10, d a d u r c h g e k e n n z e i c h n e t, daß als aktivierbarer Kleber ein energieaktivierbarer Primer oder ein Mehrkomponentenkleber, dessen Komplementärkomponente den Abdrucken (18, 20) entsprechend registerhaltig auf das Substrat (10) aufgebracht wird, verwendet wird.11. The method of claim 10, d a d u r c h g e k e n n z e i c h n e t that an energy-activatable primer or a multi-component adhesive, the complementary component of which is applied to the impressions (18, 20) in register with the substrate (10), is used as the activatable adhesive.
12. Verfahren nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß ein Träger (12) verwendet wird, bei dem die Abdrucke (18, 20) in Transportrichtung voneinander äquidistant beabstandet sind.12. The method according to any one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that a carrier (12) is used in which the imprints (18, 20) are equidistantly spaced apart from each other in the transport direction.
13. Verfahren nach Anspruch 4, d a d u r c h g e k e n n z e i c h n e t, daß in der Station (34) eine Prägewalze (36) verwendet wird, deren Prägestempelsegmente (76) in Umfangsrichtung voneinander einen Abstand besitzen, der an den in Transportrichtung gegebenen Abstand hintereinander befindlicher Nutzen (12) jeder Nutzenreihe angepaßt ist.13. The method according to claim 4, characterized in that in the station (34) an embossing roller (36) is used, the embossing die segments (76) in Have a distance from one another in the circumferential direction which is adapted to the benefit (12) of each benefit row located one behind the other in the transport direction.
14. Verfahren nach Anspruch 10 oder 11, d a d u r c h g e k e n n z e i c h n e t , daß der aktivierbare Kleber bzw. die Komplementärkomponente des Mehrkomponentenklebers mittels eines Druckwerkes registerhaltig auf das14. The method of claim 10 or 11, d a d u r c h g e k e n n z e i c h n e t that the activatable adhesive or the complementary component of the multi-component adhesive by means of a printing unit on the register
Substrat (10) aufgedruckt wird, bevor das derartig vorbereitete Substrat (10) der Station (34) zugeführt wird.Substrate (10) is printed on before the substrate (10) prepared in this way is fed to the station (34).
15. Verfahren nach einem der Ansprüche 1 bis 14, d a d u r c h g e k e n n z e i c h n e t, daß ein auf eine Rolle (30) aufgewickelter Substratstreifen (10) verwendet wird.15. The method according to any one of claims 1 to 14, so that a substrate strip (10) wound onto a roll (30) is used.
16 Verfahren nach einem der Ansprüche 1 bis 14 d a d u r c h g e k e n n z e i c h n e t, daß blattartige Substrate (10) verwendet werden, die aneinander anschließend der Prägestation (34) zugeführt werden.16 Method according to one of claims 1 to 14 d a d u r c h g e k e n n z e i c h n e t that sheet-like substrates (10) are used, which are subsequently fed to the embossing station (34).
17. Vorrichtung zum Übertragen von Abdrucken (18, 20) von einem Träger (16) auf ein Substrat (10) in einer Station (34), der eine Vorratseinrichtung (30) für das Substrat (10) vorgeordnet und eine Ablösestation (48) nachgeordnet ist, d a d u r c h g e k e n n z e i c h n e t, daß der Ablösestation (48) eine Versetzeinrichtung (50) nachgeordnet ist, mittels welcher der Träger (16) mindestens ein weiteres Mal der Station (34) um den Querabstand benachbarter Nutzenreihen seitlich und in Transportrichtung um den Abstand zwischen unmittelbar hintereinander befindlichen Abdrucken (18, 20) längsversetzt zugeführt wird.17. Device for transferring impressions (18, 20) from a carrier (16) to a substrate (10) in a station (34), which has a storage device (30) for the substrate (10) upstream and a detachment station (48) is arranged downstream, characterized in that the removal station (48) is followed by a displacement device (50) by means of which the carrier (16) at least one more time around the station (34) the transverse spacing of adjacent rows of sheets is fed laterally and in the transport direction by the distance between imprints (18, 20) located directly behind one another.
18. Vorrichtung nach Anspruch 17, d a d u r c h g e k e n n z e i c h n e t, daß die Vorratseinrichtung (30) eine Rolle für ein streifenförmiges Substrat (10) aufweist.18. The apparatus according to claim 17, so that the supply device (30) has a roller for a strip-shaped substrate (10).
19. Vorrichtung nach Anspruch 17, d a d u r c h g e k e n n z e i c h n e t, daß die Vorratseinrichtung (30) ein Behältnis für einen Stapel blattartiger Substrate (10) und eine Einrichtung zur lückenlosen kontinuierlichen19. The apparatus of claim 17, d a d u r c h g e k e n n z e i c h n e t that the storage device (30) a container for a stack of sheet-like substrates (10) and a device for continuous continuous
Zuführung der einzelnen Substratblätter zur Station (34) aufweist.Feeding the individual substrate sheets to the station (34).
20. Vorrichtung nach Anspruch 17, d a d u r c h g e k e n n z e i c h n e t, daß die Station (34) als Prägestation mit einer Prägewalze (36) ausgebildet ist, die an ihrer Mantelfläche mit die nebeneinander vorgesehenen Nutzen (121) simultan beprägenden Prägestempelsegmenten (76) versehen ist, die in Umfangsrichtung der Prägewalze (36) voneinander beabstandet sind, wobei der Abstand zwischen benachbarten PrägeStempelSegmenten (76) an den in Transportrichtung gegebenen Abstand hintereinander befindlicher Nutzen (12) jeder Nutzenreihe angepaßt ist. 20. The apparatus according to claim 17, characterized in that the station (34) is designed as an embossing station with an embossing roller (36) which is provided on its outer surface with the juxtaposed benefits (121) simultaneously embossing die segments (76) in the circumferential direction the embossing roller (36) are spaced apart from one another, the distance between adjacent embossing die segments (76) being adapted to the spacing of the panels (12) of each row of panels one behind the other in the transport direction.
21. Vorrichtung nach Anspruch 17, d a d u r c h g e k e n n z e i c h n e t , daß zwischen der Station (34) und der Vorratseinrichtung (30) eine zum registerhaltigen selektiven Aufbringen eines aktivierbaren Klebers auf das Substrat (10) dienende Einrichtung vorgesehen ist.21. The apparatus of claim 17, d a d u r c h g e k e n e z e i c h n e t that between the station (34) and the storage device (30) is provided for registering selective application of an activatable adhesive to the substrate (10) serving device.
22. Vorrichtung nach Anspruch 21, d a d u r c h g e k e n n z e i c h n e t, daß die Einrichtung ein Druckwerk aufweist.22. The apparatus of claim 21, d a d u r c h g e k e n n z e i c h n e t that the device has a printing unit.
23. Vorrichtung nach Anspruch 22, d a d u r c h g e k e n n z e i c h n e , daß die Einrichtung eine zur Aktivierung des von einem Primer gebildeten Klebers vorgesehene Strahlungseinrichtung (96) aufweist.23. The apparatus according to claim 22, so that the device has a radiation device (96) provided for activating the adhesive formed by a primer.
24. Vorrichtung nach Ansprüche 20, d a d u r c h g e k e n n z e i c h n e t, daß stromaufwärts vor der Prägestation (34) mindestens zwei gebremste Vorschubrollen (44, 52) vorgesehen sind, an welchen der von einer Prägefolie gebildete Träger (16) umgelenkt und in bezug auf die Prägestation (34) derartig gedehnt wird, daß der24. The device according to claims 20, characterized in that upstream of the embossing station (34) at least two braked feed rollers (44, 52) are provided, on which the carrier (16) formed by an embossing film is deflected and in relation to the embossing station (34) is stretched in such a way that the
Abstand der Abdrucke (18, 20) der/jeder Abdruckreihe genau dem Abstand der PrägeStempelsegmente (76) entspricht.Distance of the impressions (18, 20) of the / each row of impressions corresponds exactly to the distance of the embossing stamp segments (76).
25. Vorrichtung nach Anspruch 24, d a d u r c h g e k e n n z e i c h n e t, daß zur Anpassung an eine vorgegebene Kennung des Substrates (10) bzw. jedes Nutzens (12) desselben zwischen der Drehwinkelposition der Prägewalze (36) bzw. ihrer PrägeStempelsegmente (76) eine Regelungseinrichtung (58) vorgesehen ist.25. The device according to claim 24, characterized in that for adaptation to a predetermined identifier of the substrate (10) or each benefit (12) of the same between the rotational angle position of the embossing roller (36) or its embossing stamp segments (76) a control device (58) is provided.
26. Vorrichtung nach Anspruch 25, d a d u r c h g e k e n n z e i c h n e t, daß die Regelungseinrichtung (58) eingangsseitig mit einer Leseeinrichtung (60) und ausgangsseitig mit einem Stellantrieb für die Prägewalze (36) und/oder für die Vorschubrollen (44, 52, 84) verbunden ist.26. The apparatus of claim 25, so that the control device (58) is connected on the input side to a reading device (60) and on the output side to an actuator for the embossing roller (36) and / or for the feed rollers (44, 52, 84).
27. Vorrichtung nach Anspruch 25 oder 26, d a d u r c h g e k e n n z e i c h n e t, daß zwischen den Vorschubrollen (44, 52) und der Prägestation (34) mindestens eine zur Prägefolie (16) zugeordnete zweite Leseeinrichtung (62) vorgesehen ist, die mit der Regelungseinrichtung (58) verbunden ist.27. The apparatus of claim 25 or 26, characterized in that between the feed rollers (44, 52) and the embossing station (34) at least one associated with the embossing film (16) is provided a second reading device (62) which is connected to the control device (58) is.
28. Vorrichtung nach Anspruch 17, d a d u r c h g e k e n n z e i c h n e t, daß die Versetzeinrichtung (50) mindestens ein Paar Versetzrollen (68) aufweist, die in Transportrichtung zueinander parallel und quer dazu gegeneinander versetzt sind, wobei die Querversetzung der Versetzrollen (68) des/jedes Versetzrollen-Paares dem Querabstand benachbarter Nutzenreihen des Substrates (10) entspricht.28. The apparatus according to claim 17, characterized in that the displacement device (50) has at least one pair of displacement rollers (68) which are offset from one another in the direction of transport parallel and transversely to one another, the transverse displacement of the displacement rollers (68) of the / each displacement roller pair corresponds to the transverse spacing of adjacent rows of benefits of the substrate (10).
29. Vorrichtung nach Anspruch 28, d a d u r c h g e k e n n z e i c h n e t, daß mindestens eine Versetzrolle (68) des/jedes Versetzrollen-Paares in Transportrichtung und/oder quer zur Transportrichtung verstellbar ist. 29. The device according to claim 28, characterized in that at least one displacement roller (68) of the / each displacement roller pair is adjustable in the transport direction and / or transversely to the transport direction.
30. Vorrichtung nach Anspruch 20, d a d u r c h g e k e n n z e i c h n e t, daß jedes Prägestempelsegment (76) der Prägewalze (36) mit einer Heizeinrichtung (80) ausgebildet ist, 30. The device according to claim 20, d a d u r c h g e k e n n z e i c h n e t that each embossing die segment (76) of the embossing roller (36) is formed with a heating device (80),
EP93912622A 1992-12-14 1993-06-23 Process and device for transferring prints from a support to a substrate Expired - Lifetime EP0673317B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4242105 1992-12-14
DE4242105 1992-12-14
PCT/DE1993/000555 WO1994013487A1 (en) 1992-12-14 1993-06-23 Process and device for transferring prints from a support to a substrate

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EP0673317A1 true EP0673317A1 (en) 1995-09-27
EP0673317B1 EP0673317B1 (en) 1996-09-25

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EP (1) EP0673317B1 (en)
JP (1) JP3233636B2 (en)
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DE (1) DE59304008D1 (en)
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CA2149247C (en) 2005-09-20
JP3233636B2 (en) 2001-11-26
GR3021577T3 (en) 1997-02-28
WO1994013487A1 (en) 1994-06-23
DK0673317T3 (en) 1996-11-11
ES2092826T3 (en) 1996-12-01
ATE143311T1 (en) 1996-10-15
DE59304008D1 (en) 1996-10-31
AU682470B2 (en) 1997-10-09
CA2149247A1 (en) 1994-06-23
TW222701B (en) 1994-04-21
AU4307593A (en) 1994-07-04
EP0673317B1 (en) 1996-09-25
HK1003984A1 (en) 1998-11-13
US6202549B1 (en) 2001-03-20
JPH08508686A (en) 1996-09-17
BR9307641A (en) 1999-08-31
UA35601C2 (en) 2001-04-16

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