EP2902201A2 - Dispositif et procédé de fabrication d'une surface structurée sur une matière d'impression - Google Patents

Dispositif et procédé de fabrication d'une surface structurée sur une matière d'impression Download PDF

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Publication number
EP2902201A2
EP2902201A2 EP14196524.4A EP14196524A EP2902201A2 EP 2902201 A2 EP2902201 A2 EP 2902201A2 EP 14196524 A EP14196524 A EP 14196524A EP 2902201 A2 EP2902201 A2 EP 2902201A2
Authority
EP
European Patent Office
Prior art keywords
embossing
cylinder
printing
lacquer layer
die
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.)
Withdrawn
Application number
EP14196524.4A
Other languages
German (de)
English (en)
Other versions
EP2902201A3 (fr
Inventor
Rainer Stamme
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.)
Manroland Web Systems GmbH
Original Assignee
Manroland Web Systems GmbH
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 Manroland Web Systems GmbH filed Critical Manroland Web Systems GmbH
Publication of EP2902201A2 publication Critical patent/EP2902201A2/fr
Publication of EP2902201A3 publication Critical patent/EP2902201A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/08—Print finishing devices, e.g. for glossing prints
    • 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

Definitions

  • the invention relates to a device for producing a structured surface on a printing substrate. Furthermore, the invention relates to a method for producing a structured surface on a printing substrate. The invention further relates to a method for producing a stamping die.
  • sheet-fed printing presses and web-fed printing presses are well known in practice.
  • sheetfed presses sheet-shaped substrates and web-fed substrates are printed.
  • These printing presses may be conventional, printing-form-based printing machines or also printing-form-free, digital printing presses.
  • offset printing presses are preferably used for printing substrates with conventional sheet-fed presses or conventional web-fed printing presses.
  • coatings can be transparent, transparent coatings as well as colored coatings.
  • coatings on a substrate for example in coating plants
  • such coating plants can work, for example, by the offset printing process or flexographic printing process or gravure printing process or screen printing process.
  • varnishes of variable layer thickness via inkjet printing processes in this regard, the state of the art US Pat. No. 7,451,698 B2 directed.
  • a three-dimensionally structured surface on printed products.
  • These may be, for example, haptically perceptible surface structures, which may serve, for example, to provide a security function, such as an anti-counterfeiting function.
  • films and thin paper materials should be able to be provided with a structured surface.
  • the back of the substrate should not be rendered unusable as a print image carrier.
  • the present invention has the object to provide a novel device for producing a structured surface on a substrate and a corresponding method.
  • the device according to the invention comprises at least the following components: a coating unit for applying a lacquer coating to a printing substrate; a coater downstream of the coating unit for transferring a three-dimensional structure into the lacquer layer applied to the printing material with the aid of the coating unit before drying thereof; a drying device arranged downstream of the embossing unit for drying the lacquer layer applied with the aid of the coating unit and structured with the aid of the embossing machine, forming the structured surface on the printing material.
  • both sides of a printing material can serve as a print image carrier or optionally be provided on both sides with a structured surface.
  • the embossing machine does not transfer the three-dimensional structure exclusively into the lacquer layer applied with the aid of the lacquer coating before drying the same into the printing substrate which carries the lacquer layer. This ensures that the material structure of the substrate is not changed or even damaged during the formation of the structured surface.
  • the embossing machine has a stamping die carrying a stamping cylinder and cooperating with the stamping cylinder counter cylinder, wherein the substrate provided with paint layer is movable through an embossing gap formed between the embossing cylinder and the counter cylinder while transmitting the three-dimensional structure.
  • Such a design of the embossing mill is particularly advantageous.
  • This high processing speeds can be realized in the production or training of the structured surface on the substrate, namely those speeds that are adapted to the printing speeds of known printing machines.
  • the device is particularly suitable for integration into a printing machine designed as a sheet-fed printing press or as a web-fed printing press, in order to form the structured surfaces inline with the printing process at high speed on the printed substrates.
  • the cylinder group of the embossing machine comprising the embossing cylinder and the counter-cylinder is driven in an eigenmotor manner via a direct drive.
  • this cylinder group can be synchronized to the rest of the printing process. In this case, no sluggish or braking slip occurs at the cylinder group of the embossing mill, so that structured surfaces of high quality can be formed on the printing substrates.
  • the method according to the invention for producing a structured surface on a printing substrate is defined in claim 12.
  • the method according to the invention for producing a stamping die for use in the method according to the invention and / or in the method according to the invention is defined in claims 15 and 16.
  • the present invention relates to an apparatus for producing a structured surface on a printing substrate. Furthermore, the invention relates to a method for producing a structured surface on a printing substrate.
  • the invention relates to a method for producing a stamping die for use in a device according to the invention and / or a method according to the invention.
  • Fig. 1 shows a highly schematic of a device 10 according to the invention for producing a structured surface on a web-shaped substrate 11.
  • the web-shaped substrate 11 is in Fig. 1 one in advance printed substrate, which is held ready on a Rollenzuglass noise 12 in the form of a Beffystoffrolle 13.
  • the device 10 comprises a coating unit 14 in order to apply a lacquer layer to the printing material 11.
  • the coating unit 14 is in the embodiment of Fig. 1 to a working according to the offset printing principle coating unit. It should be noted that other coating plants can be used, which are based on other printing processes, such as coating plants, the high-pressure process, gravure printing or screen printing process or the inkjet process, which also christformund format variable is - based.
  • the coating unit 14 is used to apply a flat lacquer layer of constant or variable thickness on at least parts of the printing material eleventh
  • the coating unit 14 is downstream of a stamping 15.
  • the embossing unit 15 serves to transfer a three-dimensional structure into the lacquer layer applied to the printing material 11 with the aid of the coating unit 14 before it is dried.
  • the embossing unit 14 transfers the three-dimensional structure exclusively into the lacquer layer applied to the printing material 11 with the aid of the coating unit 14 and not into the printing material carrying the lacquer layer, thus accordingly the material structure of the printing material by transferring the three-dimensional structure into the lacquer layer in the area of the embossing unit 15 is not changed.
  • the embossing unit 15 is followed by a drying or curing device 16 to cure or dry the paint applied with the aid of the coating unit 14 and structured by means of the embossing unit 15 to form the structured surface on the printing substrate 11.
  • the drying or curing device 16 may be an infrared drying device or a UV curing device or an electron beam curing device or a hot air drying device or any other Drying device act by means of which a paint can be cured or dried.
  • the drying device 16 is downstream of a further processing device 17 to further process the substrate 11 provided with the structured surface.
  • This can be, for example, a folding unit or a cross cutter.
  • the further processing device 17 may be a rewinding device in order subsequently to rewind the printed substrate 11 provided with the structured surface onto a reel.
  • Fig. 5 shows a detail of the embossing unit 15, which serves to transfer a three-dimensional structure in the applied with the aid of the coating unit 14 on the substrate 11 lacquer layer 18 before drying the lacquer layer.
  • Fig. 5 a printing material 11, which is provided on one side with a flat lacquer layer 18, wherein the embossing unit 15 has a stamping die 19 carrying embossing cylinder 20 and cooperating with the embossing cylinder 20 counter-cylinder 21.
  • the printing material 11 provided with the sheet-like lacquer layer 18 is moved through an embossing gap 22 formed between the embossing cylinder 20 and the counter-cylinder 21, whereby a three-dimensional structure 23 is transferred into the flat lacquer layer 18 of the printing material 11 via the embossing die 19.
  • the lacquer layer 18 applied to the printing substrate 11 has not yet hardened.
  • the curing takes place rather downstream of the embossing unit 15 in the drying device 16, which is downstream of the embossing machine 15.
  • the procedure is such that a relatively low pressure is exerted on the printing material 11 in the two-dimensional lacquer layer 18 during the transfer of the three-dimensional structure. This prevents that the not yet cured lacquer layer 18, which still assumes a viscous state, is crushed. On the contrary, the pressure is sufficient to not transfer the three-dimensional structure predetermined by the embossing die 19 into the lacquer layer 18, however, into the printing material 11.
  • the embossing die 19 is a plate that can be tensioned on the embossing cylinder 20 or a cloth that can be tensioned on the embossing cylinder 20, a so-called leading end and a so-called trailing end of such a plate-like or cloth-like embossing die 19 can be tensioned in a chucking channel 24 of the embossing cylinder 20.
  • embossing die on a ferromagnetic sheet and to clamp this on a magnetic or magnetizable embossing cylinder.
  • This embodiment has the advantage that in the case of partial painting or partial stamping of the coating, the at least one stamping die can be positioned as desired on the stamping cylinder.
  • the embossing die 19 received by the embossing cylinder 20 may be flexible or rigid. Then, when the embossing die 19 is flexible, the counter-cylinder 21 is preferably rigid on its surface. On the other hand, if the embossing patrix 19 is rigid, the counter-cylinder 21 is preferably flexible on its surface so as to allow, in combination on the one hand, a secure transfer of the three-dimensional structure starting from the embossing patrix 19 into the two-layer lacquer layer 18 of the printing substrate 11 and, on the other hand, the small one Pressure in the transfer of the three-dimensional structure in the To ensure lacquer layer 18 and thus to prevent squeezing of the lacquer layer 18 in the embossing unit 15 and damage to the printing material 11.
  • the embossing cylinder 20 received embossing die 19 has an embossing surface of a paint-repellent material.
  • it can then be prevented that the not yet cured lacquer of the sheet-like lacquer layer 18 in the embossing unit 15 adheres to the embossing die 19 and contaminates the same. This can improve the quality of the structured surface being formed.
  • the embossing machine 15 may comprise a cleaning device, which is preferably associated with the embossing cylinder 20, namely such that the embossing die 19 can be continuously or temporarily cleaned during the embossing process.
  • the embossing cylinder 20 and the counter cylinder 21 comprehensive cylinder group of the embossing 15 is associated with a direct drive to drive embossing cylinder 20 and counter-cylinder 21 in the embossing machine 13 self-powered via this direct drive.
  • a direct drive to drive embossing cylinder 20 and counter-cylinder 21 in the embossing machine 13 self-powered via this direct drive.
  • the quality of the structured surface on the printing material 11 can be further increased.
  • FIG. 1 shows an embodiment of the invention, in which the device 10 is integrated to produce a structured surface on a substrate in a web printing press.
  • the device 10 according to the invention is preceded by a plurality of printing units 25 comprehensive printing unit 26 for printing a web-shaped substrate 11, wherein in Fig. 2 the web-shaped printing substrate 11 is transported in the horizontal direction by the printing units 25.
  • Such a web transport of the printing material web is customary in web presses designed as commercial printing presses.
  • the invention is not limited to such a configuration of a web-fed printing machine.
  • the invention can also be used in web-fed printing presses with a vertical web run of the web-shaped printing material web to be printed, as is usual in newspaper printing presses.
  • the printing units 25 may preferably be offset and / or gravure and / or flexo printing units and / or digital printing units.
  • the invention can also be used in printing presses designed as sheet-fed printing presses.
  • a device 10 according to the invention which comprises at least the coating unit 14, the embossing unit 15 and the drying device 16, Printed sheets offline to be printed on the same with a structured surface.
  • Printed sheets are held ready as a stack in a feeder 27 and then stacked on the same in a boom 27 to form the structured surface.
  • the formation of the structured surface takes place on printed sheet-shaped substrates inline for printing the same, according to Fig. 4 the inventive device 10 printing units 29 are upstream of a sheet-fed press.
  • a structured surface can be formed with the method according to the invention, in particular on thin substrates, on sensitive substrates such as corrugated board and foils.
  • the invention finds use for forming a structured film on a film-like material.
  • a film-like printing material may be, for example, a film of a thermoplastic material or else a film of aluminum.
  • Drying of the structured surface is preferably carried out using UV drying, since under UV radiation, dryable lacquers can be dried particularly quickly.
  • the embossing patterns 19 used in the method according to the invention and in the device according to the invention can be produced by transferring to a blank 30 provided a digital print image generated by means of a digital image data generation method by means of an exposure process. Subsequently, the embossing profile 31 is cured and unexposed profile areas are washed out. This makes it possible to produce a stamping die 19 simply and reliably.
  • stamping die 19 it is possible to produce a stamping die 19 by applying the blanking profile 31 to a blank 30 provided by means of a three-dimensional inkjet printing method and thus a three-dimensional inkjet printing technique.
  • a lacquer layer is applied to the corresponding surface of the printing material, wherein the not yet dried lacquer layer is provided in a stamping mill with a three-dimensional structure. Subsequently, the drying of the lacquer layer takes place to form the structured surface on the substrate.
  • the invention can be used in particular to form three-dimensional structures on a surface of a printed product in packaging printing or decor printing or security printing.
  • structured surfaces can be applied to a substrate, which increase the security against counterfeiting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP14196524.4A 2013-12-16 2014-12-05 Dispositif et procédé de fabrication d'une surface structurée sur une matière d'impression Withdrawn EP2902201A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013020644 2013-12-16

Publications (2)

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EP2902201A2 true EP2902201A2 (fr) 2015-08-05
EP2902201A3 EP2902201A3 (fr) 2015-11-11

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105313449A (zh) * 2015-12-01 2016-02-10 佛山市南海区三简包装有限公司 一种全息模压机
EP3381685A1 (fr) * 2017-03-30 2018-10-03 Mayr-Melnhof Karton AG Imprimante
DE102018217261A1 (de) 2017-11-09 2019-05-09 Heidelberger Druckmaschinen Aktiengesellschaft Druckverfahren und Bogendruckmaschine
EP3527375A4 (fr) * 2016-10-14 2020-05-20 Komori Corporation Dispositif de traitement
US11413894B2 (en) 2018-10-02 2022-08-16 Heidelberger Druckmaschinen Ag Method for producing a printed product
DE102023132968A1 (de) * 2023-11-27 2025-05-28 Koenig & Bauer Ag Druckmaschine mit Non Impact Druckeinheit und Rilleinrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7451698B2 (en) 2004-01-15 2008-11-18 Manroland Ag Device for producing a coating on printed products from a printing press

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826974C2 (de) * 1998-06-18 2002-06-20 Roland Man Druckmasch Prägevorrichtung
DE102008028949B4 (de) * 2007-06-28 2012-04-12 Ryobi Ltd. Oberflächenbehandlungsvorrichtung für ein bedrucktes Blatt
DE102009000573A1 (de) * 2009-02-03 2010-08-05 Manroland Ag Verfahren und Vorrichtung zur Veredelung eines Bedruckstoffes in einer Verarbeitungsmaschine
DE102011005594A1 (de) * 2011-03-16 2012-09-20 manroland sheetfed GmbH Druckvorrichtung einer Verarbeitungsmaschine für Bedruckstoffe und Verfahren zum Betreiben

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7451698B2 (en) 2004-01-15 2008-11-18 Manroland Ag Device for producing a coating on printed products from a printing press

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105313449A (zh) * 2015-12-01 2016-02-10 佛山市南海区三简包装有限公司 一种全息模压机
EP3527375A4 (fr) * 2016-10-14 2020-05-20 Komori Corporation Dispositif de traitement
US11254117B2 (en) 2016-10-14 2022-02-22 Komori Corporation Processing device
EP3381685A1 (fr) * 2017-03-30 2018-10-03 Mayr-Melnhof Karton AG Imprimante
DE102018217261A1 (de) 2017-11-09 2019-05-09 Heidelberger Druckmaschinen Aktiengesellschaft Druckverfahren und Bogendruckmaschine
US11413894B2 (en) 2018-10-02 2022-08-16 Heidelberger Druckmaschinen Ag Method for producing a printed product
DE102023132968A1 (de) * 2023-11-27 2025-05-28 Koenig & Bauer Ag Druckmaschine mit Non Impact Druckeinheit und Rilleinrichtung
WO2025113827A1 (fr) 2023-11-27 2025-06-05 Koenig & Bauer Ag Machine d'impression avec unité d'impression sans impact et dispositif de rainurage

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