EP3122571B2 - Vergoldungsverfahren und -system - Google Patents

Vergoldungsverfahren und -system Download PDF

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Publication number
EP3122571B2
EP3122571B2 EP15711225.1A EP15711225A EP3122571B2 EP 3122571 B2 EP3122571 B2 EP 3122571B2 EP 15711225 A EP15711225 A EP 15711225A EP 3122571 B2 EP3122571 B2 EP 3122571B2
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EP
European Patent Office
Prior art keywords
gilding
substrate
film
areas
pressure
Prior art date
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Active
Application number
EP15711225.1A
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English (en)
French (fr)
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EP3122571A1 (de
EP3122571B1 (de
Inventor
Edmond Abergel
Raphael Renaud
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.)
MGI Digital Technology SA
Original Assignee
MGI Digital Technology SA
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Publication date
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Application filed by MGI Digital Technology SA filed Critical MGI Digital Technology SA
Priority to PL15711225.1T priority Critical patent/PL3122571T5/pl
Publication of EP3122571A1 publication Critical patent/EP3122571A1/de
Application granted granted Critical
Publication of EP3122571B1 publication Critical patent/EP3122571B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
    • B41F16/002—Presses of the rotary type
    • B41F16/0026—Presses of the rotary type with means for applying print under heat and pressure, e.g. using heat activable adhesive
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41G—APPARATUS FOR BRONZE PRINTING, LINE PRINTING, OR FOR BORDERING OR EDGING SHEETS OR LIKE ARTICLES; AUXILIARY FOR PERFORATING IN CONJUNCTION WITH PRINTING
    • B41G1/00—Apparatus for bronze printing or for like operations
    • B41G1/04—Apparatus for bronze printing or for like operations cylinder type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • 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
    • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
    • B44C1/14—Metallic leaves or foils, e.g. gold leaf

Definitions

  • the present invention relates to the field of substrate customization devices.
  • the invention relates in particular to a method and/or a system for customizing a substrate, according to claims 1 and 6, by depositing an additional coating (or material), generally called “gilding" of a substrate.
  • the present invention relates in particular to a printing method comprising a step of printing a substrate by inkjet followed by a step of "gilding" by contact between the areas of the substrate to be gilded and a device for depositing "gilding", such as a gilding sheet.
  • gilding printed substrates are well known to those skilled in the art.
  • the basic principle of this technique is based on depositing an additional coating (i.e., gilding or material) on the substrate, by a "gilding" deposition device, for example by applying/pressing a foil (carrying said coating or gilding) on selected areas of the substrate so as to adhere the desired part of the foil to the selected areas.
  • This technique may for example involve depositing an adhesive on the substrate in a predetermined pattern before depositing the personalization coating (for example the gilding foil) on the adhesive deposited on the substrate.
  • the deposition of the adhesive may be done using one or more techniques, such as for example inkjet printing, toner-based printing, screen printing or offset printing.
  • the present invention relates in particular to relief inkjet printing techniques, for example using piezoelectric print heads, adapted according to the printing ink and/or varnish used.
  • WO2011110956 which, in its embodiment represented by its figure 2 , describes a cold foil stamping system comprising a pressing system 200 and, upstream of this pressing system, a printing section comprising a printing device 210 (for example, an inkjet printer) for depositing a deposit pattern consisting of a layer of adhesive 222, on a substrate 220.
  • a printing device 210 for example, an inkjet printer
  • the adhesive is hardened and becomes tacky, which allows the sheet to adhere to the pre-established pattern.
  • the pressing is carried out by means of one or more pinch rollers (260) also called pressure cylinders. This pressurization is carried out on the entire sheet of foil.
  • the gilding technique is generally optimized so as to promote better adhesion performance of the gilding leaf on the substrate while improving the visual quality of the gilding deposit on the substrate.
  • the Applicant has found that it is very difficult to reconcile these two conditions with the known gilding techniques.
  • One of the objectives of the present invention is therefore to provide a gilding technique which promotes better adhesion performance of the gilding leaf on the substrate while improving the visual quality of the gilding deposit on the substrate.
  • the present invention therefore aims at least to overcome this major drawback of the prior art.
  • a method of gilding a substrate by applying pressure between the areas of the substrate to be gilded and a gilding sheet comprising a gilding film and a transport layer, characterized in that the step of applying pressure and depositing the gilding film is followed by a step of applying pressure to the areas of the substrate covered with the gilding film.
  • This additional and consecutive step of applying pressure is therefore carried out after separation of the gilding film from the transport layer of the sheet.
  • FIG. 3 illustrates a gilding technique according to a certain embodiment of the present invention.
  • the fundamental advantage of the present invention is that the preferred focusing parameters of the first pressurization step can be independently adjusted relative to those of the second pressurization step.
  • the Applicant has unexpectedly discovered that this makes it possible to optimize both the adhesion performance of the gold leaf on the substrate while improving the visual quality of the gold leaf deposit on the substrate.
  • the present invention is described in an illustrative manner and according to one of its embodiments in the figure 3 .
  • a pressure group according to the present invention On the left side of the figure, we can see a pressure group according to the present invention and which is located downstream of the gilding group shown on the right side of the figure. The substrate therefore moves from right to left.
  • the pressure group consists of at least two motorized rollers, installed opposite each other, rotating in opposite directions, and whose distance is adjustable so as to adapt to different substrate thicknesses; according to a preferred embodiment of the present invention, this adjustment will take into account not only the thickness of the substrate but also the thickness of the ink and/or varnish previously printed on the substrate as well as optionally all the thicknesses added to the substrate during substrate treatment steps preceding the gilding and also optionally taking into account the thicknesses of the films of the gilding leaf deposited by the gilding group(s).
  • the spacing between the facing rollers can be motorized and dynamically controlled.
  • the surface of the upper roller is different from that of the lower roller; in particular, the surface of the upper roller is more compressible than that of the lower roller.
  • the upper roller has a compressible material on its surface allowing it to conform to the shape of the gilding deposit while the lower roller will be made of a harder material, for example incompressible.
  • the upper roller comprises a heating device which improves the hold of the gilding; for example, this heating device can be advantageously used when the gilding film is covered with varnish because the heating allows the softening of said varnish.
  • the pressure group operates with a linear speed (on the surface of the rollers) greater than or equal to that of the gilding group so as not to slow down the machine.
  • the distance between the gilding group and the pressure group is greater than the maximum length of the treated substrates.
  • a feature of the present invention is that it allows a step of treating the gilding film to be carried out by the pressure group which controls this step independently of the deposition step which is controlled by the gilding group; this therefore allows both the adhesion performance of the gilding sheet on the substrate to be optimized while improving the visual quality of the gilding deposit on the substrate.
  • adjustable pressure e.g. from 1 to 10 bar, preferably with an operating pressure greater than 1 bar
  • adjustable speed e.g. an operating pressure of maximum 250°C, for example between 50 and 240°C, preferably between 140 and 220°C, for example 180°C
  • hardness of the upper roller coating between 50 and 95 Shore A.
  • the improvement provided by the present invention has been demonstrated in the laboratory by the Applicant through tests carried out on the quality of the gilding and by making direct visual comparisons between various samples.
  • the quality of the gilding was carried out using the “scotch tape” test: the deposited gilding is first scarified using a cutter, a piece of tape is pressed onto the gilding and then quickly torn off; if the adhesive does not remove the gilding, its adhesion is considered satisfactory.
  • the substrate may be selected from a large number of materials and not be considered limited to materials frequently used in standard printing and/or personalization devices such as paper, cardboard and plastic substrates.
  • Non-limiting examples include metal, paper, non-woven fabric, plastic, for example a methacrylic copolymer resin, polyester, polycarbonate, polyethylene, polypropylene, polystyrene and/or polyvinyl chloride, or even cellulosic-type materials such as, for example, wood, plywood, or crystalline materials such as glass or ceramics, for example.
  • the invention therefore also applies to any combination of these materials, such as, for example, complex materials comprising one or more of these components such as, for example, milk cartons.
  • the substrate (sheet, card, etc.) is generally in a rectangular or square shape.
  • This sheet moves, generally by means of a substrate transport system in a printing machine, along a transport path oriented along a longitudinal axis from at least one input magazine providing the printable substrates and/or customizable, up to at least one output magazine receiving the printed and/or customized substrates.
  • the “side edges” of the substrate are therefore the two edges located on either side of this longitudinal axis; the front and/or rear edges are its transverse edges.
  • the present invention relates to a method and/or a system for gilding.
  • the present invention also relates to a method and/or a printing system comprising gilding the substrate.
  • Any gilding technique suitable for the method of the present invention may be used.
  • the cold foil transfer technique is used.
  • a gilding sheet (which is therefore part of the gilding device) is pressed against the printed areas of the substrate requiring the deposition of said gilding.
  • This contact between the gilding sheet and the substrate is generally carried out by means of two rollers between which the substrate and the gilding sheet are brought into contact.
  • an adhesive will preferably be used.
  • This adhesive may either be positioned on the printed areas (before applying the gilding) or be an integral part of the gilding leaf itself.
  • a gilding leaf is used which incorporates an adhesive film (which will be pressed against the areas to be gilded) and an adhesive (the same or different) is previously applied to the printed areas (before applying the gilding).
  • an ink and/or varnish used for printing make it possible to already give the areas intended to be covered with gilding an adhesive property; this latter option is particularly advantageous because it makes it possible to avoid adding glue to the areas to be gilded and/or to use gilding leaves without an adhesive film.
  • the gilding technique may also comprise an activation step (for example by means of UV rays) making it possible to crosslink the ink and/or the varnish and/or the glue and thus improve the adhesion between the gilding sheet and the raised areas of the substrate.
  • an activation step for example by means of UV rays
  • the words "gilding” and “gilding” used in the present invention are not limited to the use of gold leaf and that any “gilding” device may be used. These terms of course cover all types of decorative foils (sometimes also called metal foils) among which we can cite, as illustrative and non-limiting examples, aluminum, chrome, gold, silver, copper or even salts of optically active metals. In general, a gilding foil pressed against the substrate to be personalized is used, and the present application therefore designates by this term the general use of a gilding device.
  • the gilding sheets used in the present invention are generally supplied in the form of a roll of width substantially equivalent to the transverse dimension of the substrate.
  • the printing method according to the present invention generally relates to inkjet printing of a substrate which highlights areas intended to be covered with a gold foil. Inkjet printing is well known to those skilled in the art.
  • the areas can be any shape, for example dots, letters and/or any other geometric shapes. They can be made of different materials, for example inks and/or varnishes. They can also be covered with a layer of material, for example covered with glue, before the gilding step; however, according to certain embodiments of the present invention, the gilding step is carried out directly on the ink and/or varnish deposited by inkjet.
  • the relief of said areas intended to be covered with a gilding leaf preferably represents a thickness of the order of a micron, preferably greater than five microns, or even greater than ten microns.
  • This thickness - of whatever material previously deposited on the substrate; for example varnish and/or ink - is generally less than a millimeter for relief printing.
  • the present invention could also be applied to substrates that have been printed by 3D technology using inkjet printing (and/or varnish) in successive layers and thus have thicknesses of up to several centimeters, for example less than 2 cm.
  • the present invention also relates to at least one printing and/or personalization device (or system) comprising means for implementing at least one of the methods described in the present application. Thanks to the functional considerations provided in the present application, it is understood that such systems or devices comprise means for performing the functions described with reference to the method and that it is not necessary to detail these means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ink Jet (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Laminated Bodies (AREA)
  • Printing Methods (AREA)

Claims (9)

  1. Verfahren des Bedruckens eines Substrats und der Personalisierung des Substrats durch Vergoldung, umfassend einen Schritt des Bedruckens des Substrats mittels Tintenstrahl, was Bereiche auf dem Substrat hervorhebt, Bereiche, die dann durch Druckbeaufschlagung zwischen den zu vergoldenden Bereichen des Substrats und einem Vergoldungsblatt mit einem Vergoldungsblatt bedeckt werden, umfassend einen Vergoldungsfilm und eine Transportschicht, dadurch gekennzeichnet, dass dem Schritt der Druckbeaufschlagung und des Aufbringens des Vergoldungsfilms und dem Schritt der Trennung des Vergoldungsfilms von der Transportschicht des Blatts ein zusätzlicher und nachfolgender Schritt der Druckbeaufschlagung der von dem Vergoldungsfilm bedeckten Substratbereiche und Temperaturerhöhung des Vergoldungsfilms folgt.
  2. Verfahren nach dem vorangehenden Anspruch, dadurch gekennzeichnet, dass das Vergoldungsblatt aus mehreren übereinander geschichteten Filmen besteht, Folgendes umfassend
    a. einen optionalen Klebefilm,
    b. mindestens einen Vergoldungsfilm,
    c. einen wahlweisen Schutzfilm,
    d. einen Abtrennfilm, und
    e. mindestens eine sogenannte Transportschicht, die den Transport des Vergoldungsblatts ermöglicht.
  3. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Druck beim Schritt der Druckbeaufschlagung der von dem Vergoldungsfilm bedeckten Substratbereiche regulierbar ist und vorzugsweise zwischen 1 und 10 bar liegt, beispielsweise ein Druck, der höher als 1 bar und niedriger als 10 bar ist.
  4. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Temperatur regulierbar ist und vorzugsweise zwischen 50 und 240 °C liegt, beispielweise zwischen 140 und 220 °C liegt.
  5. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Hervorhebung der auf das Substrat gedruckten Bereiche eine Dicke von mehr als einem Mikron, vorzugsweise mehr als fünf Mikrons aufweist.
  6. System des Bedruckens eines Substrats und der Personalisierung des Substrats durch Vergoldung, umfassend eine Gruppe zum Bedrucken des Substrats mittels Tintenstrahl, die dazu ausgestaltet ist, die Bereiche auf dem Substrat mittels Tinte und/oder Lack hervorzuheben, und ein Substratvergoldungssystem, das mindestens eine Gruppe von Druckbeaufschlagung und Aufbringen des Vergoldungsfilms, ausgestaltet zur Druckbeaufschlagung zwischen den zu vergoldenden Bereichen des Substrats und einem Vergoldungsblatt, umfassend einen Vergoldungsfilm und eine Transportschicht, dadurch gekennzeichnet, dass es mindestens eine Druckgruppe umfasst, die eine Heizvorrichtung umfasst, die der Gruppe von Druckbeaufschlagung und Aufbringen des Vergoldungsfilms nachgelagert ist, und Mittel zur Trennung des Vergoldungsfilms von der Transportschicht des Blatts umfasst sowie zur Druckbeaufschlagung der Substratbereiche ausgestaltet ist, die mit dem Vergoldungsfilm bedeckt sind.
  7. System nach dem vorangehenden Anspruch, dadurch gekennzeichnet, dass die Druckgruppe mindestens zwei motorisierte Walzen umfasst, die einander gegenüberliegend installiert sind und gegenläufig rotieren, und deren Abstand derart regulierbar ist, dass er unterschiedlichen Substratdicken angepasst werden kann.
  8. System nach Anspruch 7, dadurch gekennzeichnet, dass die Heizvorrichtung in die obere motorisierte Walze integriert ist.
  9. System nach einem der Ansprüche 7 bis 8, dadurch gekennzeichnet, dass die Härte der Beschichtung der oberen Walze zwischen 50 und 95 Shore-A liegt.
EP15711225.1A 2014-03-24 2015-03-23 Vergoldungsverfahren und -system Active EP3122571B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15711225.1T PL3122571T5 (pl) 2014-03-24 2015-03-23 Sposób i system złocenia

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14290076 2014-03-24
PCT/EP2015/056122 WO2015144637A1 (fr) 2014-03-24 2015-03-23 Procédé et système de dorure

Publications (3)

Publication Number Publication Date
EP3122571A1 EP3122571A1 (de) 2017-02-01
EP3122571B1 EP3122571B1 (de) 2019-02-20
EP3122571B2 true EP3122571B2 (de) 2024-09-04

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Country Status (6)

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US (1) US9895903B2 (de)
EP (1) EP3122571B2 (de)
JP (2) JP6687528B2 (de)
IL (1) IL247440B (de)
PL (1) PL3122571T5 (de)
WO (1) WO2015144637A1 (de)

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PL3122571T5 (pl) * 2014-03-24 2024-12-09 MGI Digital Technology Sposób i system złocenia
JP6672692B2 (ja) * 2015-10-16 2020-03-25 株式会社リコー 印刷物を製造する装置、印刷物、印刷物を製造する方法、液体を吐出する装置
CN106515208B (zh) * 2016-12-08 2018-10-30 万军霞 一种转轮式全自动冷烫机
CN107962861A (zh) * 2017-11-22 2018-04-27 苏州川鹏塑料有限公司 自动化烫金作业及处理飞边的设备
CN112918096B (zh) * 2021-01-22 2022-09-27 江阴市仕旋机械有限公司 一种多模组烫金机

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DE4110801C1 (de) † 1991-04-04 1992-05-27 Kurt 4040 Neuss De Lappe
WO1992017338A1 (de) † 1991-04-04 1992-10-15 Kurt Lappe Foliendruckverfahren sowie folientransfermaschine
US5565054A (en) † 1991-04-04 1996-10-15 Lappe; Kurt Film printing method and film printing device
US5735994A (en) † 1991-04-04 1998-04-07 Lappe; Kurt Film printing device
WO2003020519A1 (en) † 2001-09-05 2003-03-13 Api Foils Limited Dieless foiling
WO2005120832A1 (de) † 2004-06-11 2005-12-22 Leonhard Kurz Gmbh & Co. Kg Vorrichtung zum anbringen mindestens eines flächenabschnitts einer übertragungslage einer transferfolie auf einer materialbahn und deren verwendung
WO2010072339A2 (de) † 2008-12-16 2010-07-01 Ovd Kinegram Ag Verfahren zur herstellung eines sicherheitselements sowie transferfolie
WO2012159871A2 (de) † 2011-05-24 2012-11-29 Leonhard Kurz Stiftung & Co. Kg Verfahren und vorrichtung zum heissprägen

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JP2020124921A (ja) 2020-08-20
WO2015144637A1 (fr) 2015-10-01
EP3122571A1 (de) 2017-02-01
JP7007418B2 (ja) 2022-01-24
PL3122571T3 (pl) 2019-07-31
IL247440B (en) 2020-07-30
JP2017515699A (ja) 2017-06-15
IL247440A0 (en) 2016-11-30
US9895903B2 (en) 2018-02-20
JP6687528B2 (ja) 2020-04-22
US20170072711A1 (en) 2017-03-16
PL3122571T5 (pl) 2024-12-09
EP3122571B1 (de) 2019-02-20

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