EP3122571B1 - Procédé et système de dorure - Google Patents

Procédé et système de dorure Download PDF

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Publication number
EP3122571B1
EP3122571B1 EP15711225.1A EP15711225A EP3122571B1 EP 3122571 B1 EP3122571 B1 EP 3122571B1 EP 15711225 A EP15711225 A EP 15711225A EP 3122571 B1 EP3122571 B1 EP 3122571B1
Authority
EP
European Patent Office
Prior art keywords
gilding
substrate
film
pressure
areas
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.)
Active
Application number
EP15711225.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3122571A1 (fr
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
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
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Application filed by MGI Digital Technology SA filed Critical MGI Digital Technology SA
Priority to PL15711225T priority Critical patent/PL3122571T3/pl
Publication of EP3122571A1 publication Critical patent/EP3122571A1/fr
Application granted granted Critical
Publication of EP3122571B1 publication Critical patent/EP3122571B1/fr
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Classifications

    • 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
    • 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
    • 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 personalization devices for substrates.
  • the invention relates in particular to a method and / or a system for personalizing a substrate, according to claims 1 and 8, by the deposition of an additional coating (or material), generally called “gilding" of a substrate.
  • the present invention relates in particular to a printing method comprising an inkjet substrate printing step followed by a step of "gilding" by contact between the zones of the substrate to be gilded and a deposition device of "Gilding", such as a gilding leaf.
  • the printed substrate gilding techniques are well known to those skilled in the art.
  • the basic principle of this technique lies in the fact of depositing an additional coating (ie, gilding or material) on the substrate, by a device for depositing "gilding", for example by applying / pressing a sheet (carrying said coating or gilding) on selected areas of the substrate so as to adhere to the selected areas the desired portion of the sheet.
  • This technique may for example comprise an adhesive deposit on the substrate in a predetermined pattern before the deposition of the personalization coating (for example the gilding foil) on the adhesive deposited on the substrate.
  • the deposition of the adhesive can be accomplished by 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 ink jet printing techniques in relief, for example using piezoelectric printing heads, adapted according to the ink and / or printing varnish used. .
  • WO2011110956 which, in its embodiment represented by its figure 2 , discloses a cold gilding system comprising a pressing system 200 and, upstream of this pressing system, a printing section comprising a printing device 210 (for example, an ink jet printer) for depositing a deposition pattern consisting of an adhesive layer 222, on a substrate 220.
  • a printing device 210 for example, an ink jet printer
  • the adhesive is cured and becomes tacky, which allows the sheet to adhere to the predetermined pattern .
  • the pressing is carried out by means of one or more nip rollers (260) also called pressure rolls. This pressurization is carried out on the whole of the gilding sheet.
  • the gilding technique is generally optimized so as to favor better performance of adhesion of the gilding sheet to the substrate while improving the visual quality of the deposit of gilding on the substrate.
  • the Applicant has found that it was very difficult to reconcile these two conditions with known gilding techniques.
  • One of the objectives of the present invention is therefore to provide a gilding technique that promotes better performance of adhesion of the gilding sheet to the substrate while improving the visual quality of the deposition of gilding 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 pressurizing between the zones of the substrate to be gilded and a gilding foil comprising a gilding film and a transport layer, characterized in that the step of pressurizing and deposition of the gilding film is followed by a step pressurizing the areas of the substrate covered with gilding film. This additional and subsequent pressurizing step is therefore performed after separation of the gilding film from the transport layer of the sheet.
  • FIGS. 1 and 2 illustrate a gilding technique according to the prior art.
  • the Fig. 3 illustrates a gilding technique according to a certain embodiment of the present invention.
  • the basic advantage of the present invention is that the preferred debugging parameters of the first pressurization can be set independently from those of the second pressurization step.
  • the Applicant has discovered Unexpectedly, this made it possible to optimize both the adhesion performance of the gilding foil on the substrate while improving the visual quality of the deposition of gilding on the substrate.
  • the present invention is described in an illustrative manner and according to one of its embodiments in the figure 3 . It can be seen on the left side of the figure, a pressure group according to the present invention and which is downstream of the gilding group shown on the right side of the figure. The substrate moves from right to left.
  • the pressure group consists of at least two motorized rollers, installed facing each other, rotating in the opposite direction, and whose distance is adjustable so as to adapt to different thicknesses of substrates; 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 steps of treatment of the substrate preceding the gilding and also optionally taking into account the thicknesses of the films of the gilding sheet deposited by the group (s) of gilding.
  • the spacing between the rollers vis-à-vis can be motorized and dynamically controlled.
  • the surface of the upper roll is different from that of the lower roll; in particular, the surface of the upper roll is more compressible than that of the lower roll.
  • the upper roller has on the surface a compressible material allowing it to match the shape of the deposit of gilding while the lower roller will be made of a harder material, for example incompressible.
  • the upper roller comprises a heating device which improves the resistance of the gilding; for example, this heating device can be advantageously used when the gilding film is coated with varnish because the heating allows the softening of said varnish.
  • the pressure unit operates with a linear speed (roller surface) 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 makes it possible to carry out a step of treating the gilding film by the pressure group which controls this step of independently of the deposition step which is controlled by the gilding group; this thus makes it possible to optimize both the adhesion performance of the gilding foil on the substrate while improving the visual quality of the deposition of gilding on the substrate.
  • adjustable pressure for example from 1 to 10 bars, preferably with an operating pressure greater than 1 bar
  • adjustable speed for example an operating pressure of at most 250 ° C, for example between 50 and 240 ° C, preferably between 140 and 220 ° C, for example 180 ° C
  • adjustable temperature for example an operating temperature of at most 250 ° C, for example between 50 and 240 ° C, preferably between 140 and 220 ° C, for example 180 ° C
  • hardness of the coating of the upper roller between 50 and 95 Shore A.
  • the improvement provided by the present invention has been demonstrated in the laboratory by the Applicant through the tests carried out in terms of quality of holding gilding as well as making direct visual comparisons between various samples.
  • the quality of holding of the gilding was carried out by means of the "scotch" test: the gilding deposited is previously scarified with the aid of a cutter, a piece of Scotch is pressed on the gilding then strongly ripped; if the adhesive does not remove the gilding, its adhesion is considered satisfactory.
  • the substrate can be selected from a large number of materials and not be considered as limited to materials frequently used in standard printing and / or personalization devices such as paper, cardboard and plastic substrates.
  • Non-limiting examples are metal, paper, nonwoven fabric, plastic, for example a methacrylic copolymer resin, polyester, polycarbonate, polyethylene, polypropylene, polystyrene and / or chloride.
  • polyvinyl, or even cellulosic 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 complex materials comprising one or more of these components such as milk bricks.
  • the substrate (sheet, card, etc.) is generally in a rectangular or square shape.
  • This sheet moves, generally through 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 store receiving the printed and / or customized substrates.
  • the "lateral edges" of the substrate are therefore the two edges located on either side of this longitudinal axis; the front and / or back edges are its transverse edges.
  • the present invention relates to a method and / or a gilding system.
  • the present invention also relates to a method and / or a printing system comprising a gilding of the substrate.
  • Any gilding technique adapted to the process of the present invention can be used.
  • the cold foil technique also known as "cold foil transfer" is used.
  • a gilding sheet (which is therefore part of the gilding device) is pressed against the areas of the printed substrate requiring the deposition of said gilding.
  • This contact between the gilding foil and the substrate is generally carried out by means of two rollers between which the substrate and the gilding foil are brought into contact.
  • an adhesive is preferably used.
  • This glue can be either positioned on the printed areas (before applying the gilding), or be an integral part of the gilding sheet itself.
  • a gilding sheet is used which incorporates a film of glue (which will be pressed against the zones to be gilded) and is applied in advance a glue (the same or different) on the printed areas (before applying gilding).
  • an ink and / or a varnish used for printing can already give areas to be coated with gilding an adhesive property; the latter option is particularly advantageous because it avoids adding glue on the areas to be browned and / or using gilding sheets without 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 improving the adhesion between the gilding foil 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 employee.
  • These terms cover all types of decorative sheets (sometimes also called foils) among which may be mentioned as illustrative and non-limiting examples, aluminum, chromium, gold, silver, copper or even optically active metal salts.
  • a gilding foil pressed against the substrate to be customized is used, and the present application thus designates by this term the general use of a gilding device.
  • the gilding sheets used in the context of the present invention are generally provided 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 an ink jet substrate printing which highlights areas to be coated with a gilding sheet.
  • Ink jet printing is well known to those skilled in the art.
  • the zones can be all kinds of shapes, for example points, letters and / or any other geometric shapes. They may be made of different materials, for example inks and / or varnish. They may also be covered with a layer of material, for example covered with glue, before the gilding step; however, according to some embodiments of the present invention, the gilding step is carried out directly on the ink and / or the inkjet coated varnish.
  • the relief of said zones intended to be covered with a gilding foil preferably represents a thickness of the order of one micron, preferably greater than five microns, or even greater than ten microns.
  • This thickness - of any material previously deposited on the substrate; for example, varnish and / or ink - is generally less than one millimeter for relief printing.
  • the present invention could also be applied to substrates that have been printed by 3D technology by means of inkjet printing (and / or varnish) in successive layers and thus having thicknesses of up to several centimeters, for example less than 2 cm.
  • the present invention also relates to at least one device (or system) for printing and / or personalization 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)
  • Decoration By Transfer Pictures (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Ink Jet (AREA)
  • Printing Methods (AREA)
EP15711225.1A 2014-03-24 2015-03-23 Procédé et système de dorure Active EP3122571B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15711225T PL3122571T3 (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 (2)

Publication Number Publication Date
EP3122571A1 EP3122571A1 (fr) 2017-02-01
EP3122571B1 true EP3122571B1 (fr) 2019-02-20

Family

ID=50478798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15711225.1A Active EP3122571B1 (fr) 2014-03-24 2015-03-23 Procédé et système de dorure

Country Status (6)

Country Link
US (1) US9895903B2 (he)
EP (1) EP3122571B1 (he)
JP (2) JP6687528B2 (he)
IL (1) IL247440B (he)
PL (1) PL3122571T3 (he)
WO (1) WO2015144637A1 (he)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3122571B1 (fr) * 2014-03-24 2019-02-20 MGI Digital Technology Procédé et système de dorure
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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JPS59232845A (ja) * 1983-06-15 1984-12-27 電気化学工業株式会社 金属箔張り金属基板の製法
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Also Published As

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

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