EP3446885A1 - Élément de sécurité pour emballage et procédé de fabrication d'un élément de sécurité à haute acuité des bords extrêmes durant la fabrication des éléments d'impression par impression en relief - Google Patents
Élément de sécurité pour emballage et procédé de fabrication d'un élément de sécurité à haute acuité des bords extrêmes durant la fabrication des éléments d'impression par impression en relief Download PDFInfo
- Publication number
- EP3446885A1 EP3446885A1 EP17001433.6A EP17001433A EP3446885A1 EP 3446885 A1 EP3446885 A1 EP 3446885A1 EP 17001433 A EP17001433 A EP 17001433A EP 3446885 A1 EP3446885 A1 EP 3446885A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- halftone
- security
- security element
- threshold
- fractal
- 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- Withdrawn
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 24
- 238000007639 printing Methods 0.000 title claims description 22
- 238000007646 gravure printing Methods 0.000 title claims description 8
- 238000012546 transfer Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 238000010894 electron beam technology Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 238000009459 flexible packaging Methods 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- QHSJIZLJUFMIFP-UHFFFAOYSA-N ethene;1,1,2,2-tetrafluoroethene Chemical group C=C.FC(F)=C(F)F QHSJIZLJUFMIFP-UHFFFAOYSA-N 0.000 description 1
- 229920006129 ethylene fluorinated ethylene propylene Polymers 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920006260 polyaryletherketone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000013606 potato chips Nutrition 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
Definitions
- the invention relates to a method for generating a high marginal edge sharpness in printing elements produced in gravure printing, in particular filigree elements such as letters, characters, motifs, symbols and the like, which simultaneously have an anti-counterfeiting protection.
- the method should be able to be used in particular for the production of packaging, for example flexible packaging films, plastic containers and container covers and the like.
- the outline is usually introduced in its definition already in the electronic image processing.
- elements that are to be provided with a grid are defined with ⁇ 95% and the outline area, ie the area with a sharp edge at 100%.
- the sharp edge usually has a width of 1 to 20 ⁇ m depending on the requirements, in most cases outlines of a width of 5 to 10 ⁇ m are produced.
- a native file produced in the usual Illustrator, ArtPro or PACKZ or similar program is converted into an EPS file and converted into an Opo file. This conversion is necessary to perform the splitting function between grid area ( ⁇ 95%) and outline (100%) automatically. However, this function is only applicable to linework elements (stroke elements) and not to halftone elements.
- the opacity mask is a simplistic image-shaping tool that greatly simplifies the creation of data files, so that this feature should also be preserved in image processing.
- EP 0477442A For example, there is known a method of making such a sharp border or outline in letters, wherein the outline of the letters is formed by continuous groove-shaped cells and the inner area of the letters by punctate cells.
- the corresponding printing tool is produced by laser engraving.
- the outline (the sharp edge) is introduced into the vector data.
- Out JP 3829216 B A method for producing an outline is known in which a line drawing template is integrated in a bitmap image by means of a high-resolution flatbed scanner. The outline of a line drawing image is then provided as vector data and the printing tool is produced accordingly.
- the object of the invention was to provide a security element and a method of producing it, which has sharp edges (outlines) of printing elements, in particular halftone elements, which are produced in the intaglio printing method, and optionally additionally a forgery-proof feature is produced.
- the method should be particularly suitable for the production of packaging, in particular flexible packaging films of plastics or metallic foils, plastic containers and container covers made of plastic films or metallic or metallized carrier substrates.
- the invention therefore provides a security element for packaging, wherein the security element has a carrier substrate, characterized in that the security element is a printed security feature in the form of letters, logos, characters, numbers, symbols, motifs and the like, wherein the security feature is present as a halftone element and has at least partially a sharp edge (outline) has formed and the security element may have a fractal halftone image as another security feature.
- the security element according to the invention has on a Strombtrat at least one printed security feature that is generated by gravure printing or another known printing method, such as flexo, offset, screen, digital printing or the like.
- flexible carrier films are preferably plastic films, for example, PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC , PTFE, ETFE (ethylene tetrafluoroethylene), PTFE (polytetrafluoroethylene), PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride), and EFEP (ethylene-tetrafluoroethylene-hexafluoropropylene fluoropolymer).
- the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 5 to 200 .mu.m, particularly preferably 5 to 50 .mu.m.
- thermally activated paper or composites with paper such as composites with plastics having a basis weight of 20 - 500 g / m 2 , preferably 40 - 200 g / m 2 . be used.
- woven or nonwovens such as continuous fiber webs, staple fiber webs and the like, which may optionally be needled or calendered, may be used as the carrier substrates.
- fabrics or webs of plastics such as PP, PET, PA, PPS and the like, but it can also be woven or nonwovens made of natural, optionally treated fibers, such as viscose fibers are used.
- the nonwovens or fabrics used have a weight per unit area of about 20 g / m 2 to 500 g / m 2 . If necessary, the nonwovens or fabrics must be surface-treated.
- the carrier substrate is printed, for example by gravure printing with at least one security feature.
- a security feature fragile elements in the form of letters, logos, characters, numbers, symbols, motifs and the like are preferably suitable.
- a TIFF file is created in electronic image processing.
- this has a resolution of 320 to 25600 dpi, more preferably 3200 to 12800 dpi.
- a threshold is then defined, from which on the halftone element a sharp edge (outline) is added.
- the threshold is preferably 90-95%.
- a halftone element has information between 0 and 100%. In the range between 96 and 100%, no visual difference is generally discernible. For example, this range is calculated at 95%. As a result, no visual difference is recognizable, the image information contained in the range of 96-100% is compressed so to speak, whereby a sharp edge is formed.
- the halftone element may be a halftone image and / or a text consisting of letters, numbers or the like.
- two threshold values are defined, on the one hand the upper limit for full-tone representation, and on the other hand the lower limit for white.
- the threshold values are dependent on the saturation of the image content, in particular on the expression of the black channel.
- the Line width for the fractal halftone image which is finally in the form of a line image defined.
- a corresponding data file is created in the electronic image processing with the elements to be printed, wherein for the sharp edge or even for the representation of a fractal halftone image, the half-tone representation is converted into a stroke representation.
- the fractal halftone image is preferably created from a motif or from an image.
- individual motifs can be processed according to customer requirements.
- individual fractal halftone images can be created, which are then unique, for example, for a specific packaging.
- an increased security against counterfeiting is achieved, the fractal halftone image is then clearly attributable, for example, to a defined packaging for a defined product.
- the choice of the threshold value also depends on the chosen motif. In general, it is advantageously placed in the area where the main modulation is to be found.
- the proof of a forgery of the fractal half-image can be done in a simple manner.
- the fractal image is scanned in with a high resolution scanner and the pixels of that image are compared to the pixels of the original image using conventional comparison software such as Esko Graphics Viewer, Global Vision, EyeC, Gradient Pixelproof or the like.
- conventional comparison software such as Esko Graphics Viewer, Global Vision, EyeC, Gradient Pixelproof or the like.
- a method is preferably used in which a corresponding printing cylinder with the aid of the laser or Electron beam technology according to the desired patterns, images, lines, letters, shapes and the like is illustrated.
- the data file produced as described above is then exposed to a prepared printing cylinder in a corresponding exposure system.
- a gravure cylinder with a core of iron tube with wall thickness about 20 mm and the following layers: 5-7 microns nickel layer, about 300 microns copper layer; existing photosensitive layer with the corresponding patterns; Shapes, lines, letters in the form of the previously defined grid are illustrated, developed and etched.
- the coating of the cylinder is carried out in the usual way with a Kunststoffübertragungsrad, or by spraying, rolling, brushing, dipping, or by a curtain coating method, preferably in a layer thickness of 2-10 microns with a commercially available photosensitive composition-for example, LD 100, Fa. OHKA Kogyo Ltd or TSER-2104 E4 Fa. Think Laboratory.
- a commercially available photosensitive composition for example, LD 100, Fa. OHKA Kogyo Ltd or TSER-2104 E4 Fa. Think Laboratory.
- compositions are also suitable. It is then exposed directly and / or then the cylinder is provided with an overcoat with a layer thickness of 1 - 5 microns, for example with OC-40 (OHKA Kogyo Ltd) or with an analogous similar commercially available composition.
- the development takes place after the exposure in the usual manner, for example, contactless with sodium carbonate (0.5% solution), this is usually followed by a cleaning process with water, after which the cylinder is dried.
- the image, patterns, shapes and the like defined by the laser or electron beam imaging become visible the surface of the cylinder is reflected.
- the etching can be carried out in various ways, for example by means of a Fe (III) chloride solution or a Cu (II) chloride solution, optionally with the addition of HCl or H2SO4. If appropriate, commercially available and known additives for flank protection can also be added to the etching solution.
- the duration of the action of the etchant depends on the etchant used and is for example when using a Cu-chloride solution with the addition of an acid about 90-2400 sec.
- the cylinder looks blunt and visually dark after the etching process.
- a surface treatment with electrolytic or chemical shining the impression structure can be refined and a brilliant surface can be produced.
- the engraving stylus is preferably a diamond stylus.
- symmetrically ground diamond styluses are used for producing the surface structures of an embossing tool, the styluses each being symmetrically usually at an angle of 90 °.
- 105 deg., 110 deg. , 120 deg. , 130 deg. or 140 deg. is ground.
- small wells are engraved into the cylinder (for example, a copper cylinder) with this engraving stylus.
- the engraving stylus is installed by all manufacturers of engraving machines (e.g., Ohio Engravers, Hell, Daetwyler) in an engraving head to which 2 different control units are attached.
- the actuator for the engraving depth is controlled by an applied DC voltage.
- the frequency of cell production is controlled by an applied AC voltage.
- the engraving heads work between 2800 and 15000 Hz. That is, the engraving machine is able to beat 8000 cells at 8000 Hz into the copper cylinder.
- the depth of the wells is controlled by the intensity of the DC voltage.
- a 256 stripe mode (8 bit) is preferably used. This enables the generation of different color strengths in 256 steps.
- the corresponding angles of the stylus are selected depending on the above-mentioned desired properties of the desired structure.
- the AC voltage can be deactivated or modulated.
- the modulation of the AC voltage can be modulated amplitude or envelope curves. This makes it possible by modulation of the DC voltage different depths, for example, in 256 different depths to introduce into the cylinder: Through this modification no longer arranged in the grid cells are generated, but the cylinder is structured. As a result, the corresponding webs can be introduced in point form.
- the gravure tool can be produced on a known engraving system, for example on an Ohio or Hell engraving system.
- a TransScribe Intagliokopf or xtreme engraving head with DC voltage control used.
- the usually present alternating voltage supply to the engraving head can be deactivated or modulated.
- the cylinder may then be nickel plated or chrome plated in the usual way.
- a surface treatment with the electrolytic or chemical shining refines the impression structure and produces a brilliant surface.
- Such a printing cylinder can also be produced in a direct laser or electron beam process.
- a suitable printing surface e.g. Chromium, copper, nickel, zinc, as well as plastic, elastomers or polymer surfaces etc. are irradiated with the help of a high-energy beam and the material is removed directly.
- the laser beams are equipped with a beam width of 10 microns.
- the halftone elements are introduced by means of engraving and the line elements by means of laser on the printing tool, but also a different combination or mixture technically and procedurally possible.
- FIG. 1 the formation of a sharp edge is shown.
- FIG. 2 a fractal halftone image serving as an additional security element is shown. It shows Fig. 2a the original image, which in this case is a collection of potato chips.
- the Figures 2b, 2c and 2d show fractal halftones made from the original image. Different line weights were defined. For the picture in FIG. 2b was a line thickness of 0.006 mm, for the picture in Fig. 2c a line thickness of 0.03 mm and for the picture in Figure 2d defined a line thickness of 0.04 mm. Other line weights can be defined, for example, a line thickness of 0.060 mm.
Landscapes
- Printing Methods (AREA)
- Printing Plates And Materials Therefor (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17001433.6A EP3446885A1 (fr) | 2017-08-24 | 2017-08-24 | Élément de sécurité pour emballage et procédé de fabrication d'un élément de sécurité à haute acuité des bords extrêmes durant la fabrication des éléments d'impression par impression en relief |
| PCT/EP2018/000344 WO2019037887A1 (fr) | 2017-08-24 | 2018-07-05 | Élément de sécurité pour emballages et procédé de production d'un élément de sécurité présentant une haute netteté des contours dans des éléments d'impression produits par impression en creux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17001433.6A EP3446885A1 (fr) | 2017-08-24 | 2017-08-24 | Élément de sécurité pour emballage et procédé de fabrication d'un élément de sécurité à haute acuité des bords extrêmes durant la fabrication des éléments d'impression par impression en relief |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3446885A1 true EP3446885A1 (fr) | 2019-02-27 |
Family
ID=59713757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17001433.6A Withdrawn EP3446885A1 (fr) | 2017-08-24 | 2017-08-24 | Élément de sécurité pour emballage et procédé de fabrication d'un élément de sécurité à haute acuité des bords extrêmes durant la fabrication des éléments d'impression par impression en relief |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3446885A1 (fr) |
| WO (1) | WO2019037887A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3633596A1 (fr) * | 2018-10-02 | 2020-04-08 | Constantia Pirk GmbH & Co. KG | Procédé d'identification, de vérification d'authenticité et de suivi d'emballages de produits |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477442A1 (fr) | 1989-07-03 | 1992-04-01 | Think Laboratory Co., Ltd. | Méthode pour la formation de caractères d'impression pour la fabrication de plaques pour l'héliogravure en demi-teintes |
| WO2006087129A2 (fr) * | 2005-02-21 | 2006-08-24 | Giesecke & Devrient Gmbh | Support de donnees a image en demi-teinte |
| JP3829216B2 (ja) | 1999-03-17 | 2006-10-04 | 独立行政法人 国立印刷局 | 凹版画線形成体 |
| EP1998550A1 (fr) * | 2007-05-24 | 2008-12-03 | Constantia Hueck Folien GmbH & Co. KG | Caractéristique de sécurité morphologique |
-
2017
- 2017-08-24 EP EP17001433.6A patent/EP3446885A1/fr not_active Withdrawn
-
2018
- 2018-07-05 WO PCT/EP2018/000344 patent/WO2019037887A1/fr active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477442A1 (fr) | 1989-07-03 | 1992-04-01 | Think Laboratory Co., Ltd. | Méthode pour la formation de caractères d'impression pour la fabrication de plaques pour l'héliogravure en demi-teintes |
| JP3829216B2 (ja) | 1999-03-17 | 2006-10-04 | 独立行政法人 国立印刷局 | 凹版画線形成体 |
| WO2006087129A2 (fr) * | 2005-02-21 | 2006-08-24 | Giesecke & Devrient Gmbh | Support de donnees a image en demi-teinte |
| EP1998550A1 (fr) * | 2007-05-24 | 2008-12-03 | Constantia Hueck Folien GmbH & Co. KG | Caractéristique de sécurité morphologique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3633596A1 (fr) * | 2018-10-02 | 2020-04-08 | Constantia Pirk GmbH & Co. KG | Procédé d'identification, de vérification d'authenticité et de suivi d'emballages de produits |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019037887A1 (fr) | 2019-02-28 |
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