EP2067063A1 - Mit sicherheitsmerkmalen ausgerüstete substrate und verfahren zu deren herstellung - Google Patents
Mit sicherheitsmerkmalen ausgerüstete substrate und verfahren zu deren herstellungInfo
- Publication number
- EP2067063A1 EP2067063A1 EP07786087A EP07786087A EP2067063A1 EP 2067063 A1 EP2067063 A1 EP 2067063A1 EP 07786087 A EP07786087 A EP 07786087A EP 07786087 A EP07786087 A EP 07786087A EP 2067063 A1 EP2067063 A1 EP 2067063A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- substrate
- metal
- evaporation
- semitransparent
- 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- Withdrawn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
- 239000000758 substrate Substances 0.000 title claims abstract description 123
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 72
- 239000002184 metal Substances 0.000 claims abstract description 72
- 239000011651 chromium Substances 0.000 claims abstract description 30
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 26
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 24
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 229910052709 silver Inorganic materials 0.000 claims abstract description 18
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 239000004332 silver Substances 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 239000002985 plastic film Substances 0.000 claims abstract description 15
- 229920006255 plastic film Polymers 0.000 claims abstract description 15
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 229910052737 gold Inorganic materials 0.000 claims abstract description 13
- 239000010931 gold Substances 0.000 claims abstract description 13
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 13
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 13
- 239000010948 rhodium Substances 0.000 claims abstract description 13
- 239000011135 tin Substances 0.000 claims abstract description 13
- 229910052718 tin Inorganic materials 0.000 claims abstract description 13
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 13
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 13
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 13
- 239000011701 zinc Substances 0.000 claims abstract description 13
- 239000010936 titanium Substances 0.000 claims abstract description 12
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 11
- 239000010941 cobalt Substances 0.000 claims abstract description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 11
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 11
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims abstract description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010937 tungsten Substances 0.000 claims abstract description 11
- 238000004806 packaging method and process Methods 0.000 claims abstract description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract 6
- 238000001704 evaporation Methods 0.000 claims description 41
- 230000008020 evaporation Effects 0.000 claims description 38
- 229910052782 aluminium Inorganic materials 0.000 claims description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 238000010894 electron beam technology Methods 0.000 claims description 16
- 239000011888 foil Substances 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000011282 treatment Methods 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 7
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 4
- 230000031700 light absorption Effects 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 2
- 229910001882 dioxygen Inorganic materials 0.000 claims description 2
- 239000005022 packaging material Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 abstract description 3
- 229910016909 AlxOy Inorganic materials 0.000 abstract 1
- 230000004224 protection Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 150
- 239000013077 target material Substances 0.000 description 14
- 238000004544 sputter deposition Methods 0.000 description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 150000002739 metals Chemical class 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000000123 paper Substances 0.000 description 5
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000004922 lacquer Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229910052774 Proactinium Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000005026 oriented polypropylene Substances 0.000 description 2
- 238000005289 physical deposition Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000010944 silver (metal) Substances 0.000 description 2
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000011364 vaporized material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
-
- 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
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
- C23C14/081—Oxides of aluminium, magnesium or beryllium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
- C23C14/205—Metallic material, boron or silicon on organic substrates by cathodic sputtering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/562—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks for coating elongated substrates
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
-
- B42D2033/10—
-
- B42D2033/30—
-
- B42D2035/24—
Definitions
- the present invention relates to substrates which are equipped with optically perceptible security features and to methods for producing substrates equipped with optically perceptible security features and to the use of the substrates.
- EP 1 504 923 it is known from EP 1 504 923, for example, to provide substrates such as plastic films with security features.
- a PET substrate is exposed to a semitransparent adsorber layer, a dielectric layer and a reflective metal layer. From the coated substrates, portions of securities, such as banknotes, may be generated.
- a process for the production of a Fabry-Perot filter for use on decorative films has become known.
- a thin coating of three layers deposited on a substrate is described.
- Deposited on the substrate is a first opaque reflective layer of a base material, lying thereon an intermediate layer of the base material with another material and then thereon another partially transparent reflective layer of the base material.
- Object of the present invention is to overcome the disadvantages mentioned and to propose substrates with security features with new layer sequences and an improved manufacturing process for such security features.
- the layer sequence a) comprises a semitransparent layer of chromium which, together with the substrate, has an optical transparency of 30 to 55% in the case of a light wave.
- the semitransparent layer a) consists of chromium, occasionally with process-typical impurities.
- x is the number 2 and y is the number 3.
- the layer c) is, for example, a reflective layer comprising aluminum, titanium, vanadium, chromium, iron, cobalt, nickel, copper, rhodium, palladium, silver, tin, zinc, tungsten, platinum or gold or mixtures or alloys thereof, or stainless steel alloys contains or consists of.
- Aluminum is preferred.
- the layers arranged on the substrate a) the semitransparent layer of the abovementioned metals can have a thickness of 2 to 50 nm (nanometers), b) the layer of Al x O y , can have a thickness of 20 to 1000 nm, and c) the reflective layer of a metal may have a thickness of 20 to 200 nm.
- Optical transmission is understood to mean the transmittance of an incident radiation flux, in the present case light waves of the wavelength of 550 nm, which completely penetrates the substrate and the semitransparent layer.
- optical density is meant the perceptual logarithmically formulated opacity and thus a measure of the attenuation or blackening of a radiation, in the present case light of a wavelength of 550 nm.
- the layer sequence a) is the semi-transparent layer
- b is the layer of Al x Oy
- the substrate is advantageously a film of a plastic, which is in particular transparent or at least translucent.
- the substrate may also be only partially transparent or only partially translucent. However, the desired optical effect only becomes effective in the transparent or translucent areas.
- the substrate may contain one or more layers.
- it can be a polyester film, for example a polyethylene terephthalate film (PET), a polyamide film, eg an oriented polyamide film (OPA), a polyolefin film, eg an oriented polypropylene film (OPP) or a film or layer containing an acid-denatured polyolefin.
- PET polyethylene terephthalate film
- OPA oriented polyamide film
- OPP polyolefin film
- the base film may be two or more mutually adhesive-laminated, extrusion-laminated and / or hot calendered layers, resp.
- Adhesive-laminated layers or films can be processed with aqueous, solvent-based and / or solvent-free adhesives.
- the thickness of the substrate may be from 12 to 500 .mu.m, suitably from 15 to 250 .mu.m. Typical thicknesses of individual films are 12, 15, 20, 23 and 25 ⁇ m.
- the optional layer d) may be applied to the reflective layer (layer c) as at least one further layer. It may be a paint, a plastic layer, a plastic film, a plastic film composite, a metal foil, a paper, etc., or a combination of two or more of the materials. Material examples of plastic layers, plastic films and plastic film composites can be found in the material lists given for the substrates. The materials can be transparent, translucent or opaque.
- the lacquer may be an alkyd resin, epoxy resin, acrylic resin, polyester, polyurethane lacquer, a cellulosic lacquer, etc.
- the plastic layers may be extruded or laminated layers. Plastic films and composites as well as metal foils can be laminated or glued on.
- metal foils iron and non-ferrous metal foils such as foils of iron, steel, nickel, copper, etc. may be used.
- the metal foils have a thickness of, for example, 12 to 200 .mu.m, suitably 20 to 200 .mu.m, preferably 25 to 75 .mu.m and in particular 40 to 50 .mu.m. It is also possible to use composites of the cited plastics and the metal foils mentioned. Furthermore, papers, kraft papers or coated papers or combinations of papers with plastics and / or metal foils can be used.
- the said layers of metal and Al x Oy can be applied by physical deposition methods.
- physical deposition methods are vacuum evaporation methods and sputtering.
- the substrate in a vacuum chamber in a vacuum, as a single sheets and particularly useful of unwound from a roll, roll or coil, exposed to an atmosphere of substantially vaporized or chipped metal.
- the metal-containing vapor precipitates in a 0.1 to 1000 nm thick layer on at least one side of the substrate.
- the substrate coated with the metal can be rewound onto an opposite winding, roll or coil.
- the semitransparent layer a) is made of Ti, V, Cr, Fe, Co, Ni, Cu, Rh, Pa, Ag, Sn, Zn, W, Pt or Au or alloys thereof or mixtures thereof or stainless steel alloys.
- Cr and Cu are alone or in a mixture of the two metals and most preferably Cr.
- the starting materials are selected from substances containing or consisting of the above-mentioned element (s).
- the metal is placed in a vacuum chamber and evaporated by means of electron beam gun which is directed onto the target material, or sputtered by means of a sputtering cathode.
- the semitransparent layer a) preferably consists of chromium.
- the chromium is preferably evaporated in vacuo by means of an electron beam gun and then deposited on the substrate as the semitransparent layer.
- the target material is for example a plate of the metal to be evaporated.
- a mixture of metals is to be deposited, a mixture of the corresponding metals or multiple metal plates of the corresponding metals may be vaporized or sputtered.
- the vaporized or sputtered metal deposits on the surface of the substrate in the specified thickness.
- thicknesses of 2 to 20 nm are deposited.
- the thickness of the metal deposit can be u.a. about the passage speed of the metal foil and the strength of the electron beam, resp. the power of the sputtering cathode, control.
- the layer of metal c) may, for example, be composed of Al, Ti, V, Cr, Fe, Co, Ni, Cu, Rh, Pa, Ag, Sn, Zn, W, Pt or Au or alloys thereof or of mixtures thereof. see it.
- AI preferably, AI.
- the starting materials are selected from substances containing or consisting of the above-mentioned elements.
- the metal is placed in a vacuum chamber and vaporized by means of electron beam gun which is directed onto the target material, or preferably sputtered by means of a sputtering cathode.
- the target material is for example a plate of the metal to be evaporated.
- a mixture of the corresponding metals or multiple metal plates of the corresponding metals may be vaporized or sputtered.
- the vaporized or sputtered metal deposits on the surface of the substrate in the specified thickness.
- thicknesses of 20 to 200 nm are deposited.
- the thickness of the metal deposition can be, inter alia, on the flow rate of the metal foil and by the strength of the electron beam, respectively. the power of the sputtering cathode, control.
- the layer of Al x O y b) can be obtained or produced, for example, from aluminum, from aluminum alloys or from aluminum-containing compounds.
- oxygen-containing compounds such as Al 2 O 3
- oxygen or an oxygen-containing gas is introduced into the vacuum chamber, in particular directly into the evaporation and deposition area of the aluminum.
- the vapor phase elements or compounds may react to Al x O y and strike down on the surface of the layer a) already on the substrate.
- the previously evaporated aluminum can precipitate on the substrate and form the Al x O y immediately afterwards with the supplied oxygen molecules or ions.
- the layer of Al x O y can be in thicknesses of 20 be deposited to 1000 nm.
- the layer is advantageously transparent and the thickness applied may also depend on the wavelength of the light to be reflected. Depending on the wavelength of the incident and to be reflected light takes place in layer b) a gain or attenuation of the passage of light. Particularly preferred is a layer thickness of the layer b) of 300 to 800 nm, with a layer thickness of 450 to 550 nm is particularly preferred. Also advantageous is a thickness of the layer b), the ⁇ , ⁇ / 2 or ⁇ / 4 or an integer multiple thereof, wherein ⁇ means the wavelength of the light to be reflected.
- the layer structure on the substrate equipped according to the invention leads to color effects due to the incident and partially reflected light.
- layer thicknesses of Al x O y on the order of 20 to 1000 nm, and in particular in a range of 500 nm, are desired.
- a metal other than aluminum is used as a semitransparent metal layer, the achievable color palette can be extended.
- the substrate equipped according to the invention additionally has a perceptible pattern.
- the pattern may be any raster, such as a dot or line raster, any motif or motif sequence, characters, a font, or a letter or number sequence, etc.
- the pattern represents on the side of the substrate with the layer sequence a) the semitransparent layer, b) the layer of Al x O y, and c) the reflective layer, partially etched through the layers a), b) and c).
- the layer sequence a) the semitransparent layer On the side of the substrate on which the layer sequence a) the semitransparent layer, b) the layer of Al x O x , and c) the reflective layer is deposited, and may partially the layer sequence a), b) and c) in the form of a pattern are etched away.
- the pattern can be produced, for example, by coating, for example printing, on the free side of the layer c) with the negative of the pattern coated on the free side of the layer c) with the negative of the pattern on the free side of the layer c), and then the Substrate is treated with an etching solution such that the unprotected by the paint sites, the layers a), b) and c) are etched away and there only the substrate remains at the protected areas by the paint layer sequence a), b) and c ) remains intact.
- a sensitive lacquer can be applied over the entire surface of the layer c). For example, if the resist is light-sensitive, the substrate may be exposed to the pattern and the unexposed portions of the resist removed.
- the surface can be etched, wherein the no longer protected by the paint parts of the layers a, b) and c) are etched away.
- the etching may be acidic or alkaline, with an acid etching solution being preferred.
- the pattern may also be generated by the application of controlled energetic radiation, such as a laser beam, and the partial removal of the layers a), b) and c) by the intended pattern with the energetic radiation.
- the semitransparent metal layer were exposed to the outside atmosphere, there would be a risk of a chemical reaction, such as oxidation. As a result, the color effects can diminish or disappear.
- the double-sided coating prevents this.
- the outer, ie free, side of the reflective layer c) applied to the substrate, which is made of a metal can be protected from external influences by the optionally to be applied layer d) and also the mechanical strength can be increased.
- the thickness of the deposits from the vapor phase can be, inter alia, on the flow rate of the substrate and by the strength of the electron beam, resp. the power of the sputtering cathode, control.
- Particularly expedient proves to be a plasma pretreatment with, for example, argon (Ar), nitrogen (N 2 ), NH 3 , NO x (nitrogen oxides) and preferably by means of oxygen plasma, the substrate in the vacuum system.
- the pre-treatment can be carried out directly in the vacuum system before the first coating and occasionally before each coating treatment.
- the plasma pretreatment for a particularly good layer adhesion of the layers with each other and the layer on the substrate.
- the semitransparent layer of metal and the reflective layer of metal are preferably produced by sputtering and the Al x Oy by electron beam evaporation.
- Particularly preferred is a plasma pretreatment by means of oxygen plasma. More preferably, the semitransparent layer of chromium and the reflective layer of aluminum are produced by sputtering.
- the respective vapor is deposited on only the free side of the substrate which does not touch the coating roller.
- the present invention also relates to a method for producing substrates equipped with optically perceptible security features.
- a substrate is exposed to the coating treatments in at least one vacuum chamber under vacuum conditions at least two evaporation devices, the substrate by means of a first evaporation device with a) a semitransparent layer of titanium, vanadium, chromium, iron, cobalt, nickel, copper, rhodium, palladium, silver , Tin, zinc, tungsten, platinum or gold or alloys thereof or of mixtures thereof, ie coated, by means of a second evaporation b) an AI x Oy - coated layer, ie coated, and by a further evaporation method with c), a reflective layer of a metal, applied, ie coated, is.
- the substrate is subjected to the coating treatments of two evaporators in a vacuum chamber under vacuum conditions, the substrate being a first evaporator having a) the semitransparent layer of titanium, vanadium, chromium, iron, cobalt, nickel, copper, rhodium, palladium , Silver, tin, zinc, tungsten, platinum or gold or alloys thereof or mixtures thereof, acted upon by a second evaporation device with b) the Al x Oy - layer and in a further vacuum chamber under vacuum conditions by a further evaporation process with the other Layer c), the reflective layer of a metal, is applied.
- the substrate being a first evaporator having a) the semitransparent layer of titanium, vanadium, chromium, iron, cobalt, nickel, copper, rhodium, palladium , Silver, tin, zinc, tungsten, platinum or gold or alloys thereof or mixtures thereof, acted upon by a second evaporation device with
- the substrate is subjected to the coating treatments of two evaporation devices in a vacuum chamber under vacuum conditions, the substrate being heated by means of a first evaporation device comprising a), the semitransparent layer of titanium, vanadium, chromium, iron, cobalt, nickel, copper, Rhodium, palladium, silver,
- the substrate acted upon by the layer a) and the layer b) in the further evaporation process in the vacuum chamber under vacuum conditions in at least one of the evaporation devices with the layer c), the reflective layer of a metal is applied.
- a particularly preferred method is characterized in that the substrate is subjected to the coating treatments in at least one vacuum chamber under vacuum. At least two evaporation devices are exposed to the conditions in which the substrate is subjected to a) a semitransparent layer of chromium in a first evaporation device by evaporation of chromium by electron beam, so that the optical transparency of the semitransparent layer, measured or determined together with the substrate, is maintained in a second evaporation device by evaporation of aluminum by means of electron beam with the addition of oxygen gas with b) an Al x Oy layer and by another evaporation method, by means of electron beam or thermally, with aluminum, ruthenium or silver up to an optical density of greater than 0.7 at a wavelength of 550 nm with c) a reflective layer is applied.
- the substrate may also be acted upon on one side by the a) semi-transparent layer, b) the Al x O y layer, and c) the reflective layer, and finally on the layer c) by a layer d), preferably a plastic layer , a plastic film, a plastic film composite, a metal foil, a paper or a combination of two or more of the materials, for example by laminating, molding, gluing, etc., are applied.
- a layer d preferably a plastic layer , a plastic film, a plastic film composite, a metal foil, a paper or a combination of two or more of the materials, for example by laminating, molding, gluing, etc.
- present, according to the invention equipped, resp. coated substrates are, for example, as indications of origin, tamper evidence, tamper evident, markings, etc.
- the equipped substrates can packaging, packaging materials, seals, banderoles, closures, securities, banknotes, identity cards, lottery tickets, access cards, tickets, prepaid cards, driving and air tickets, etc Processed or can be attached to such objects. Therefore, the present invention also relates to the use of the substrates for the stated purposes, an application for banknotes being preferred.
- Figure 1 shows a section through a possible embodiment of the equipped with visually perceptible security features substrate.
- FIG. 2 shows a section through a variant of a device for producing the substrates equipped according to the invention.
- the substrate 6 shown in FIG. 1 has the following superimposed layers in section:
- the equipped with the security features substrate (6) contains a substrate (1), such as a transparent or translucent plastic layer, respectively.
- a substrate (1) such as a transparent or translucent plastic layer, respectively.
- - Foil. A semitransparent layer a) of a metal (2) from the series titan, vanadium, chromium, iron, cobalt, nickel, copper, rhodium, palladium, silver, tin, zinc, tungsten, platinum or gold or alloys thereof or aus Mixtures thereof, a layer b) of Al x O y (3), a reflective metal layer c) (4) and occasionally a further layer d) (5).
- the further layer (5) can represent a functional layer which can influence the properties of the overlying layers, for example with regard to strength, bendability, or acts as a separating or adhering intermediate layer to underlying further materials.
- FIG. 2 shows an example of a unit for producing the substrates according to the invention. It is an evacuable space, the vacuum chamber (10). Within the vacuum chamber (10), a supply roll (12) or coil with the substrate (1 1) is arranged. The substrate (11) is continuously unwound and fed to a chill roll (13). At the cooling roller (13), the plasma treatment by means of the corresponding device (14). The plasma-treated substrate (11) is then, still on the circumference of the cooling roller 13, which is also the coating roller, located, a sputtering treatment by means of a sputtering device (15) for Coating with the semitransparent layer a) supplied.
- a sputtering treatment by means of a sputtering device (15) for Coating with the semitransparent layer a) supplied.
- an electron beam gun is advantageously used for evaporation.
- the once-coated substrate (11) leaves the chamber part (16) and is fed to a chamber part (17) separated by chamber walls.
- the substrate (11) also runs in the chamber part (17) via a cooling roller (18), resp. Coating roll.
- an electron beam crown (15) whose beam is directed to a supply of target material (19) and thereby the target material (19) evaporates.
- the target material is usually as ramming mass, debris or as a metal plate on a displacement device.
- the electron beam scans, ie it oscillates over the target material and vaporizes it in layers.
- the vaporized material strikes the substrate (11), which is acted upon by the Al x 0y layer.
- the target material (19) may be, for example, Al 2 O 3 or a mixture of aluminum and an oxygen carrier, such as a solid compound.
- the target material (19) may also be aluminum. In the latter case, oxygen must be supplied. This can be done by a gas supply (20). By the gas supply (20) under, over or stoichiometric amounts of oxygen in the form of oxygen-containing gases or oxygen in the chamber part (17) are passed. Expediently, the gas supply (20) is located in the region of the cloud of vapor between the target material (19) and the cooling roller (18). The now doubly coated substrate (11) now leaves the chamber part (17) to finally be wound up on the take-up roll (21).
- the vacuum chamber (10) is vented and the take-up roll (21) can be removed from the vacuum chamber (10) and placed in the same vacuum chamber at the location of the supply roll (12) and, after evacuation and, subsequently, sputtering the now twice coated substrate (11) with the other, the reflective layer c), are applied. Thereafter, the vacuum chamber (10) vented and that with the security features coated substrate (11) are removed.
- the substrate can also be removed for coating with the reflective layer c) from a metal of the first vacuum chamber and fed to another vacuum chamber and coated there.
- the substrate (11) may be unwound from the supply roll (12) and coated with the layers a) and b).
- the twice-coated substrate (11) is wound on the take-up roll (21) to then reverse the running direction of the twice-coated substrate (11).
- an Al x O y coating can take place in the chamber part (17), wherein the layer b) is further reinforced.
- the metal to be vaporized for the layer a) has been replaced by another metal, namely that of the layer c), or a sputtering device arranged in parallel has been activated and the reflecting one becomes Layer of metal c) in the same manner as layer a), but usually in a considerable greater thickness on the layer b), the Al x O y , deposited and then the substrate (11) on the supply roll (12) is wound up again.
- the vacuum chamber (10) is vented and the coated with the security features substrate (11).
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- Business, Economics & Management (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH15162006 | 2006-09-22 | ||
| CH15762006 | 2006-10-03 | ||
| CH1192007 | 2007-01-25 | ||
| PCT/EP2007/006285 WO2008034478A1 (de) | 2006-09-22 | 2007-07-16 | Mit sicherheitsmerkmalen ausgerüstete substrate und verfahren zu deren herstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2067063A1 true EP2067063A1 (de) | 2009-06-10 |
Family
ID=38664465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07786087A Withdrawn EP2067063A1 (de) | 2006-09-22 | 2007-07-16 | Mit sicherheitsmerkmalen ausgerüstete substrate und verfahren zu deren herstellung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2067063A1 (de) |
| WO (1) | WO2008034478A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2406152C1 (ru) * | 2009-04-28 | 2010-12-10 | Общество С Ограниченной Ответственностью "Новые Энергетические Технологии" | Защитный элемент для проверки подлинности объекта защиты и способ проверки подлинности |
| CN102501500B (zh) * | 2011-12-09 | 2014-09-24 | 中钞特种防伪科技有限公司 | 一种光学防伪元件 |
| CN110597422B (zh) * | 2019-09-02 | 2023-01-06 | 海宁光圣晶体材料有限公司 | 铝金属网格电容触控薄膜及其制作方法 |
| AT523060B1 (de) * | 2020-05-12 | 2021-05-15 | Hueck Folien Gmbh | Sicherheitselement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059245A (en) * | 1979-12-28 | 1991-10-22 | Flex Products, Inc. | Ink incorporating optically variable thin film flakes |
| US4779898A (en) * | 1986-11-21 | 1988-10-25 | Optical Coating Laboratory, Inc. | Thin film optically variable article and method having gold to green color shift for currency authentication |
| US5437931A (en) * | 1993-10-20 | 1995-08-01 | Industrial Technology Research Institute | Optically variable multilayer film and optically variable pigment obtained therefrom |
| ID23974A (id) * | 1997-05-21 | 2000-06-14 | Alusuisse Tech & Man Ltd | Bentuk-bentuk kemasan dan pembantu kemasan |
| DE19834734C2 (de) * | 1998-07-31 | 2002-07-18 | Fraunhofer Ges Forschung | Bauteil mit einer Effektoberfläche und Verfahren zu dessen Herstellung |
| CN1942744A (zh) * | 2004-03-01 | 2007-04-04 | 应用材料股份有限两合公司 | 具有法布里-珀罗滤波器的基底和将滤波器涂覆在基底上的方法 |
-
2007
- 2007-07-16 WO PCT/EP2007/006285 patent/WO2008034478A1/de not_active Ceased
- 2007-07-16 EP EP07786087A patent/EP2067063A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008034478A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008034478A1 (de) | 2008-03-27 |
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