EP3288770A1 - Sicherheitselement mit mehrschichtstruktur - Google Patents
Sicherheitselement mit mehrschichtstrukturInfo
- Publication number
- EP3288770A1 EP3288770A1 EP16716825.1A EP16716825A EP3288770A1 EP 3288770 A1 EP3288770 A1 EP 3288770A1 EP 16716825 A EP16716825 A EP 16716825A EP 3288770 A1 EP3288770 A1 EP 3288770A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- security element
- interference
- color
- security
- 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.)
- Granted
Links
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
-
- 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
-
- 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
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- 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
-
- 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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
-
- 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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/465—Associating two or more layers using chemicals or adhesives
Definitions
- the invention relates to a security element for security papers, valuable documents or the like, which consists of an interference-capable, multilayer construction, wherein the interference-capable, multi-layered structure comprises a reflection layer, a dielectric layer and a partially transparent layer, wherein the dielectric layer between the reflective layer and the partially permeable layer is arranged.
- a generic security element is for example from the
- the viewer perceives a certain color, which changes as the viewing angle changes.
- the cause of the color shift is an interference effect between the light rays reflected from the surface of the outer partially transmissive layer and the light rays which pass through the outer partially transmissive and middle dielectric layers and are reflected back from the reflection layer to the partially transmissive layer.
- the light beams are then either transmitted to the outside or reflected again, so that in this case the light beams are repeatedly reflected back and forth between the reflection layer and the partially transparent layer.
- Thin film layer have passed, a longer path than the reflected on the surface of the thin-film layer light beams, so that they are out of phase with them, if they interfere with them. If the light rays incident on the thin film layer encounter the thin film layer at different angles of incidence, the light beam is in the Thin-film layer traveled path of light rays of different lengths. This difference results from the path difference of the beams reflected multiple times within the thin film layer due to the angle of incidence. Therefore, the phase angle of the interfering light beams is different depending on the angle of incidence, so that depending on the angle of incidence different colors or hues of the resulting, perceived by the observer light beam result, a so-called color shift effect.
- such a generic security element is also referred to as a thin film layer interference layer structure or as a color shift element.
- the invention is therefore the object of developing a generic security element such that the disadvantages of the prior art is eliminated and the protection against counterfeiting is further increased.
- the reflection layer of the interference-capable, multilayer structure is formed by a color layer or a further multilayer structure, wherein the color layer and the multilayer structure are configured such that they show a metallic hue in reflected light and a colorful hue in transmitted light.
- a color layer with a metallic hue a color layer is referred to in the context of this invention, which has a metallic reflective surface with a metal-colored hue, which preferably golden or
- a color layer with a colored hue is a color layer which has a single- or multi-colored surface, preferably a monochrome blue, a monochrome green or a red one.
- Transmitted light is present when the illumination of an object takes place from one side and the viewing from the other side.
- Incident light is when the illumination and viewing are from the same side of an object.
- the color layer contains platelet-shaped metallic particles whose longest edge length is 15 nm to 1000 nm and whose thickness is 2 nm to 100 nm, so that the color layer has a golden hue in light and a blue hue in transmitted light Color tone shows.
- the platelet-shaped metallic particles preferably have a longest edge length of 15 nm to 600 nm and particularly preferably 20 nm to 500 nm and a thickness of 2 nm to 40 nm and particularly preferably 4 nm to 30 nm.
- a color layer is For example, from WO 2011/064162 A2 and is also referred to as gold-blue color.
- the reflection layer is formed by a further multilayer structure
- the further multilayer structure has at least two semitransparent mirror layers and at least one dielectric layer arranged between the at least two mirror layers, as is known from DE 10 2009 058 243 A1, for example the security element consists of an interference-capable, multi-layered construction of at least five layers arranged one above the other.
- the reflection layer exhibits a resonance with a half-value width of 70 nm to 150 nm when measuring the transmission of unpolarized light in the blue wavelength range from 420 nm to 490 nm.
- the resonance of the reflection layer is the only resonance in the visible range.
- the at least two semitransparent mirror layers of the reflection layer are preferably formed from:
- the dielectric spacer layer with a thickness h and a refractive index v satisfies the relation 120 nm ⁇ h v ⁇ 190 nm or
- the dielectric spacer layer having a thickness h and a refractive index v satisfies the relation 120 nm ⁇ h -v ⁇ 170 nm or 340 nm ⁇ h v ⁇ 400 nm.
- the invention thus replaces the reflection layer of a color shift element known from the prior art by a color layer with platelet color.
- incident light both the color layer with platelet-shaped metallic particles and the further multi-layered structure show a golden hue, thus reflecting the incident light and acting like a reflection layer.
- the security element according to the invention in reflected light shows the color-shifting effect known from the prior art.
- transmitted light on the other hand, both the color layer with platelet-shaped metallic particles and the further multi-layered structure show a blue hue and do not reflect the incident light at all or only insignificantly.
- the security element according to the invention thus shows a blue hue and no color shift effect.
- at least one of the dielectric layers of the interference-capable multilayer structure consists of silicon dioxide (S1O2).
- the partially transparent layer of the interference-capable, multilayer structure preferably consists at least of chromium and / or nickel.
- a dielectric layer may consist of a transparent printing layer having a constant thickness.
- the invention further relates to a see-through security element for security papers, documents of value and the like, with a carrier and a security element according to the invention applied to the carrier.
- a carrier is in particular a transparent or translucent plastic film.
- a lacquer layer can be arranged between the security element and the carrier, which preferably consists of an embossing lacquer.
- an embossing lacquer may be, for example, a UV lacquer, ie a lacquer which cures under the action of ultraviolet light, or a thermoplastic embossing lacquer.
- embossing lacquer preferably diffractive structures, holograms or micromirrors are embossed.
- the thickness of this paint layer is 1 ⁇ to 12 ⁇ , preferably 2 ⁇ to 7 ⁇ .
- Translucency in the sense of this invention means that an object, such as the substrate or the plastic film, can transmit incident light in a certain proportion. If light strikes one side of the object, a certain portion of the light is transmitted to the other side of the object and exits there again. The greater the percentage of transmitted light, with respect to the incident light, the more translucent the object is. If the percentage is at least 90%, i. If the object allows the incident light to pass through almost unattenuated, as in the case of a window, the object is called transparent.
- a security paper, document of value or the like is particularly preferably made of a substrate made of paper from cotton fibers, as used for example for banknotes, or from other natural fibers or from synthetic fibers or a mixture of natural and synthetic fibers, or from at least one plastic film.
- the substrate consists of a combination of at least two superimposed and interconnected different substrates, a so-called hybrid.
- the substrate is made of, for example, a combination of plastic film-paper plastic film, ie, a paper substrate is covered on both sides by a plastic film, or a combination of paper-plastic film paper, ie, a plastic film substrate on each of its surfaces covered by paper on both sides.
- the weight of the substrate used are given, for example, in the document DE 102 43 653 A9, the statements of which are fully incorporated in this application in this regard.
- the document DE 102 43 653 A9 states in particular that the paper layer usually has a weight of 50 g / m 2 to 100 g / m 2 , preferably from 80 g / m 2 to 90 g / m 2 .
- any other suitable weight can be used.
- Security papers, documents of value or the like in which a security element according to the invention can be used are, in particular, banknotes, shares, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are subject to counterfeiting, such as passports and other identity documents, as well as cards such as For example, credit or debit cards whose card body has at least one layer of security paper and also product security elements, such as labels, seals, packaging and the like.
- the simplified term value document includes all the above materials, documents and product safeguards.
- the terms "front side” or “back side” of a substrate, security paper or value document are relative terms, which may also be referred to as “the one” and “the opposite” side and which represent the overwhelming portion of the overall surface of the substrate, security paper or value document form. Specifically, these terms do not include the side surfaces of a substrate, security paper or value document that are negligibly small and usually not included in the thickness of a substrate or value document, which is only about a millimeter in the case of card bodies or fractions of a millimeter for banknotes Security elements or coatings are or can be provided. In particular, no see-through effects can be achieved with the side surfaces.
- the security element according to the invention shows an observer in incident light and in transmitted light information.
- Information in the sense of this invention is a pattern-shaped and visually perceptible coating. This can, for example, form a graphic image, an image, a number, a letter, a text or other characters.
- the information consists of positive and / or negative motives.
- a positive motif in this case a motif element is itself applied to the substrate, whereas in the case of a negative motif the area surrounding the motif element is applied to the substrate.
- a positive subject is a letter printed in dark color on the light substrate.
- a negative motif is, for example, a surface applied in a dark color to the substrate, which has an unprinted area in the form of a letter within the area.
- each in side view schematically show:
- FIG. 1 shows a security element according to the invention whose reflection layer consists of a color layer
- Fig. 2 shows a security element according to the invention whose reflection layer consists of a further multilayer structure
- Fig. 3 shows the security element according to the invention of Fig. 1, which is fixed with a lacquer layer on a support.
- the reflection layer 1 shows a side view of a security element according to the invention with a partially transparent layer 3 and a reflection layer 1, between which a dielectric layer 2 is arranged. These three layers together form a thin film layer interference layer structure.
- the reflection layer 1 consists of a color layer which contains platelet-shaped metallic particles whose longest edge length is 15 nm to 1000 nm and whose thickness is 2 nm to 100 nm, so that this color layer shows a golden hue in light and a blue hue in transmitted light.
- the viewer 9 sees in incident light, i. with a lighting 11 from the front side 7, a color-tilting effect, in which the color of the security element, for example, changes from purple to green when the security element is tilted.
- transmitted light i. E.
- the color-shift effect disappears and the viewer 9 sees the security element in a blue color.
- FIG. 2 shows a side view of a security element according to the invention, in which the reflection layer 1, in contrast to the security element from FIG. 1, consists of a further multilayer structure comprising two semitransparent mirror layers 4 and 6 and at least one dielectric layer 5 arranged between the two mirror layers ,
- the two semitransparent mirror layers 4 and 6 preferably each consist of a thin layer of aluminum and the dielectric layer 5 of S1O2.
- the incident and reflected light result in the same effect on both the front side 7 and the rear side 8 as for the observer from FIG. 1.
- FIG. 3 shows the security element according to the invention from FIG. 1, which is fastened with a lacquer layer 15 on a carrier 16.
- the lacquer layer 15 here preferably consists of a UV lacquer, the support 16 preferably made of a plastic film.
- the security element with the reflection layer 1 is fixed on the carrier 16 via the lacquer layer 15 and, according to FIG. 3 b, with the partially permeable layer 3.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Credit Cards Or The Like (AREA)
- Laminated Bodies (AREA)
- Optical Filters (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015005446.5A DE102015005446A1 (de) | 2015-04-28 | 2015-04-28 | Sicherheitselement mit Mehrschichtstruktur |
| PCT/EP2016/000597 WO2016173696A1 (de) | 2015-04-28 | 2016-04-11 | Sicherheitselement mit mehrschichtstruktur |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3288770A1 true EP3288770A1 (de) | 2018-03-07 |
| EP3288770B1 EP3288770B1 (de) | 2019-06-26 |
| EP3288770B2 EP3288770B2 (de) | 2024-08-21 |
Family
ID=55755558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16716825.1A Active EP3288770B2 (de) | 2015-04-28 | 2016-04-11 | Sicherheitselement mit mehrschichtstruktur |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3288770B2 (de) |
| CN (1) | CN107531082B (de) |
| DE (1) | DE102015005446A1 (de) |
| WO (1) | WO2016173696A1 (de) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018210597A1 (en) | 2017-05-15 | 2018-11-22 | Basf Se | Process for the preparation of metallic nano-particle layers and their use for decorative or security elements |
| CN110945084B (zh) | 2017-07-20 | 2022-05-10 | 巴斯夫欧洲公司 | 膦酸酯表面官能化的二氧化钛纳米颗粒 |
| WO2019020682A1 (en) | 2017-07-28 | 2019-01-31 | Basf Se | PROCESS FOR THE PREPARATION OF METAL NANOPARTICLE LAYERS AND THEIR USE FOR DECORATIVE OR SECURITY ELEMENTS |
| MX2021004736A (es) | 2018-10-25 | 2021-06-04 | Basf Se | Composiciones, que comprenden nanoplaquetas de plata. |
| CN113302064A (zh) | 2019-01-21 | 2021-08-24 | 巴斯夫欧洲公司 | 安全元件 |
| WO2020156858A1 (en) | 2019-01-29 | 2020-08-06 | Basf Se | Security element |
| CN113811409A (zh) | 2019-05-06 | 2021-12-17 | 巴斯夫欧洲公司 | 包含银纳米片的组合物 |
| CN114401927A (zh) | 2019-09-17 | 2022-04-26 | 巴斯夫欧洲公司 | 金属氧化物纳米颗粒 |
| WO2021213942A1 (en) | 2020-04-23 | 2021-10-28 | Basf Se | Compositions, comprising platelet-shaped transition metal particles |
| WO2022038161A1 (en) | 2020-08-21 | 2022-02-24 | Basf Se | Uv-curable coatings having high refractive index |
| DE102020007728A1 (de) | 2020-12-17 | 2022-06-23 | Giesecke+Devrient Currency Technology Gmbh | Datenträger mit Verbundsubstrat mit einem in einem Durchsichtsbereich angeordneten Sicherheitselement |
| EP4288229A1 (de) | 2021-02-03 | 2023-12-13 | Basf Se | Zusammensetzungen mit silbernanoplättchen |
| CN115230277A (zh) * | 2021-04-25 | 2022-10-25 | 中钞特种防伪科技有限公司 | 薄膜元件、透明防伪元件、及数据载体 |
| CA3218468A1 (en) | 2021-05-12 | 2022-11-17 | Basf Se | Compositions, comprising platelet-shaped transition metal particles |
| EP4423176A1 (de) | 2021-10-26 | 2024-09-04 | Basf Se | Verfahren zur herstellung von interferenzelementen |
| EP4234641A1 (de) | 2022-02-25 | 2023-08-30 | Basf Se | Zusammensetzungen mit modifizierten titandioxid-nanopartikeln und deren verwendung |
| EP4555021B1 (de) | 2022-07-11 | 2026-05-13 | Basf Se | Uv-härtbare beschichtungen mit hohem brechungsindex |
| WO2024231418A1 (en) | 2023-05-08 | 2024-11-14 | Basf Se | Compositions, comprising silver nanoplatelets |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761959B1 (en) † | 1999-07-08 | 2004-07-13 | Flex Products, Inc. | Diffractive surfaces with color shifting backgrounds |
| CN1666888B (zh) † | 2000-01-21 | 2011-12-14 | 光学涂层实验公司 | 光学可变防伪图样 |
| DE10243653A1 (de) | 2002-09-19 | 2004-04-01 | Giesecke & Devrient Gmbh | Sicherheitspapier |
| US7161738B2 (en) † | 2003-08-07 | 2007-01-09 | Agra Vadeko Inc. | Secure document of value and method of manufacturing same |
| DE10349000A1 (de) | 2003-10-17 | 2005-05-19 | Giesecke & Devrient Gmbh | Sicherheitselement mit Farbkippeffekt |
| DE102004022080A1 (de) | 2004-05-05 | 2005-11-24 | Giesecke & Devrient Gmbh | Wertdokument mit visuell erkennbaren Kennzeichnungen |
| ES2353397T3 (es) * | 2005-01-14 | 2011-03-01 | Cabot Corporation | Dispositivo de seguridad, su uso, y procesos para producirlos. |
| AU2006202315B2 (en) † | 2005-06-17 | 2011-01-27 | Viavi Solutions Inc. | Covert security coating |
| GB0720550D0 (en) * | 2007-10-19 | 2007-11-28 | Rue De Int Ltd | Photonic crystal security device multiple optical effects |
| DE102008028187A1 (de) | 2008-06-12 | 2009-12-17 | Giesecke & Devrient Gmbh | Sicherheitselement mit optisch variablem Element. |
| DE102009041583A1 (de) † | 2009-09-15 | 2011-03-17 | Giesecke & Devrient Gmbh | Dünnschichtelement mit Interferenzschichtaufbau |
| JP6164845B2 (ja) | 2009-11-27 | 2017-07-19 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | セキュリティ要素及びホログラムのための被覆組成物 |
| DE102009058243A1 (de) | 2009-12-14 | 2011-06-16 | Giesecke & Devrient Gmbh | Dünnschichtelement mit Mehrschichtstruktur |
| DE102012018434A1 (de) * | 2012-09-18 | 2014-03-20 | Giesecke & Devrient Gmbh | Optisch variables Sicherheitselement mit zusätzlichem Auf-/Durchsichtseffekt |
| MX373619B (es) † | 2013-05-21 | 2020-04-20 | Basf Se | Elementos de seguridad y método para su fabricación. |
-
2015
- 2015-04-28 DE DE102015005446.5A patent/DE102015005446A1/de not_active Withdrawn
-
2016
- 2016-04-11 WO PCT/EP2016/000597 patent/WO2016173696A1/de not_active Ceased
- 2016-04-11 EP EP16716825.1A patent/EP3288770B2/de active Active
- 2016-04-11 CN CN201680022487.0A patent/CN107531082B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015005446A1 (de) | 2016-11-03 |
| CN107531082A (zh) | 2018-01-02 |
| EP3288770B1 (de) | 2019-06-26 |
| CN107531082B (zh) | 2019-06-25 |
| WO2016173696A1 (de) | 2016-11-03 |
| EP3288770B2 (de) | 2024-08-21 |
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