• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    method for the manufacture of a multilayer data storage medium and data storage medium the method is for the manufacture of a multilayer data storage medium, which has a first layer made of plastic, which has one side top, on which an opaque layer covering that upper side is laid, for example a metallic layer. the data storage medium has a second layer made of plastic which is arranged over the first layer and is at least transparent at least in a partial section of the metallic layer. the metallic layer is partly worn with a laser so that the metallic layer has at least one opening. preferably the metallic layer is laminated between the first and the second plastic layer.
    公开号:BR112013018247B1
    申请号:R112013018247-4
    申请日:2012-01-13
    公开日:2021-03-23
    发明作者:Stefan Egli；Heidi Widmer Gomres
    申请人:Gemalto Ag；
    IPC主号:
    专利说明:

    [0001] [0001] The invention relates to a method according to the general concept of claim 1.
    [0002] [0002] To protect storage media, for example, identity cards, passports, driver's licenses, bank notes etc. with personalized data, multiple security features are employed. The most diverse security features are known in the state of the art to protect the raw card without personalized data. Often, however, it occurs in such a way that counterfeiters do not falsify a complete card, but, for example, in the case of a stolen card, personalized data (photo, date of birth, signature, full name, etc.) are changed or exchanged . That is why protecting such personalized data is so important. Techniques known in the state of the art to protect such data are, for example, the customization of a second image in a lens structure so that the image is visible only from a certain angle of observation. Another possibility of a second image is the insertion of a reticular image on the card, in which the card is perforated. These manufacturing methods are relatively expensive and require special alignments in the manufacture of the card (lens structure) or special machines for the insertion of the second image. The present invention shows a way in which customization can be protected in a simple way without additional machines. State of the art
    [0003] [0003] Patent document EP 1691 989 Bl discloses a data storage medium, which has a metallic layer, which is arranged between two translucent cover layers (less than 10% transparency). Through the ablation of the metallic layer by means of a laser beam, a "watermark effect" should occur.
    [0004] [0004] Patent document EP 2 109 014 AI describes a so-called Overlay made of laser-stamped polycarbonate with a holographic layer on one side. The holographic layer can be metallized and partially ablated with a laser.
    [0005] [0005] The patent document WO 2009/139800 describes a security document with a metallized sheet, which is laminated along its entire length between transparent layers. A large part of the sheet is altered / stamped to form the background of the card. A leaf window is left unchanged. In this window after preparing the card by means of laser ablation, an image is inserted, which is visible from the front and back sides of the card.
    [0006] [0006] Patent document EP 0 420 261 relates to a method for the manufacture of a series of data storage media with holograms, in which the holograms are individualized through partial destruction or alteration of the diffraction structures. Illustration of the invention
    [0007] [0007] It is the task of the invention to create a method for the manufacture of a data storage medium, which is even better protected against unauthorized changes. The data storage medium must be manufactured, but at a low cost. The task is solved through claim 1.
    [0008] [0008] The invention relates in particular to a multilayer data storage medium made of thermoplastic material (for example, polycarbonate, PVC, PET-G etc.). A thin layer, preferably metallized, is placed in one of the layers according to an improvement of the invention. This metallized layer can be vacuum metallized, for example, by hot stamping or laminated together with a backing layer (for example, PET) between two layers of the data storage medium. The metallized layer is advantageously thinner than 4 pm, ideally thinner than 1 pm. If it is laminated together with a support layer, the support should be thicker than 50 pm, ideally ca. 20 pm or thinner. The metallized layer may contain holographic diffraction structures. The metallic layer is composed, for example, of aluminum, but other metals, such as titanium, can also be used. Techniques for laying the metallic layer on a sheet of thermoplastic material are known to the person skilled in the art. The sheet of thermoplastic material is advantageously thicker than 50 pm, ideally 100 pm or thicker.
    [0009] [0009] The layer with the partially placed metallic layer is then laminated together with the other layers of the cards forming a body of the card. In this case, the layer is covered with the metal placed on at least one other transparent layer. The layer, on which the metal is placed, can be both transparent and opaque.
    [0010] [0010] In the case of personalization of the card, that is, in the case of the description of the card with the cardholder data, each metal is partially ablated by laser, that is, evaporated. At the points where the laser falls on the metallic layer, the metallic foil is evaporated and a hole is formed in the metal. Therefore, text or reticular images can be written on the metal sheet with the laser. For this process, the same type of laser can be used which is also used for personalization known in the state of the art of data storage media (laser marking on blackening). However, it is also possible to employ a laser with a different wavelength.
    [0011] [0011] In the case of evaporation of the metallic layer it is visible through the gaps that are formed in the metallic sheet, the sheet under the metallic layer. Depending on whether that sheet is transparent or opaque, the image that forms in the metallic layer in the transparent view (in the case of transparent sheet) or in the top view (in the case of opaque sheet) will be ideally visible. Due to the reflection behavior of the metallic layer, the image can be identified in top view according to the viewing angle as "positive" (dark) or "" negative "(light).
    [0012] [0012] According to an improvement of the invention, the sheet is stamped before the insertion of the metallic layer in a color, so that the color after the ablation of the metallic layer is visible through the gaps in the metallic layer and results in a special effect.
    [0013] [0013] According to an improvement of the invention the metallic layer is placed on or in a transparent window in the data storage medium so that the ablated image is visible in the transparent view, the rest of the data storage medium, however features an opaque core layer.
    [0014] [0014] According to an improvement of the invention, instead of a metallic layer, a thin opaque plastic layer with a special additive is used, and this additive alters the opaque plastic layer in such a way that it becomes transparent or at least translucent. The additive is, for example, a pigment that is destroyed by laser irradiation. Such pigments are known to the person skilled in the art. Instead of a pigmented plastic, a partially crystalline opaque plastic can be used, in which through the insertion of temperature the laser irradiation transfers macromolecules arranged in crystallites to an amorphous and transparent structure.
    [0015] [0015] The opaque plastic layer can be inserted, for example, as a co-extruded sheet or also as a separate sheet using known techniques. Brief description of the drawings
    [0016] [0016] Examples of embodiments of the invention are clarified in more detail based on the drawing, where:
    [0017] [0017] Figure 1 schematically shows a top view over a data storage medium according to the invention;
    [0018] [0018] Figure 2 shows a cross section through a data storage medium according to the invention;
    [0019] [0019] Figure 3 shows a cross section through a data storage medium according to the invention; according to a variant; and
    [0020] [0020] Figure 4 shows a cross section through a data storage medium according to another variant. Description of preferred embodiments
    [0021] [0021] Figure 1 shows a data storage medium 1, which according to figure 2 has an opaque core sheet 7, a lower transparent cover sheet 8 as well as an upper transparent cover sheet 6. On one side At the top 14 of the core sheet 7, a metallic layer is placed, for example, vacuum metallized or hot stamped. A metallic layer is then understood to mean a metallic layer or a metallic layer. Such layers are known in themselves. They are relatively thin and have, for example, a thickness of 4 micrometers, preferably less than 1 micrometer. The foil can also be designed as a hologram. The top cover sheet 6, the core sheet 7 and the bottom cover sheet 8 are joined together in a manner known as lamination. The metallic layer 5 is correspondingly between the core sheet 7 and the cover sheet 6. Through a laser device the metallic layer is transported in such a way that, for example, the second ablated image 3 shown in figure 1 and of the second shaken text. These are preferably formed by the opening in the metallic layer 5. Through these openings the opaque core sheet is visible. Before applying the metallic layer, the opaque core sheet can be stamped on or below the metallic layer section. The second image 3 and the second text 4 can be seen correspondingly in a color tone. The second text 4 appears, for example, to be blue or red.
    [0022] [0022] The data storage medium, according to figure 3 has a core sheet 7 ', which has a transparent sheet 9, on which the metallic layer 5' is applied, for example, it is vacuum metallized. The ablated sections in this case can be seen from both sides, that is, in figure 3 above through the cover sheet 6 and below through the cover sheet 8.
    [0023] 1. Meio de armazenamento de dados 2. Folha metálica 3. Segunda imagem ablada 4. Segundo texto ablado 5. Camada metálica 6. Folha de cobertura 7. Folha de núcleo opaca 8. Folha de cobertura transparente 9. Folha transparente 10. Primeira folha metálica 11. Segunda folha metálica 12. Folha de núcleo 13. Folha transparente 14. Lado superior [0023] Figure 4 shows a data storage medium Γ, which has a core sheet 12 which has a transparent sheet 13, which has a first metallic layer 10 and a second metallic layer 11. These metallic layers 10 and 11 can also be vacuum metallized or applied by hot stamping. These two metal sheets 10 and 11 have a distance between them, for example, at least 50 micrometers or preferably 100 or more micrometers. In the case of laser ablation, the data storage medium 1 ', as suggested, is placed in an oblique direction at a pre-established angle A. The ablation is carried out on the two metallic layers 10 and 11. If it is not possible due to the intensity of the laser, to ablate the two metallic layers 10 and 11 on the same side of the card, two adjustment methods for the laser on the back and on the front side of the data storage medium 1 '. In this case, the closest metallic layer 10 or 11 is processed respectively. By matching the data storage medium 1 'before laser processing, the laser etched image is visible in the transparent view only under the corresponding angle. It is also possible to laser etch the two different images with different angles and thus obtain, in the observation from different angles, a latent image effect between the two images or the two metallic layers 10 and 11. The core layer 12 can be fixed , as we can see, between two layers or cover sheets and be specially laminated. Reference signal list 1. Data storage medium 2. Metallic foil 3. Second ablated image 4. Second text deleted 5. Metallic layer 6. Cover sheet 7. Opaque core sheet 8. Transparent cover sheet 9. Transparent sheet 10. First metallic foil 11. Second metallic sheet 12. Core sheet 13. Transparent sheet 14. Top side
    权利要求:
    Claims (24)
    [0001]
    Method for the manufacture of a multilayer data storage medium, said data storage medium (1) comprising: - a first layer (7) of plastic, comprising an upper side, - an opaque layer which is arranged on said upper side of said first layer (7) and partially covering said upper side (14); and - a second layer (6) of plastic, which is arranged on the first layer (7) and is transparent at least in a partial section of the opaque layer, characterized by the fact that the method comprises: - the step of partially removing the opaque layer using a laser until the opaque layer has at least one opening, or - the step of partially removing the opaque layer of a material that is altered during exposure in such a way that it becomes transparent or at least translucent in the exposed region.
    [0002]
    Method according to claim 1, characterized in that the opaque layer is laminated between the first and the second plastic layer (6, 7).
    [0003]
    Method according to claim 1, characterized in that the opaque layer is arranged in a window of the opaque layer at least in some sections.
    [0004]
    Method according to claim 1, characterized in that the opaque layer is a metallic layer (5, 5 ').
    [0005]
    Method according to claim 1, characterized in that the data storage medium (1, 1 ') is produced with at least two metallic sheets (10, 11) arranged parallel to each other and these two metallic sheets (10, 11) be provided with openings.
    [0006]
    Method according to claim 5, characterized in that the two metallic layers (10, 11) are exposed vertically in relation to their plane or in an inclination in relation to their planes, so that the openings extend vertically or in an inclination with respect to said planes.
    [0007]
    Method according to claim 5, characterized by the fact that at least two metal sheets (10, 11) are disposed distant from each other.
    [0008]
    Method according to claim 5, characterized in that at least two metal sheets (10, 11) are arranged in a window of an opaque core sheet (7 ').
    [0009]
    Method according to claim 8, characterized in that the core sheet (7 ') is laminated between two transparent sheets (9).
    [0010]
    Method according to claim 1, characterized in that the opaque layer is a plastic layer (6, 7), which has an additive, which alters the plastic layer (6, 7) during laser exposure in such a way that the opaque layer becomes transparent in the exposed section.
    [0011]
    Method according to claim 10, characterized in that the opaque plastic layer (6, 7) has a thickness of at least 20 micrometers.
    [0012]
    Method according to claim 10, characterized in that the opaque plastic layer is exposed to the laser vertically in relation to its plane or at an inclination in relation to its plane, so that the openings extend vertically or at an inclination to the said plan.
    [0013]
    Data storage medium, as defined in claim 1, said data storage medium (1, 1 ') characterized by the fact that it comprises: - a first layer (10) of plastic, comprising an upper side (14), - an opaque layer which is arranged on said upper side (14) of said first layer (10) and partially covering said upper side (14); and - a second layer (11) of plastic, which is arranged on the first layer (10) and is transparent at least in a partial section of the opaque layer.
    [0014]
    Data storage medium according to claim 13, characterized by the fact that it is an identity card, a page of a passport, a credit card or similar.
    [0015]
    Data storage medium according to claim 13, characterized in that the opaque layer is a metallic layer (10, 11), which is stamped onto a sheet by hot stamping or laminated together with a backing layer.
    [0016]
    Data storage medium according to claim 13, characterized in that the metallic layer (10, 11) is thinner than 4 micrometers.
    [0017]
    Data storage medium according to claim 13, characterized in that in the case of two metallic layers (10, 11), they are at least 50 micrometers apart.
    [0018]
    Data storage medium according to claim 13, characterized in that the opaque layer is made of plastic and the latter is transparent or translucent in an exposed section.
    [0019]
    Data storage medium according to claim 13, characterized in that the opaque layer is made of a pigmented or crystalline plastic.
    [0020]
    Data storage medium according to claim 13, characterized in that the ablated sections are visible from both sides of the data storage medium (1, 1 ').
    [0021]
    Data storage medium according to claim 13, characterized by the fact that due to the reflection behavior of the metallic layer (10, 11) the image is identifiable from above from the viewing angle as positive or negative.
    [0022]
    Method according to claim 10, characterized in that the opaque plastic layer (6, 7) is at least 50 micrometers thick.
    [0023]
    Data storage medium according to claim 13, characterized in that the metallic layer (10, 11) is thinner than 1 micrometer.
    [0024]
    Data storage medium according to claim 13, characterized in that in the case of two metallic layers (10, 11), they are at least 100 micrometers apart.
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    同族专利:
    公开号 | 公开日
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    EP2665607A1|2013-11-27|
    AU2016222386B2|2018-06-28|
    CH701875A2|2011-03-31|
    RS54086B1|2015-10-30|
    EA201391037A1|2014-01-30|
    AU2012208937B2|2016-06-16|
    SMT201500181B|2015-09-07|
    DK2665607T3|2015-06-29|
    UA110503C2|2016-01-12|
    CN106064543B|2018-04-17|
    MY164089A|2017-11-30|
    PL2665607T3|2015-09-30|
    EP2665607B1|2015-04-15|
    CL2013002060A1|2014-06-27|
    CA2825062C|2019-08-27|
    HK1187864A1|2014-04-17|
    AP4069A|2017-03-16|
    EA030131B1|2018-06-29|
    HRP20150662T1|2015-07-31|
    KR20140044291A|2014-04-14|
    US20140023838A1|2014-01-23|
    SG191925A1|2013-08-30|
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    CN106064543A|2016-11-02|
    MX340073B|2016-06-24|
    PT2665607E|2015-08-27|
    EP2756963A1|2014-07-23|
    CY1116457T1|2017-03-15|
    CN103391851B|2016-08-24|
    MX2013008345A|2014-01-17|
    GEP20156331B|2015-07-27|
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    法律状态:
    2018-02-27| B25A| Requested transfer of rights approved|Owner name: GEMALTO AG (CH) |
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-07-21| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-01-19| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-23| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/01/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    CH00086/11A|CH701875A3|2011-01-18|2011-01-18|Method for producing a multilayer data carrier and data carrier produced by this method.|
    CH86/11|2011-01-18|
    PCT/CH2012/000008|WO2012097463A1|2011-01-18|2012-01-13|Method for producing a multilayer data carrier and data carrier produced by said method|
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