CN114179549A - Anti-fake certificate card with anti-fake mark and its making process - Google Patents
Anti-fake certificate card with anti-fake mark and its making process Download PDFInfo
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- CN114179549A CN114179549A CN202111530103.5A CN202111530103A CN114179549A CN 114179549 A CN114179549 A CN 114179549A CN 202111530103 A CN202111530103 A CN 202111530103A CN 114179549 A CN114179549 A CN 114179549A
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- 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
- B42D25/328—Diffraction gratings; Holograms
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- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
- G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Credit Cards Or The Like (AREA)
Abstract
The invention relates to the technical field of anti-counterfeiting certificate cards, and particularly discloses an anti-counterfeiting certificate card with an anti-counterfeiting mark, wherein the anti-counterfeiting certificate card comprises: the anti-counterfeiting information layer comprises a holographic anti-counterfeiting structure layer and a filter layer which are sequentially arranged on the certificate card substrate; the identification card substrate is used for providing a base; the holographic anti-counterfeiting structure layer by layer is used for forming personalized information with anti-counterfeiting marks on the substrate; the filter layer is used for forming a tampering mark with changed color when the personalized information is irradiated by laser. The invention also discloses a method for manufacturing the anti-counterfeiting certificate card with the anti-counterfeiting mark. The anti-counterfeiting certificate card with the anti-counterfeiting mark effectively reduces the possibility of tampering and counterfeiting of the certificate card, and improves the safety of the certificate card.
Description
Technical Field
The invention relates to the technical field of anti-counterfeiting identification cards, in particular to an identification card with an anti-counterfeiting mark and a manufacturing method of the identification card with the anti-counterfeiting mark.
Background
The anti-counterfeiting card is widely applied to daily life of people and is commonly used in the fields of identity identification, financial transfer, social insurance, public transportation and the like, and based on the use fields, the card must have safety characteristics, and an unauthorized user cannot forge or tamper the information of the card. The certificate card anti-counterfeiting technology is characterized in that multidisciplinary physical anti-counterfeiting technologies such as materials, optics, mechanics and the like and information security anti-counterfeiting technologies are applied to the certificate card, so that the security of the certificate card is improved, and the certificate card is prevented from being forged and falsified, such as anti-counterfeiting characteristics such as paper watermarks, embossed marks, light-transmitting trademarks, holograms, fluorescent marks and the like.
More or less interference can be generated between different physical anti-counterfeiting technologies, so that the anti-interference problem becomes one of the core problems of card anti-counterfeiting. The anti-interference of the certificate card means that when the certificate card integrates various physical anti-counterfeiting technologies, the anti-counterfeiting technology not only keeps the independence of a single technology, but also ensures the overlapping of multiple technologies. Secondly, how to ensure that the personal information of the identification card is not forged or tampered or added is also one of the concerns of global anti-counterfeiting researchers. At present, international high anti-counterfeiting certificate cards are made of Polycarbonate (PC) materials, personalized information of the international high anti-counterfeiting certificate cards is usually formed by infrared laser etching, information with certain saturation and gray contrast is ablated on a specific material layer according to laser focusing depth, etched information is formed by carbonizing or partially ablating etching components in a specified material layer by using light condensation to form fine carbon particles, and therefore a layer is displayed. Nevertheless, in the case of counterfeit or falsification of the identification card, it is still possible to add or falsify the laser-etched information by a specific method, such as adding more personal information on the laser-etched photo layer, adding or modifying the number set. Such tampered information is often difficult to distinguish by eye, and a counterfeiter is provided with more opportunities to cheat a checker.
In view of this, how to reduce the possibility of tampering and counterfeiting of the card becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a certificate card with an anti-counterfeiting mark and a manufacturing method of the certificate card with the anti-counterfeiting mark, which solve the problems that the certificate card is easy to be tampered and forged in the related technology.
As a first aspect of the present invention, there is provided an anti-counterfeit certificate card with an anti-counterfeit mark, comprising: the anti-counterfeiting information layer comprises a holographic anti-counterfeiting structure layer and a filter layer which are sequentially arranged on the certificate card substrate;
the identification card substrate is used for providing a base;
the holographic anti-counterfeiting structure layer by layer is used for forming personalized information with anti-counterfeiting marks on the substrate;
the filter layer is used for forming a tampering mark with changed color when the personalized information is irradiated by laser.
Further, the holographic anti-counterfeiting structure layer comprises: a laser etching layer, a holographic structure layer and a temperature-resistant fixing layer which are arranged on the identification card substrate in sequence,
the laser etching layer is used for obtaining personalized information through laser etching;
the holographic structure layer is arranged on the laser etching layer and is used for forming a holographic pattern with a visual anti-counterfeiting effect;
the temperature-resistant fixed layer is used for supporting the holographic structure layer.
Further, the holographic structure layer comprises a holographic micro-nano structure, and a coating is arranged on the surface of the holographic micro-nano structure facing the laser etching layer.
Further, the holographic micro-nano structure comprises an image-text grating structure with a Fresnel lens effect and a micro-nano relief structure of dynamic grating.
Further, the manufacturing material of the filter layer comprises a matrix resin polyester-urethane copolymer, a color former, a color developing agent and an additive.
Further, the anti-counterfeiting information layer further comprises a protective layer arranged on the filter layer, and the protective layer is used for forming a protective film covering the surface of the anti-counterfeiting certificate card with the anti-counterfeiting mark.
As another aspect of the present invention, there is provided a method for manufacturing a counterfeit-proof identification card having a counterfeit-proof mark, the method comprising:
manufacturing a holographic anti-counterfeiting structure layer;
providing a certificate card substrate, and laminating the certificate card substrate and the holographic anti-counterfeiting structural layer;
laser etching personalized information on the holographic anti-counterfeiting structural layer, and forming an anti-counterfeiting mark;
and printing a filter layer on the holographic anti-counterfeiting structural layer, wherein the filter layer can form a tampering mark with changed color when the personalized information is irradiated by laser.
Further, the manufacturing of the holographic anti-counterfeiting structure layer comprises:
adopting a laser etching film substrate as a laser etching layer, wherein the laser etching layer can form graphic and text information with gray scale change when being irradiated and etched by laser;
coating a holographic structure layer on the laser etching layer, wherein the holographic structure layer comprises a holographic micro-nano structure, and a coating is formed on the surface of the holographic micro-nano structure facing the laser etching layer in a vacuum coating mode;
and forming a temperature-resistant fixed layer on the holographic structure layer.
Further, the holographic structure layer comprises a main structure layer at least formed by a resin layer and a high-temperature-resistant material layer, and the holographic micro-nano structure is stamped on the main structure layer in a master mould pressing mode.
Further, the manufacturing method further comprises the following steps:
and laminating a protective layer on the surface of the filter layer, which is far away from the holographic anti-counterfeiting structural layer, wherein the manufacturing material of the protective layer is the same as that of the identification card substrate.
The anti-counterfeiting certificate card with the anti-counterfeiting mark provided by the invention is characterized in that the holographic anti-counterfeiting structural layer and the filter layer are arranged in the anti-counterfeiting information layer, the holographic anti-counterfeiting structural layer forms personalized information with the anti-counterfeiting mark, the anti-counterfeiting mark has the characteristics of high identification degree and strong three-dimensional sense, and plays an obvious anti-counterfeiting role, the characteristic of laser irradiation color change can be realized through the filter layer, when a falsifier intends to change the authenticated laser mark information through laser, the change inconsistent with the color of the laser mark information can occur, obvious difference contrast is formed, the visual effect is realized, and the falsification of the falsifier on the certificate card mark information is effectively prevented. Therefore, the anti-counterfeiting certificate card with the anti-counterfeiting mark provided by the embodiment of the invention effectively reduces the possibility of tampering and counterfeiting of the certificate card, and improves the safety of the certificate card.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic cross-sectional structure view of an anti-counterfeit certificate card with an anti-counterfeit mark provided by the invention.
Fig. 2 is a schematic diagram of an image-text grating structure with a fresnel lens effect according to the present invention.
FIG. 3 is a flow chart of a method for manufacturing an anti-counterfeit certificate card with an anti-counterfeit mark according to the present invention.
Fig. 4 is a schematic diagram of verified information of laser etching provided by the present invention.
FIG. 5 is a schematic diagram of the change of different colors on the surface caused by laser etching of the modified identification card information by a tamperer according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, an anti-counterfeit certificate card with an anti-counterfeit identifier is provided, and fig. 1 is a schematic structural diagram of an anti-counterfeit certificate card with an anti-counterfeit identifier according to an embodiment of the present invention, as shown in fig. 1, including: the anti-counterfeiting card comprises a card substrate 10 and an anti-counterfeiting information layer arranged on the card substrate 10, wherein the anti-counterfeiting information layer comprises a holographic anti-counterfeiting structural layer 16 and a filter layer 14 which are sequentially arranged on the card substrate 10;
the identification card substrate 10 is used for providing a base;
the holographic anti-counterfeiting structure layer 16 is used for forming personalized information with anti-counterfeiting marks on the substrate;
the filter layer 14 is used to form a tamper indication with a color change when the individualized information is irradiated by laser light.
According to the anti-counterfeiting certificate card with the anti-counterfeiting mark, the holographic anti-counterfeiting structural layer and the filter layer are arranged in the anti-counterfeiting information layer, personalized information with the anti-counterfeiting mark is formed through the holographic anti-counterfeiting structural layer, the anti-counterfeiting mark has the characteristics of high identification degree and strong three-dimensional sense, an obvious anti-counterfeiting effect is achieved, the color changing characteristic of laser irradiation can be achieved through the filter layer, when a falsifier intends to change the authenticated laser mark information through laser, the color of the laser mark information is inconsistent with that of the laser mark information, obvious difference contrast is formed, the visual effect is realized, and the falsification of the falsifier on the certificate card mark information is effectively prevented. Therefore, the anti-counterfeiting certificate card with the anti-counterfeiting mark provided by the embodiment of the invention effectively reduces the possibility of tampering and counterfeiting of the certificate card, and improves the safety of the certificate card.
In the embodiment of the invention, the identification card substrate 10 can be made of a card body material commonly used in the field of identification cards. For example, Polycarbonate (PC), polyethylene terephthalate (PET) and copolymers of the two materials mentioned above may be selected. The identification card substrate 10 of the embodiment of the invention has certain thickness, bending toughness and good dimensional stability, is suitable for laminating and combining with an anti-counterfeiting information layer, preferably Polycarbonate (PC) or a copolymer thereof, and has the thickness of 30-500 μm, preferably 50-300 μm.
Specifically, as shown in fig. 1, the holographic anti-counterfeiting structure layer 16 includes: a laser etching layer 11, a holographic structure layer 12 and a temperature-resistant fixed layer 13 which are arranged on the identification card substrate 10 in sequence,
the laser etching layer 11 is used for obtaining personalized information through laser etching;
the holographic structure layer 12 is arranged on the laser etching layer and is used for forming a holographic pattern with a visual anti-counterfeiting effect;
the temperature-resistant fixed layer 13 is used for supporting the holographic structure layer.
It will be appreciated that the laser-etched layer 11 serves as a support for the security information layer and is bonded to the identification card substrate 10 by means of a heated laminate to fuse the side of the identification card substrate 10 bonded to the security information layer into a single piece, preferably of the same material as the identification card substrate 10, for example Polycarbonate (PC) or a copolymer thereof may be preferred. The film thickness of the laser etching layer 11 is 30-150 μm, and preferably 40-100 μm.
In the embodiment of the present invention, the laser etching layer 11 may be etched by laser to form specific personalized information.
Further specifically, as shown in fig. 1, the holographic structure layer 12 includes a holographic micro-nano structure 110, and a plating layer is disposed on the surface of the holographic micro-nano structure 110, which faces the laser etching layer 11.
It should be understood that the holographic structure layer 12 is disposed on the surface of the laser etching layer 11 away from the identification card substrate 10, the holographic structure layer 12 includes a main structure layer formed by at least a resin layer and a high temperature resistant material layer, and the holographic micro-nano structure 110 is embossed and copied on the main structure layer by a master mold pressing method, so as to form a holographic pattern with a certain visual anti-counterfeiting effect.
In the embodiment of the present invention, the main structure layer of the holographic structure layer 12 may be formed by uv curing, thermal curing, and electron beam curing, and the main structure layer may be formed from epoxy resin, acrylic resin, cellulose ester, polyurethane resin, and other resins suitable for holographic molding. Considering that the certificate card substrate 10 and the anti-counterfeiting information layer are laminated to form a whole under the conditions of high temperature (110-190 ℃) and high pressure (1-5 MPa), the integrity of the holographic micro-nano structure in the holographic structure layer after lamination is ensured, preferably, high temperature resistant materials such as nano inorganic filler, amino resin, fluorosilicone resin, polycarbonate resin, styrene-maleic anhydride copolymer and the like can be added to the coating material of the main structure layer in the holographic structure layer to improve the high temperature and high pressure resistance of the holographic structure layer.
In a preferred embodiment, the main structure layer coating of the holographic structure layer 12 is added with a copolymer containing polyester chain links and polycarbonate chain links, under the condition of lamination temperature and pressure, the side of the laser etching layer PC film, which is connected with the PC card substrate, is fused and combined, and the side, which is connected with the holographic structure layer, is covalently coupled with each other due to similar groups, so that the two layers are tightly combined, and the uncovering, tampering and replacement of a tamperer are effectively prevented.
Specifically, the holographic micro-nano structure 110 includes an image-text grating structure with a fresnel lens effect and a micro-nano relief structure of a dynamic grating.
As shown in fig. 2, there is a teletext grating structure 1101 and a fresnel lens structure 1102 superimposed on the teletext grating structure 1101.
In the embodiment of the invention, the holographic micro-nano structure 110 comprises an image and text with a Fresnel lens effect and a micro-nano relief structure of dynamic grating. The image and text of the Fresnel lens effect are obtained by superposing a Fresnel lens structure on the basis of an image and text grating structure. The image-text grating structure is an equidistant grating with the grating period of 0.5-20 mu m, preferably 1 mu m. The superposed Fresnel lens structure consists of concentric ring belt structures, the ring belt density gradually becomes dense from the middle to the edge, and the width of the middle ring belt is 20-150 μm, preferably 80 μm; the width of the edge ring belt is 0.5-5 μm, preferably 2 μm. The stripe direction of the dynamic grating is continuously changed according to a certain rule, and the change angle ranges from 0 degree to 90 degrees; the grating stripe period is 0.5-3 μm, preferably 1-2 μm; or the grating fringe period is 6-20 μm, preferably 8-14 μm.
In the embodiment of the present invention, the plating layer may be deposited on the surface of the holographic micro-nano structure 110 facing the laser etching layer 11 by using a vacuum evaporation method, a sputtering method, or the like, for improving the brightness and the gloss of the holographic anti-counterfeiting pattern, and the used materials may include high refractive index materials such as TiO2, Si2O3, SiO2, ZnS, and the like, and preferably the material has a refractive index greater than 1.8, and preferably a thickness range of 50 a to 500 a.
In the embodiment of the invention, the temperature-resistant fixing layer 13 is arranged on the holographic micro-nano structure 110, and the manufacturing material of the temperature-resistant fixing layer 13 has a higher glass transition temperature, which is higher than the temperature born during lamination, and is stable and pressure-resistant.
Further, as a material for forming the temperature-resistant fixing layer 13, thermosetting resin or thermoplastic resin having a glass transition temperature Tg higher than 200 ℃, such as cross-linked resin of polytetrafluoroethylene, cellulose acetate, or polyacrylamide, can be used. At the same time, the use of the addition of suitable inorganic fillers such as nano-silica, titanium dioxide, tin dioxide, and tin antimony oxide has also proven reliable. The coating is carried out by various suitable modes, and the thickness of the coating is preferably 0.2-1 μm. It should be noted that the refractive index of the temperature-resistant fixing layer 13 should be greatly different from that of the plating layer, so as to avoid the decrease of the brightness of the holographic structure pattern due to the extinction effect caused by the similar refractive index, and the refractive index difference is greater than 0.30, preferably greater than 0.50.
In the embodiment of the present invention, the filter layer 14 is disposed on the temperature-resistant fixed layer 13 after the laser etching layer 11 performs laser etching on the personalized information. Filter layer 14 is preferably transparent in the visually visible range, i.e., has a transmittance of at least greater than 80% in the visible wavelength range of the human eye, to avoid visual obstruction of the laser-etched information and holographic security features that are overlaid thereon. Meanwhile, when a falsifier intends to change the authenticated laser identification information on the laser etching layer by laser, a color of the filter layer 14 may change in accordance with the laser identification information, for example, when the laser information on the laser etching layer is a black-and-white gray-scale change pattern, the filter layer shows a blue/green change when trying to falsifie by reusing laser, so as to remind a user that the laser identification is falsified.
Specifically, the manufacturing material of the optical filter layer comprises a matrix resin polyester-urethane copolymer, a color former, a color developing agent and an additive.
In embodiments of the present disclosure, filter layer 14 may have the following composition: matrix resin, color former, color developer, additive and solvent. Various coating or printing methods may be employed for application to the substrate. The thickness of the coating is in the range of 0.1 μm to 50 μm, preferably in the range of 1 μm to 20 μm. The leuco dye which is wrapped in the core-shell structure polymer and is colorless is preferably used as a color former, the core-shell structure polymer is melted under the irradiation of laser so that the color former and a color developer are activated to generate chemical reaction, and the leuco dye is in a color within the wavelength range of visible light.
The matrix resin serves as a support material for filter layer 14 while providing adhesion between the upper and lower layers. Matrix resins for use herein are well known in the coatings art and are available in, for example, acrylic, styrenic, epoxy, polyester, polyurethane, polyisocyanate and natural binder resins and derivatives thereof. In a preferred embodiment, the matrix resin is a polyester-urethane copolymer based binder.
The color-former may be selected depending on the color upon laser activation, with alternative color-formers such as phthalide-based dyes, fluoran-based dyes, triarylmethane-based dyes, benzoxazine-based dyes, and spiropyran-based dyes, or mixtures thereof. Preferably, the color former is a phthalide-based dye based on its reacted hue.
Preferably, the color former is encapsulated within the core-shell polymer, isolated from the developer. Further, the core-shell structure polymer is a styrene-acrylic acid copolymer, a styrene-ethylhexyl acrylate copolymer, a styrene-butadiene copolymer or a vinyl acetate-crotonic acid copolymer. The color former is encapsulated by the core-shell emulsion polymerization reaction to form color former polymer particles.
The color developer may be an organic or inorganic color developing material, an inorganic color developer such as activated clay, attapulgite, colloidal silica, aluminum silicate, or the like; examples of the organic color developer include phenolic compounds, sulfuric acid, and carboxylic acid derivatives. Preferred are ester derivatives of sulfuric acid, such as cyclohexyl p-toluenesulfonate, 2-methylcyclohexyl p-toluenesulfonate, 1, 4-cyclohexanediol di-p-toluenesulfonate and ethyl 4-toluenesulfonylcyclohexanecarboxylate.
The additives may comprise other components suitable for improving the properties of the composition, such as laser etching aids, smoke suppressants, leveling agents, and filling aids, among others. The laser etching auxiliary agent enables the filter layer to be more sensitive to laser radiation, and color change can be formed under low laser radiation. Suitable laser etching aids can include metal oxides, carbon black and mica coated with metal oxides, metal sulfides and metal chlorides, and the like. It is to be noted that the laser-etching aid does not impart an unnecessary background coloration to the filter layer, which can be achieved by using only a small amount of laser-etching aid or by selecting a laser-etching aid that has a small absorption in the visible wavelength range.
The solvent may be water, an organic solvent or a mixture thereof. For dissolving the matrix resin, developer and additives without destroying the color former polymer particles. Alternative solvents include alkyl esters, alkanols, polyols, ketones, ethers, alkylnaphthalenes, polycyclic aromatics, and the like.
In the embodiment of the present invention, as shown in fig. 1, the anti-counterfeit information layer further includes a protection layer 15 disposed on the filter layer 14, and the protection layer 15 is used to form a protection film covering the surface of the anti-counterfeit certificate card with the anti-counterfeit mark.
It should be understood that the protective layer 15 is used as the surface layer of the identification card, has a visible light transmittance of more than 90%, ensures that the internal laser mark and the holographic information are clearly visible, and has high peel strength, flexibility, scratch resistance, weather resistance, chemical resistance and the like. The surface coating layer commonly used in the art may be used according to the usage scenario, and is not particularly limited herein.
In conclusion, the anti-counterfeiting card with the anti-counterfeiting mark provided by the invention can form a clear and visible holographic image, comprises the images and texts with Fresnel lens effect and dynamic grating, has the advantages of easy identification, stereoscopic impression, dynamic impression and color impression of eye absorption, and is firm in combination of all layers of the card, so that the card is prevented from being uncovered and tampered, and the problem that the anti-counterfeiting feature is not obvious and the card is easy to tamper in the prior art is effectively solved, wherein the change of inconsistent colors can be caused when a tamperer intends to change the personalized information in a laser mode, so that obvious difference contrast is formed, the card is visible visually.
As another embodiment of the present invention, there is provided a method for manufacturing a counterfeit-proof identification card with a counterfeit-proof mark, the method for manufacturing the counterfeit-proof identification card with the counterfeit-proof mark, as shown in fig. 3, the method comprising:
s110, manufacturing a holographic anti-counterfeiting structural layer;
in the embodiment of the present invention, as shown in fig. 4 and 5, the method may specifically include:
adopting a laser etching film substrate as a laser etching layer 11, wherein the laser etching layer 11 can form graphic and text information with gray scale change when being irradiated and etched by laser;
coating a holographic structure layer 12 on the laser etching layer 11, wherein the holographic structure layer 12 comprises a holographic micro-nano structure 110, and a coating is formed on the surface, facing the laser etching layer 11, of the holographic micro-nano structure 110 in a vacuum coating mode;
a temperature-resistant fixing layer 13 is formed on the hologram structure layer 12.
In the embodiment of the present invention, the holographic structure layer 12 includes a main structure layer formed by at least a resin layer and a high temperature resistant material layer, and the holographic micro-nano structure 110 is imprinted on the main structure layer by a master mold pressing manner.
It should be understood that the part of the security information layer composed of the laser etching layer 11, the holographic structure layer 12, the plating layer and the temperature-resistant fixing layer 13 is the holographic security structure layer 16, which is laminated with the identification card substrate 10 to form a whole.
And a laser etching layer 11, wherein a polycarbonate laser etching film substrate with the thickness of 100 mu m is adopted, the blended metal oxide laser etching auxiliary agent accounts for 1-3 per mill of the weight proportion, and the film can be etched on the surface to form image-text information with gray scale change through laser radiation.
The holographic structure layer 12 is disposed on the laser etching layer 11 by coating, wherein the holographic structure layer 12 at least comprises a main structure layer composed of resin and high temperature resistant material. More preferably, the resin is methacrylic resin, and the high-temperature resistant material is a copolymer containing polyester chain links and polycarbonate chain links, and the mass ratio of the two is 6:1-2: 1.
In addition, the holographic structure layer 12 has a holographic micro-nano structure 110, and the holographic micro-nano structure includes images and texts with fresnel lens effect and a micro-nano relief structure of dynamic grating. As shown in fig. 2, the images and texts of the fresnel lens effect are obtained by superimposing a fresnel lens structure 1102 on an image-text grating structure 1101, wherein the image-text grating 1101 is an equidistant grating with a period of 1 μm, the superimposed fresnel lens structure 1102 is composed of concentric ring band structures, the ring band density gradually becomes dense from the middle to the edge, the width of the middle ring band is 80 μm, and the width of the edge ring band is 2 μm; the stripe direction of the dynamic grating is continuously changed according to a certain rule, and the change angle range is 0-90 degrees; the grating fringe period is 1-2 μm or 8-14 μm; the holographic micro-nano structure is imprinted on the main structure layer of the holographic structure layer 12 in a master mould pressing mode; has the advantages of easy identification, stereoscopic impression, dynamic feeling and color feeling of sucking eyes.
A vacuum coating mode is adopted on the holographic structure layer 12, ZnS with a thickness of 350 a is set, and the refractive index is 2.35. The ZnS coating is uniformly and tightly covered on the surface of the holographic micro-nano structure 110 facing the laser etching layer 11, and is used for improving the brightness and the glossiness of the holographic anti-counterfeiting pattern, so that the holographic pattern presents a better visual effect.
The temperature-resistant fixing layer 13 is made of a thermocuring acrylic coating with Tg higher than 200 ℃ and contains a nano-scale fumed silica filler, the coating is stable even under the laminated high-temperature and high-pressure conditions and is extremely small or cannot deform, the coating is arranged on the coating in a reticulate roller coating mode, the thickness of the coating is 0.5-0.8 mu m, and the holographic micro-nano structure 110 is subjected to rubbing fixing.
S120, providing a card substrate, and laminating the card substrate and the holographic anti-counterfeiting structural layer;
in the embodiment of the invention, the card substrate 10 is a PC substrate, the thickness is 300 μm, the card substrate and the holographic anti-counterfeiting structural layer 16 are laminated for 20min to 30min under the conditions of 1 MPa to 5MPa and 180 ℃ to 190 ℃, wherein one surface of the laser etching layer 11 is in contact with the card substrate 10 and is melted to form a whole, and the card with the holographic anti-counterfeiting mark is obtained.
S130, laser etching personalized information on the holographic anti-counterfeiting structural layer, and forming an anti-counterfeiting mark;
in the examples of the present invention, seeIn fig. 4, personalized information is etched on the holographic anti-counterfeiting structural layer 16 by means of laser etching, the laser etching information is verified and needs to be prevented from being tampered, and the personalized information may include user portrait, text information, digital number and the like. A suitable laser source may be CO2Laser, Nd solid laser and IR laser with the wavelength range of 308 nm-1064 nm. The specific power and line speed parameters may be determined by the application scenario and may be selected to be sufficient to generate the desired image information. In this embodiment, the black-and-white laser mark 101 with a gray scale change is obtained by IR laser irradiation, and the color of the black-and-white laser mark is in clear contrast with the color of the tamper mark 102 presented by the filter layer 14 when the security card of the present invention is tampered.
S140, printing a filter layer on the holographic anti-counterfeiting structural layer, wherein the filter layer can form a tampering mark with changed color when the personalized information is irradiated by laser.
In the embodiment of the present invention, the filter layer 14 is printed on the temperature-resistant fixing layer 13, and the printing covering surface can be covered on the whole surface or only in the laser mark 101 area according to the use scene, so as to protect the laser-etched image-text information area which is easy to be tampered by a person. Areas subject to tampering such as laser encoded letters, numbers, character images, and distributor logos, etc.
In this embodiment, the main components of the material for forming filter layer 14 include: the coating comprises a matrix resin polyester-urethane copolymer, polymer particles containing blue color tone couplers, a color-developing agent cyclohexyl p-toluenesulfonate, a laser etching aid and a smoke inhibitor. The coating thickness was 10 μm.
Specifically, the manufacturing method further comprises:
and laminating a protective layer on the surface of the filter layer, which is far away from the holographic anti-counterfeiting structural layer, wherein the manufacturing material of the protective layer is the same as that of the identification card substrate.
And selecting the same material as the manufacturing material of the identification card substrate to laminate on the surface of the filter layer 14 to obtain the protective layer 15, wherein the whole surface of the protective layer 15 covers the surface of the identification card. The protective layer protects the card, provides performances such as surface weather resistance, solvent resistance and scratch resistance, and effectively avoids the damage to the card in daily use.
Referring to fig. 5, in this embodiment, the authenticated black-and-white laser identifier 101 with gray scale change is obtained through IR laser irradiation, and after the printing of the filter layer 14 and the protective layer 15 is completed, the certificate card containing the holographic anti-counterfeit identifier and the user-customized laser etching information is obtained. And all layers containing anti-counterfeiting information are firmly combined and are difficult to be uncovered for tampering. When a falsifier intends to change the laser identifier 101 through laser etching, for example, attempts such as person portrait information addition and character stroke modification result in that the color of the falsification identifier 102 appearing on the filter layer 14 is blue, and is obviously different from the black and white laser identifier 101, and is visible and cannot be restored, and when a user observes the information of such color difference, it can be determined that the identification card has been falsified.
In summary, according to the method for manufacturing the identification card with the anti-counterfeit mark provided by the embodiment of the invention, the manufactured identification card with the anti-counterfeit mark can form a clear and visible holographic image, comprises the image-text and dynamic grating with the fresnel lens effect, and has the advantages of easy identification, stereoscopic impression, dynamic feeling and color feeling of eye absorption, all layers of the identification card are firmly combined, so that the uncovering and tampering are prevented, and when a tamperer intends to change personalized information in a laser mode, the inconsistent color changes occur, obvious difference contrast is formed, the visual effect is realized, and the problems that the anti-counterfeit feature is not obvious and the tamperer is easy to tamper in the prior art are effectively solved. In addition, the manufacturing method is simple in manufacturing process and easy to realize.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A anti-counterfeiting certificate card with an anti-counterfeiting mark is characterized by comprising: the anti-counterfeiting information layer comprises a holographic anti-counterfeiting structure layer and a filter layer which are sequentially arranged on the certificate card substrate;
the identification card substrate is used for providing a base;
the holographic anti-counterfeiting structure layer by layer is used for forming personalized information with anti-counterfeiting marks on the substrate;
the filter layer is used for forming a tampering mark with changed color when the personalized information is irradiated by laser.
2. The security certificate card with the security mark of claim 1, wherein the holographic security structure layer comprises: a laser etching layer, a holographic structure layer and a temperature-resistant fixing layer which are arranged on the identification card substrate in sequence,
the laser etching layer is used for obtaining personalized information through laser etching;
the holographic structure layer is arranged on the laser etching layer and is used for forming a holographic pattern with a visual anti-counterfeiting effect;
the temperature-resistant fixed layer is used for supporting the holographic structure layer.
3. The anti-counterfeiting certificate card with the anti-counterfeiting mark according to claim 2, wherein the holographic structure layer comprises a holographic micro-nano structure, and the holographic micro-nano structure is provided with a coating facing the surface of the laser etching layer.
4. The anti-counterfeiting certificate card with the anti-counterfeiting mark according to claim 3, wherein the holographic micro-nano structure comprises an image-text grating structure with Fresnel lens effect and a micro-nano relief structure with dynamic grating.
5. The security card with a security mark of claim 1 wherein the filter layer is made of a matrix resin polyester-urethane copolymer, a color former, a color developer and an additive.
6. The anti-counterfeit certificate card with the anti-counterfeit mark as claimed in any one of claims 1 to 5, wherein the anti-counterfeit information layer further comprises a protection layer disposed on the filter layer, and the protection layer is used to form a protection film covering the surface of the anti-counterfeit certificate card with the anti-counterfeit mark.
7. A method for manufacturing a counterfeit-proof certificate card with a counterfeit-proof mark, which is used for manufacturing the counterfeit-proof certificate card with the counterfeit-proof mark of any one of claims 1 to 6, wherein the manufacturing method comprises the following steps:
manufacturing a holographic anti-counterfeiting structure layer;
providing a certificate card substrate, and laminating the certificate card substrate and the holographic anti-counterfeiting structural layer;
laser etching personalized information on the holographic anti-counterfeiting structural layer, and forming an anti-counterfeiting mark;
and printing a filter layer on the holographic anti-counterfeiting structural layer, wherein the filter layer can form a tampering mark with changed color when the personalized information is irradiated by laser.
8. The method of claim 7, wherein the step of forming the holographic security structure layer comprises:
adopting a laser etching film substrate as a laser etching layer, wherein the laser etching layer can form graphic and text information with gray scale change when being irradiated and etched by laser;
coating a holographic structure layer on the laser etching layer, wherein the holographic structure layer comprises a holographic micro-nano structure, and a coating is formed on the surface of the holographic micro-nano structure facing the laser etching layer in a vacuum coating mode;
and forming a temperature-resistant fixed layer on the holographic structure layer.
9. The manufacturing method of claim 8, wherein the holographic structure layer comprises a main structure layer formed by at least a resin layer and a high temperature resistant material layer, and the holographic micro-nano structure is embossed on the main structure layer by means of master mould pressing.
10. The method of manufacturing according to any one of claims 7 to 9, further comprising:
and laminating a protective layer on the surface of the filter layer, which is far away from the holographic anti-counterfeiting structural layer, wherein the manufacturing material of the protective layer is the same as that of the identification card substrate.
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