CN112150909A - Magic particle characteristic identification anti-counterfeiting card and preparation method thereof - Google Patents
Magic particle characteristic identification anti-counterfeiting card and preparation method thereof Download PDFInfo
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- CN112150909A CN112150909A CN202011196488.1A CN202011196488A CN112150909A CN 112150909 A CN112150909 A CN 112150909A CN 202011196488 A CN202011196488 A CN 202011196488A CN 112150909 A CN112150909 A CN 112150909A
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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
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
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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
- G09F3/03—Forms or constructions of security seals
- G09F3/0394—Forms or constructions of security seals with violation indication by generating a random number
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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
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Abstract
The invention belongs to the technical field of anti-counterfeiting marks, and particularly relates to a magic particle feature recognition anti-counterfeiting card and a preparation method thereof. The printing film comprises a local covering layer, a first plastic film layer, a local uncovering layer, a first adhesive layer, a random identification layer, a second printing layer and a base material layer which are arranged from top to bottom in sequence; the random identification layer comprises a first printing layer, a second plastic film layer, a random physical characteristic layer, a third plastic film layer, a color ink layer and a second adhesive layer which are sequentially arranged from top to bottom, the information of the first printing layer comprises variable information, the random physical characteristic layer comprises random physical characteristics and an adhesive, and the variable information and the random physical characteristics have a corresponding relation; the information of the second printing layer comprises variable information, and the variable information of the second printing layer and the variable information of the first printing layer have a corresponding relation; the local uncovering layer is arranged above the variable information of the second printing layer; the partial masking layer partially masks the second printed layer or all of the variable information. The invention has good anti-counterfeiting effect and simple preparation method.
Description
Technical Field
The invention belongs to the technical field of anti-counterfeiting marks, and particularly relates to a magic particle feature recognition anti-counterfeiting card and a preparation method thereof.
Background
Along with the progress of science and technology, the anti-counterfeiting means is more advanced and more diversified. In order to prevent the products of each commodity manufacturer from being counterfeited, the commodity manufacturers mostly adopt anti-counterfeiting marks to prevent the commodities produced by the manufacturers from being counterfeited.
The texture anti-counterfeiting technology is an anti-counterfeiting technology taking inherent texture characteristics of materials as anti-counterfeiting identification marks, and the important characteristic that texture distribution characteristic patterns are used for anti-counterfeiting identification marks is that each pattern is different, and the basic principle is as follows: randomly forming a texture distribution characteristic pattern, storing the texture distribution characteristic pattern into a cloud database for checking, calling out the contrast of the texture distribution characteristic pattern in the cloud database during identification, and judging whether the texture distribution characteristic pattern is false.
The anti-counterfeiting technical principle of the texture has been disclosed for many years, most of related products in the current market are texture paper products, namely, colored fibers are added into paper pulp to cause texture which can be seen by naked eyes, and then the texture is printed into the anti-counterfeiting mark, but the texture anti-counterfeiting mark has the problems of unobvious texture, poor touch and easy printing and imitation due to tiny texture particles forming the texture, and the anti-counterfeiting mark with obvious texture and good touch has large processing difficulty. For large labels of bottle bodies such as engine oil tanks and cosmetics, the attractiveness of the marks is influenced by full-page physical characteristics, the use amount of random physical characteristic particles is large, more materials are consumed, the cost is increased, in addition, the processing efficiency is low, the coating printing and information acquisition efficiency is low, and the yield is low.
Chinese patent CN 202010217263.3 discloses a random physical characteristic identification big label and a preparation method thereof, wherein the label comprises a first printing layer, a first plastic film layer, a first glue layer, a random physical characteristic layer, a second printing layer, a second plastic film layer, a color ink layer and a second glue layer, which are sequentially arranged from top to bottom. The random physical characteristic layer is formed by coating on the second printing layer, and the following problems exist in the coating process:
1) because the particles have a certain thickness, when the glue amount combined with random physical characteristics is small, scratches are easily generated on the printing layer and the second plastic film layer in the coating process, the surface effect of the mark is influenced, and the information reading of the printing layer is interfered seriously; when the glue water volume that combines with random physical characteristic is bigger, the coating is more smooth, is difficult to appear the mar, but when receiving extrusion or cross cutting, takes place to overflow easily and glues, the anti-phenomenon of gluing of sign appears in the production and processing process.
2) When coating the granule, the granule mixes in glue, because granule and glue density inconsistent, sinks easily or the come-up in the coating process, often appears coating inhomogeneous when leading to the coating, appears not having physical characteristic granule or the granule too much causes quality problems such as mar. This problem is solved to the mode that adopts manual stirring mostly at present, but direct coating occasionally certain effect after the manual stirring, but after coating a period, this problem reappears again, can not fundamentally solve this problem.
Anti-fake card thickness is thicker, and it is big that the online coating sets up the granule degree of difficulty, and extremely difficult realization, anti-fake card mostly scrapes the card or tears the card open simultaneously, need just can verify the true and false after purchasing.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the magic particle characteristic identification anti-counterfeiting card which is manufactured by embedding the small mark into the anti-counterfeiting card, the anti-counterfeiting information is unique, the counterfeiting and the rapid identification are difficult, the authenticity can be verified at any time in the commodity circulation process, the anti-counterfeiting card is locally uncovered after being purchased, the hidden variable information appears, the information of the product such as traceability, anti-counterfeiting, integration and prize exchange can be inquired, the anti-counterfeiting card is uncovered, damaged and cannot be restored, the secondary use is effectively prevented, the magic particle is positioned between two films, the magic particle is difficult to fall off, and the coating is uniform.
The invention also provides a preparation method of the anti-counterfeiting coating, which has the advantages of low processing cost, high efficiency and high yield and solves the problem of scratches or glue overflow caused by the direct anti-counterfeiting coating with the magic particle characteristic.
The magic particle characteristic identification anti-counterfeiting card comprises a local covering layer, a first plastic film layer, a local uncovering layer, a first adhesive layer, a random identification mark layer, a second printing layer and a base material layer which are sequentially arranged from top to bottom;
the random identification mark layer is partially covered above the second printing layer;
the random identification layer comprises a first printing layer, a second plastic film layer, a random physical characteristic layer, a third plastic film layer, a color ink layer and a second adhesive layer which are sequentially arranged from top to bottom, wherein the information of the first printing layer comprises variable information, the random physical characteristic layer comprises random physical characteristics and adhesives, and the variable information and the random physical characteristics have a corresponding relationship; the corresponding relationship can be a local corresponding relationship or an overall corresponding relationship, and is determined according to the needs of the client.
The information of the second printing layer comprises variable information, and the variable information of the second printing layer and the variable information of the first printing layer have a corresponding relation;
the partial uncovering layer is arranged above the variable information of the second printing layer, the partial covering layer covers part or all of the variable information on the second printing layer, and the complete variable information on the second printing layer can be seen after the partial uncovering layer is uncovered.
Wherein:
the magic particles are particles with random physical characteristics. The random physical characteristic is at least one of particles, bars, rings or fiber filaments which can be identified by naked eyes. Preferably, the random physical feature is at least one of a visually recognizable metallic-textured particle, bar, ring or filament, a substance that has both a distinct external feature and is capable of being separated from the marking. The thickness of the random physical characteristic layer is 1-20 μm.
The local uncovering layer has the function of uncovering, an uncovering force value (peeling force) is 0.0020-0.0500N/mm, the force value is too large, the content of the second printing layer is damaged when the second printing layer is easily uncovered, the base material layer is uncovered, the force value is too small, and the second printing layer is easy to warp and fall off when in use.
The first plastic film layer, the second plastic film layer and the third plastic film layer are PET, PE, PP or PVC films, the thickness of the first plastic film layer is 10-30 μm, and the thickness of the second plastic film layer and the thickness of the third plastic film layer are 10-80 μm respectively.
The thickness of the substrate layer is 100-400 mu m, and the substrate layer is paperboard or coated paper.
And a third printing layer and a protective layer are arranged below the base material layer.
The invention relates to a preparation method of a magic particle feature identification anti-counterfeiting card, which comprises the following steps:
1) preparing a random identification layer:
mixing particles with random physical characteristics into an adhesive, diluting with a solvent, coating by using a compound machine, and compounding a second plastic film layer and a third plastic film layer; wherein, the bottom of the coating material groove is provided with an airflow stirring device (the structural schematic diagram is shown in figure 6), the airflow stirring device comprises an air inlet pipe and a conduit, the air inlet pipe is communicated with the conduit, and the conduit is uniformly provided with air outlets;
printing graphic and text information on the second plastic film layer to form a first printing layer, wherein the graphic and text information comprises variable information;
thirdly, printing a color ink layer below the third plastic film layer;
fourthly, coating an adhesive below the color ink layer to form a second adhesive layer;
collecting variable information and random physical characteristics, correlating the variable information with local or all random physical characteristics through operation, and uploading the variable information and local or all random physical characteristics to a database for query;
2) printing on the base material layer to form a second printing layer;
3) labeling the random identification layer on the second printing layer by using an automatic labeling machine to form a random identification layer, and associating the random identification layer with the variable information of the second printing layer;
4) coating a local uncovering layer below the first plastic film layer in a positioning way;
5) coating an adhesive on the random identification mark layer, and positioning and compounding the adhesive and the first plastic film layer;
6) a local covering layer is arranged above the first plastic film layer, the local covering layer covers part or all of the variable information on the second printing layer, and the covering layer is an electrochemical aluminum coating or covering ink;
7) and die cutting to obtain the anti-counterfeiting card product.
In the step I, the diameter of the air inlet pipe and the conduit is 6-8mm, the air pressure of the air inlet pipe is 0.2-0.5MPa, the hole spacing of the air outlet holes is 2-3cm, and the hole diameter of the air outlet holes is 0.01-0.08 cm.
In the step I, the adhesive is CF-206, the solvent is ethyl acetate, and the mass ratio of the adhesive to the solvent to the random physical characteristic particles is 100:80: 2. The solvent is used for dilution, so that the uniform distribution of the random physical characteristic particles can be ensured during coating, the solid content is reduced, the glue amount is reduced under the condition of ensuring the uniform random physical characteristic particles, and the glue overflow phenomenon is avoided.
And 2) printing on the substrate layer to form a second printing layer, then printing below the substrate layer to form a third printing layer, and preparing a protective layer on the third printing layer. The protective layer is prepared by glazing protection or film coating protection.
In the step 5), the adhesive is a UV pressure-sensitive adhesive, the film coating process is to compound the first plastic film layer and other parts together by using the UV pressure-sensitive adhesive, coat the UV pressure-sensitive adhesive on the other parts, then compound the other parts together with the first plastic film layer, and react the UV pressure-sensitive adhesive after UV light curing to bond the two parts together. Has the advantages that: because the random identification mark layer is of a multilayer structure and has obvious protrusions, the UV pressure-sensitive adhesive is compounded firstly and then cured by a UV lamp, when the UV pressure-sensitive adhesive is not irradiated by UV light, liquid flows, the two layers are compounded together in a flowing state, the glue can be fully soaked, and then the glue generates pressure sensitivity and has no flowability after being irradiated by the UV light, so that no laminating bubbles are ensured at the edge positions of the protrusions.
When the consumer identifies the authenticity:
1. the variable information (namely the information of the first printing layer) of the anti-counterfeiting card is scanned, the distribution condition of the random physical characteristic particles can be adjusted, and the authenticity of the anti-counterfeiting mark is verified before purchase by comparing and identifying the authenticity of the anti-counterfeiting mark. In addition, the variable information can be scanned by software, then the distribution condition of the random physical characteristic particles is collected, and the system carries out self-comparison to judge the authenticity of the identification.
2. After the variable information is scanned and verified to be a genuine product, when the surface film is partially uncovered, the variable codes of the second printing layer appear, and the functions of tracing, anti-counterfeiting, rewarding, integrating and the like can be realized through the variable codes of the second printing layer.
3. The random physical characteristic of the random physical characteristic layer has concave-convex feeling when touched and can be picked out.
4. The surface layer is partially uncovered: the hidden number of the second printing layer can be displayed after the anti-counterfeiting card is uncovered, the random identification layer is still protected at the uncovered position, and after the anti-counterfeiting card is torn forcibly, paper can be torn, so that the anti-counterfeiting card is seriously damaged, and secondary use is prevented.
Compared with the prior art, the invention has the beneficial effects that:
1. the anti-counterfeiting card can verify the authenticity before purchase, solves the problem that the authenticity cannot be distinguished in the circulation process, can be checked by anyone, and can determine whether to purchase after being verified as a genuine product, thereby reducing unnecessary loss.
2. The anti-counterfeiting card is formed by associating random physical characteristics which are difficult to reproduce in a random physical characteristic layer with variable information, has uniqueness and cannot be imitated.
3. The distribution condition of random characteristic particles can be adjusted by scanning the variable information of the anti-counterfeiting card, and the authenticity of the anti-counterfeiting mark can be identified by comparison. In addition, the variable information can be scanned by software, then the distribution condition of the random characteristic particles is collected, and the system carries out self-comparison to judge the authenticity of the identification. An anti-counterfeiting card which is difficult to forge and can be identified quickly is formed.
4. The anti-counterfeiting card can be damaged after being uncovered, the secondary use of the anti-counterfeiting card can be effectively prevented, and the anti-counterfeiting strength is high. The random physical features are concave-convex to the hand and can be picked out. Random physical features exist between the two films (the second plastic film and the third plastic film) and the risk of processing falling off is avoided.
5. The preparation method of the invention adopts the mode of embedding the small mark into the anti-counterfeiting card, prepares the random physical characteristics on the small mark, and has the advantages of less raw material consumption, low processing cost, high efficiency and high yield. The small mark is prepared firstly, then the small mark is embedded into the anti-counterfeiting card, the random physical characteristics are difficult to process, and the finished small mark is embedded into the anti-counterfeiting card, so that the yield of the anti-counterfeiting card can be improved, and the cost is saved. For the integral anti-counterfeiting card, once a problem occurs during the random physical characteristic processing, the whole anti-counterfeiting card is damaged, and unnecessary waste is caused.
6. When the random physical characteristic particles are coated, the adhesive is diluted by adopting a solvent, and the using amount of the random physical characteristic particles is controlled within a certain range, so that the particles can be uniformly coated, and the risk of glue overflow between two layers of films is avoided.
7. The preparation method is scientific, reasonable, simple and feasible. The airflow stirring device is arranged at the bottom of the coating trough, so that particles can be uniformly coated, the problem of non-uniform coating of the particles is fundamentally solved, labor is saved, the quality and the attractiveness of products can be improved, and the production efficiency is guaranteed.
Drawings
Fig. 1 is a schematic layer structure diagram of a magic particle feature identification anti-counterfeit card according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of a layer structure of a random identification layer in example 1;
fig. 3 is a schematic layer structure diagram of a magic particle feature identification anti-counterfeit card according to embodiment 2 of the present invention;
FIG. 4 is a schematic diagram of the apparent structure of the magic particle feature identification anti-counterfeit card of the present invention;
FIG. 5 is a schematic diagram of the revealed apparent structure of the magic particle feature recognition anti-counterfeit card of the present invention;
FIG. 6 is a schematic structural view of a gas flow stirring device according to the present invention;
in the figure: 1. a partial capping layer; 2. a first plastic film layer; 3. locally uncovering the layer; 4. a first adhesive layer; 5. randomly identifying the identification layer; 5.1, a first printing layer; 5.2, a second plastic film layer; 5.3, a random physical characteristic layer; 5.4, a third plastic film layer; 5.5, a color ink layer; 5.6, a second adhesive layer; 6. a second printed layer; 7. a substrate layer; 8. a third printed layer; 9. and a protective layer.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example 1
As shown in fig. 1 and 2, the magic particle feature recognition anti-counterfeiting card comprises a partial covering layer 1, a first plastic film layer 2, a partial uncovering layer 3, a first adhesive layer 4, a random recognition identification layer 5, a second printing layer 6 and a substrate layer 7 which are sequentially arranged from top to bottom;
the random identification mark layer 5 is partially covered above the second printing layer 6;
the random identification mark layer 5 comprises a first printing layer 5.1, a second plastic film layer 5.2, a random physical characteristic layer 5.3, a third plastic film layer 5.4, a color ink layer 5.5 and a second adhesive layer 5.6 which are sequentially arranged from top to bottom, wherein the information of the first printing layer 5.1 comprises variable information, the random physical characteristic layer 5.3 consists of random physical characteristics and adhesive, and the variable information and the random physical characteristics have corresponding relations.
The information of the second printing layer 6 comprises variable information, and the variable information of the second printing layer 6 and the variable information of the first printing layer 5.1 have a corresponding relation;
the partial uncovering layer 3 is arranged above the variable information of the second printing layer 6, the partial covering layer 1 covers all the variable information on the second printing layer 6, and the complete variable information on the second printing layer 6 can be seen after the partial uncovering layer 3 is uncovered.
The magic particles are particles with random physical characteristics. The random physical features are particles with metal texture which can be identified by naked eyes. The thickness of the random physical feature layer 5.3 is 20 μm.
The first plastic film layer 2 is a PE film with the thickness of 20 μm.
The second plastic film layer 5.2 is a PET film with the thickness of 50 μm.
The third plastic film layer 5.4 is a PVC film with the thickness of 50 μm.
The thickness of the substrate layer 7 is 300 mu m, and the substrate layer 7 is paperboard.
The invention relates to a preparation method of a magic particle feature identification anti-counterfeiting card, which comprises the following steps:
1) preparation of the random identification layer 5:
mixing particles with random physical characteristics into an adhesive, diluting with a solvent, coating by using a compound machine, and compounding a second plastic film layer 5.2 and a third plastic film layer 5.4 together; the bottom of the coating material tank is provided with an airflow stirring device, the airflow stirring device comprises an air inlet pipe and a guide pipe, the air inlet pipe is communicated with the guide pipe, and air outlet holes are uniformly distributed in the guide pipe;
printing graphic and text information on the second plastic film layer 5.2 to form a first printing layer 5.1, wherein the graphic and text information comprises variable information;
thirdly, printing a color ink layer 5.5 below the third plastic film layer 5.4;
fourthly, coating an adhesive below the color ink layer 5.5 to form a second adhesive layer 5.6;
collecting variable information and random physical characteristics, correlating the variable information with all the random physical characteristics through operation, and uploading the variable information to a database for query;
2) printing on the base material layer 7 to form a second printing layer 6;
3) labeling the random identification layer 5 on the second printing layer 6 by using an automatic labeling machine to form the random identification layer 5, and associating the variable information of the random identification layer 5 and the second printing layer 6;
4) coating a local uncovering layer 3 below the first plastic film layer 2 in a positioning way;
5) coating an adhesive on the random identification mark layer 5, and positioning and compounding the adhesive and the first plastic film layer 2 together;
6) a local covering layer 1 is arranged above the first plastic film layer 2, the local covering layer 1 covers all variable information on the second printing layer 6, and the covering layer is an alumite coating;
7) and die cutting to obtain the anti-counterfeiting card product.
In the step I, the diameter of the air inlet pipe and the diameter of the guide pipe are 8mm, the air pressure of the air inlet pipe is 0.5MPa, the hole distance of the air outlet holes is 3cm, and the hole diameter of the air outlet holes is 0.05 cm. The adhesive is CF-206, the solvent is ethyl acetate, and the mass ratio of the adhesive to the solvent to the random physical characteristic particles is 100:80: 2. The solvent is used for dilution, so that the uniform distribution of the random physical characteristic particles can be ensured during coating, the solid content is reduced, the glue amount is reduced under the condition of ensuring the uniform random physical characteristic particles, and the glue overflow phenomenon is avoided.
When the consumer identifies the authenticity:
1. by scanning the variable information (namely the information of the first printing layer 5.1) of the anti-counterfeiting card, the distribution condition of the random physical characteristic particles can be adjusted, and the authenticity of the anti-counterfeiting mark can be verified before purchase by comparing and identifying the authenticity of the anti-counterfeiting mark. In addition, the variable information can be scanned by software, then the distribution condition of the random physical characteristic particles is collected, and the system carries out self-comparison to judge the authenticity of the identification.
2. After the variable information is scanned and verified to be a genuine product, when the surface film is partially uncovered, the variable codes of the second printing layer 6 appear, and the functions of tracing, anti-counterfeiting, prize exchanging, point integrating and the like can be realized through the variable codes of the second printing layer 6.
3. The random physical characteristics of the random physical characteristic layer 5.3 are concave-convex to the touch and can be picked out.
4. The surface layer is partially uncovered: the hidden number of the second printing layer 6 can be displayed after being uncovered, the random identification layer 5 is still protected at the uncovered position, and after the film is torn forcefully, paper can be torn open, so that the anti-counterfeiting card is seriously damaged, and secondary use is prevented.
Example 2
As shown in fig. 2-3, the structure of the magic particle feature identification anti-counterfeit card is the same as that of embodiment 1, except that: and a third printing layer 8 and a protective layer 9 are arranged below the base material layer 7.
The preparation method is the same as that of example 1, except that: in the step 2), printing is performed on the substrate layer 7 to form the second printing layer 6, then, printing is performed below the substrate layer 7 to form the third printing layer 8, and the protective layer 9 is prepared on the third printing layer 8. The preparation of the protective layer 9 is a film covering protection.
The same procedure as in example 1 was used to authenticate the consumer.
It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the present invention in any way, since modifications and variations will occur to those skilled in the art upon the use of the foregoing disclosure and the appended claims. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. A magic grain feature recognition anti-counterfeiting card is characterized in that: the adhesive comprises a local covering layer (1), a first plastic film layer (2), a local uncovering layer (3), a first adhesive layer (4), a random identification mark layer (5), a second printing layer (6) and a base material layer (7) which are arranged from top to bottom in sequence;
the random identification mark layer (5) is partially covered above the second printing layer (6);
the random identification mark layer (5) comprises a first printing layer (5.1), a second plastic film layer (5.2), a random physical characteristic layer (5.3), a third plastic film layer (5.4), a color ink layer (5.5) and a second adhesive layer (5.6) which are sequentially arranged from top to bottom, the information of the first printing layer (5.1) comprises variable information, the random physical characteristic layer (5.3) consists of random physical characteristics and an adhesive, and the variable information and the random physical characteristics have a corresponding relationship;
the information of the second printing layer (6) comprises variable information, and the variable information of the second printing layer (6) and the variable information of the first printing layer (5.1) have a corresponding relation;
the partial uncovering layer (3) is arranged above the variable information of the second printing layer (6), the partial covering layer (1) covers part or all of the variable information on the second printing layer (6), and the complete variable information on the second printing layer (6) can be seen after the partial uncovering layer (3) is uncovered.
2. The magic particle feature identification anti-counterfeiting card according to claim 1, characterized in that: the thickness of the random physical characteristic layer (5.3) is 1-20 μm.
3. The magic particle feature identification anti-counterfeiting card according to claim 1, characterized in that: the first plastic film layer (2), the second plastic film layer (5.2) and the third plastic film layer (5.4) are PET, PE, PP or PVC films, the thickness of the first plastic film layer (2) is 10-30 mu m, and the thicknesses of the second plastic film layer (5.2) and the third plastic film layer (5.4) are 10-80 mu m respectively.
4. The magic particle feature identification anti-counterfeiting card according to claim 1, characterized in that: the thickness of the substrate layer (7) is 100-400 mu m, and the substrate layer (7) is paperboard or coated paper.
5. The magic particle feature identification anti-counterfeiting card according to claim 1, characterized in that: and a third printing layer (8) and a protective layer (9) are arranged below the base material layer (7).
6. A method for preparing the magic particle feature recognition anti-counterfeiting card as claimed in any one of claims 1 to 5, which is characterized in that: the method comprises the following steps:
1) preparing a random identification layer (5):
mixing random physical characteristic particles into an adhesive, diluting with a solvent, coating with a compound machine, and compounding a second plastic film layer (5.2) and a third plastic film layer (5.4) together, wherein the bottom of a coating material tank is provided with an airflow stirring device, the airflow stirring device comprises an air inlet pipe and a guide pipe, the air inlet pipe is communicated with the guide pipe, and air outlet holes are uniformly distributed on the guide pipe;
printing graphic and text information on the second plastic film layer (5.2) to form a first printing layer (5.1), wherein the graphic and text information comprises variable information;
thirdly, printing a color ink layer (5.5) below the third plastic film layer (5.4);
fourthly, coating an adhesive below the color ink layer (5.5) to form a second adhesive layer (5.6);
collecting variable information and random physical characteristics, correlating the variable information with local or all random physical characteristics through operation, and uploading the variable information and local or all random physical characteristics to a database for query;
2) printing on the base material layer (7) to form a second printing layer (6);
3) labeling the random identification layer (5) on the second printing layer (6) by using an automatic labeling machine to form the random identification layer (5), and associating the random identification layer (5) with the variable information of the second printing layer (6);
4) coating a local uncovering layer (3) below the first plastic film layer (2) in a positioning way;
5) coating an adhesive on the random identification mark layer (5) and positioning and compounding the adhesive and the first plastic film layer (2) together;
6) a partial covering layer (1) is arranged above the first plastic film layer (2), the partial covering layer (1) covers part or all of the variable information on the second printing layer (6), and the covering layer is an electrochemical aluminum coating or covering ink;
7) and die cutting to obtain the anti-counterfeiting card product.
7. The method of claim 6, wherein: in the step I, the diameter of the air inlet pipe and the conduit is 6-8mm, the air pressure of the air inlet pipe is 0.2-0.5MPa, the hole spacing of the air outlet holes is 2-3cm, and the hole diameter of the air outlet holes is 0.01-0.08 cm.
8. The method of claim 6, wherein: in the step I, the adhesive is CF-206, the solvent is ethyl acetate, and the mass ratio of the adhesive to the solvent to the random physical characteristic particles is 100:80: 2.
9. The method of claim 6, wherein: and in the step 2), printing is carried out on the substrate layer (7) to form a second printing layer (6), then, printing is carried out below the substrate layer (7) to form a third printing layer (8), and a protective layer (9) is prepared on the third printing layer (8).
10. The method of claim 9, wherein: the protective layer (9) is prepared by glazing protection or film coating protection.
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