Glue surface code printing magic particle feature recognition large label and preparation method thereof

Abstract

The present application belongs to the technical field of anti-counterfeiting identification, and particularly relates to a glue surface code spraying magic particle feature identification large label and a preparation method thereof. The glue surface code spraying magic particle feature identification large label comprises, from top to bottom, a first plastic film layer, a first adhesive layer, a random identification mark layer, a second printing layer, a base material layer, a third adhesive layer and a digital information layer, the random identification mark layer partially covers the second printing layer, the random identification mark layer comprises, from top to bottom, a second plastic film layer, a first printing layer, a random physical feature layer, a third plastic film layer, a color ink layer and a second adhesive layer, the first printing layer information comprises variable information, the random physical feature layer is composed of random physical features and adhesive, and a corresponding relationship exists between the variable information and the random physical features. The large label has low preparation cost and high yield.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of anti-counterfeiting identification, and particularly relates to a glue surface code spraying magic particle feature identification large sticker and a preparation method thereof. BACKGROUND

[0002] With the progress of science and technology, anti-counterfeiting means is becoming more and more advanced and diversified. In order to prevent their products from being counterfeited, most commodity manufacturers use anti-counterfeiting identification to prevent the commodities they produce from being counterfeited.

[0003] Texture anti-counterfeiting technology is a kind of anti-counterfeiting technology that takes the inherent texture characteristics of the material itself as an anti-counterfeiting identification mark. An important feature of using texture distribution characteristic patterns for anti-counterfeiting identification is that each one is different. The basic principle is: a random texture distribution characteristic pattern is formed and stored in the cloud database for checking. When identifying, the texture distribution characteristic pattern in the cloud database is called out for comparison. If it does not match, it is fake.

[0004] The principle of texture anti-counterfeiting technology has been disclosed for many years. At present, the related products on the market are mostly texture paper products, that is, colored fibers are added to the pulp to form visible textures, and then the textures are printed into anti-counterfeiting marks. However, such texture anti-counterfeiting marks have the problems of not obvious texture, poor touch, and easy to be printed and imitated due to the very small structure of the texture particles forming the texture. On the other hand, it is difficult to process anti-counterfeiting marks with obvious texture and good touch. For large stickers on oil drums, cosmetics bottles and other bottle bodies, the whole page physical characteristics affect the appearance of the mark, and the amount of random physical characteristic particles is large, which consumes a lot of materials and increases the cost. In addition, the processing efficiency is low, and the efficiency of coating printing and information collection is also low, resulting in low yield.

[0005] Chinese patent CN 202010217263.3 discloses a random physical feature identification large sticker and a preparation method thereof. The mark includes a first printing layer, a first plastic film layer, a first glue layer, a random physical feature layer, a second printing layer, a second plastic film layer, a color ink layer and a second glue layer arranged from top to bottom. The random physical feature layer is formed by coating on the second printing layer. During the coating process, the following problems exist:

[0006] 1) Since the particles have a certain thickness, when the amount of glue combined with the random physical features is small, scratches may easily occur on the printing layer and the second plastic film layer during the coating process, affecting the surface effect of the mark, and in severe cases, the reading of the information on the printing layer may be disturbed. When the amount of glue combined with the random physical features is large, the coating is relatively smooth and scratches are not easy to occur, but when the particles are extruded or die-cut, glue overflow may occur during the production and processing process, and the mark may be stuck.

[0007] 2) when coating the particles, the particles are mixed in the glue, due to the inconsistent density of the particles and the glue, the particles are easy to sink or float during the coating process, resulting in uneven coating, no physical characteristic particles or too many particles causing scratches and other quality problems during coating. At present, artificial stirring is mostly used to solve this problem, but when coating directly after artificial stirring, there is a certain effect, but after a period of coating, this problem reappears, which cannot fundamentally solve this problem. SUMMARY

[0008] In view of the deficiencies of the prior art, the present application provides a glue surface code spraying magic particle characteristic identification large label, which is made by embedding small identification into the large label, the anti-fake information is unique, it is difficult to counterfeit and can be quickly identified, the authenticity can be verified at any time during the commodity circulation process, after purchase, the hidden variable information appears when the label is opened, the traceability, anti-fake, points and prize redemption information of the product can be inquired, the label is damaged after being opened and cannot be restored, effectively preventing secondary use, and the magic particles are located between the two film layers and are not easy to fall off.

[0009] The present application also provides a preparation method thereof, which has low processing cost, high efficiency, high yield, uniform coating and solves the scratch or glue overflow problem of direct coating of magic particle characteristics.

[0010] The glue surface code spraying magic particle characteristic identification large label provided by the present application comprises, from top to bottom, a first plastic film layer, a first adhesive layer, a random identification mark layer, a second printing layer, a base material layer, a third adhesive layer and a digital information layer,

[0011] The random identification mark layer is partially covered on the second printing layer;

[0012] The random identification mark layer comprises, from top to bottom, a second plastic film layer, a first printing layer, a random physical characteristic layer, a third plastic film layer, a color ink layer and a second adhesive layer, the first printing layer information comprises variable information, the random physical characteristic layer is composed of random physical characteristics and adhesive, and there is a corresponding relationship between the variable information and the random physical characteristics; the corresponding relationship can be a local corresponding relationship or a whole corresponding relationship, depending on the needs of customers.

[0013] The digital information layer information comprises variable information, and the variable information of the digital information layer has a corresponding relationship with the variable information of the first printing layer; the corresponding relationship can be realized by the following ways:

[0014] A, after collecting the variable information of the first printing layer, code spraying is performed on the digital information layer for corresponding;

[0015] B, after code spraying is performed on the digital information layer, the variable information of the first printing layer and the variable information of the code spraying are collected respectively for corresponding.

[0016] The easy-tear line is arranged on both sides of the digital information layer, and the variable information of the digital information layer can be seen by tearing the label along the easy-tear line.

[0017] Wherein:

[0018] The magic particle is a random physical characteristic particle. The random physical characteristic is at least one of a particle, a strip, a ring or a fiber that can be recognized by naked eyes. Preferably, the random physical characteristic is at least one of a particle, a strip, a ring or a fiber that can be recognized by naked eyes and has a metallic texture, which is a substance that has obvious external characteristics and can be separated from the label. The thickness of the random physical characteristic layer is 1-20 microns.

[0019] 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 microns, and the thickness of the second plastic film layer and the third plastic film layer is 10-80 microns, respectively. Preferably, the first plastic film layer is a PP or PE film, which has excellent hand feeling, making the product more soft and comfortable, and has good fitting performance, without the phenomenon of label warping and wrinkling. At the same time, when the label is heated and transferred as a whole, thermal shrinkage occurs, resulting in deformation and failure of the label.

[0020] The first printing layer is provided below the solid color layer. Preferably, the solid color layer is a white ink layer or a silver ink layer. The variable information is located above the solid color layer, which can effectively avoid the interference of the random physical characteristic below with the readability.

[0021] The third plastic film layer is provided below the local release layer. The random identification label layer can be prevented from being completely taken out from the label and pasted on other labels, which will cause the scanned true label before purchase and the fake product after purchase.

[0022] The digital information layer is provided below the local varnish layer. The local varnish layer can reduce the force value of the local tearing, which is 0.5-5 N / 25 mm. In this way, the area can be easily torn, and the tearing force value is not too large, so that the two-dimensional code is not deformed and cannot be read.

[0023] The digital information layer is provided below the silicone paper layer.

[0024] The preparation method of the glue surface code magic particle characteristic identification large label according to the application comprises the following steps:

[0025] 1) Preparation of the random identification label layer:

[0026] ① Printing graphic information below the second plastic film layer to form a first printing layer, wherein the graphic information contains variable information;

[0027] ② Printing a color ink layer below the third plastic film layer;

[0028] ③Mixing the random physical feature particles into the adhesive, diluting with solvent, then coating with the compound machine, and combining the first printing layer with the third plastic film layer; wherein, the bottom of the coating tank is provided with an airflow stirring device (the structural diagram is shown in the attached Figure 6 ), which comprises a gas inlet pipe and a guide pipe, the gas inlet pipe is communicated with the guide pipe, and the guide pipe is uniformly provided with gas outlet holes;

[0029] ④Coating the adhesive under the color ink layer to form the second adhesive layer;

[0030] ⑤Collecting the variable information and the random physical features, associating the variable information and the local or all random physical features through operation, uploading the database for query use;

[0031] 2) Printing on the substrate to form the second printing layer; the substrate is an adhesive substrate, which comprises a substrate layer, a third adhesive layer and a silicone oil paper layer;

[0032] 3) Using an automatic labeling machine to label the random identification mark layer on the second printing layer to form the random identification mark layer;

[0033] 4) Coating the adhesive on the random identification mark layer to combine with the first plastic film layer;

[0034] 5) Peeling off the silicone oil paper layer on the printing machine, then spraying the code under the third adhesive layer to form the digital information layer, and then combining the silicone oil paper layer; and associating the variable information of the digital information layer with the random identification mark layer;

[0035] 6) Die cutting the label while die cutting the easy-to-tear line corresponding to the position of the digital information layer.

[0036] In step ①, printing the solid color layer under the variable information.

[0037] In step ②, printing the local release layer under the third plastic film layer, and then printing the color ink layer.

[0038] In step ③, the diameter of the gas inlet pipe and the guide pipe is 6-8 mm, the gas pressure of the gas inlet pipe is 0.2-0.5 MPa, the hole spacing of the gas outlet hole is 2-3 cm, and the hole diameter of the gas outlet hole is 0.01-0.08 cm.

[0039] In step ③, the adhesive is CF-206, the solvent is ethyl acetate, and the mass ratio of the adhesive, the solvent and the random physical feature particles is 100:80:2.

[0040] In step ④, the adhesive is a high-temperature resistant glue, and a two-component pressure-sensitive adhesive is added with a curing agent to improve the cohesive force of the glue.

[0041] In step 4), the adhesive is UV pressure-sensitive adhesive, the film coating process is that the first plastic film layer is combined with other parts by using UV pressure-sensitive adhesive, other parts are coated with UV pressure-sensitive adhesive, and then combined with the first plastic film layer, after UV light curing, the UV pressure-sensitive adhesive is reacted to bond the two parts together. The advantage is that: since the random identification mark layer is a multi-layer structure with obvious convex, the UV pressure-sensitive adhesive is used for combination and then UV lamp curing, the liquid of the UV pressure-sensitive adhesive is flowing when not irradiated by UV light, the two layers are combined in the flowing state, the glue can be fully infiltrated, and then the UV light irradiation is carried out, the glue has pressure sensitivity and no flowing property, so that the convex edge position is free of film bubbles.

[0042] In step 5), the silicon oil paper layer is peeled off on the printing machine, then code spraying is carried out under the third adhesive layer to form a digital information layer, partial gloss oil is coated on the digital information layer area, and then the silicon oil paper layer is combined together; and the digital information layer is associated with the variable information of the random identification mark layer.

[0043] When the consumer identifies the authenticity, the variable information (i.e. the first printing layer information) of the mark is scanned, the random physical feature particle distribution is adjusted, and the authenticity of the anti-fake mark is identified by comparison.

[0044] 1. The variable information (i.e. the first printing layer information) of the mark is scanned, the random physical feature particle distribution is adjusted, and the authenticity of the anti-fake mark is identified by comparison.

[0045] 2. After the variable information is scanned and verified as a genuine product, the silicon oil paper layer is peeled off along the tear line, and the digital information layer can realize the functions of traceability, anti-fake, prize redemption and score accumulation.

[0046] 3. The random physical features of the random physical feature layer have a concave-convex feeling and can be picked out.

[0047] 4. When trying to maliciously take out the random identification mark layer from the label completely, the color ink layer corresponding to the local release layer is left, so that the label is not completely peeled off, the random identification mark is damaged, the secondary use of the random identification mark layer is avoided, and the risk of counterfeiting is reduced.

[0048] 5. When the label is transferred as a whole, it is easy to separate and damage from the tear line, so that the label is not complete and affects the secondary use.

[0049] Compared with the prior art, the beneficial effects of the present application are:

[0050] 1. The label can realize the verification of authenticity before purchase, solve the problem that the authenticity cannot be identified in the flow process, anyone can check the authenticity, and can decide whether to purchase after verifying the genuine product, thereby reducing unnecessary losses.

[0051] 2、The label of the present application is formed by associating the random physical features with variable information, which is difficult to reproduce, and the label has uniqueness and cannot be counterfeited.

[0052] 3、By scanning the variable information of the label, the distribution of the random feature particles can be adjusted, and the authenticity of the anti-counterfeiting label can be identified by comparison. In addition, the variable information can be scanned by software first, and then the distribution of the random feature particles is collected, and the system is compared automatically to determine the authenticity of the label. An anti-counterfeiting label which is difficult to counterfeit and can be quickly identified is formed.

[0053] 4、The label is destroyed after being peeled off, which can effectively prevent the secondary use of the label and has high anti-counterfeiting strength. The random physical features have concave-convex feeling and can be picked out. The random physical features exist between the two films (the second plastic film and the third plastic film), which avoids the risk of processing falling off.

[0054] 5、The preparation method of the present application adopts the method of embedding a small label into a large label, and the random physical features are prepared on the small label. The required amount of raw materials is small, the processing cost is low, the efficiency is high, and the yield is high. First, the small label is prepared, and then the small label is embedded into the large label. The random physical features are difficult to process, and the finished small label is embedded into the large label, which can improve the yield of the label and save cost. For the whole large label, once the random physical features are processed, the whole large label is damaged, which causes unnecessary waste.

[0055] 6、When coating the random physical feature particles, the adhesive is diluted with solvent, and the amount of random physical feature particles is controlled within a certain range, which can realize uniform coating of particles and avoid the risk of overflow between the two films.

[0056] 7、The present application can realize uniform coating of particles by installing airflow stirring device at the bottom of the coating tank, which fundamentally solves the problem of uneven coating of particles, saves manpower, and also improves the quality and aesthetics of such products, and the production efficiency is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is a layer structure schematic diagram of the present application glue face code magic particle feature identification large label;

[0058] Figure 2 is a layer structure schematic diagram of the random identification label layer of example 1;

[0059] Figure 3 is a layer structure schematic diagram of the random identification label layer of example 2;

[0060] Figure 4 is a layer structure schematic diagram of the present application glue face code magic particle feature identification large label;

[0061] Figure 5 is the apparent structure schematic diagram of the present application after the big label of gel surface code jet magic particle feature recognition is opened;

[0062] Figure 6 is the structure schematic diagram of the airflow stirring device of the present application;

[0063] In the figure: 1, the first plastic film layer; 2, the first adhesive layer; 3, the random identification mark layer; 3.1, the second plastic film layer; 3.2, the first printing layer; 3.3, the random physical feature layer; 3.4, the third plastic film layer; 3.5, the color ink layer; 3.6, the second adhesive layer; 3.7, the local release layer; 3.8, the solid color layer; 4, the second printing layer; 5, the base material layer; 6, the third adhesive layer; 7, the digital information layer; 8, the local varnish layer; 9, the silicone oil paper layer; 10, the easy-to-tear line. DETAILED DESCRIPTION

[0064] The present application will be further described below in combination with the drawings and examples.

[0065] Example 1

[0066] As shown in Figure 1 and Figure 2 , the big label of gel surface code jet magic particle feature recognition comprises, from top to bottom, the first plastic film layer 1, the first adhesive layer 2, the random identification mark layer 3, the second printing layer 4, the base material layer 5, the third adhesive layer 6 and the digital information layer 7,

[0067] The random identification mark layer 3 partially covers the second printing layer 4.

[0068] The random identification mark layer 3 comprises, from top to bottom, the second plastic film layer 3.1, the first printing layer 3.2, the random physical feature layer 3.3, the third plastic film layer 3.4, the color ink layer 3.5 and the second adhesive layer 3.6, the information of the first printing layer 3.2 includes variable information, the random physical feature layer 3.3 is composed of random physical features and adhesive, and there is a corresponding relationship between the variable information and the random physical features.

[0069] The information of the digital information layer 7 includes variable information (two-dimensional code), and the variable information (two-dimensional code) of the digital information layer 7 and the variable information (two-dimensional code) of the first printing layer 3.2 have a corresponding relationship; the corresponding relationship is realized by the following way: after code jetting is performed on the digital information layer 7, the variable information of the first printing layer 3.2 and the variable information of the code jetting are collected respectively to correspond.

[0070] The easy-to-tear line 10 is arranged on both sides of the digital information layer 7, and the variable information of the digital information layer 7 can be seen after the label is opened along the easy-to-tear line 10.

[0071] The above-mentioned magic particle is a random physical characteristic particle. The random physical characteristic is a fiber silk with metallic texture that can be recognized by naked eyes. The thickness of the random physical characteristic layer 3.3 is 20 μm.

[0072] The first plastic film layer 1 is a PP film with a thickness of 30 μm.

[0073] The second plastic film layer 3.1 is a PVC film with a thickness of 60 μm.

[0074] The third plastic film layer 3.4 is a PET film with a thickness of 50 μm.

[0075] The digital information layer 7 is provided with a silicone oil paper layer 9 below.

[0076] The preparation method thereof comprises the following steps:

[0077] 1) Preparation of the random identification mark layer 3:

[0078] ① Printing graphic information below the second plastic film layer 3.1 to form the first printing layer 3.2, wherein the graphic information contains variable information;

[0079] ② Printing a color ink layer 3.5 below the third plastic film layer 3.4;

[0080] ③ Mixing random physical characteristic particles into the adhesive, diluting with a solvent, and then using a compound machine to coat and compound the first printing layer 3.2 and the third plastic film layer 3.4 together; wherein an air flow stirring device (the structure diagram is shown in the attached drawing) is arranged at the bottom of the coating tank, the air flow stirring device comprises a gas inlet pipe and a guide pipe, the gas inlet pipe is communicated with the guide pipe, and the guide pipe is uniformly provided with gas outlet holes; Figure 3

[0081] ④ Coating the adhesive below the color ink layer 3.5 to form the second adhesive layer 3.6;

[0082] ⑤ Collecting the variable information and the random physical characteristic, associating the variable information and the local or whole random physical characteristic through operation, uploading the database for query use;

[0083] 2) Printing on the substrate to form the second printing layer 4; the substrate is an adhesive substrate, which comprises a substrate layer 5, a third adhesive layer 6 and a silicone oil paper layer 9;

[0084] 3) Using an automatic labeling machine to label the random identification mark layer 3 on the second printing layer 4 to form the random identification mark layer 3;

[0085] 4) Coating the adhesive above the random identification mark layer 3 to compound with the first plastic film layer 1;

[0086] ​5) In the printing machine, the silicon oil paper layer 9 is first peeled off, then the code is sprayed under the third adhesive layer 6 to form the digital information layer 7, and then the silicon oil paper layer 9 is compounded together; and the digital information layer 7 is associated with the variable information of the random identification mark layer 3.

[0087] 6) While die cutting the label, the easy-tear line 10 corresponding to the position of the digital information layer 7 is die cut.

[0088] In step ③, the diameter of the air inlet pipe and the catheter is 7 mm, the air pressure of the air inlet pipe is 0.4 MPa, the hole spacing of the air outlet hole is 2 cm, and the hole diameter of the air outlet hole is 0.04 cm. The adhesive is CF-206, the solvent is ethyl acetate, and the mass ratio of the adhesive, solvent, and random physical feature particles is 100:80:2.

[0089] In step ④, the adhesive is a high-temperature resistant glue, and a two-component pressure-sensitive adhesive is used to add a curing agent to improve the cohesive force of the glue.

[0090] In step 4), the adhesive is a UV pressure-sensitive adhesive, and the film coating process is that the first plastic film layer 1 and other parts are compounded together using a UV pressure-sensitive adhesive, other parts are coated with a UV pressure-sensitive adhesive, and then compounded together with the first plastic film layer 1. After UV light curing, the UV pressure-sensitive adhesive reacts to bond the two parts together. The advantage is that: since the random identification mark layer 3 is a multi-layer structure with obvious protrusions, the UV pressure-sensitive adhesive is used to compound first and then cured by UV light. The liquid is flowing when the UV pressure-sensitive adhesive is not exposed to UV light, and the two layers are compounded together in a flowing state. The glue can be fully infiltrated, and then exposed to UV light. The glue has pressure sensitivity and no flow, ensuring that there are no film bubbles on the edge of the protrusions.

[0091] When the consumer identifies the authenticity:

[0092] 1. By scanning the variable information of the mark (i.e. the first printed layer 3.2 information), the distribution of random physical feature particles can be adjusted, and the authenticity of the anti-fake mark can be identified by comparison. In addition, the software can first scan the variable information, then collect the distribution of random physical feature particles, and the system can automatically compare to determine the authenticity of the mark.

[0093] 2. After scanning the variable information and verifying that it is genuine, the easy-tear line 10 is opened, and the digital information layer 7 can be used for tracing, anti-fake, redemption, and points accumulation.

[0094] 3. The random physical features of the random physical feature layer 3.3 have a concave-convex feeling and can be picked out.

[0095] 4. When the mark is transferred as a whole, it can be easily separated and damaged at the easy-tear line 10, resulting in incomplete marks and affecting secondary use.

[0096] Embodiment 2

[0097] As shown in Figure 1 and Figure 3 The structure of the sticker is the same as that of Embodiment 1, except that:

[0098] A solid color layer 3.8 is arranged below the first printing layer 3.2. The solid color layer 3.8 is a white ink layer 3.5. During printing, multi-color printing is adopted, and one solid color layer 3.8 is printed below the first printing layer 3.2. The printing of the solid color layer 3.8 and the first printing layer 3.2 can be completed at one time.

[0099] A partial release layer 3.7 is arranged below the third plastic film layer 3.4.

[0100] A partial varnish layer 8 is arranged below the digital information layer 7.

[0101] The preparation method is the same as that of Embodiment 1, except that:

[0102] In step ①, a solid color layer 3.8 is printed below the variable information.

[0103] In step ②, after the partial release layer 3.7 is printed below the third plastic film layer 3.4, the color ink layer 3.5 is printed.

[0104] In step 5), the silicon oil paper layer 9 is first peeled off on the printing machine, then the code is sprayed below the third adhesive layer 6 to form the digital information layer 7, the partial varnish is coated on the area of the digital information layer 7, and then the silicon oil paper layer 9 is compounded together; and the digital information layer 7 is associated with the variable information of the random identification mark layer 3.

[0105] When the consumer identifies the authenticity:

[0106] 1. By scanning the variable information (i.e. the information of the first printing layer 3.2), the distribution of the random physical feature particles can be adjusted, and the authenticity of the anti-fake mark can be identified by comparison. In addition, the software can first scan the variable information, then collect the distribution of the random physical feature particles, and the system can automatically compare to determine the authenticity of the mark.

[0107] 2. After the variable information is scanned and verified as genuine, the easy-to-tear line 10 is opened, and the digital information layer 7 can realize the functions of traceability, anti-fake, redemption, and points accumulation.

[0108] 3. The random physical features of the random physical feature layer 3.3 have a concave-convex feeling and can be picked out.

[0109] 4、Try to maliciously take out the random identification mark layer 3 from the label completely, the color ink layer 3.5 corresponding to the partial release layer 3.7 is left, which causes the incomplete lifting, the random identification mark is damaged, the secondary use of the random identification mark layer 3 is avoided, and the risk of counterfeiting is reduced.

[0110] 5、When the mark is transferred as a whole, it is easy to separate and damage from the easy-to-tear line 10, resulting in incomplete mark and affecting secondary use.

[0111] Of course, the above content is only a preferred embodiment of the present application, not a limitation on other forms of the present application. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments. However, any simple modification, equivalent change and modification made according to the technical essence of the present application without departing from the technical scheme of the present application shall still fall within the protection scope of the present application.

Claims

1. A method for preparing a large label with inkjet-printed particle feature recognition, characterized in that: The glue surface code magic particle feature recognition large label, including first plastic film layer (1), first adhesive layer (2), random identification mark layer (3), second printing layer (4), substrate layer (5), third adhesive layer (6) and digital information layer (7) arranged in turn from top to bottom, The random identification mark layer (3) partially covers the second printing layer (4); The random identification mark layer (3) includes second plastic film layer (3.1), first printing layer (3.2), random physical feature layer (3.3), third plastic film layer (3.4), color ink layer (3.5) and second adhesive layer (3.6) arranged in turn from top to bottom, the information of the first printing layer (3.2) includes variable information, the random physical feature layer (3.3) is composed of random physical features and adhesive, and there is a corresponding relationship between the variable information and the random physical features; The information of the digital information layer (7) includes variable information, and the variable information of the digital information layer (7) has a corresponding relationship with the variable information of the first printing layer (3.2); Corresponding to the two sides of the digital information layer (7), a tear line (10) is arranged, and the variable information of the digital information layer (7) can be seen by tearing the label along the tear line (10); The random physical feature is at least one of particles, blocks, rings or fiber filaments recognizable by the naked eye; the thickness of the random physical feature layer (3.3) is 1-20 μm; The first printing layer (3.2) is provided with a solid color layer (3.8) below; The third plastic film layer (3.4) is provided with a local release layer (3.7) below; The digital information layer (7) is provided with a local gloss oil layer (8) below, and the force value of the local gloss oil layer (8) is 0.5-5 N / 25 mm; The preparation method of the glue surface code magic particle feature recognition large label includes the following steps: 1) Preparation of random identification mark layer (3): ① Print graphic information below the second plastic film layer (3.1) to form the first printing layer (3.2), wherein the graphic information contains variable information; ② Print color ink layer (3.5) below the third plastic film layer (3.4); ③ Mix random physical feature particles into the adhesive, dilute with solvent, then use the compound machine to coat, and the first printing layer (3.2) is compounded with the third plastic film layer (3.4), wherein the bottom of the coating trough is provided with an air flow stirring device, the air flow stirring device includes an air inlet pipe and a conduit, the air inlet pipe is in communication with the conduit, and the conduit is uniformly provided with air outlet holes; ④ Apply adhesive below the color ink layer (3.5) to form the second adhesive layer (3.6); ⑤ Collect variable information and random physical features, associate the variable information and part or all of the random physical features through operation, upload the database for query use; 2) Print on the substrate to form the second printing layer (4); the substrate is an adhesive substrate, including substrate layer (5), third adhesive layer (6) and silicone oil paper layer (9); 3) Use the automatic labeling machine to label the random identification mark layer (3) on the second printing layer (4) to form the random identification mark layer (3); 4) Coating adhesive on the random identification mark layer (3) and combining with the first plastic film layer (1); 5) First, peel the silicon oil paper layer (9) on the printing machine, then spray code under the third adhesive layer (6) to form the digital information layer (7), then composite the silicon oil paper layer (9) together; and associate the digital information layer (7) with the variable information of the random identification mark layer (3); 6) Die cutting the label and die cutting the easy-to-tear line (10) corresponding to the position of the digital information layer (7); In step 3, the diameter of the air inlet pipe and the catheter is 6-8mm, the air pressure of the air inlet pipe is 0.2-0.5MPa, the hole spacing of the air outlet hole is 2-3cm, and the hole diameter of the air outlet hole is 0.01-0.08cm; In step 3, the adhesive is CF-206, the solvent is ethyl acetate, and the mass ratio of the adhesive, solvent and random physical characteristic particles is 100:80:2; In step 4), the adhesive is UV pressure-sensitive adhesive, and the film coating process is that the first plastic film layer (1) and other parts are combined together using UV pressure-sensitive adhesive, the other parts are coated with UV pressure-sensitive adhesive, and then combined together with the first plastic film layer (1), after UV light curing, the UV pressure-sensitive adhesive reacts to bond the two parts together.

2. The preparation method of the rubber surface ink-jet code magic particle feature recognition large label according to claim 1, characterized in that: The first plastic film layer (1), the second plastic film layer (3.1) and the third plastic film layer (3.4) are PET, PE, PP or PVC film, the thickness of the first plastic film layer (1) is 10-30μm, and the thickness of the second plastic film layer (3.1) and the third plastic film layer (3.4) is 10-80μm respectively.

3. The preparation method of the glue face ink-jet code magic particle feature recognition large label according to claim 1, characterized in that: The digital information layer (7) is provided with a silicon oil paper layer (9) below.

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