A shrink ink anti-counterfeiting label and its preparation method

Abstract

The present invention discloses a shrinkage ink type anti-counterfeiting label and a preparation method thereof, which includes a printing substrate, and further includes a primer layer coated on the printing substrate, a color-permeable layer coated on the primer layer, and a raised dot ink layer located on the color-permeable layer; the raised dot ink layer is composed of a plurality of random raised dot-shaped UV ink blocks distributed on the color-permeable layer and formed by shrinking through mutual exclusion with the color-permeable layer; the random characteristics of the raised dot-shaped UV ink blocks are clear, the anti-counterfeiting performance is good, the cost is low, and the safety is high; the design of the wrinkled bulge, that is, the raised dot-shaped UV ink blocks are distributed between the wrinkled bulges, significantly increases the anti-wear ability of the raised dot-shaped UV ink blocks and has a longer storage time; the raised dot-shaped UV ink blocks are distributed to form an interference pattern, enabling this label to have a triple anti-counterfeiting function. When ultrasonic waves are used to form the interference pattern, it is found that the vibration of the air significantly accelerates the shrinkage speed, thus solving the problem of the long shrinkage time of the UV ink and rapidly improving the production capacity.

Description

Technical Field

[0001] The present invention relates to the field of anti-counterfeiting labels, and particularly to a shrinkage ink type anti-counterfeiting label and a preparation method thereof. Background Art

[0002] With the development of the economy, the contradiction between forgery and anti-counterfeiting has become increasingly acute and prominent; anti-counterfeiting technologies have gradually shifted from the traditional usage scenarios of passports, certificates, currencies, tickets, and securities produced by departments such as banks, customs, tax, finance, and public security to civilian use, and have broad application potential in fields such as tobacco and alcohol, food, medicine, health products, cosmetics, clothing, optical discs, as well as agricultural pesticides and fertilizers, auto parts, and daily necessities. With the upgrade and iteration of anti-counterfeiting label technologies, anti-counterfeiting labels suitable for various scenarios and applications have emerged. However, whether it is the combination of chips and anti-counterfeiting technologies or the combination of features such as particulate matter, the production cost remains high. Therefore, there is an urgent need in the market for a label or printing technology that can both meet the low-cost requirements and effectively conduct anti-counterfeiting. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned drawbacks and provide a shrinkage ink type anti-counterfeiting label and a preparation method thereof that have low cost, good effect, strong anti-counterfeiting performance, and can achieve fast, safe, and accurate anti-counterfeiting.

[0004] To achieve the above purpose, the specific solution of the present invention is as follows: A shrinkage ink type anti-counterfeiting label includes a substrate, and further includes a primer layer coated on the substrate, a color-through layer coated on the primer layer, and a bump ink layer located on the color-through layer; the bump ink layer is composed of a plurality of randomly distributed convex dot-shaped UV ink blocks that are formed by shrinking through mutual repulsion with the color-through layer and are distributed on the color-through layer; the color-through layer is evenly distributed with multiple parallel wrinkled ridges, and the convex dot-shaped UV ink blocks of the bump ink layer are distributed in the grooves between the wrinkled ridges; the distribution of the convex dot-shaped UV ink blocks conforms to double-wave interference patterns.

[0005] Preferably, due to random shrinkage, the size and shape of each convex dot-shaped UV ink block are different.

[0006] Preferably, an identification code area is also printed on the primer layer, and an identification code is printed on the identification code area.

[0007] Preferably, the primer layer and the bump ink layer have different colors.

[0008] A preparation method of a shrinkage ink type anti-counterfeiting label,

[0009] Step a: Print the primer layer on the substrate, and print the identification code on the non-identification code area of the primer layer;

[0010] Step b: Coat the color-through layer on the primer layer;

[0011] Step c: Print or spray UV ink on the color-permeable layer;

[0012] Step d: The shrinkage of the UV ink forms multiple convex dot-shaped UV ink blocks, and UV curing irradiation is used to completely cure them;

[0013] The color-permeable layer is prepared by screen printing UV ink or the color-permeable layer is a plastic film.

[0014] Preferably, if the color-permeable layer is prepared by screen printing UV ink, the specific preparation method of the color-permeable layer is: First, evenly print the UV ink on the primer layer by screen printing to form the first layer, and then use UV curing irradiation to make the curing degree of the first layer in the range of 50%-80%. Then, print strip-shaped wrinkles and bulges by screen printing, and then use UV curing irradiation to cure the wrinkles and bulges.

[0015] Preferably, if the color-permeable layer is a plastic film, the specific preparation device of the color-permeable layer includes a roller with convex ribs and a lower template with grooves, and the grooves cooperate with the convex ribs; the specific preparation method is: The plastic film is rolled between the heated roller and the lower template to form a color-permeable layer with wrinkles and bulges.

[0016] Preferably, between step c and step d, there is also step c1, and step c1 is: Two ultrasonic generators are respectively arranged in different directions of the printing substrate, and the sound waves emitted by the two ultrasonic generators form interference, prompting multiple convex dot-shaped UV ink blocks to be distributed at the interference wave peaks.

[0017] Preferably, the frequencies of the two ultrasonic generators are the same.

[0018] The beneficial effects of the shrinkage ink type anti-counterfeiting label of this solution are:

[0019] 1: The random characteristics of the convex dot-shaped UV ink blocks are clear, the anti-counterfeiting performance is good, the cost is low, and the security is high;

[0020] 2: The design of the wrinkles and bulges, that is, the convex dot-shaped UV ink blocks are distributed between the wrinkles and bulges, significantly increases the anti-wear ability of the convex dot-shaped UV ink blocks and has a longer storage time;

[0021] 3: The design of the wrinkles and bulges also achieves a rapid improvement in the collection efficiency and the reading and discrimination efficiency, enabling the label product to have the dual advantages of low cost and high reading efficiency;

[0022] 4: The convex dot-shaped UV ink blocks are distributed to form an interference pattern, endowing this label with triple anti-counterfeiting functions. First, the random features formed by the convex dot-shaped UV ink blocks themselves are used for the collection of anti-counterfeiting features and the discrimination by mobile terminals. Second, the convex dot-shaped UV ink blocks all have a certain thickness and can be identified by touch, that is, the presence or absence of a granular feeling. Third, the distribution of the convex dot-shaped UV ink blocks into an interference pattern forms a visually discriminable feature, that is, the presence or absence of an interference pattern.

[0023] 5. When using ultrasonic waves to form an interference pattern, it is found that the vibration of the air significantly accelerates the shrinkage speed, thus solving the problem of the long shrinkage time of UV ink and rapidly improving the production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the shrinkable anti-counterfeiting label without the setting of wrinkle bulges and interference patterns;

[0025] Figure 2 is Figure 1 the hierarchical demonstration diagram of the shrinkable anti-counterfeiting label;

[0026] Figure 3 is a top view schematic diagram of the arrangement of wrinkle bulges and convex dot-shaped UV ink blocks;

[0027] Figure 4 is a side view schematic diagram of the arrangement of wrinkle bulges and convex dot-shaped UV ink blocks;

[0028] Figure 5 is a schematic diagram of the convex dot-shaped UV ink blocks forming an interference pattern;

[0029] Figure 6 is a schematic diagram of the preparation device when the transparent layer is a plastic film;

[0030] Figure 7 is a device diagram of the method for preparing the interference pattern in step c1;

[0031] Figures 1 to 7 Explanation of the reference numerals in the drawings:

[0032] 1 - primer layer; 2 - identification code area; 3 - transparent layer; 31 - wrinkle bulge; 4 - convex ink layer; 41 - convex dot-shaped UV ink block; 5 - ultrasonic generator. DETAILED DESCRIPTION OF THE INVENTION

[0033] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments, and the scope of implementation of the present invention is not limited thereto.

[0034] As Figure 1 and Figure 2 shown:

[0035] A shrinkable ink - type anti - counterfeiting label according to this embodiment includes a substrate, and further includes an underlayer 1 coated on the substrate, a color - permeable layer 3 coated on the underlayer 1, and a bumpy ink layer 4 located on the color - permeable layer 3; the bumpy ink layer 4 is composed of a plurality of random bump - shaped UV ink blocks 41 distributed on the color - permeable layer 3 and formed by shrinking due to mutual exclusion with the color - permeable layer 3; due to random shrinkage, the size and shape of each bump - shaped UV ink block 41 are different. The substrate can be paper or other materials for printing labels. The underlayer 1 is a colored ink layer, which is used to form a color difference with the bumpy ink layer 4 to set off the bumpy ink layer 4 above it; the bumpy ink layer 4 is formed by the principle of mutual exclusion, that is, an ink mutually exclusive with the color - permeable layer 3 is coated on the color - permeable layer 3 by screen printing or spraying, and then the ink shrinks due to mutual exclusion with the color - permeable layer 3, thus forming a plurality of random bump - shaped UV ink blocks 41, that is, the bumpy ink layer 4 is composed of a plurality of random bump - shaped UV ink blocks 41 distributed on the color - permeable layer 3 and formed by shrinking due to mutual exclusion with the color - permeable layer 3; due to random shrinkage, the size and shape of each bump - shaped UV ink block 41 are not the same.

[0036] An identification code area 2 is also printed on the underlayer 1, and an identification code is printed on the identification code area 2. The identification code is a two - dimensional code. The color of the underlayer 1 is different from the color of the bumpy ink layer 4;

[0037] At the time of factory shipment, generally, information collection of the random features of the label is carried out through a collection device. A linear array camera is used to collect the features of the bumpy ink layer 4 of the irregular shrinkable ink - type anti - counterfeiting label and the two - dimensional code of the identification code area 2 layer and then transmitted to the server, that is, the collected photos are uploaded to the server. The features of the plurality of bump - shaped UV ink blocks 41 of each anti - counterfeiting random label are calculated into digital data by using an AI algorithm and stored in the server. During actual use, a mobile device is used to take a photo of the anti - counterfeiting label and upload it to the server. The server will search for the original data on the server through the two - dimensional code information in the anti - counterfeiting label picture uploaded by the mobile device and compare it with the data obtained by analyzing and calculating the features in the newly uploaded shrinkable ink - type anti - counterfeiting label picture to make a true - false judgment and feedback the query result to the mobile terminal; by using the above - mentioned scheme, the shrinkable ink - type anti - counterfeiting label described in this embodiment can effectively achieve anti - counterfeiting of random features at a relatively low production cost, and achieve a fast, safe, and accurate anti - counterfeiting identification effect through the cooperation of random features and the mobile terminal and the server. Through physical visual color changes, the anti - counterfeiting ability can be effectively increased, which is suitable for large - scale low - cost printing.

[0038] As Figure 2 and Figure 3 shown:

[0039] In this embodiment, the color-permeable layer 3 is evenly distributed with multiple parallel fold bulges 31, and the convex dot UV ink blocks 41 of the convex dot ink layer 4 are distributed in the grooves between the fold bulges 31. This feature brings obvious benefits: that is, the convex dot UV ink blocks 41 are distributed in the grooves, making it not easy for the convex dot UV ink blocks 41 to be worn off, because generally their thickness is lower than or equal to that of the fold bulges 31, so that the UV ink will not be worn, thus avoiding the situation of identification failure and error caused by the wear of the UV ink. When actually collecting, an unexpected effect was also found, that is, the collection speed increased significantly, the collection time was reduced by half, and the recognition speed of the mobile terminal also increased significantly. The reason is found to be: the convex dot UV ink blocks 41 are distributed in the grooves to form a band. Except that the shape and size of each convex dot UV ink block 41 are different, the distance between the convex dot UV ink blocks 41 on one band is also different. The visual scanning of the collection camera, including the fastest way of the mobile terminal, is to scan line by line. When set to scan line by line, the set line-by-line scanning width is the same as or close to the groove width, which means that the scanning rules and algorithms become very simplified, so that the scanning efficiency can be quickly improved.

[0040] As Figure 5 shown: In this embodiment, the distribution of the convex dot UV ink blocks 41 conforms to the double-wave interference pattern. The formation method is that during the label production process, two ultrasonic generators 5 are respectively arranged in different directions of the printing substrate. The frequencies of the two ultrasonic generators 5 are the same or similar. The sound waves emitted by the two ultrasonic generators 5 form interference, prompting multiple convex dot UV ink blocks 41 to be arranged quickly according to the interference wave peaks, that is: prompting multiple convex dot UV ink blocks 41 to quickly gather at multiple interference wave peaks, and after distribution, they are UV irradiated and cured to form. This can effectively improve the double anti-counterfeiting ability, that is, in addition to being recognized by the mobile terminal scan, when viewed with the naked eye, it can be seen that multiple convex dot UV ink blocks 41 are arranged according to the interference wave peaks to form a preliminary judgment. This method does not affect the randomness of the shape and size of each convex dot UV ink block 41 itself, thus not affecting the formation of random features.

[0041] This method also derives another effect. The efficiency of printing random anti-counterfeiting labels in the way of shrinking ink is generally relatively low, because the shrinkage of UV ink requires a certain amount of time. The UV ink can be irradiated and cured only after it slowly shrinks, and then it can be collected. However, the shrinkage time is long, which greatly affects the production and collection efficiency. This also leads to a small production capacity and low output of shrinkage ink anti-counterfeiting labels; when using ultrasonic waves to form an interference pattern, it was unexpectedly found that its vibration of the air significantly accelerates the shrinkage speed, thus solving the problem of long shrinkage time, and thus the production capacity is rapidly increased.

[0042] The preparation method of the above shrinkage ink anti-counterfeiting label includes the following steps:

[0043] Step a: Print a primer layer 1 on the substrate, and print an identification code on the non-identification code area 2 on the primer layer 1;

[0044] Step b: Coat a color-permeable layer 3 on the primer layer 1;

[0045] Step c: Print or spray UV ink on the color-permeable layer 3;

[0046] Step d: The shrinkage of the UV ink forms a plurality of convex dot-shaped UV ink blocks 41, and UV curing irradiation is used to completely cure them;

[0047] The color-permeable layer 3 is prepared by screen printing the UV ink or the color-permeable layer 3 is a plastic film.

[0048] Preferably, if the color-permeable layer 3 is prepared by screen printing the UV ink, the specific preparation method of the color-permeable layer 3 is: first, the UV ink is evenly printed on the primer layer 1 by screen printing to form a first layer, and then the first layer is cured to a curing degree in the range of 50%-80% by UV curing irradiation. Then, strip-shaped wrinkles 31 are printed by screen printing, and then the wrinkles 31 are cured by UV curing irradiation.

[0049] As Figure 6 shown: If the color-permeable layer 3 is a plastic film, the specific preparation device of the color-permeable layer 3 includes a roller with convex ribs and a lower template with grooves, and the grooves are matched with the convex ribs; the specific preparation method is: the plastic film is rolled between the heated roller and the lower template to form a color-permeable layer 3 with wrinkles 31; then the plastic film with wrinkles 31 is attached to the primer layer 1.

[0050] As Figure 7 shown: Preferably, between step c and step d, there is also step c1, and the step c1 is: Two ultrasonic generators 5 are respectively arranged in different directions of the substrate, and the sound waves emitted by the two ultrasonic generators 5 form interference, so as to promote a plurality of convex dot-shaped UV ink blocks 41 to be distributed at the interference wave peaks; the frequencies of the two ultrasonic generators 5 are the same.

[0051] This method can quickly produce a shrink ink anti-counterfeiting label with obvious interference features. The random features of the convex dot-shaped UV ink blocks 41 are clear, with good anti-counterfeiting performance, low cost, and high security. The design of the wrinkled protrusions 31, that is, the convex dot-shaped UV ink blocks 41 are distributed between the wrinkled protrusions 31, significantly increases the anti-wear ability of the convex dot-shaped UV ink blocks 41 and prolongs the storage time. The design of the wrinkled protrusions 31 also achieves a rapid improvement in the collection efficiency and the reading and discrimination efficiency, enabling the label product to have the dual advantages of low cost and high reading efficiency. The distribution of the convex dot-shaped UV ink blocks 41 forms an interference pattern, endowing this label with triple anti-counterfeiting functions. First, the random features formed by the convex dot-shaped UV ink blocks 41 themselves are used for the collection of anti-counterfeiting features and the discrimination by mobile terminals. Second, the convex dot-shaped UV ink blocks 41 all have a certain thickness and can be identified by touch, that is, the presence or absence of a granular feeling. Third, the distribution of the convex dot-shaped UV ink blocks 41 into an interference pattern forms a visually discriminable feature, that is, the presence or absence of an interference pattern. When using ultrasonic waves to form an interference pattern, it is found that the vibration of the air significantly accelerates the shrinkage speed, thus solving the problem of the long shrinkage time of UV ink and rapidly improving the production capacity.

[0052] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features, and principles described in the scope of the present invention patent application are included in the protection scope of the present invention patent application.

Claims

1. A shrink ink anti-counterfeiting label, including a substrate, and further including an undercoat layer (1) coated on the substrate, a color-permeable layer (3) coated on the undercoat layer (1), and a raised dot ink layer (4) located on the color-permeable layer (3); characterized in that: The bump ink layer (4) is composed of a plurality of random bump-shaped UV ink blocks (41) formed by shrinkage through mutual exclusion with the color-permeable layer (3) and distributed on the color-permeable layer (3); the color-permeable layer (3) is evenly distributed with a plurality of parallel fold ridges (31), and the bump-shaped UV ink blocks (41) of the bump ink layer (4) are distributed in the grooves between the fold ridges (31); the distribution of the bump-shaped UV ink blocks (41) conforms to the double-wave interference pattern. Two ultrasonic generators (5) are respectively arranged in different directions of the printing substrate, and the sound waves emitted by the two ultrasonic generators (5) form interference, prompting a plurality of bump-shaped UV ink blocks (41) to be distributed at the interference wave peaks.

2. The shrinkage ink type anti-counterfeiting label according to claim 1, wherein: Due to random shrinkage, the size and shape of each bump-shaped UV ink block (41) are different.

3. The shrinkage ink type anti-counterfeiting label according to claim 1, characterized in that: An identification code area (2) is also printed on the primer layer (1), and an identification code is printed on the identification code area (2).

4. The shrinkage ink type anti-counterfeiting label according to claim 3, characterized in that: The color of the primer layer (1) is different from that of the bump ink layer (4).

5. A preparation method of a shrinkage ink type anti-counterfeiting label, characterized in that: Step a: Print the primer layer (1) on the printing substrate, and print the identification code on the non-identification code area (2) of the primer layer (1). Step b: Cover the color-permeable layer (3) on the primer layer (1). Step c: Print or spray UV ink on the color-permeable layer (3). Step d: The shrinkage of the UV ink forms a plurality of bump-shaped UV ink blocks (41), and UV curing irradiation is used to completely cure it. The color-permeable layer (3) is prepared by screen printing of UV ink or the color-permeable layer (3) is a plastic film. Between step c and step d, there is also step c1, and the step c1 is: Two ultrasonic generators (5) are respectively arranged in different directions of the printing substrate, and the sound waves emitted by the two ultrasonic generators (5) form interference, prompting a plurality of bump-shaped UV ink blocks (41) to be distributed at the interference wave peaks.

6. The preparation method of a shrinkage ink type anti-counterfeiting label according to claim 5, characterized in that: If the color-permeable layer (3) is prepared by screen printing of UV ink, the specific preparation method of the color-permeable layer (3) is: First, evenly print the UV ink on the primer layer (1) by screen printing to form a first layer, and then use UV curing irradiation to make the curing degree of the first layer in the range of 50%-80%. Then, print strip-shaped fold ridges (31) by screen printing, and then use UV curing irradiation to cure the fold ridges (31).

7. The preparation method of a shrinkable ink anti-counterfeiting label according to claim 5, characterized in that: If the color-permeable layer (3) is a plastic film, the specific preparation device of the color-permeable layer (3) includes a roller with convex ribs and a lower template with grooves, and the grooves are matched with the convex ribs; the specific preparation method is: The plastic film is rolled between the heated roller and the lower template to form the color-permeable layer (3) with fold ridges (31).

8. The preparation method of a shrinkage ink type anti-counterfeiting label according to claim 5, characterized in that: The frequencies of the two ultrasonic generators (5) are the same.

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