An encrypted digital identification and preparation method thereof

Abstract

The invention discloses an encrypted digital label and a preparation method thereof. The label comprises a base film layer and an information layer; the information layer comprises a first structure area and a second structure area; the first structure area comprises a first optically variable information layer, a color layer and a first coating layer; the first optically variable information layer is formed on the surface of the base film layer, and has a first microstructure that can display a holographic pattern under the action of the first coating layer, and the first microstructure is embedded in the color layer; the second structure area comprises a transparent label layer, a color layer and the first coating layer; the transparent label layer is formed on the surface of the base film layer, and has a transparent second microstructure that can form an anti-counterfeiting code, and the second microstructure is embedded in the color layer; when the first optically variable information layer, the transparent label layer and the color layer are separated through the base film layer, the first microstructure on the first optically variable information layer forms a holographic pattern on the surface of the color layer, and the second microstructure on the transparent label layer forms an anti-counterfeiting code on the surface of the color layer; the label provided by the invention can distinguish the authenticity of a product from the surface, and prevent the label from being reused.

Description

Technical Field

[0001] The present invention belongs to the technical field of anti-counterfeiting devices, and more specifically, relates to an encrypted digital label and a preparation method thereof, which can realize high-end anti-counterfeiting and variable information extraction functions of products, and at the same time have the functions and advantages of anti-counterfeiting, anti-revealing and disposable use. Background Art

[0002] In order to protect the legitimate rights and interests of consumers and merchants, merchants use a variety of anti-counterfeiting methods to mark goods, and holographic anti-counterfeiting labels are one of them. However, the current anti-counterfeiting labels are easy to copy or reuse, and most anti-counterfeiting labels can be used again by illegal persons after use, making it difficult to distinguish the authenticity of anti-counterfeiting labels, and the mixture of good and bad ones has caused the situation that anti-counterfeiting labels cannot prevent counterfeiting, seriously infringing the legitimate interests of merchants, and even endangering the health and life of consumers. Therefore, the society is in urgent need of a more high-end, difficult to reuse, easy to use, and easy to identify anti-counterfeiting product. In this context, it is even more necessary to study the anti-tear-off function of the label to enhance the anti-counterfeiting function of the label.

[0003] At present, digital labels such as QR codes and barcodes are widely used in the field of product information tracing. Some products even use the "one item, one code" method to highlight their high-end positioning. However, it is difficult for most products to take into account the anti-counterfeiting upgrade function after the anti-counterfeiting image and the anti-counterfeiting code are combined, and basically only play the advantages of one of the anti-counterfeiting forms. For example, one part of the label is that the anti-counterfeiting image is damaged after it is uncovered and cannot be used again, which only takes advantage of the one-time feature of the anti-counterfeiting image; another part is that the anti-counterfeiting code is hidden behind the image and can only be revealed after the pattern is completely uncovered, which only takes advantage of the characteristics of the anti-counterfeiting code. However, the shortcomings of these two methods are easy to be exploited by opportunists. For example, when the label with an anti-counterfeiting image as the function is quickly peeled off, the image can be intact, that is, it can be peeled off together with the self-adhesive sticker. "The world's martial arts are invincible only by speed" is said to this truth. In this way, the intact label can be reused repeatedly. Labels with anti-counterfeiting codes as the function are more likely to be exploited. This is related to their implementation process. In order to highlight the integrity of the anti-counterfeiting code, the anti-counterfeiting image is often designed to be difficult to destroy. When the anti-counterfeiting image is peeled off, the complete anti-counterfeiting code can be exposed. In this way, the anti-counterfeiting image can be easily pasted back for use, while the anti-counterfeiting code is likely to be replaced. The uniqueness and correctness of the anti-counterfeiting code are difficult to guarantee. What's more annoying is that consumers cannot tell from the surface of the label whether the anti-counterfeiting code has been used.

[0004] Therefore, it is urgent to develop a logo that can not only ensure that the anti-counterfeiting image cannot be used a second time, but also distinguish the use of the anti-counterfeiting code from the surface. Summary of the invention

[0005] In response to at least one defect or improvement need in the prior art, the present invention provides an encrypted digital identification and a method for preparing the same, which aims to solve the problem that the current common digital identification can still be reused after being uncovered and the anti-counterfeiting effect cannot be guaranteed.

[0006] To achieve the above object, according to a first aspect of the present invention, there is provided an encrypted digital label, comprising a base film layer and an information layer; the information layer comprises a first structure area and a second structure area;

[0007] The first structural area comprises a first optically variable information layer, a color layer and a first coating layer which are stacked in sequence; the first optically variable information layer is formed on the surface of the base film layer, and has a first microstructure which can display a holographic pattern under the action of the first coating layer, and the first microstructure is embedded in the color layer;

[0008] The second structural area includes a transparent identification layer, a color layer and a first coating layer stacked in sequence; the transparent identification layer is formed on the surface of the base film layer, has a transparent second microstructure that can form an anti-counterfeiting code, and the second microstructure is embedded in the color layer;

[0009] When the first optically variable information layer, the transparent identification layer and the color layer are separated by the base film layer, the first microstructure on the first optically variable information layer forms a holographic pattern on the surface of the color layer, and the second microstructure on the transparent identification layer forms an anti-counterfeiting code on the surface of the color layer.

[0010] Preferably, in the above-mentioned encrypted digital identification, the information layer includes a third structure area;

[0011] The third structure area includes a second optically variable information layer and a first coating layer stacked in sequence; the second optically variable information layer is formed on the surface of the base film layer and has a third microstructure that can display a positioning mark under the action of the first coating layer.

[0012] Preferably, in the above-mentioned encrypted digital identification, the information layer includes a third structure area;

[0013] The third structure area includes a second optically variable information layer, a second coating layer, a color layer and a first coating layer stacked in sequence; the second optically variable information layer is formed on the surface of the base film layer and has a third microstructure that can display a positioning mark under the action of the second coating layer.

[0014] Preferably, in the above-mentioned encrypted digital mark, the peeling value between the first optically variable information layer, the transparent mark layer and the color layer is 0.1-0.5 N / cm.

[0015] Preferably, in the above-mentioned encrypted digital mark, the color layer is formed by mixing a thermoplastic resin with a softening point of 120-250° C. and a metal complex dye, wherein the mass proportion of the metal complex dye is 5%-25%.

[0016] Preferably, in the above-mentioned encrypted digital mark, the thermoplastic resin is selected from one or more of acrylic resin, polyester resin, polyurethane, polystyrene, and styrene-acrylic copolymer.

[0017] Preferably, in the above-mentioned encrypted digital mark, the dyne value of the surface of the base film layer on the side in contact with the first optically variable information layer and the transparent mark layer is greater than 48.

[0018] Preferably, in the above-mentioned encrypted digital identification, the coating is a metal aluminum layer or a dielectric layer;

[0019] The aluminum value thickness of the metal aluminum layer is 300 to 500 AI;

[0020] The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.

[0021] Preferably, in the above-mentioned encrypted digital mark, the first microstructure is obtained by curing the coating after transferring the holographic pattern through a master.

[0022] Preferably, in the above-mentioned encrypted digital mark, the second microstructure is an anti-counterfeiting code having digital information formed by inkjet forming of a transparent material and then solidified, and the anti-counterfeiting code is invisible before the transparent mark layer is separated from the color layer.

[0023] Preferably, the encrypted digital mark, the third microstructure is obtained by curing the coating after transferring the positioning mark through the master.

[0024] The curing method may be cross-linking curing, heating curing, ultraviolet light curing, etc. As a more preferred method, ultraviolet light curing which can be performed at room temperature is adopted, and the corresponding coating is a UV material.

[0025] According to a second aspect of the present invention, there is also provided a method for preparing an encrypted digital identifier, comprising the following steps:

[0026] S1: providing a base film layer, forming a first microstructure on a first area of ​​the base film layer, and forming a transparent second microstructure on a second area of ​​the base film layer;

[0027] S2: coating a color layer on the first microstructure and the second microstructure, and the color layer penetrates into the gaps between the first microstructure and the second microstructure respectively;

[0028] S3: forming a first coating layer on the surface of the color layer, under the action of the first coating layer, the first microstructure forms and displays a holographic pattern;

[0029] When the first microstructure, the second microstructure and the color layer are separated by the base film layer, the first microstructure can form a holographic pattern on the surface of the color layer, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer.

[0030] According to a third aspect of the present invention, there is also provided a method for preparing an encrypted digital identifier, comprising the following steps:

[0031] S1: providing a base film layer, forming a first microstructure and a third microstructure on a first region and a third region of the base film layer respectively, and forming a transparent second microstructure on a second region of the base film layer;

[0032] S2: coating a color layer on the first microstructure and the second microstructure, and the color layer penetrates into the gaps between the first microstructure and the second microstructure respectively;

[0033] S3: forming a first coating layer on the surface of the color layer and the third microstructure, under the effect of the first coating layer, the first microstructure forms and displays a holographic pattern, and the third microstructure forms and displays a positioning mark;

[0034] When the first microstructure, the second microstructure and the color layer are separated by the base film layer, the first microstructure can form a holographic pattern on the surface of the color layer, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer.

[0035] According to a fourth aspect of the present invention, there is also provided a method for preparing an encrypted digital identifier, comprising the following steps:

[0036] S1: providing a base film layer, forming a first microstructure and a third microstructure on a first region and a third region of the base film layer respectively, and forming a transparent second microstructure on a second region of the base film layer;

[0037] S2: forming a second coating on the first microstructure, the second microstructure, and the third microstructure, removing the second coating on the first microstructure and the second microstructure, and retaining the second coating on the third microstructure; under the action of the second coating, the third microstructure forms and displays a positioning mark;

[0038] S3: coating a color layer on the first microstructure, the second microstructure and the second coating layer, and the color layer penetrates into the gaps of the first microstructure and the second microstructure respectively;

[0039] S4: forming a first coating layer on the surface of the color layer, under the action of the first coating layer, the first microstructure forms and displays a holographic pattern;

[0040] When the first microstructure, the second microstructure and the color layer are separated by the base film layer, the first microstructure can form a holographic pattern on the surface of the color layer, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer.

[0041] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0042] (1) The encrypted digital label and its preparation method provided by the present invention can observe the holographic pattern in the first structural area through the base film layer before the label is uncovered; the anti-counterfeiting code in the second structural area is "hidden" and cannot be directly observed; after the label is uncovered, the anti-counterfeiting code information hidden in the second microstructure in the second structural area is separated from the color layer, and a visible colored anti-counterfeiting code is presented on the color layer. The anti-counterfeiting image and the anti-counterfeiting code in the label are in the same layer to prevent them from being pasted back together after being uncovered; both the anti-counterfeiting image and the anti-counterfeiting code are colored after being exposed, which is helpful to distinguish whether the label has been used.

[0043] (2) The encrypted digital label and preparation method provided by the present invention, the anti-counterfeiting code constitutes a part of the anti-counterfeiting image as secret information. When the label is peeled off after use, the entire anti-counterfeiting image and the anti-counterfeiting code are separated from the base film, the anti-counterfeiting pattern is brighter, and the anti-counterfeiting code is visible; if the base film layer is pasted back, the naked eye can distinguish the destructiveness, and the recognition is high and cannot be used a second time, thus playing the role of anti-counterfeiting encryption. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a cross-sectional view of a first structural area in an encrypted digital identification provided by an embodiment of the present invention;

[0045] Figure 2 is a cross-sectional view of the second structural area in the encrypted digital identification provided by an embodiment of the present invention;

[0046] Figure 3 It is a first structural cross-sectional view of the third structural area in the encrypted digital identification provided by an embodiment of the present invention;

[0047] Figure 4 It is a second structural cross-sectional view of the third structural area in the encrypted digital identification provided by an embodiment of the present invention;

[0048] In all the drawings, the same reference numerals represent the same technical features, specifically: 101 - base film layer; 102 - first optically variable information layer; 103 - transparent identification layer; 104 - color layer; 105, 108 - coating layer; 106 - self-adhesive layer; 107 - second optically variable information layer. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] The encrypted digital label provided by the present invention, under the premise of playing the role of anti-counterfeiting encryption, ensures that the anti-counterfeiting image is difficult to be pasted with the anti-counterfeiting code again, and can effectively prevent the secondary use of the encrypted digital label. Even if the two are pasted again, consumers can easily distinguish them from the surface of the label, and then identify the authenticity of the product, thereby improving the anti-counterfeiting level.

[0051] The structure and preparation method of the encrypted digital identification provided by the present invention are described in detail below in conjunction with the embodiments and drawings.

[0052] Embodiment 1

[0053] The encrypted digital logo provided in this embodiment includes a base film layer and an information layer stacked in sequence. The base film layer can be made of various conventional thin film materials suitable for processing laser holographic patterns, such as PET biaxially stretched film, etc. It is the supporting structure of the entire encrypted digital logo and plays a role in covering and protecting the entire encrypted digital logo. Generally speaking, the base film layer is preferably a transparent structure so that the information content in other layer structures of the encrypted digital logo can be obtained through the layer structure.

[0054] The information layer includes a first structure area and a second structure area; Figure 1 is a cross-sectional view of the first structural area in the encrypted digital logo, Figure 2 It is a cross-sectional view of the second structural area in the encrypted digital logo.

[0055] See also Figure 1 As shown, the first structure area includes a first optically variable information layer 102, a color layer 104 and a coating layer 105 which are stacked in sequence; the first optically variable information layer 102 is formed on the surface of the base film layer 101, and has a first microstructure that can display a holographic pattern under the action of the coating layer 105, and the first microstructure is embedded in the color layer 104;

[0056] The first optically variable information layer 102 is attached to the base film layer 101 and is the carrier of the first microstructure in this embodiment. In this embodiment, one or more first microstructures capable of forming a holographic pattern that plays an anti-counterfeiting role are arranged on the side of the first optically variable information layer 102 away from the base film layer 101. In a specific example, the first microstructure is obtained by UV coating after transferring the holographic pattern through the master plate and then curing it with ultraviolet light. Under the action of the coating 105, the first microstructure can present a holographic pattern based on diffraction, monochrome, dynamic, isotopic, depth, holographic lens, purple light and cat's eye, platinum relief, zero-order diffraction, nano-optics and other visual effects, and form a certain information expression. In the preparation process of the encrypted digital logo in this embodiment, the holographic pattern can be used to provide basic information including the manufacturer, brand logo, etc., and can also be used to produce information prompting consumers to uncover the authenticity of the product to verify the identity, etc., without specific restrictions.

[0057] A color layer 104 of a certain thickness is arranged between the first optically variable information layer 102 and the coating layer 105, and the first microstructure on the first optically variable information layer 102 is embedded in the interior of the color layer 104; with such a design, when the first optically variable information layer 102 and the color layer 104 are separated by the base film layer 101, the first microstructure on the first optically variable information layer 102 can form a holographic pattern on the surface of the color layer 104.

[0058] The main function of the coating 105 is to prevent light from passing through completely. When the encrypted digital logo is used, after the light is incident, reflection is formed at the interface between the coating 105 and the first microstructure, so that the holographic pattern can be presented. The coating 105 can be a metal aluminum layer or a dielectric layer, and the metal aluminum layer and the dielectric layer can be prepared by vacuum evaporation. When the metal aluminum layer is used, the aluminum value thickness is 300 to 500 AI. The dielectric layer is selected from any one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.

[0059] The color layer 104 is arranged closely against the first optically variable information layer 102. In the present embodiment, the color layer is formed by mixing a thermoplastic resin having a softening point of 120 to 250°C and a metal complex dye, wherein the thermoplastic resin may be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene, and styrene-acrylic copolymer; the mass of the metal complex dye accounts for 5% to 25% of the total mass of the thermoplastic resin and the metal complex dye, and the color thereof is not specifically limited and the color may be selected arbitrarily according to the needs.

[0060] See also Figure 2 As shown, the second structural area includes a transparent identification layer 103, a color layer 104 and a coating layer 105 which are stacked in sequence; the transparent identification layer 103 is formed on the surface of the base film layer 101, and has a transparent second microstructure that can form an anti-counterfeiting code, and the second microstructure is embedded in the color layer 104;

[0061] The transparent identification layer 103 is attached to the base film layer 101 and is the carrier of the second microstructure in this embodiment. In this embodiment, one or more transparent second microstructures capable of forming an anti-counterfeiting code are provided on the side of the transparent identification layer 103 away from the base film layer 101, and the transparent second microstructure cannot be directly observed through the base film layer 101. In a specific example, the second microstructure is an anti-counterfeiting code with digital information formed by inkjet printing of a transparent UV material and then cured by ultraviolet light. The anti-counterfeiting code is not visible before the transparent identification layer is separated from the color layer. Anti-counterfeiting codes include but are not limited to QR codes, bar codes, and verification codes. In an example, QR code and bar code information are mainly used to provide functions such as product logistics management, product traceability, and big data analysis. Verification code information can give corporate marketing, anti-counterfeiting verification, member points, consumer management and other functions without specific restrictions.

[0062] Since the second microstructure is transparent, the second microstructure cannot be observed through the base film layer 101 before the transparent identification layer 103 is separated from the color layer 104, and the anti-counterfeiting code information corresponding to the second microstructure is "hidden"; and when the transparent identification layer 103 is separated from the color layer 104 through the base film layer 101, the second microstructure on the transparent identification layer 103 can form an anti-counterfeiting code on the surface of the color layer 104, and the anti-counterfeiting code information hidden by the second microstructure is separated from the color layer 104, and a visible colored anti-counterfeiting code is presented on the color layer 104, and its color is the same as that of the color layer 104.

[0063] It should be pointed out that, different from the first structural area, the second structural area may not be provided with the plating layer 105, which does not have any impact on the hiding and displaying of the anti-counterfeiting code.

[0064] The color layer 104 is arranged closely against the transparent identification layer 103. In the present embodiment, the color layer is formed by mixing a thermoplastic resin having a softening point of 120 to 250° C. and a metal complex dye, wherein the thermoplastic resin may be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene, and styrene-acrylic copolymer; the mass of the metal complex dye accounts for 5% to 25% of the total mass of the thermoplastic resin and the metal complex dye, and the color thereof is not specifically limited and the color may be selected as required.

[0065] In order to ensure that the first optically variable information layer 102, the transparent logo layer 103 and the color layer 104 can be separated smoothly, in this embodiment, the peeling value between the first optically variable information layer 102, the transparent logo layer 103 and the color layer 104 is set between 0.1 and 0.5 N / cm. If the peeling value is too small, the adhesion between the first optically variable information layer 102, the transparent logo layer 103 and the color layer 104 is insufficient, and delamination is likely to occur; if the peeling value is too large, the user cannot smoothly uncover the first optically variable information layer 102 and the transparent logo layer 103; both of the above situations will affect the product quality of the encrypted digital logo.

[0066] In order to ensure that the first optically variable information layer 102 and the color layer 104 can be separated smoothly through the base film layer 101, and the transparent identification layer 103 and the color layer 104 can be separated through the base film layer 101, the surface of the base film layer 101 needs to have a certain roughness to ensure that there is a considerable degree of bonding between the base film layer 101 and the first optically variable information layer 102, and between the base film layer 101 and the transparent identification layer 103; for this purpose, in this embodiment, the surface dyne value of the base film layer 101 is greater than 48, and the thickness is between 15 and 30 um.

[0067] In this embodiment, the surface of the coating layer 105 in the first structural area, the coating layer 105 in the second structural area, or the color layer 104 is also provided with a self-adhesive layer 106, which is mainly used to attach the encrypted digital logo to the surface of the marker. Furthermore, the surface of the self-adhesive layer 106 is compounded with silicone oil paper to obtain a complete encrypted digital logo; when in use, the silicone oil paper is peeled off, and the encrypted digital logo can be attached to the surface of the marker through the self-adhesive layer 106.

[0068] The encrypted digital label provided in this embodiment can observe the holographic pattern in the first structural area through the base film layer before it is uncovered; the anti-counterfeiting code in the second structural area is "hidden" and cannot be directly observed; after it is uncovered, the anti-counterfeiting code information hidden in the second microstructure in the second structural area is separated from the color layer, and a visible colored anti-counterfeiting code is presented on the color layer. In this solution, the anti-counterfeiting image and the anti-counterfeiting code are in the same layer to prevent them from being pasted back for use after being uncovered; both the anti-counterfeiting image and the anti-counterfeiting code are colored after being exposed, which is helpful to distinguish whether the label has been used.

[0069] This embodiment also provides a method for preparing the above-mentioned encrypted digital identification, which specifically includes the following steps:

[0070] Step 1: providing a base film layer 101, forming a first microstructure on a first area of ​​the base film layer 101, and forming a transparent second microstructure on a second area of ​​the base film layer 101;

[0071] The base film layer 101 is made of a transparent film material suitable for processing laser holographic patterns, with a thickness of 15 to 30 um and a surface dyne value of the base film layer greater than 48.

[0072] Step 2: coating the color layer 104 on the first microstructure and the second microstructure, and the color layer 104 penetrates into the gaps between the first microstructure and the second microstructure respectively;

[0073] The color layer is a mixture of a thermoplastic resin with a softening point of 120-250°C and a metal complex dye. The thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene, and styrene-acrylic copolymer; the mass of the metal complex dye accounts for 5%-25% of the total mass of the thermoplastic resin and the metal complex dye.

[0074] Step 3: forming a coating layer 105 on the surface of the color layer 104, under the action of the coating layer 105, the first microstructure forms and displays a holographic pattern for anti-counterfeiting;

[0075] The coating 105 is a metal aluminum layer with an aluminum value thickness of 300-500AI, or a dielectric layer with a light transmittance of 60-80%. The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide.

[0076] Before the second microstructure is separated from the color layer 104, the transparent second microstructure cannot be directly observed through the base film layer 101; when the first microstructure, the second microstructure and the color layer 104 are separated through the base film layer 101, the first microstructure can form a holographic pattern on the surface of the color layer 104, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer 104, and the color of the holographic pattern and the anti-counterfeiting code is the same as that of the color layer 104.

[0077] Step 4: coating the coating layer 105 with a self-adhesive to form a self-adhesive layer 106; applying a composite silicone oil paper on the self-adhesive layer 106 to obtain an encrypted digital mark.

[0078] The following is a specific preparation process of the method for preparing the above-mentioned encrypted digital logo, which specifically includes:

[0079] 1): UV ink is coated on the base film layer, and then the holographic pattern is transferred to the first area on the base film layer through a metal nickel plate, and then cured by ultraviolet light to obtain a universal information area;

[0080] 2): Spray transparent UV ink on the second area without UV ink on the base film layer, and then cure it with ultraviolet light. The pattern formed by the transparent ink is an anti-counterfeiting code carrying digital information, which is a specific information area;

[0081] 3) coating the general information area and the specific information area with a color layer, specifically, coating the general information area and the specific information area with a solution of a thermoplastic acrylic resin with a softening point of 120 to 250° C., a metal complex dye and an organic solvent by a coating machine, and then drying by infrared heating to obtain the color layer;

[0082] 4): Vacuum-plating aluminum or dielectric ZnS on the surface of the color layer;

[0083] 5): Apply self-adhesive sticker on the aluminum layer or dielectric layer, and then compound with silicone oil paper to obtain encrypted digital identification.

[0084] Embodiment 2

[0085] The encrypted digital identification provided in this embodiment includes a base film layer and an information layer stacked in sequence. The information layer includes a first structural area, a second structural area and a third structural area; the first structural area and the second structural area are the same as those in the first embodiment and will not be described in detail; the composition and function of the third structural area are further described in detail below.

[0086] According to different preparation processes, the composition of the third structural zone mainly includes the following two types:

[0087] (1) Structure 1: Figure 3 It is the first structural cross-sectional view of the third structural area in the encrypted digital logo; see Figure 3 As shown, the first structure area includes a second optically variable information layer 107 and a coating layer 105 which are stacked in sequence; the second optically variable information layer 107 is formed on the surface of the base film layer 101 and has a third microstructure that can display a positioning mark under the action of the coating layer 105.

[0088] The second optically variable information layer 107 is attached to the base film layer 101 and is a carrier of the third microstructure in this embodiment. In this embodiment, one or more third microstructures capable of forming a positioning cursor are arranged on the side of the second optically variable information layer 107 away from the base film layer 101. In a specific example, the third microstructure is obtained by UV coating after transferring the holographic pattern through the master and then curing it with ultraviolet light.

[0089] The main function of the coating 105 is to prevent light from completely passing through. When the encrypted digital logo is in use, after the light is incident, a reflection is formed at the interface between the coating 105 and the third microstructure, so that the positioning cursor can be presented. Under the action of the coating 105, the third microstructure can form a positioning cursor that can be directly observed through the base film layer 101. The shape of the positioning cursor is not specifically limited. When the manufacturer of the logo attaches the encrypted digital logo to the logo object, the positioning cursor can be used to identify and locate the position of the encrypted digital logo to achieve accurate attachment.

[0090] The coating 105 can be a metal aluminum layer or a dielectric layer, and both the metal aluminum layer and the dielectric layer can be prepared by vacuum evaporation. When the metal aluminum layer is used, the aluminum value thickness is 300-500 AI. The dielectric layer is selected from any one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.

[0091] This embodiment also provides a method for preparing the above-mentioned encrypted digital identification, which specifically includes the following steps:

[0092] Step 1: providing a base film layer 101, forming a first microstructure and a third microstructure on the first region and the third region of the base film layer 101 respectively, and forming a transparent second microstructure on the second region of the base film layer 101;

[0093] The base film layer 101 is made of a transparent film material suitable for processing laser holographic patterns, with a thickness of 15 to 30 um and a surface dyne value of the base film layer greater than 48.

[0094] Step 2: coating the color layer 104 on the first microstructure and the second microstructure, and the color layer 104 penetrates into the gaps between the first microstructure and the second microstructure respectively;

[0095] The color layer is a mixture of a thermoplastic resin with a softening point of 120-250°C and a metal complex dye. The thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene, and styrene-acrylic copolymer; the mass of the metal complex dye accounts for 5%-25% of the total mass of the thermoplastic resin and the metal complex dye.

[0096] Step 3: forming a coating 105 on the surface of the color layer 104 and the third microstructure. Under the action of the coating 105, the first microstructure forms and displays a holographic pattern for anti-counterfeiting, and the third microstructure forms and displays a positioning mark;

[0097] The coating 105 is a metal aluminum layer with an aluminum value thickness of 300-500AI, or a dielectric layer with a light transmittance of 60-80%. The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide.

[0098] Before the second microstructure is separated from the color layer 104, the transparent second microstructure cannot be directly observed through the base film layer 101; when the first microstructure, the second microstructure and the color layer 104 are separated through the base film layer 101, the first microstructure can form a holographic pattern on the surface of the color layer 104, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer 104, and the color of the holographic pattern and the anti-counterfeiting code is the same as that of the color layer 104.

[0099] Step 4: coating the coating layer 105 with a self-adhesive to form a self-adhesive layer 106; applying a composite silicone oil paper on the self-adhesive layer 106 to obtain an encrypted digital mark.

[0100] The following are several specific preparation processes of the preparation method of the above-mentioned encrypted digital logo:

[0101] Process 1:

[0102] A method for preparing an encrypted digital identifier comprises the following steps:

[0103] 1): UV ink is coated on a base film layer with a thickness of 15u and a surface dyne value of 48, and then the holographic pattern and positioning cursor of the first structure area and the third structure area are transferred through a metal nickel plate, and then the general information area is obtained by UV curing with a power of 60% to 80%;

[0104] 2): There is no UV ink area on the base film layer, that is, the second structure area, which is sprayed with transparent UV ink by a UV coding machine and then cured by ultraviolet light with a power of 70% to 80%. The pattern formed by the transparent ink is a QR code or bar code carrying digital information, which is a specific information area;

[0105] 3): A color layer is coated on the first and second structural areas using a customized anilox roller, i.e., a solution composed of a thermoplastic acrylic resin with a softening point of 120°C, a metal complex dye and an organic solvent in a mass ratio of 20:5:75, which is fed through a coating machine and then heated and dried at 140°C by infrared to obtain a color layer; the actual peeling value of the color layer is measured to be 0.2N / m2;

[0106] 4): Vacuum aluminum plating on the surface of the color layer and the third structure area with a thickness of 500AI;

[0107] 5): Apply self-adhesive sticker on the aluminum layer, and then compound with silicone oil paper to obtain encrypted digital logo.

[0108] Craft 2

[0109] A method for preparing an encrypted digital identifier comprises the following steps:

[0110] 1): UV ink is coated on a base film layer with a thickness of 30u and a surface dyne value of 48, and then the holographic pattern and positioning cursor of the first structure area and the third structure area are transferred through a metal nickel plate, and then the universal information area is obtained by UV curing with a power of 60% to 80%;

[0111] 2): The area without UV ink on the base film, i.e., the third structure area, is sprayed with transparent UV ink by a UV coding machine, and then cured by ultraviolet light with a power of 70% to 80%. The pattern formed by the transparent ink is a QR code or bar code carrying digital information, which is a specific information area;

[0112] 3): A color layer is coated on the first and second structural areas using a customized anilox roller, i.e., a solution composed of a thermoplastic acrylic resin with a softening point of 200°C, a metal complex dye and an organic solvent in a mass ratio of 19:1:80, which is fed through a coating machine and then heated and dried at 140°C by infrared to obtain a color layer; the actual peeling value of the color layer is measured to be 0.5N / m2;

[0113] 4): Vacuum aluminum plating on the surface of the color layer and the third structure area with a thickness of 300AI;

[0114] 5): Apply self-adhesive sticker on the aluminum layer, and then compound with silicone oil paper to obtain encrypted digital logo.

[0115] Craft 3

[0116] A method for preparing an encrypted digital identifier comprises the following steps:

[0117] 1): UV ink is coated on a base film layer with a thickness of 23u and a surface dyne value of 48, and then the holographic pattern and positioning cursor of the first structure area and the third structure area are transferred through a metal nickel plate, and then the general information area is obtained by UV curing with a power of 60% to 80%;

[0118] 2): The area without UV ink on the base film, i.e., the second structural area, is sprayed with transparent UV ink by a UV coding machine, and then cured by ultraviolet light with a power of 70% to 80%. The pattern formed by the transparent ink is a QR code or bar code carrying digital information, which is a specific information area;

[0119] 3): A color layer is coated on the first and second structural areas using a customized anilox roller, i.e., a solution composed of a thermoplastic acrylic resin with a softening point of 250°C, a metal complex dye and an organic solvent in a mass ratio of 15:5:80, which is fed through a coating machine and then heated and dried at 140°C by infrared to obtain a color layer, and the measured peeling value of the color layer is 0.1N / m2;

[0120] 4): Vacuum medium ZnS is plated on the surface of the color layer and the third structure area, with a light transmittance of 80%;

[0121] 5): Apply self-adhesive on the ZnS dielectric layer, and then compound with silicone oil paper to obtain an encrypted digital mark.

[0122] (2) Structure 2: Figure 4 It is the first structural cross-sectional view of the third structural area in the encrypted digital logo; see Figure 4 As shown, the first structural area includes a second optically variable information layer 107, a coating layer 108, a color layer 104 and a coating layer 105 which are stacked in sequence; the second optically variable information layer 107 is formed on the surface of the base film layer 101 and has a third microstructure that can display a positioning mark under the action of the coating layer 108.

[0123] The second optically variable information layer 107 is attached to the base film layer 101 and is a carrier of the third microstructure in this embodiment. In this embodiment, one or more third microstructures capable of forming a positioning cursor are arranged on the side of the second optically variable information layer 107 away from the base film layer 101. In a specific example, the third microstructure is obtained by UV coating after transferring the holographic pattern through the master and then curing it with ultraviolet light.

[0124] The role of the coating 108 in this embodiment is the same as that of the coating 105 in structure 1, and its main role is to prevent light from completely passing through. When the encrypted digital logo is in use, after the light is incident, a reflection is formed at the interface between the coating 108 and the third microstructure, so that the positioning cursor can be presented. Under the action of the coating 108, the third microstructure can form a positioning cursor that can be directly observed through the base film layer 101. The shape of the positioning cursor is not specifically limited. When the manufacturer of the logo attaches the encrypted digital logo to the logo object, the positioning cursor can be used to identify and locate the position of the encrypted digital logo to achieve accurate attachment.

[0125] In this structure, the purpose of setting the coating layer 108 between the second optically variable information layer 107 and the color layer 104 is to enable the positioning cursor on the second optically variable information layer 107 to be presented through the base film layer 101; and the coating layer 105 and the second optically variable information layer 107 are separated by the color layer 104, so the coating layer 105 cannot play the same role as the coating layer 108.

[0126] The coating 108 can be a metal aluminum layer or a dielectric layer, and both the metal aluminum layer and the dielectric layer can be prepared by vacuum evaporation. When the metal aluminum layer is used, the aluminum value thickness is 300 to 500 AI. The dielectric layer is selected from any one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%. The composition and structure of the coating 105 can be the same as or different from that of the coating 108. For the convenience of the preparation process, in this embodiment, the composition and structure of the coating 105 are exactly the same as those of the coating 108.

[0127] Similar to the first embodiment, in the above structures one and two, the surface of the coating layer 105 is also provided with a self-adhesive layer 106, which is mainly used to attach the encrypted digital logo to the surface of the marker. Furthermore, the surface of the self-adhesive layer 106 is compounded with silicone oil paper to obtain a complete encrypted digital logo; when in use, the silicone oil paper is peeled off, and the encrypted digital logo can be attached to the surface of the marker through the self-adhesive layer 106.

[0128] This embodiment also provides a method for preparing the above-mentioned encrypted digital identification, which specifically includes the following steps:

[0129] Step 1: providing a base film layer 101, forming a first microstructure and a third microstructure on the first region and the third region of the base film layer 101 respectively, and forming a transparent second microstructure on the second region of the base film layer 101;

[0130] The base film layer 101 is made of a transparent film material suitable for processing laser holographic patterns, with a thickness of 15 to 30 um and a surface dyne value of the base film layer greater than 48.

[0131] Step 2: forming a coating 108 on the first microstructure, the second microstructure, and the third microstructure, removing the coating 108 on the first microstructure and the second microstructure, and retaining the coating 108 on the third microstructure; under the action of the coating 108, the third microstructure forms and displays a positioning mark;

[0132] Step 3: coating a color layer 104 on the first microstructure, the second microstructure and the second coating layer, and the color layer 104 penetrates into the gaps of the first microstructure and the second microstructure respectively;

[0133] The color layer is a mixture of a thermoplastic resin with a softening point of 120-250°C and a metal complex dye. The thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene, and styrene-acrylic copolymer; the mass of the metal complex dye accounts for 5%-25% of the total mass of the thermoplastic resin and the metal complex dye.

[0134] Step 3: forming a coating layer 105 on the surface of the color layer 104, under the action of the coating layer 105, the first microstructure forms and displays a holographic pattern for anti-counterfeiting;

[0135] The coating 105 is a metal aluminum layer with an aluminum value thickness of 300-500AI, or a dielectric layer with a light transmittance of 60-80%. The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide.

[0136] Before the second microstructure is separated from the color layer 104, the transparent second microstructure cannot be directly observed through the base film layer 101; when the first microstructure, the second microstructure and the color layer 104 are separated through the base film layer 101, the first microstructure can form a holographic pattern on the surface of the color layer 104, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer 104, and the color of the holographic pattern and the anti-counterfeiting code is the same as that of the color layer 104.

[0137] Step 4: coating the coating layer 105 with a self-adhesive to form a self-adhesive layer 106; applying a composite silicone oil paper on the self-adhesive layer 106 to obtain an encrypted digital mark.

[0138] Craft 4

[0139] A method for preparing an encrypted digital identifier comprises the following steps:

[0140] 1): UV ink is coated on a base film layer with a thickness of 23u and a surface dyne value of 48, and then the holographic pattern and positioning cursor of the first structure area and the third structure area are transferred through a metal nickel plate, and then the general information area is obtained by UV curing with a power of 60% to 80%;

[0141] 2): The area without UV ink on the base film, i.e., the second structural area, is sprayed with transparent UV ink by a UV coding machine, and then cured by ultraviolet light with a power of 70% to 80%. The pattern formed by the transparent ink is a QR code or bar code carrying digital information, which is a specific information area;

[0142] 3): Vacuum aluminum is plated on the first structure area, the second structure area, and the third structure area, and then the information layer is obtained by the positioning aluminum washing technology, where only the aluminum layer of the third structure area is not washed away, and the aluminum layer plays a role in protecting the brightness of the positioning cursor of the third structure area;

[0143] 3): A color layer is coated on the aluminum-plated layer of the first structural area, the second structural area and the third structural area as a whole, i.e., a solution composed of a thermoplastic acrylic resin with a softening point of 150°C, a metal complex dye and an organic solvent in a mass ratio of 18:2:80, which is fed through a coating machine and then heated and dried at 140°C by infrared to obtain a color layer; the actual peeling value of the color layer is measured to be 0.25N / m2;

[0144] 4): Vacuum-deposit medium ZnS on the surface of the color layer, with a light transmittance of 60%;

[0145] 5): Apply self-adhesive on the dielectric layer ZnS, and then compound with silicone oil paper to obtain an encrypted digital mark.

[0146] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An encrypted digital label, comprising a base film layer and an information layer; characterized in that: The information layer includes a first structure area and a second structure area; The first structural area comprises a first optically variable information layer, a color layer and a first coating layer which are stacked in sequence; the first optically variable information layer is formed on the surface of the base film layer, and has a first microstructure which can display a holographic pattern under the action of the first coating layer, and the first microstructure is embedded in the color layer; The second structural area includes a transparent identification layer, a color layer and a first coating layer stacked in sequence; the transparent identification layer is formed on the surface of the base film layer, has a transparent second microstructure that can form an anti-counterfeiting code, and the second microstructure is embedded in the color layer; When the first optically variable information layer, the transparent identification layer and the color layer are separated by the base film layer, the first microstructure on the first optically variable information layer forms a holographic pattern on the surface of the color layer, and the second microstructure on the transparent identification layer forms an anti-counterfeiting code on the surface of the color layer.

2. The encrypted digital identification according to claim 1, characterized in that: The information layer includes a third structure area; The third structure area includes a second optically variable information layer and a first coating layer stacked in sequence; the second optically variable information layer is formed on the surface of the base film layer and has a third microstructure that can display a positioning mark under the action of the first coating layer.

3. The encrypted digital identification according to claim 1, characterized in that: The information layer includes a third structure area; The third structure area includes a second optically variable information layer, a second coating layer, a color layer and a first coating layer stacked in sequence; the second optically variable information layer is formed on the surface of the base film layer and has a third microstructure that can display a positioning mark under the action of the second coating layer.

4. The encrypted digital identification according to claim 1, characterized in that: The peeling value between the first optically variable information layer, the transparent marking layer and the color layer is 0.1-0.5 N / cm.

5. The encrypted digital identification according to claim 1, characterized in that: The color layer is formed by mixing a thermoplastic resin with a softening point of 120 to 250° C. and a metal complex dye, wherein the mass proportion of the metal complex dye is 5% to 25%.

6. The encrypted digital identification according to claim 5, characterized in that: The thermoplastic resin is selected from one or more of acrylic resin, polyester resin, polyurethane, polystyrene and styrene-acrylic copolymer.

7. The encrypted digital identification according to any one of claims 1 to 6, characterized in that: The coating is a metal aluminum layer or a dielectric layer; The aluminum value thickness of the metal aluminum layer is 300 to 500 AI; The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide, and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.

8. A method for preparing an encrypted digital identifier, characterized in that: The following steps are involved: S1: providing a base film layer, forming a first microstructure on a first area of ​​the base film layer, and forming a transparent second microstructure on a second area of ​​the base film layer; S2: coating a color layer on the first microstructure and the second microstructure, and the color layer penetrates into the gaps between the first microstructure and the second microstructure respectively; S3: forming a first coating layer on the surface of the color layer, under the action of the first coating layer, the first microstructure forms and displays a holographic pattern; When the first microstructure, the second microstructure and the color layer are separated by the base film layer, the first microstructure can form a holographic pattern on the surface of the color layer, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer.

9. A method for preparing an encrypted digital identifier, characterized in that: The following steps are involved: S1: providing a base film layer, forming a first microstructure and a third microstructure on a first region and a third region of the base film layer respectively, and forming a transparent second microstructure on a second region of the base film layer; S2: coating a color layer on the first microstructure and the second microstructure, and the color layer penetrates into the gaps between the first microstructure and the second microstructure respectively; S3: forming a first coating layer on the surface of the color layer and the third microstructure, under the effect of the first coating layer, the first microstructure forms and displays a holographic pattern, and the third microstructure forms and displays a positioning mark; When the first microstructure, the second microstructure and the color layer are separated by the base film layer, the first microstructure can form a holographic pattern on the surface of the color layer, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer.

10. A method for preparing an encrypted digital identifier, characterized in that: The following steps are involved: S1: providing a base film layer, forming a first microstructure and a third microstructure on a first region and a third region of the base film layer respectively, and forming a transparent second microstructure on a second region of the base film layer; S2: forming a second coating on the first microstructure, the second microstructure, and the third microstructure, removing the second coating on the first microstructure and the second microstructure, and retaining the second coating on the third microstructure; under the action of the second coating, the third microstructure forms and displays a positioning mark; S3: coating a color layer on the first microstructure, the second microstructure and the second coating layer, and the color layer penetrates into the gaps of the first microstructure and the second microstructure respectively; S4: forming a first coating layer on the surface of the color layer, under the action of the first coating layer, the first microstructure forms and displays a holographic pattern; When the first microstructure, the second microstructure and the color layer are separated by the base film layer, the first microstructure can form a holographic pattern on the surface of the color layer, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer.

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