Transfer film using hidden image coding technology and anti-counterfeiting method using the same

Abstract

The invention relates to a transfer film adopting hidden image coding technology and an anti-counterfeiting method realized by using the transfer film, belonging to the field of anti-counterfeiting technology; the transfer film comprises a substrate layer, a release layer, an information layer, an aluminum-plated layer, and a transfer adhesive layer; an outer code to be transferred is printed on the release layer to form an information layer; the outer code is associated with an inner code; the outer code is printed on an outer packaging box of a product by using transfer technology, and the inner code is printed on a product body; both the outer code and the inner code are variable anti-counterfeiting codes made by using variable digital generation technology, and each outer code and inner code is unique; the outer code and the inner code are written with corresponding information according to pre-setting, and the anti-counterfeiting verification function of the commodity is completed by scanning the two mutually associated anti-counterfeiting codes of the outer code and the inner code; the method comprises two ways of scanning the outer code first and scanning the inner code first; a double anti-counterfeiting verification method through two entities "variable anti-counterfeiting code" and "transfer film" and a method "internal and external code association verification".

Description

Technical Field

[0001] The invention relates to a transfer film using hidden image coding technology and an anti-counterfeiting method implemented by using the transfer film, belonging to the technical field of anti-counterfeiting. Background Art

[0002] Companies mainly use anti-counterfeiting labels on the surface of product packaging to solve the problem of product authenticity verification. Anti-counterfeiting labels need to be specially customized and then affixed to the product packaging by a special labeling machine or manually. A product only uses one anti-counterfeiting code on the outer packaging. Companies lack efficient and reliable technical means to inspect counterfeit goods in the market.

[0003] The disadvantages of the prior art are as follows:

[0004] (1) The anti-counterfeiting label is easily separated from the outer packaging.

[0005] (2) The anti-counterfeiting labels are easily copied and forged by criminals.

[0006] (3) The affixed anti-counterfeiting label covers part of the pattern on the packaging box, affecting the appearance of the product's outer packaging.

[0007] (4) The labeling process will increase labor and equipment costs, increase enterprise costs, and reduce production efficiency.

[0008] (5) The single anti-counterfeiting label on the outer packaging is easily damaged, making it impossible to verify the authenticity of the product.

[0009] (6) Enterprises lack efficient and reliable technical means to detect counterfeit goods in the market.

[0010] Glossary:

[0011] 1. External code: The anti-counterfeiting code on the digital film transfer label transferred on the outer packaging described in this application is the "external code".

[0012] 2. Internal code: The anti-counterfeiting code on the product body is the “internal code”.

[0013] 3. Plain code: A QR code without any cover.

[0014] 4. Secret code: A QR code that is partially or completely covered (for example, a layer of scratch-off silver is covered on the QR code printed on the outer packaging, and the QR code can only be scanned after the scratch-off silver is scratched off).

[0015] 5. Variable anti-counterfeiting code: The anti-counterfeiting code can be a QR code or a barcode, etc., and each number is unique and non-repetitive after being processed by variable technology. Summary of the invention

[0016] The technical problem to be solved by the present invention is: to provide a transfer film using hidden image coding technology and an anti-counterfeiting method implemented therewith, wherein a variable anti-counterfeiting code is printed on the information layer of the transfer film, and anti-counterfeiting verification is performed by associating internal and external codes with each other to avoid the problems of anti-counterfeiting labels being easily copied and recycled, pasted anti-counterfeiting labels being easily fallen off and damaged, and having only one anti-counterfeiting code on the product outer packaging and poor visual effect of the product outer packaging.

[0017] The transfer film using hidden image coding technology described in the present invention comprises:

[0018] Substrate layer: Made of PET film, it plays a role of connection and support in the transfer film;

[0019] Release layer: A release adhesive is applied on the substrate layer to form a release layer. Its function is to separate the dye, aluminum and transfer adhesive layer from the substrate layer and transfer and bond them to the surface of the product outer packaging box after heating and pressurization.

[0020] Information layer: The outer code that needs to be transferred on the release layer and the invisible image implanted by invisible image coding technology form the information layer; Aluminum plating layer: After the metal aluminum is vaporized under high temperature and vacuum conditions, it is evenly attached to the surface of the information layer, which increases the metallic luster of the information layer pattern;

[0021] Transfer adhesive layer: After the hot-melt resin is dissolved in an organic solvent, it is coated on the aluminized layer and dried to form a transfer adhesive layer of the transfer film; during the process of transferring the image to the substrate, the transfer adhesive layer is melted by heat so that the transfer film image can adhere to the surface of the substrate;

[0022] The outer code is associated with the inner code, the outer code is printed on the outer packaging box of the product using transfer technology, and the inner code is printed on the product body; both the outer code and the inner code are variable anti-counterfeiting codes made using variable digital generation technology, and each outer code and inner code are unique; the outer code and the inner code are written with corresponding information according to pre-settings, and the anti-counterfeiting verification function of the product is completed by scanning the two interrelated anti-counterfeiting codes, the outer code and the inner code.

[0023] The transfer film printed with a variable anti-counterfeiting code can be hot stamped on the outer packaging of the product, replacing the anti-counterfeiting label on the outer surface of the original product packaging; by scanning the variable digital number hot stamped on the outer packaging of the product, the product and authenticity information written in the digital number can be identified. The anti-counterfeiting label pasted on the outer packaging of the product is easy to fall off. The anti-counterfeiting label is directly transferred to the product packaging through the transfer film and integrated with the outer packaging of the product, which can avoid the problem of falling off when the anti-counterfeiting label is pasted. The pasted anti-counterfeiting label is easy to be peeled off, and then copied in batches and pasted on counterfeit products; the transfer film is directly transferred to the outer packaging of the product through transfer technology, and integrated with the outer packaging of the product, which creates a technical and cost threshold for counterfeiters to counterfeit. The internal code and the external code are double-coded, which provides a double insurance for the product anti-counterfeiting verification measures; even if the counterfeiter forges the anti-counterfeiting code on the outer packaging of the product, because there is no internal code or it cannot be associated with the internal code for mutual verification, the counterfeit product cannot be pretended to be a genuine product. The anti-counterfeiting logo is transferred to the packaging, which is integrated with the overall visual effect of the outer packaging, making the appearance of the product outer packaging more exquisite.

[0024] Preferably, the invisible image is divided into several small areas, each of which can realize the encoding of a decimal digit; each small area is further divided into smaller areas, each of which realizes the encoding of 1 binary digit; multiple small areas are combined together to realize a set of complete encodings. These images edited using the external code image as the encoding are invisible to the naked eye, and can be displayed as images visible to the naked eye through special decoding equipment.

[0025] Preferably, the inner code is printed on the product body by “inkjet coding” or “labeling”.

[0026] Preferably, the outer code is printed on the release layer of the transfer film by printing and coating technology to print a variable digital image.

[0027] Preferably, the preparation process of the transfer film is as follows:

[0028] Step S1: Determine the slitting width

[0029] Determine the slitting direction of the transfer film according to the transfer pattern, and determine the slitting width of the small roll transfer film according to the product specifications;

[0030] Step S2: Determine the optimal cutting plan

[0031] According to the standard width of the transfer film and the slitting width of the small roll transfer film, the optimal slitting scheme is determined through calculation and analysis. The slitting scheme includes the slitting quantity of the small roll transfer film and the slitting area width between adjacent slitting rolls;

[0032] Step S3: Customizing the electroplate roller coated with release material

[0033] Customizing an electric engraving roller according to the slitting scheme of step S2, wherein the electric engraving roller has a coated plate for loading and a smooth plate for not loading, and the width of the smooth plate is determined based on the width of the slitting area in step S2;

[0034] Step S4: Applying release material

[0035] A customized electric engraving roller is used to coat the release material on the surface of the substrate layer to obtain a release area coated with the release material and a partial release layer in the non-release area not coated with the release material. The release area for feeding ensures that the aluminum-plated layer and the substrate layer are peeled off from each other. The non-release area without feeding is the slitting area that cannot be peeled off. It serves as the reference position for cutting and slitting, effectively isolating the knife body from the release area, and avoiding direct contact between the release layer in the release area and the knife body.

[0036] Step S5: coating the information layer

[0037] Dye is coated on the surface of a local release layer to form an information layer, on which a variable digital pattern is printed;

[0038] Step S6: Aluminum plating

[0039] A metal aluminum layer is deposited on the surface of the information layer by vacuum aluminum deposition;

[0040] Step S7: Apply adhesive

[0041] Applying adhesive backing on the surface of the aluminum-plated layer to form a transfer adhesive layer;

[0042] Step S8: Cutting

[0043] Adjust the position of the slitting knife according to the predetermined slitting plan so that the blade of the slitting knife cuts the non-release area of ​​the transfer film;

[0044] Step S9: Transfer

[0045] Put the cut small rolls of transfer film onto the machine for transfer.

[0046] Preferably, the inner code is a plain code.

[0047] Preferably, the inner code is a secret code.

[0048] The present invention also designs an anti-counterfeiting method implemented by the transfer film using the hidden image coding technology, that is, a verification method of the transfer film using the hidden image coding technology. The anti-counterfeiting verification method is equivalent to a double insurance for the product anti-counterfeiting verification measures. Even if the counterfeiter forges the anti-counterfeiting code on the product packaging, because there is no internal code or it cannot be associated with the internal code for mutual verification, the counterfeit product cannot be posed as a genuine product. It includes the following ways:

[0049] Method 1: Scan the external code first, including the following steps:

[0050] Step Y1: Use a scanning device to scan the outer code on the packaging box. The scanning result prompts you to continue scanning the inner code on the product body.

[0051] Step Y2: After scanning the inner code according to the outer code prompt, if the product is authentic, the scan result will show the product authenticity prompt information, otherwise it is counterfeit.

[0052] Method 2: Scan the internal code first, including the following steps:

[0053] Step M1: Use a scanning device to scan the inner code on the product body. The scanning result prompts you to continue scanning the outer code on the packaging box;

[0054] Step M2: After scanning the outer code according to the inner code prompt, if the product is authentic, the scan result will show the product authenticity prompt information, otherwise it is counterfeit.

[0055] In addition, if the inner code is a secret code, the following steps are specifically included:

[0056] Step A1, remove the obstructed part of the secret code to reveal the inner code;

[0057] Step A2: Use a scanning device to scan the internal code on the product body. If the product is genuine, the scanning result will show the product authenticity prompt information, otherwise it is counterfeit.

[0058] Compared with the prior art, the present invention has the following beneficial effects:

[0059] The transfer film adopting hidden image coding technology described in the present invention can be hot-stamped on the outer packaging material of the product through the transfer film printed with a variable anti-counterfeiting code, replacing the anti-counterfeiting label pasted on the outer surface of the original product packaging material; by scanning the variable digital number hot-stamped on the outer packaging of the product, the product and authenticity information written in the digital number can be identified. The anti-counterfeiting label pasted on the outer packaging of the product is easy to fall off. The anti-counterfeiting label is directly transferred to the product packaging material through the transfer film and integrated with the outer packaging of the product, which can avoid the problem of falling off that may occur when pasting the anti-counterfeiting label. The pasted anti-counterfeiting label is easy to be peeled off, and then copied in batches and pasted on counterfeit products; the transfer film is directly transferred to the outer packaging of the product through the transfer technology, and integrated with the outer packaging of the product, which creates a technical and cost threshold for counterfeiters to counterfeit. The internal code and the external code are double-coded, which provides a double insurance for the product anti-counterfeiting verification measures; even if the counterfeiter forges the anti-counterfeiting code on the outer packaging of the product, because there is no internal code or it cannot be associated with the internal code for mutual verification, the counterfeit product cannot pretend to be a genuine product. The anti-counterfeiting logo is transferred to the packaging, which is integrated with the overall visual effect of the outer packaging, making the appearance of the product outer packaging more exquisite.

[0060] The anti-counterfeiting method implemented by the transfer film using the hidden image coding technology described in the present invention is equivalent to providing a double insurance for product anti-counterfeiting verification measures. Even if the counterfeiter forges the anti-counterfeiting code on the product packaging, the counterfeit product cannot be posed as a genuine product because there is no internal code or the internal code cannot be associated with each other for verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is a schematic cross-sectional structure diagram of the transfer film using the hidden image coding technology of the present invention;

[0062] Figure 2 This is a process flow chart of preparing a transfer film using hidden image coding technology according to the present invention;

[0063] Figure 3 It is a schematic structural diagram of the small roll transfer film of the present invention;

[0064] Figure 4 It is a flow chart of the anti-counterfeiting method implemented by the transfer film using the hidden image coding technology described in the present invention;

[0065] Figure 5 It is a schematic diagram of the structure of the invisible image and decoding camera of the present invention.

[0066] In the figure: 1, substrate layer; 2, release layer; 3, information layer; 4, aluminum plating layer; 5, transfer adhesive layer. DETAILED DESCRIPTION

[0067] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0068] Embodiment 1:

[0069] like Figure 1 As shown, the present invention designs a transfer film using hidden image coding technology, which is composed of 5 layers of different materials:

[0070] The first layer is substrate layer 1: substrate layer 1 is made of PET film, which plays a connecting and supporting role in the transfer film, supporting the various coatings on it to facilitate continuous action during transfer processing.

[0071] The second layer is the release layer 2: the release adhesive is coated on the substrate layer 1 to form the release layer 2. The main material of the release adhesive is silicone resin, which will automatically melt and fall off when heated. The main function is to enable the dye, aluminum, and transfer adhesive layer to quickly separate from the substrate layer 1 and be transferred and bonded to the surface of the object to be transferred after heating and pressurization.

[0072] The third layer is the information layer 3: the variable digital data to be transferred and the invisible image implanted by invisible image coding technology are printed on the film release layer 2 to form the information layer 3. This layer is composed of heat-resistant synthetic resin and dye, and the commonly used synthetic resin is polyurethane. The dye is dissolved in the synthetic resin to form a color paste, which is directly coated on the surface of the release layer 2 and then dried.

[0073] The fourth layer is the aluminum plating layer 4: This layer is made of metal aluminum that is vaporized under high temperature and vacuum conditions and evenly adheres to the surface of the information layer, which plays a role in increasing the metallic luster of the information layer pattern and making the pattern more beautiful.

[0074] The fifth layer is the transfer adhesive layer 5: This layer is formed by dissolving a hot-melt resin such as a copolymer of methyl acrylate and acrylic acid in an organic solvent, coating it on the aluminized layer, and drying it to form a transfer adhesive layer 5 of the transfer film. In the process of transferring the image to the substrate, this layer is melted by heat so that the transfer film image can adhere to the surface of the substrate.

[0075] The outer code is associated with the inner code, the outer code is printed on the outer packaging box of the product using transfer technology, and the inner code is printed on the product body; both the outer code and the inner code are variable anti-counterfeiting codes made using variable digital generation technology, and each outer code and inner code are unique; the outer code and the inner code are written with corresponding information according to pre-settings, and the anti-counterfeiting verification function of the product is completed by scanning the two interrelated anti-counterfeiting codes, the outer code and the inner code.

[0076] The transfer film printed with a variable anti-counterfeiting code can be hot stamped on the outer packaging of the product, replacing the anti-counterfeiting label on the outer surface of the original product packaging; by scanning the variable digital number hot stamped on the outer packaging of the product, the product and authenticity information written in the digital number can be identified. The anti-counterfeiting label pasted on the outer packaging of the product is easy to fall off. The anti-counterfeiting label is directly transferred to the product packaging through the transfer film and integrated with the outer packaging of the product, which can avoid the problem of falling off when the anti-counterfeiting label is pasted. The pasted anti-counterfeiting label is easy to be peeled off, and then copied in batches and pasted on counterfeit products; the transfer film is directly transferred to the outer packaging of the product through transfer technology, and integrated with the outer packaging of the product, which creates a technical and cost threshold for counterfeiters to counterfeit. The internal code and the external code are double-coded, which provides a double insurance for the product anti-counterfeiting verification measures; even if the counterfeiter forges the anti-counterfeiting code on the outer packaging of the product, because there is no internal code or it cannot be associated with the internal code for mutual verification, the counterfeit product cannot be pretended to be a genuine product. The anti-counterfeiting logo is transferred to the packaging, which is integrated with the overall visual effect of the outer packaging, making the appearance of the product outer packaging more exquisite.

[0077] A transfer film using hidden image coding technology is generated by variable digital generation software to form a complete variable digital database. Each variable digital corresponds to a product, and each product has a unique digital corresponding to it, that is, the concept of "one object, one code". Then the variable digital information is sent to the platemaking equipment of the printing factory to prepare the printing plate for coating the variable digital information layer. Finally, the variable digital image is printed on the release layer of the transfer film through printing and coating technology to form the variable digital information layer. Each of these digital numbers printed on the transfer film is unique.

[0078] After the product is produced and put into the outer packaging, the outer packaging box of the product is printed with an anti-counterfeiting code by transfer technology, which we call the "external code"; the product body is printed with an anti-counterfeiting code by "spraying code" or "labeling", which we call the "inner code".

[0079] The digital pattern printed on the product packaging without anti-counterfeiting verification function can be the same. The digital pattern can be written with fixed information such as product model, size, manufacturer, etc., or can be scanned to display a specific page such as following the merchant's WeChat public account.

[0080] However, the digital codes used in this patent, whether "external code" or "internal code", are all variable anti-counterfeiting codes made using variable digital generation technology, which can be either QR codes or bar codes. The characteristic is that each external code and internal code is unique. The external code and the internal code are written with corresponding information according to the pre-setting. After the product is consumed, the anti-counterfeiting verification function of the product can be completed by scanning the two interrelated internal and external anti-counterfeiting codes.

[0081] The outer code in this patent is a clear code, that is, no covering treatment, and is transferred from the transfer film to the outer packaging. The inner code can be a clear code or a hidden code, that is, a partial or full covering treatment is performed.

[0082] Specifically, the outer code is printed on the release layer 2 of the transfer film by printing and coating technology to print a variable digital image.

[0083] like Figure 2 and Figure 3 As shown, the preparation process of the transfer film is as follows:

[0084] Step S1: Determine the slitting width

[0085] Determine the slitting direction of the transfer film according to the transfer pattern, and determine the slitting width of the small roll transfer film according to the product specifications;

[0086] Step S2: Determine the optimal cutting plan

[0087] According to the standard width of the transfer film and the slitting width of the small roll transfer film, the optimal slitting scheme is determined through calculation and analysis. The slitting scheme includes the slitting quantity of the small roll transfer film and the slitting area width between adjacent slitting rolls;

[0088] Step S3: Customizing the electroplate roller coated with release material

[0089] Customizing an electric engraving roller according to the slitting scheme of step S2, wherein the electric engraving roller has a coated plate for loading and a smooth plate for not loading, and the width of the smooth plate is determined based on the width of the slitting area in step S2;

[0090] Step S4: Applying release material

[0091] A release material is coated on the surface of the substrate layer 1 using a customized electric engraving roller to obtain a release area coated with the release material and a partial release layer 2 in the non-release area not coated with the release material. The release area for feeding ensures that the aluminum-plated layer 4 and the substrate layer 1 are separated from each other, which is convenient for film removal during transfer printing; the non-release area for not feeding is the slitting area that cannot be peeled off, which serves as the reference position for cutting and slitting, effectively isolating the knife body from the release area, and avoiding direct contact between the release layer 2 in the release area and the knife body;

[0092] Step S5: coating the information layer 3

[0093] Dye is coated on the surface of the partial release layer 2 to form an information layer 3, on which a variable digital pattern is printed;

[0094] Step S6: Aluminum plating

[0095] A metal aluminum layer is deposited on the surface of the information layer 3 by vacuum aluminum deposition; the aluminum deposition layer is used to give the transferred pattern a metallic luster, making the transferred pattern more beautiful;

[0096] Step S7: Apply adhesive

[0097] Applying adhesive backing on the surface of the aluminum-plated layer 4 to form a transfer adhesive layer 5;

[0098] Step S8: Cutting

[0099] Adjust the position of the slitting knife according to the predetermined slitting plan so that the blade of the slitting knife cuts the non-release area of ​​the transfer film;

[0100] Step S9: Transfer

[0101] Put the cut small rolls of transfer film onto the machine for transfer.

[0102] The principle of transfer using transfer film is as follows:

[0103] The process of transferring the pattern on the transfer film to the packaging material utilizes the principle of heat pressure transfer. Under a certain temperature and pressure, the adhesive of the hot-melt silicone resin release layer 2 and the transfer adhesive layer 5 is melted by heat. After the silicone resin of the release layer 2 is melted, its bonding force is reduced, and the aluminum-plated layer 4 is peeled off from the substrate layer 1. The heat-sensitive adhesive of the transfer adhesive layer 5 bonds the aluminum-plated layer 4 to the transfer material, and the aluminum-plated layer with dye appears on the surface of the packaging material.

[0104] like Figure 5 As shown, in order to provide enterprises with reliable technical support for counterfeit inspection, the invisible image of the information layer 3 is divided into several small areas, each of which can realize the encoding of a decimal digit; each small area is further divided into smaller areas, each of which realizes the encoding of 1 binary digit; multiple small areas are combined together to realize a complete set of encoding. That is, in addition to the variable two-dimensional code visible to the naked eye, the information layer 3 also has a dark pattern image that is hidden after encoding with the variable two-dimensional code image. After the transfer film is transferred to the packaging material, the "variable two-dimensional code" transferred from the information layer 3 can be seen by the naked eye, and other image information cannot be seen; however, through the matching decoding camera, the image realized after encoding with the variable two-dimensional code image can be seen, which is invisible to the naked eye. It is convenient for enterprises to use it for counterfeit inspection. Figure 5 In the figure, a is the product packaging, b is the hidden image, and c is the decoding camera.

[0105] Each digit is encoded by the presence or absence of a pattern or patterns of different colors, such as the presence of a pattern represents 1 and the absence of a pattern represents 0; or one pattern represents 1 and another pattern represents 0.

[0106] Each bit of code uses the basic element image set by the information layer image according to the coding rules. The basic element images are pieced together to form a complete pattern of a unit and represent a group of codes at the same time.

[0107] The pattern designed according to the coding rules is repeated in the planned application area until it covers the entire application area, forming a macroscopic image mark. The image mark is invisible to the naked eye. The image is encoded and collected based on the visible digital image of the transfer film information layer according to the coding rules. Therefore, what the naked eye sees is only the original digital image of the information layer. The invisible image mark can only be seen through a dedicated decoding camera or mobile phone APP.

[0108] Embodiment 2:

[0109] like Figure 4As shown, the present invention also designs an anti-counterfeiting method implemented by the transfer film using the hidden image coding technology described in Example 1, that is, an anti-counterfeiting method in which two codes are associated and then verified with each other, including two ways of scanning the outer code first and scanning the inner code first, which are pre-set by software. The anti-counterfeiting verification method is equivalent to a double insurance for the product anti-counterfeiting verification measures. Even if the counterfeiter forges the anti-counterfeiting code on the outer packaging of the product, because there is no inner code or it cannot be associated with the inner code for mutual verification, the counterfeit product cannot be posed as a genuine product.

[0110] Method 1: Scan the external code first

[0111] When you scan the outer code on the packaging box with a mobile phone or other scanning device, the scanning result prompts you to continue scanning the inner code on the product body. After scanning the inner code according to the outer code prompt, if the product is authentic, the scanning result will show the product authenticity prompt information. Otherwise, it is counterfeit.

[0112] Method 2: Scan the internal code first

[0113] If the inner code is a clear code, that is, a code that is not blocked, you will be prompted to scan the outer code after scanning the code. After scanning the outer code on the packaging box according to the prompt, if the product is genuine, the scan result will show the product authenticity prompt information. Otherwise, it is counterfeit.

[0114] If the internal code is a secret code, that is, it has been partially or completely blocked, remove the blocked part to reveal the digital code, and then scan the code. If the product is authentic, the scan result will show the authentic product prompt information. Otherwise, it is counterfeit.

[0115] The present invention uses a dual anti-counterfeiting verification method with a physical "transfer film", a technology "-hidden image coding technology" and a method "internal and external code correlation verification". On the information layer of the transfer film, there is an invisible anti-counterfeiting mark formed by encoding an image visible to the naked eye. The mark is invisible to the naked eye and requires a special decoding instrument to reveal the invisible anti-counterfeiting mark in the information layer; the anti-counterfeiting verification is performed by correlating the internal and external codes and verifying each other. It has the following advantages:

[0116] 1. Save enterprise costs and make packaging more beautiful

[0117] The film printed with a variable anti-counterfeiting code (QR code, barcode, etc.) can be transferred to the product packaging material, replacing the original anti-counterfeiting label on the outer surface of the product packaging material, and forming an integrated part with the product packaging material. This design not only makes the product packaging more beautiful, but also saves the cost of manual labeling for the company.

[0118] 2. Provide enterprises with reliable technical support for counterfeit inspection

[0119] The information layer of the transfer film has an invisible anti-counterfeiting mark that is invisible to the naked eye after being encoded with an image. It can only be seen under a decoding camera, which provides a reliable technical guarantee for companies to detect counterfeit goods.

[0120] 3. Double-code associated anti-counterfeiting verification ensures the reliability of product anti-counterfeiting measures

[0121] Conventional products only have anti-counterfeiting measures by sticking labels on the outer packaging, with only one anti-counterfeiting mark. Such anti-counterfeiting measures are easily forged by lawless elements. The present invention adopts a dual anti-counterfeiting verification method of associating internal and external codes, which not only facilitates customers to check the authenticity of products, but also sets a high barrier for counterfeiters to counterfeit.

[0122] 4. Solved the problem of anti-counterfeiting labels being easy to fall off and damaged. The anti-counterfeiting labels pasted on the product outer packaging are easy to fall off. By transferring the anti-counterfeiting labels directly to the product packaging material through the thermal transfer film and integrating them with the product outer packaging, the problem of anti-counterfeiting labels falling off can be avoided.

Claims

1. A transfer film using hidden image coding technology, characterized in that: include: Base material layer (1): PET film is used, which plays a role of connection and support in the transfer film; Release layer (2): a release adhesive is coated on the substrate layer (1) to form a release layer (2); The function is to separate the dye, aluminum and transfer adhesive layer (5) from the substrate layer (1) and transfer and adhere them to the surface of the product outer packaging box after heating and pressurization; Information layer (3): the outer code to be transferred and the invisible image implanted by invisible image coding technology are printed on the release layer (2) to form the information layer (3); Aluminum plating layer (4): metal aluminum is vaporized under high temperature and vacuum conditions and uniformly adheres to the surface of the information layer (3), thereby increasing the metallic luster of the information layer pattern; Transfer adhesive layer (5): After hot-melt resin is dissolved in an organic solvent, it is coated on the aluminum-plated layer and dried to form a transfer adhesive layer (5) of a transfer film; during the process of transferring the image to the substrate, the transfer adhesive layer (5) is melted by heat so that the transfer film image can adhere to the surface of the substrate; The outer code is associated with the inner code, the outer code is printed on the outer packaging box of the product using transfer printing technology, and the inner code is printed on the product body; The outer code and the inner code are both variable anti-counterfeiting codes made by using variable digital generation technology, and each outer code and inner code are unique; the outer code and the inner code are written with corresponding information according to the preset settings, and the anti-counterfeiting verification function of the product is completed by scanning the two interrelated anti-counterfeiting codes of the outer code and the inner code; The invisible image is divided into several small areas, each of which can realize the encoding of a decimal digit; each small area is further divided into smaller areas, each of which realizes the encoding of 1 binary digit; multiple small areas are combined together to realize a set of complete encoding; The outer code is printed with a variable digital image on the release layer (2) of the transfer film by printing and coating technology; The hidden dark pattern image is realized by encoding with a variable digital image. Each digit is encoded with or without a pattern or with different colors. The pattern represents 1, and the absence of a pattern represents 0; or one pattern represents 1, and another pattern represents 0; Each bit of code uses the basic element images set by the information layer image according to the coding rules. The basic element images are pieced together to form a complete pattern of a unit and represent a group of codes at the same time. The pattern designed according to the coding rules is repeated in the planned application area until the entire application area is covered to form a macroscopic image mark; the image mark is invisible to the naked eye; the coding rules of the image mark are based on the coding collection of the visible digital image of the transfer film information layer.

2. The transfer film using hidden image coding technology according to claim 1, characterized in that: The internal code is printed on the product body by "inkjet coding" or "labeling".

3. The transfer film using hidden image coding technology according to claim 1, characterized in that: The preparation process of the transfer film is as follows: Step S1: Determine the slitting width Determine the slitting direction of the transfer film according to the transfer pattern, and determine the slitting width of the small roll transfer film according to the product specifications; Step S2: Determine the optimal cutting plan According to the standard width of the transfer film and the slitting width of the small roll transfer film, the optimal slitting scheme is determined through calculation and analysis. The slitting scheme includes the slitting quantity of the small roll transfer film and the slitting area width between adjacent slitting rolls; Step S3: Customizing the electroplate roller coated with release material Customizing an electric engraving roller according to the slitting scheme of step S2, the electric engraving roller having a coated plate for loading and a smooth plate for not loading, the width of the smooth plate being determined based on the width of the slitting area in step S2; Step S4: Applying release material A release material is coated on the surface of the substrate layer (1) using a customized electric engraving roller to obtain a release area coated with the release material and a partial release layer (2) in a non-release area not coated with the release material. The release area for loading ensures that the aluminum-plated layer (4) and the substrate layer (1) are peeled off from each other. The non-release area for not loading is a slitting area that cannot be peeled off and serves as a reference position for cutting and slitting, effectively isolating the knife body from the release layer. area, so as to prevent the release layer (2) in the release area from directly contacting the blade body; Step S5: coating the information layer (3) A dye is coated on the surface of a local release layer (2) to form an information layer (3), and a variable digital pattern is printed on the information layer (3); Step S6: Aluminum plating A metal aluminum layer is deposited on the surface of the information layer (3) by vacuum aluminum deposition; Step S7: Apply adhesive Coating a backing adhesive on the surface of the aluminum-plated layer (4) to form a transfer adhesive layer (5); Step S8: Cutting Adjust the position of the slitting knife according to the predetermined slitting plan so that the blade of the slitting knife cuts the non-release area of ​​the transfer film; Step S9: Transfer Put the cut small rolls of transfer film onto the machine for transfer.

4. The transfer film using hidden image coding technology according to claim 1, characterized in that: The inner code is a plain code.

5. The transfer film using hidden image coding technology according to claim 1, characterized in that: The inner code is a secret code.

6. An anti-counterfeiting method using the transfer film using hidden image coding technology as claimed in any one of claims 1 to 5, characterized in that: The steps include: Step Y1: Use a scanning device to scan the outer code on the packaging box. The scanning result prompts you to continue scanning the inner code on the product body. Step Y2: After scanning the inner code according to the outer code prompt, if the product is authentic, the scan result will show the product authenticity prompt information, otherwise it is counterfeit.

7. An anti-counterfeiting method using the transfer film using hidden image coding technology as claimed in claim 4, characterized in that: The steps include: Step M1: Use a scanning device to scan the inner code on the product body. The scanning result prompts you to continue scanning the outer code on the packaging box; Step M2: After scanning the outer code according to the inner code prompt, if the product is authentic, the scan result will show the product authenticity prompt information, otherwise it is counterfeit.

8. An anti-counterfeiting method using the transfer film using hidden image coding technology as claimed in claim 5, characterized in that: The steps include: Step A1, remove the obstructed part of the secret code to reveal the inner code; Step A2: Use a scanning device to scan the internal code on the product body. If the product is genuine, the scanning result will show the product authenticity prompt information, otherwise it is counterfeit.

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