Security file with specific security feature, production process and production device

By printing the UV adhesive slurry layer on the substrate of the anti-counterfeiting document and heating and pressing it with the transfer film tape, the problems of single anti-counterfeiting document processing technology and limited anti-counterfeiting capabilities in the prior art are solved, and high-precision concave and convex feel and enhanced anti-counterfeiting capabilities are achieved.

CN119502590APending Publication Date: 2025-02-25CHINA BANKNOTE PRINTING & MINTING +1
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Patent Information

Application Number
CN202411756071.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-02-25

AI Technical Summary

Technical Problem

In the prior art, the processing technology of anti-counterfeiting documents is single, the process is strict, and the anti-counterfeiting ability is limited. The hot stamping process cannot form an accurate concave and convex feel for overprinting, and the concave and convex feel weakened with the use time.

Method used

A secure file structure including a substrate, an adhesive layer and an image layer is adopted. The UV adhesive slurry layer is printed on the substrate through a printing unit, the UV drying unit curses the adhesive layer, the hot pressing unit and the transfer film belt are heated and pressed, and the cooling and separation unit peels off the unbonded transfer film belt to output the anti-counterfeiting file.

Benefits of technology

It significantly improves the surface morphology of the substrate, improves the accuracy and quality of hot stamping transfer, forms a stable concave and convex feel, and enhances the anti-counterfeiting ability and security of anti-counterfeiting documents.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a security file with specific security features, a production process and a production device, the security file comprises a base material, a bonding layer is arranged in a target area of the base material, a security device transferred according to a target pattern is arranged on the bonding layer, and the security device has a specific optical image and a certain protruding height; the production device comprises a plurality of conveying rollers, a printing unit, a drying unit, a hot pressing unit, a cooling unit and a separating unit. The printing unit is used for printing a UV bonding slurry layer on the base material according to the printing pattern, and the drying unit is used for curing the UV bonding slurry layer; the transfer printing film belt and the UV bonding slurry layer are melted and bonded through the hot pressing unit; after hot pressing is completed, shaping is conducted through a cooling and separating unit, and the transfer printing film belt which is not bonded with the UV bonding slurry layer is stripped; a bonding area and a non-bonding area are formed on a transfer printing film belt according to a to-be-printed pattern through the form change of UV bonding slurry, pattern hot stamping is achieved by stripping the non-bonding area with weak bonding force, the image is clear, positioning is accurate, and meanwhile the advantage of being high in concave-convex feeling is achieved.
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Description

Technical Field

[0001] The present application relates to the technical field of anti-counterfeiting document production, and in particular to a security document with specific security features, a production process and a production device. Background Art

[0002] In the field of special printing such as banknote printing, anti-counterfeiting documents refer to banknotes, bank notes and various financial certificates. In order to improve the anti-counterfeiting property of anti-counterfeiting documents, the hot stamping film anti-counterfeiting technology in the existing technology has been widely used.

[0003] Single-sheet operations are generally used in the production process of anti-counterfeiting documents. The surface of the substrate of the anti-counterfeiting documents is rough, and the hot stamping production process has strict requirements. At the same time, the hot stamping process in the existing technology cannot form an accurate concave and convex feel for overprinting, and the concave and convex feel formed by the hot stamping process in the existing technology will gradually weaken until it disappears with the extension of use time; at the same time, the production process in the existing technology also has the problem that the two images (contour image, transfer image) cannot accurately correspond to the raised parts. Summary of the invention

[0004] The main purpose of this application is to provide a security document, production process and production device with specific security features, aiming to solve the defects of the prior art such as single processing technology, strict process and limited anti-counterfeiting ability.

[0005] This application achieves the above objectives through the following technical solutions:

[0006] A security document, production process and production device having specific security features, the security document comprising: a substrate, an image bearing object;

[0007] An adhesive layer, wherein the adhesive layer is disposed in a target area on the substrate, and the top surface of the adhesive layer protrudes from the surface of the substrate to form bumps with a tactile function; the bumps are accurately distributed in a designated area of ​​the substrate according to a set pattern, and the bumps are spliced ​​and / or separated from each other;

[0008] An image layer, the image layer is arranged in the target area on the adhesive layer; the image layer includes a plurality of specific anti-counterfeiting images; the image position has a specific alignment relationship with the adhesive layer;

[0009] The security documents include banknotes, currency notes, passports and other ticket and visa cards;

[0010] The production device of the security document organically integrates a printing unit, a UV drying unit, a heat pressing transfer unit, a cooling separation unit and a plurality of conveying rollers, and the printing unit is flexibly configured according to the process requirements;

[0011] The printing unit prints an adhesive layer on the substrate according to a target pattern, and the adhesive layer is printed using UV adhesive paste; the UV adhesive paste undergoes a significant change in its surface state at high temperature and without changing its morphology, and has an adhesive effect; when the temperature is lowered, it recovers to an interface with stable performance, and the formation of the adhesive layer belongs to an additive manufacturing process;

[0012] A UV drying device, which is arranged at the rear side of the printing unit along the material conveying direction, and solidifies the adhesive layer printed by the printing unit using UV adhesive paste;

[0013] A heat pressing unit is arranged at the rear side of the drying unit along the material conveying direction, and heats and presses the adhesive layer printed with UV adhesive paste and the transfer film tape to form a semi-finished anti-counterfeiting document; wherein the adhesive layer on the anti-counterfeiting document and the anti-counterfeiting protrusion on the transfer film tape are partially fused and bonded;

[0014] A cooling and separation unit is arranged at the rear side of the hot pressing unit along the material conveying direction, cools the semi-finished anti-counterfeiting document to a separation temperature, peels off the transfer film tape that is not bonded to the adhesive layer from the semi-finished anti-counterfeiting document, and outputs the anti-counterfeiting document;

[0015] The production process includes the following key steps:

[0016] Input the substrate to be printed;

[0017] Printing a specific image in a specified area of ​​the substrate using a UV adhesive paste having specified properties by a printing unit;

[0018] Drying the specific image by a UV drying device;

[0019] The substrate with a specific image and the transfer film with a specific pattern are accurately aligned through a heat pressing unit, and then heated and pressed as a whole to form a semi-finished anti-counterfeiting document;

[0020] The transfer film tape is separated from the substrate by a cooling separation unit, and the anti-counterfeiting document is output.

[0021] Optionally, the printing unit includes a screen printing device, a gravure printing device or an inkjet printing device.

[0022] Optionally, the screen printing device includes a supporting screen, the supporting screen is wrapped with a printing layer made of photosensitive paste, and the printing layer is hollowed out and engraved with glue leakage holes that are compatible with the pattern to be printed.

[0023] Optionally, the gravure printing device includes a plate cylinder and a gluing plate, wherein the plate cylinder is provided with a gluing plate, and the gluing plate is provided with a curved gluing surface that fits the gluing plate.

[0024] Optionally, the hot pressing unit includes a hot pressing roller and a plurality of squeezing rollers, each of the squeezing rollers is arranged around the axis of the hot pressing roller; and a hot pressing gap is provided between each of the squeezing rollers and the hot pressing roller.

[0025] Optionally, the inlet end of the heat pressing unit is also provided with a plurality of auxiliary conveying devices for conveying the transfer film tape.

[0026] Optionally, the cooling and separation unit comprises a cooling roller, and the cooling roller is connected to a mold cooling machine for conveying cooling water thereto; a first recovery roller and a peeling sheet are also provided at the outlet end of the cooling roller.

[0027] Optionally, the hot pressing unit and the cooling unit are also provided with UV lamps.

[0028] Compared with the prior art, this application has the following beneficial effects:

[0029] The anti-counterfeiting document described in the present application comprises a substrate, an adhesive layer is arranged in a target area of ​​the substrate, and a security device is also arranged on the adhesive layer, the security device is transferred to the adhesive layer according to a target pattern; the security device and the adhesive layer have an alignment relationship; in the height direction, the security device protrudes out of the substrate;

[0030] The present application also discloses a production device for the above-mentioned anti-counterfeiting document, comprising a plurality of conveying rollers, on which a printing unit, a drying unit, a hot pressing unit, and a cooling and separating unit are sequentially arranged along the flow direction of the material; during use, the conveying roller conveys the prefabricated substrate to the printing unit, the printing unit prints a UV adhesive slurry layer on the substrate according to the printing pattern, and the drying unit dries and solidifies the printed UV adhesive slurry layer; the hot pressing unit adheres the transfer film tape to the cured UV adhesive slurry layer, and finally adheres the transfer film tape and the UV adhesive slurry layer to each other by heating and pressing again; after the semi-finished anti-counterfeiting document after hot pressing passes through the cooling and separating unit, the temperature is reduced to the separation temperature, and at the same time, the transfer film tape that is not adhered to the UV adhesive slurry layer is peeled off from the semi-finished anti-counterfeiting document, and the anti-counterfeiting document is output;

[0031] The present application first prints a UV adhesive slurry layer on the substrate, and the UV adhesive slurry layer is adapted to the printed pattern; then the UV adhesive slurry layer is solidified and sent to a hot pressing unit, and the UV adhesive slurry layer is pressed and bonded to the transfer film tape in the hot pressing unit. Under the action of high temperature, the UV adhesive slurry layer will melt, and the melted UV adhesive slurry will fuse with the back glue of the transfer film tape. Since the UV adhesive slurry layer is printed according to the pattern to be printed, the above process is equivalent to realizing the transfer of the pattern to be printed through the UV adhesive slurry; then the UV adhesive slurry layer is tightly bonded to the transfer film tape by cooling control;

[0032] Since the UV adhesive paste is distributed according to the pattern to be printed, after the hot pressing bonding is completed, the peeling layer of the transfer film tape in some areas will not fuse with the UV adhesive paste, while in some areas it will fuse with each other, which will lead to differences in the bonding force of the transfer film tape, and the bonding force of the area bonded to the UV adhesive paste layer is stronger;

[0033] The cooling and separation unit can be used to peel the transfer film from the substrate. The area where the transfer film does not contact the UV adhesive layer will not be transferred, while the image transfer layer on the area in contact with the UV adhesive layer will adhere to the substrate due to the stronger adhesive force, so that the image on the transfer film can be accurately transferred to the specified position of the substrate according to the preset printing pattern.

[0034] The UV adhesive slurry layer formed on the surface of the substrate by printing in the present application can significantly improve the surface morphology of the substrate, provide a good foundation for subsequent hot stamping transfer, and greatly reduce the requirements for the hot stamping transfer process.

[0035] Compared with the prior art, the present application forms a UV adhesive slurry layer on the surface of the substrate by printing, and the pattern forming precision is more precise and the accuracy is higher. Therefore, the UV adhesive slurry layer can form the required pattern on the metal foil layer more accurately, realize the fine transfer of the image, and is conducive to improving the hot stamping quality; and when different hot stamping patterns need to be formed, only different printing plates need to be replaced to realize the rapid switching of images, thereby meeting the conversion efficiency of hot stamping of various images;

[0036] At the same time, the UV adhesive slurry layer formed by printing has good consistency, which can effectively improve the consistency of the anti-counterfeiting document, thereby improving the printing quality of the anti-counterfeiting document.

[0037] Secondly, in the prior art, the concave-convex feel is obtained by pressurized concave-convex processing, which is actually to change the morphological structure of the substrate by concave-convex processing. However, as time goes by, the concave-convex points on the substrate will gradually recover or wear out. Therefore, in the later processing, storage and transportation links, the concave-convex feel will gradually weaken;

[0038] The technical solution described in the present application can hot-stamp part of the transfer film tape onto the substrate as needed, and the transfer film tape protrudes from the substrate to form an obvious concave and convex feel. Therefore, the concave and convex feel of the anti-counterfeiting document printed using the technical solution described in the present application comes from the printed UV adhesive paste and has nothing to do with the deformation of the substrate. The deformation recovery of the substrate will not have any effect on the concave and convex feel. Therefore, in the later processing, storage and transportation links, the concave and convex feel will not weaken, which effectively improves the stability and reliability of the anti-counterfeiting document identification features, thereby improving the security of the anti-counterfeiting document.

[0039] At the same time, since the concave and convex feel of the present application comes from the UV adhesive paste under the transfer film tape, its morphology and position can be precisely controlled through printing parameters, so that the appearance of the security device has a high consistency during the hot stamping process. Therefore, the technical solution described in the present application can form a precise raised feel of overprinting on the anti-counterfeiting document.

[0040] In addition, the color gamut and image accuracy of security devices made using various optical technologies can significantly exceed the range achievable by conventional printing and copying technology. The anti-counterfeiting document described in the present invention deeply integrates image elevation features and image optical features that are difficult to achieve with ordinary flat image copying technology through a hot stamping process under the constraint of precise positioning technology. It has high tactile, high registration, high reflection, high saturation, high brightness or dynamic features. Therefore, scanners and other devices cannot accurately obtain image information, and it can effectively resist the copying of image copying devices such as scanners, printers, and printing presses, thereby raising the threshold for counterfeiting of anti-counterfeiting documents and thereby improving the security of anti-counterfeiting documents. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a security document with specific security features provided in Implementation Example 1 of the present application;

[0042] Figure 2 A device for producing a security document with specific security features provided in Embodiment 2 of the present application;

[0043] Figure 3 A schematic diagram of the structure of a printing unit provided in Embodiment 2 of the present application;

[0044] Figure 4 A device for producing a security document with specific security features provided in Embodiment 3 of the present application;

[0045] Figure 5 A schematic diagram of the structure of a device for producing a security document with specific security features provided in Embodiment 4 of the present application;

[0046] Figure numerals: 1-substrate, 2-adhesive layer, 3-anti-counterfeiting layer, 4-transport roller, 5-UV drying unit, 6-support screen, 7-printing layer, 8-glue leakage hole, 9-plate cylinder, 10-glue plate, 11-glue surface, 12-hot pressing roller, 13-squeezing roller, 14-auxiliary conveying device, 15-cooling roller, 16-mold cooling machine, 17-first recovery roller, 18-peeling sheet, 19-UV lamp.

[0047] The purpose, features and advantages of this application will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] Implementation Method 1

[0053] Reference Figure 1 This embodiment is an optional mode of the present application, which discloses an anti-counterfeiting document with a concave-convex tactile feeling and a specific image, including a substrate 1, wherein the substrate 1 includes printing paper for printing banknotes or special certificates, and may also be other base layers of printing banknotes or special certificates, such as plastic;

[0054] An adhesive layer 2 is provided on the substrate 1, and the adhesive layer 2 is provided in a target area on the substrate 1;

[0055] The adhesive layer 2 is arranged in the target area on the substrate 1, and the top surface of the adhesive layer 2 protrudes from the surface of the substrate 1 to form a bump with a tactile function; the bumps are accurately distributed in the specified area of ​​the substrate 1 according to the set pattern, and the bumps are spliced ​​and / or separated from each other; the bumps protruding from the surface of the substrate have a significant change in surface state at high temperature and without morphological changes, and have an adhesive effect; when the temperature is reduced, they are restored to an interface with stable performance, and the formation of the adhesive layer belongs to the additive manufacturing process;

[0056] At the same time, a target area is selected on the adhesive layer, and an image layer is arranged in the target area. The image layer 3 includes a number of specific anti-counterfeiting images, and the image position has a specific alignment relationship with the adhesive layer 2;

[0057] While the adhesive layer has a certain tactile feel, there is a fixed image on the top of its raised part. It is an organic combination of thermal transfer technology and positioning hot stamping technology. This method has no precedent in the field of banknote printing.

[0058] It should be pointed out that, in this embodiment, the target area refers to a certain designated area, and its size, shape and position are set according to actual needs; the set pattern refers to a pre-designed pattern for forming a concave-convex feel.

[0059] like Figure 1 As shown, along the direction indicated by F, the image layer 3 is disposed on the adhesive layer 2 , and then the combination of the image layer 3 and the adhesive layer 2 is bonded to the substrate 1 .

[0060] Implementation Method 2

[0061] Reference Figure 2 to Figure 3 This embodiment is an optional embodiment of the present application, which discloses a production device for anti-counterfeiting documents, including a plurality of conveying rollers 4, along the material conveying direction, a printing unit, a drying unit 5, a hot pressing unit, a cooling unit and a separation unit are sequentially arranged; each of the conveying rollers 4 is disposed in each unit and between adjacent functional units to realize the conveyance of materials;

[0062] The printing unit prints an adhesive layer on the substrate according to a target pattern, and the adhesive layer is printed using UV adhesive paste; the UV adhesive paste undergoes a significant change in its surface state at high temperature and without changing its morphology, and has an adhesive effect; when the temperature is lowered, it recovers to an interface with stable performance, and the formation of the adhesive layer belongs to an additive manufacturing process;

[0063] The printing unit includes a screen printing device, which includes a supporting screen 6, a supporting lead screw in a cylindrical structure, a supporting frame arranged inside the supporting frame, and a transmission shaft arranged on the supporting frame to connect with an external transmission device; a printing layer 7 made of photosensitive paste is wrapped on the supporting screen 6;

[0064] During the production process of the screen printing device, photosensitive paste is firstly coated on the surface of the screen, and then cured by red cake, and the required pattern to be printed is engraved on the photosensitive paste by a laser engraving machine or a plate exposure machine; and the printing layer 7 is hollowed out to engrave the leakage holes 8 adapted to the pattern to be printed;

[0065] A gluing device is also provided inside the supporting wire mesh 6;

[0066] The UV drying unit comprises a drying box, and the inlet and outlet of the drying box are both provided with a conveying roller 4. Along the material conveying direction, the UV drying unit is arranged at the rear side of the printing unit to solidify the adhesive layer printed by the UV adhesive paste of the printing unit;

[0067] The production device further comprises a heat pressing unit, which is arranged at the rear side of the UV drying unit along the material conveying direction, and heats and presses the adhesive layer printed with UV adhesive paste and the transfer film tape to form a semi-finished anti-counterfeiting document; wherein the adhesive layer on the semi-finished anti-counterfeiting document and the anti-counterfeiting protrusion part on the transfer film tape are partially fused and bonded;

[0068] The hot pressing unit includes a hot pressing roller 12 and a plurality of squeezing rollers 13, wherein 3-4 squeezing rollers 13 are provided, each of the squeezing rollers 13 is arranged around the axis of the hot pressing roller 12, and a hot pressing gap is provided between each of the squeezing rollers 13 and the hot pressing roller 12;

[0069] At the same time, a plurality of auxiliary conveying devices 14 are also provided at the inlet end of the heat pressing unit. The auxiliary conveying devices 14 include a plurality of conveying rollers. The transfer film tape is conveyed to the top of the substrate through the auxiliary conveying devices 13 to complete positioning and registration, and then input into the heat pressing gap after being bonded with the substrate.

[0070] It should be pointed out that in addition to the anti-counterfeiting bump layer, the transfer film tape also has a release layer and a PET carrier layer on the bottom surface of the security device layer; the security device layer can be made of polymer materials in addition to metal foil.

[0071] The PET layer can better maintain the shape of the transfer film tape, thereby improving the efficiency and quality of hot stamping; the release layer can quickly and accurately peel off the transfer film tape that is not bonded to the UV adhesive layer.

[0072] The production device further comprises a cooling and separation unit, which is arranged at the rear side of the hot pressing unit along the material conveying direction, cools the semi-finished anti-counterfeiting document to a separation temperature, peels off the transfer film tape that is not bonded to the adhesive layer from the semi-finished anti-counterfeiting document, and outputs the anti-counterfeiting document;

[0073] The cooling separation unit includes a cooling roller 15, on the inner wall of the cooling roller 15, cooling pipes arranged in a serpentine path are provided, the inlet and outlet ends of the cooling pipes are connected to water pipes through rotary joints, and the water pipes are respectively connected to the mold cooling machine 16, so that cooling water is continuously input into the cooling roller 15 to keep the temperature of the cooling roller 15 stable;

[0074] A first recovery roller and a peeling device are also provided at the outlet end of the cooling roller to realize the rapid peeling of the anti-counterfeiting document and the transfer film tape.

[0075] A conveying roller is also provided between the outlet end of the heat pressing roller 12 and the inlet end of the cooling roller 15. A UV lamp 19 can be provided directly above the conveying roller. The UV lamp 19 can be used to supplement the UV glue exposure so as to deeply cure it, which is beneficial to improve the hot stamping quality of the anti-counterfeiting document.

[0076] In the technical solution described in the present application, UV adhesive slurry is the key to realizing the entire technology. Under high temperature and without morphological change, its surface state undergoes a significant change and has an adhesive effect. When the temperature is lowered, it recovers to an interface with stable performance. The formation of the adhesive layer belongs to the additive manufacturing process. There is no precedent for the application of this UV adhesive slurry in the field of banknote printing.

[0077] Implementation 3

[0078] Reference Figure 4 This embodiment is an optional embodiment of the present application, which discloses a production device for anti-counterfeiting documents, including a plurality of conveying rollers 4, along the material conveying direction, a printing unit, a drying unit 5, a hot pressing unit, a cooling unit and a separation unit are sequentially arranged; each of the conveying rollers 4 is disposed in each unit and between adjacent functional units to realize the transfer of materials;

[0079] The printing unit includes a gravure printing device, which includes a plate cylinder 9 and a gluing plate 10. The plate cylinder 9 is provided with a gravure printing plate, and the gluing plate 10 is provided with a gluing surface 11 with an arc-shaped structure. The gluing surface 11 is fitted with the gravure printing plate to achieve gluing.

[0080] Implementation 4

[0081] Reference Figure 5This embodiment is an optional embodiment of the present application, which discloses a production device for anti-counterfeiting documents, including a plurality of conveying rollers 4, along the material conveying direction, a printing unit, a drying unit, a hot pressing unit and a cooling separation unit are sequentially arranged; each of the conveying rollers is disposed in each unit and between adjacent functional units to realize the transfer of materials;

[0082] The printing unit comprises an inkjet printing device, and the inkjet printer is also connected to a PC control terminal, through which the pattern to be printed is input, and then the inkjet printer is controlled to print a UV adhesive slurry layer on the substrate.

[0083] The printing method of the present application is an organic combination of UV printing and hot stamping technology. The above-mentioned combined anti-counterfeiting printing process and equipment configuration have no precedent in the field of banknotes, especially the combination of hot stamping unit and gravure unit, the combination of hot stamping unit and flexographic printing unit, the organic combination of hot stamping unit and digital unit, the combination of hot stamping unit and silk screen unit, and the combination of hot stamping unit and UV casting unit. There is no application precedent in the field of banknote printing.

[0084] At the same time, this application realizes variable data printing with holographic effect and light-variable effect by using the combination of hot stamping unit and digital unit. It can also realize the printing of optical devices with touch, certain microstructure and metallic color, which is unprecedented in the field of banknote printing.

[0085] Correspondingly, the present application also discloses a production process based on the above production device, comprising the following steps:

[0086] S1. Input the substrate to be printed;

[0087] S2, printing a specific image in a specified area of ​​the substrate using a UV adhesive paste with specified properties by a printing unit;

[0088] S3, drying the specific image by a UV drying device;

[0089] S4, accurately aligning the substrate with the specific image and the transfer film with the specific pattern through a heat pressing unit, and then heating and pressing the whole to form a semi-finished anti-counterfeiting document;

[0090] S5. Separating the transfer film tape from the substrate through a cooling separation unit, and outputting the anti-counterfeiting document.

[0091] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A security document, production process and production device with specific security features, characterized in that: The security document comprises: a substrate (1), an image bearing object; An adhesive layer (2), the adhesive layer (2) being arranged in a target area on the substrate (1), the top surface of the adhesive layer (2) protruding from the surface of the substrate (1) to form bumps with a tactile function; the bumps are accurately distributed in a designated area of ​​the substrate (1) according to a set pattern, and the bumps are spliced ​​and / or separated from each other; An image layer (3), the image layer (3) being arranged in a target area on the adhesive layer (2); the image layer (3) comprising a plurality of specific anti-counterfeiting images; the image position having a specific alignment relationship with the adhesive layer (2); The security documents include banknotes, currency notes, passports and other ticket and visa cards; The production device for the security document organically integrates a printing unit, a UV drying unit, a heat pressing transfer unit, a cooling separation unit and a plurality of conveying rollers (4), and the printing unit is flexibly configured according to process requirements; The printing unit prints an adhesive layer on the substrate according to a target pattern, and the adhesive layer is printed using UV adhesive paste; the UV adhesive paste undergoes a significant change in its surface state at high temperature and without changing its morphology, and has an adhesive effect; when the temperature is lowered, it recovers to an interface with stable performance, and the formation of the adhesive layer belongs to an additive manufacturing process; A UV drying unit (5), arranged at the rear side of the printing unit along the material conveying direction, solidifies the adhesive layer printed by the printing unit using UV adhesive paste; A heat pressing unit is arranged at the rear side of the drying unit along the material conveying direction, and heats and presses the adhesive layer printed with UV adhesive paste and the transfer film tape to form a semi-finished anti-counterfeiting document; wherein the adhesive layer on the semi-finished anti-counterfeiting document and the anti-counterfeiting protrusion on the transfer film tape are partially fused and bonded; A cooling and separation unit is arranged at the rear side of the hot pressing unit along the material conveying direction, cools the semi-finished anti-counterfeiting document to a separation temperature, peels off the transfer film tape that is not bonded to the adhesive layer from the semi-finished anti-counterfeiting document, and outputs the anti-counterfeiting document; The production process includes the following key steps: Input the substrate to be printed; Printing a specific image in a specified area of ​​the substrate using a UV adhesive paste having specified properties by a printing unit; Drying the specific image by a UV drying device; The substrate with a specific image and the transfer film with a specific pattern are accurately aligned through a heat pressing unit, and then heated and pressed as a whole to form a semi-finished anti-counterfeiting document; The transfer film tape is separated from the substrate by a cooling separation unit, and the anti-counterfeiting document is output.

2. The device for producing anti-counterfeiting documents according to claim 1, characterized in that: The printing unit includes a screen printing device, a gravure printing device or an inkjet printing device.

3. The device for producing anti-counterfeiting documents according to claim 2, characterized in that: The screen printing device comprises a supporting screen (6), the supporting screen (6) is wrapped with a printing layer (7) made of photosensitive paste, and the printing layer (3) is hollowed out and engraved with glue leakage holes (8) that are compatible with the pattern to be printed.

4. The device for producing anti-counterfeiting documents according to claim 2, characterized in that: The gravure printing device comprises a printing plate cylinder (9) and a gluing plate (10), wherein the printing plate cylinder (9) is provided with a gluing plate, and the gluing plate (10) is provided with an arc-shaped gluing surface (11) which is in contact with the gluing plate.

5. The device for producing anti-counterfeiting documents according to claim 1, characterized in that: The hot pressing unit comprises a hot pressing roller (12) and a plurality of squeezing rollers (13), each of the squeezing rollers (13) being arranged around the axis of the hot pressing roller (12); and a hot pressing gap is provided between each of the squeezing rollers (13) and the hot pressing roller (12).

6. The device for producing anti-counterfeiting documents according to claim 5, characterized in that: The inlet end of the heat pressing unit is also provided with a plurality of auxiliary conveying devices (14) for conveying the transfer film tape.

7. The device for producing anti-counterfeiting documents according to claim 1, characterized in that: The cooling and separation unit comprises a cooling roller (15), and the cooling roller (15) is connected to a mold cooling machine (16) for conveying cooling water thereto; a first recovery roller (17) and a peeling sheet (18) are also provided at the outlet end of the cooling roller.

8. The device for producing anti-counterfeiting documents according to claim 1, characterized in that: The hot pressing unit and the cooling unit may also be provided with a UV lamp (19).