Invisible light-responsive embossing hologram sticker for preventing illegal duplication and manufacturing method therefor

Abstract

Provided are an invisible light-responsive embossing hologram sticker for preventing illegal duplication and a manufacturing method therefor. A hologram sticker according to an embodiment of the present invention comprises: a base layer; a hologram layer positioned below the base layer and having a security pattern which is detected in an invisible wavelength range; and an adhesive layer which is positioned below the hologram layer and attached to an object. Accordingly, by applying the hidden security pattern, which is detected in the invisible wavelength range, below the hologram pattern of the invisible light-responsive hologram sticker, security may be enhanced by making illegal duplication difficult and preventing the hologram pattern from being identified with the naked eye.

Description

Invisible light-responsive embossed hologram sticker for preventing counterfeiting and its manufacturing method

[0001] The present invention relates to a hologram sticker, and more particularly, to a hologram sticker used for preventing illegal copying and a method for producing the same.

[0002] Hologram stickers are widely used for purposes such as authenticating products and sealing them. As shown in Figure 1, a hologram pattern is printed inside the hologram sticker.

[0003] Hologram stickers produced using this technique can be easily copied by anyone using a scanner or camera, as shown in Fig. 2, and thus can be exploited for the production of illegal copies.

[0004] Even hologram stickers with the above structure have a serious security vulnerability in that their contents can be confirmed with the naked eye.

[0005] The present invention has been devised to solve the above problems, and the purpose of the present invention is to provide an invisible light-responsive embossed hologram sticker and a manufacturing method thereof that applies a hidden security pattern detected in an invisible wavelength range, as a means to make illegal copying difficult and to make a hologram pattern invisible to the naked eye.

[0006] According to one embodiment of the present invention for achieving the above purpose, a hologram sticker comprises: a substrate layer; a hologram layer located below the substrate layer and having a security pattern detected in an invisible wavelength range formed thereon; and an adhesive layer located below the hologram layer and attached to an object.

[0007] The holographic layer may include a holographic pattern layer having a holographic pattern printed thereon; a fluorescent film layer that reacts to invisible light on which a security pattern is formed;

[0008] The fluorescent film may be positioned beneath the holographic pattern layer.

[0009] The fluorescent film layer may include a first fluorescent film layer having a first security pattern formed thereon and responsive to a first invisible light; and a second fluorescent film layer having a second security pattern formed thereon and responsive to a second invisible light.

[0010] The second fluorescent film layer may be positioned below the first fluorescent film layer.

[0011] The first invisible light may be one of infrared and ultraviolet light, and the second invisible light may be another of infrared and ultraviolet light.

[0012] The first security pattern may be one of a barcode and a QR code, and the second security pattern may be one of a barcode and a QR code.

[0013] The content of the code expressed in the first security pattern may be different from the content of the code expressed in the second security pattern.

[0014] The security pattern formed on the holographic layer can be identified by irradiating it with invisible light.

[0015] According to another aspect of the present invention, a method for manufacturing a hologram sticker is provided, comprising: forming a security pattern detectable in an invisible wavelength range on a hologram layer; positioning a hologram layer under a substrate layer; and attaching an adhesive layer to be attached to an object under the hologram layer.

[0016] According to another aspect of the present invention, a hologram sticker is provided, characterized by including: a substrate layer; a hologram layer located below the substrate layer and having a security pattern detected in an invisible wavelength range formed thereon; a release layer located between the substrate layer and the hologram layer and more strongly adhered to the substrate layer than the hologram layer; and an adhesive layer located below the hologram layer and adhered to an object.

[0017] According to another aspect of the present invention, a method for manufacturing a hologram sticker is provided, comprising: forming a security pattern detectable in an invisible wavelength range on a hologram layer; attaching a release layer to a lower portion of a substrate layer; attaching a hologram layer to a lower portion of the release layer; and attaching an adhesive layer to a lower portion of the hologram layer.

[0018] As described above, according to embodiments of the present invention, by applying a hidden security pattern that is detected in an invisible wavelength range below the hologram pattern of an invisible light-responsive hologram sticker, illegal copying is made difficult and security is enhanced by making the hologram pattern invisible to the naked eye.

[0019] Figure 1 shows a method for printing a hologram on an existing hologram sticker.

[0020] Figure 2 is an example of illegal reproduction of a hologram sticker.

[0021] Figure 3 is a structure of an invisible light-responsive embossing hologram sticker according to one embodiment of the present invention.

[0022] Figure 4 shows the detailed structure of the hologram layer.

[0023] Figure 5 is a cross-sectional view of a holographic printing layer.

[0024] Figure 6 shows the effect of a hologram sticker according to an embodiment of the present invention.

[0025] Figure 7 is a method for manufacturing an invisible light-responsive embossing hologram sticker according to another embodiment of the present invention.

[0026] Figure 8 is an example of a method for producing a hologram printing layer.

[0027] Figure 9 is a non-visible light responsive embossing hologram sticker scanning device according to another embodiment of the present invention.

[0028] Fig. 10 is a method for scanning an invisible light-responsive embossed hologram sticker using a scanning device.

[0029] Hereinafter, the present invention will be described in more detail with reference to the drawings.

[0030] In an embodiment of the present invention, an invisible light-responsive embossed hologram sticker for preventing illegal copying and a method for producing the same are presented.

[0031] This is a technology that forms security patterns on fluorescent film layers that react to invisible light and adds them to the bottom of the hologram pattern of a hologram sticker used for security purposes, thereby implementing a hidden security pattern that is detected in the invisible wavelength range, thereby making illegal copying difficult and making the hologram pattern invisible to the naked eye.

[0032] FIG. 3 is a diagram illustrating the structure of an invisible light-responsive embossed hologram sticker according to an embodiment of the present invention. As illustrated, the invisible light-responsive embossed hologram sticker according to an embodiment of the present invention is configured to include a base layer (110), a release layer (120), a hologram layer (130), and an adhesive layer (140).

[0033] The substrate layer (110) serves as a support for other components (120, 130, 140) of the hologram sticker, while protecting other components (120, 130, 140) of the hologram sticker from external pressure or friction.

[0034] The heteromorphic layer (120) is located between the substrate layer (110) and the hologram layer (130), and is strongly adhered to the upper substrate layer (110) while weakly adhered to the lower hologram layer (130).

[0035] Accordingly, when the substrate layer (110) is removed, the release layer (120) is easily separated from the hologram layer (130), and the substrate layer (110) and the hologram layer (130) are separated by the release layer (120), making it impossible to reuse the hologram sticker.

[0036] The hologram layer (130) is located below the heteromorphic layer (120) and is a layer on which a hologram pattern is printed. The detailed structure of the hologram layer (130) will be described in detail later with reference to FIG. 4.

[0037] The adhesive layer (140) is a layer attached to an object located below the hologram layer (130), and an adhesive material is applied thereto.

[0038] Hereinafter, the detailed structure of the hologram layer (130) will be described in detail with reference to FIG. 4. As illustrated in FIG. 4, the hologram layer (130) is configured to include a coloring layer (131), a thin film layer (132), and a hologram printing layer (133).

[0039] The hologram printing layer (133) is a layer on which a hologram pattern detectable in visible light is printed and a hidden security pattern detectable in the invisible wavelength range is formed. The detailed structure of the hologram printing layer (133) will be described in detail later with reference to FIG. 5. The thin film layer (132) forms the surface of the hologram printing layer (133), and the coloring layer (131) provides a color effect.

[0040] Hereinafter, the hologram printing layer (133) will be described in detail with reference to FIG. 5. FIG. 5 is a cross-sectional view of the hologram printing layer (133). As illustrated in FIG. 5, the hologram printing layer (133) is configured to include a hologram pattern layer (133-1), an ultraviolet-responsive fluorescent film layer (133-2), and an infrared-responsive fluorescent film layer (133-3).

[0041] The holographic pattern layer (133-1) is a layer on which a holographic pattern is printed, and reflects visible light to create a specific pattern.

[0042] The ultraviolet responsive fluorescent film layer (133-2) is located below the hologram pattern layer (133-1), has a security pattern formed on it, and is a film layer that reacts to incident ultraviolet light to emit visible light of a specific wavelength, in the embodiment of the present invention, blue visible light.

[0043] The infrared responsive fluorescent film layer (133-3) is located below the ultraviolet responsive fluorescent film layer (133-2), has a security pattern formed on it, and is a film layer that reacts to infrared light incident thereon and emits visible light of a specific wavelength, in the embodiment of the present invention, green visible light.

[0044] In Fig. 5, the ultraviolet ray-responsive fluorescent film layer (133-2) is illustrated as being positioned on top and the infrared ray-responsive fluorescent film layer (133-3) on the bottom, but this is merely exemplary. The positions of the two may be interchanged. Furthermore, the order of the hologram pattern layer (133-1), the ultraviolet ray-responsive fluorescent film layer (133-2), and the infrared ray-responsive fluorescent film layer (133-3) may be interchanged.

[0045] The security pattern formed on the ultraviolet responsive fluorescent film layer (133-2) and the infrared responsive fluorescent film layer (133-3) may be in the form of a barcode or QR code, and may also be implemented as a pattern representing other formats.

[0046] The content of the code expressed in the security pattern of the ultraviolet-sensitive fluorescent film layer (133-2) and the content of the code expressed in the security pattern of the infrared-sensitive fluorescent film layer (133-3) may be different from each other. For example, the security pattern of the ultraviolet-sensitive fluorescent film layer (133-2) may include information about the production plant that produced the product to which the hologram sticker is attached, and the security pattern of the infrared-sensitive fluorescent film layer (133-3) may include information about the production time of the product.

[0047] According to an embodiment of the present invention, a hologram sticker, as illustrated in FIG. 6, 1) when irradiated with ultraviolet light, a security pattern formed on an ultraviolet-responsive fluorescent film layer (133-2) is visible, 2) when irradiated with infrared light, a security pattern formed on an infrared-responsive fluorescent film layer (133-3) is visible, and 3) when irradiated with visible light, a hologram pattern printed on a hologram pattern layer (133-1) is visible.

[0048] In addition, even if irradiated with ultraviolet or infrared rays, the holographic pattern printed on the holographic pattern layer (133-1) is visible in a situation where visible light exists as external light, and the security pattern of the ultraviolet-responsive fluorescent film layer (133-2) or infrared-responsive fluorescent film layer (133-3) cannot be identified, so the holographic pattern cannot be replicated by methods such as normal scanning or camera photography.

[0049] FIG. 7 is a flowchart provided to explain a method for manufacturing an invisible light-responsive embossing hologram sticker according to another embodiment of the present invention.

[0050] As shown, a hologram pattern is printed on a hologram pattern layer (133-1) (S210), a security pattern is formed on an ultraviolet-responsive fluorescent film layer (133-2) (S220), and a security pattern is formed on an infrared-responsive fluorescent film layer (133-3) (S230).

[0051] The hologram pattern layer (133-1), the ultraviolet responsive fluorescent film layer (133-2), and the infrared responsive fluorescent film layer (133-3) produced through the following steps S210 to S230 are thermally bonded as shown in Fig. 8 to produce a hologram printing layer (133) (S240).

[0052] Afterwards, a thin film layer (132) is laminated on top of the hologram printing layer (133) (S250), and a coloring layer (131) is laminated on top of the thin film layer (132) (S260), thereby completing the hologram layer (130).

[0053] Then, a release layer (120) is attached to the lower part of the substrate layer (110) (S270), a hologram layer (130) is attached to the lower part of the release layer (120) (S280), and an adhesive layer (140) is attached to the lower part of the hologram layer (130) (S290).

[0054] FIG. 9 is a diagram illustrating the configuration of an invisible light-responsive embossing hologram sticker scanning device according to another embodiment of the present invention. As illustrated, the hologram sticker scanning device according to an embodiment of the present invention is configured to include a light-emitting unit (310), a variable filter (320), an image sensor (330), an image processing unit (340), and a control unit (350).

[0055] The light emitting unit (310) is a light source that sequentially or selectively irradiates infrared and ultraviolet rays under the control of the control unit (350).

[0056] The variable filter (320) is synchronized with the light emission of the light emitting unit (310) under the control of the control unit (350) and passes the corresponding wavelength band. Specifically, 1) when ultraviolet light is emitted from the light emitting unit (310), only the blue wavelength band is passed, and 2) when infrared light is emitted from the light emitting unit (310), only the green wavelength band is passed.

[0057] The image sensor (330) acquires an image of an invisible light-responsive embossed hologram sticker incident through a variable filter (320). Specifically, 1) when ultraviolet light is emitted from the light-emitting unit (310), the image sensor (330) acquires an image of a security pattern formed on an ultraviolet-responsive fluorescent film layer (133-2), and 2) when infrared light is emitted from the light-emitting unit (310), the image sensor (330) acquires an image of a security pattern formed on an infrared-responsive fluorescent film layer (133-3).

[0058] The image processing unit (340) performs necessary preprocessing on the image acquired from the image sensor (330) and recognizes the contents of the code expressed in the security patterns from the preprocessed image.

[0059] The control unit (350) determines the authenticity of the hologram sticker based on the recognition result of the image processing unit (340) and performs subsequent control based on the determination result.

[0060] FIG. 10 schematically illustrates a process of obtaining an image of a security pattern formed on an ultraviolet-sensitive fluorescent film layer (133-2) and an image of a security pattern formed on an infrared-sensitive fluorescent film layer (133-3) using a hologram sticker scanning device according to an embodiment of the present invention.

[0061] As shown in the figure, in order to obtain an image of a security pattern, it is necessary to block visible light, which is external light, so it is recommended to provide an external light blocking structure in the shape of a waveguide capable of blocking external light on the front of the hologram sticker scanning device.

[0062] So far, a preferred embodiment of an invisible light-responsive embossed hologram sticker for preventing illegal copying and a method for producing the same have been described in detail.

[0063] In the above embodiment, a method for detecting counterfeit holograms using a hidden security pattern detected in an invisible wavelength range is presented to prevent existing sticker-type genuine product authentication holograms from being easily copied.

[0064] By attaching a material that has fluorescent properties in invisible light under a holographic pattern in the form of a security film with an engraved pattern, it is possible to determine whether the holographic sticker is a duplicate through an invisible light detector.

[0065] In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications can be made by a person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present invention.

Claims

1. Base layer; A holographic layer located at the lower portion of the substrate layer, on which a security pattern detectable in the invisible wavelength range is formed; A hologram sticker characterized by including an adhesive layer located below a hologram layer and attached to an object.

2. In claim 1, The holographic layer is, A holographic pattern layer with a holographic pattern printed on it; A hologram sticker comprising a fluorescent film layer that reacts to invisible light on which a security pattern is formed.

3. In claim 2, Fluorescent film, A hologram sticker characterized by being located at the bottom of a holographic pattern layer.

4. In claim 2, The fluorescent film layer A first security pattern is formed, and a first fluorescent film layer responsive to a first invisible light; A hologram sticker characterized by comprising a second fluorescent film layer on which a second security pattern is formed and which reacts to a second invisible light.

5. In claim 4, The second fluorescent film layer is, A hologram sticker characterized by being located on the lower side of the first fluorescent film layer.

6. In claim 4, The first invisible light is, One of infrared and ultraviolet rays, The second invisible light is, A holographic sticker characterized by either infrared or ultraviolet rays.

7. In claim 4, The first security pattern is, One of barcode and QR code, The second security pattern is, A hologram sticker featuring either a barcode or a QR code.

8. In claim 4, The content of the code expressed in the first security pattern is: A hologram sticker characterized by a code whose content is different from that expressed in the second security pattern.

9. In claim 1, The security pattern formed on the hologram layer is A holographic sticker characterized by being identifiable by examining invisible light.

10. A step of forming a security pattern detected in the invisible wavelength range on the hologram layer; A step of positioning a hologram layer under the substrate layer; A method for manufacturing a hologram sticker, characterized by comprising the step of attaching an adhesive layer that is attached to an object on the lower side of a hologram layer.

11. Base layer; A holographic layer located at the lower portion of the substrate layer, on which a security pattern detectable in the invisible wavelength range is formed; A release layer located between the substrate layer and the hologram layer and more strongly attached to the substrate layer than the hologram layer; and A hologram sticker characterized by including an adhesive layer located below a hologram layer and attached to an object.

12. A step of forming a security pattern detected in the invisible wavelength range on the hologram layer; A step of attaching a release layer to the lower part of the substrate layer; A step of attaching a hologram layer to the lower part of the heterogeneous layer; A method for manufacturing a hologram sticker, characterized by comprising the step of attaching an adhesive layer to a lower portion of a hologram layer.

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