KR100525051B1 - Hologram sticker for prevention of counterfeiting - Google Patents

Abstract

The present invention relates to a hologram sticker attached to the surface of the product, and more particularly to a hologram sticker that can prevent forgery by inserting a holographic latent image that can only be identified by the filter film. The present invention provides a hologram layer 30 formed on the base film layer 10, a lower portion of the base film layer 10, and including a metal thin film layer 34 and a hologram uneven relief layer 32. In the anti-falsification hologram sticker comprising a pressure-sensitive adhesive layer 40 formed in the lower portion of the 30, the holographic latent pattern is identified by the filter film 200 is inserted into the holographic uneven stamping layer (32) It provides a forgery and alteration prevention hologram sticker. In addition, an upper protective film 50 composed of an adhesive layer 52 and a protective film layer 54 and having a larger size than the base film layer 10 is stacked on the base film layer 10. Accordingly, the present invention is forged by the latent image pattern which is not visible to the naked eye but only visible by the filter film 200, and is durable by the external protective film 50 which prevents oxidation of the metal thin film layer 34. This has the effect of being improved.

Description

Hologram sticker for prevention of counterfeiting}

The present invention relates to a forgery-resistant hologram sticker, and more particularly to a hologram sticker that can prevent forgery by inserting a holographic latent image pattern that cannot be identified by visual observation and can only be identified by a filter film.

In general, a sticker is attached to the surface of a product or a packaging container of a product for the purpose of advertising the manufacturer or quality of the product, and is printed on a paper or a transparent film coated with pressure-sensitive adhesive or a character or figure that symbolizes the manufacturer. Was mainstream. However, such a sticker has a problem in that a pattern (such as a character or a figure) is simply expressed on a paper or a transparent film by a printing method and thus is easily forged / modulated due to easy duplication. And since once used stickers can be removed and reused, there is a problem that if it is illegally used by others, it can cause economic damage to the legitimate manufacturers and cause credit to be destroyed.

Accordingly, the above problems have been somewhat improved. Recently, a self-destructive sticker which is partially separated, a hologram sticker adopting a hologram technique, and a sticker applying the self-destruction and hologram technique at the same time have been proposed. This will be described with reference to FIG. 1. 1 is a cross-sectional configuration diagram of a forgery-resistant hologram sticker according to the related art, which is applied with self-destruction and hologram techniques simultaneously.

Referring to Figure 1, the forgery-resistant hologram sticker according to the prior art is a base film layer (1), a self-destructive partial release layer (2), a hologram layer (3) is inserted into the interference pattern from the top in order The pressure-sensitive adhesive layer 4, which has an adhesive force on the surface of the product, is sequentially laminated. In the hologram layer 3, a pattern representing a manufacturer, a quality, or the like of the product is inserted. Such interference fringes are expressed on the surface of the metal thin film layer 3b in the form of letters, figures, images, or the like. Therefore, the hologram layer 3 has a basic configuration of the hologram uneven angle layer 3a into which the interference fringe is inserted, and the metal thin film layer 3b providing the surface of the holographic uneven angle layer 3a. And preferably, it further comprises a coloring primer layer (3c) for the color effect as shown in FIG. The partial release layer 2 is partially separated upon removal of the sticker, which can prevent reuse.

However, the interference fringes inserted into the conventional hologram layer 3 are easily read by the naked eye and do not have a separate reading function, and have a problem of being easily forged in general hologram manufacturers. And since the partial release layer 2 has a function of simply preventing reuse, the partial release layer 2 alone cannot prevent forgery and alteration.

In addition, as described above, the hologram layer 3 must essentially have a metal thin film layer 3b. In the conventional hologram sticker including FIG. 1, the metal thin film layer 3b is oxidized by contact with air or water. There was a problem that the hologram function is easily damaged.

Therefore, there is a need for a hologram sticker that can prevent forgery and improve the durability by protecting the metal thin film layer.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide a hologram sticker that can prevent forgery by inserting a holographic latent image pattern that is not discernible by visual observation. have.

In addition, the present invention has another object to provide a hologram sticker to improve the durability by preventing the oxidation of the metal thin film layer by forming an external protective film that can protect the metal thin film layer.

In order to achieve the above object, the present invention includes a base film layer, a hologram layer formed under the base film layer and including a metal thin film layer and a holographic uneven engraving layer, and a pressure-sensitive adhesive layer formed under the hologram layer. In the forgery prevention hologram sticker,

It provides a forgery-resistant hologram sticker in which the holographic latent pattern is identified by the filter film is inserted into the holographic uneven layer.

In the present invention, the holographic latent image pattern is a hidden image that can be identified only by a separately produced filter film and cannot be identified by visual observation, which indicates the manufacturer or quality of the product or identifies the product. A pattern represented by characters, figures, and images that can be displayed.

The hologram sticker according to the present invention has a holographic latent pattern inserted as a hidden image in a holographic uneven layer, so that a pattern (character, figure, image, etc.) expressed by the naked eye is not seen, and separately during the insertion of the holographic latent pattern. The produced filter film should be placed on the surface of the hologram sticker to observe the inserted pattern. That is, the holographic latent image can be seen only by the predetermined filter film.

Therefore, the hologram sticker according to the present invention can be seen only by the predetermined filter film, it is impossible to forgery because it is not known what the pattern is expressed without the predetermined filter film.

In addition, according to the present invention is composed of an adhesive layer and a protective film layer on top of the base film layer, the outer protective film having a larger size than the base film layer is laminated. The outer protective film has a surface area larger than that of the base film layer, which is over laminated to the top of the base film layer. The external protective film is to prevent the oxidation of the metal thin film layer by blocking the intrusion of oxidizing materials such as air, water, etc. into the metal thin film layer, which in turn improves the durability of the sticker.

Hereinafter, with reference to the accompanying drawings showing a preferred embodiment of the present invention will be described in more detail the present invention.

Figure 2 shows a cross-sectional configuration of the forgery and alteration prevention hologram sticker according to an embodiment of the present invention.

Referring to FIG. 2, the hologram sticker 100 according to the present invention includes at least a base film layer 10, a hologram layer 30, and an adhesive layer 40. The hologram layer 30 basically has a metal thin film layer 34 and a hologram uneven relief layer 32 formed on the back surface of the metal thin film layer 34 and having a pattern inserted therein. At this time, in accordance with the present invention, the pattern inserted into the holographic uneven layer 32 is a holographic latent image (or watermark) as a hidden image. This holographic latent image is not visible to the naked eye but only by the predetermined filter film 200 (see FIG. 4).

In addition, the hologram layer 30 is preferably configured to further include a coloring primer layer 36 for the color effect. Therefore, as shown in FIG. 2, the hologram layer 30 preferably has a lamination structure composed of a coloring primer layer 36, a metal thin film layer 34, and a hologram uneven relief layer 32 in order from the top.

In order to prevent reuse, the hologram sticker 100 according to the present invention may have a self-destructive partial release layer 20 formed therein. The partial release layer 20 may be formed between the hologram layer 30 and the pressure-sensitive adhesive layer 40, but preferably, the hologram layer 30 remains attached to the product even after separation. As shown, it is formed between the base film layer 10 and the hologram layer 30.

Figure 2 shows a preferred embodiment of the anti-falsification hologram sticker according to the present invention, an essential layer (base film layer, pressure-sensitive adhesive layer) constituting the sticker 100, and a couple release layer that can prevent reuse ( 20) and shows a shape made of a holographic layer 30 into which a holographic latent pattern is inserted according to the present invention so as to prevent forgery and alteration. Specifically, the hologram sticker 100 according to the preferred embodiment of the present invention, the substrate film layer 10, the partial release layer 20, the colored primer layer 36, the metal thin film layer 34, and the hologram irregularities in order from the top. The stamping layer 32 and the pressure-sensitive adhesive layer 40 is shown in a stacked structure sequentially. The process of configuring this is as follows.

The base film layer 10 is to protect the sticker 100 from the outside and to serve as a support of the other layers, it is selected from a plastic film. For example, a polyester film having a thickness of 12 to 75 μm may be used.

The partial release layer 20 is formed by applying an organic compound such as cellulose, wax, etc. on the base film layer 10 as described above. At this time, the organic compound forming the partial release layer 20 is applied by using a corrugated uneven roller engraved with a pattern such as letters or figures. The partial release layer 20 may have a thickness of 1.0 μm or less. The partial release layer 20 is separated in the form of a pattern engraved by the uneven roller when the sticker 100 is removed from the product. That is, only a portion of the separation is removed and the remaining portion remains attached to the product. Accordingly, the partial release layer 20 prevents the sticker 100 from being completely removed from the product to prevent reuse.

The colored primer layer 36 is formed by coating a thermosetting lacquer having a color on the partial release layer 20. The inorganic compound is vacuum deposited on the colored primer layer 36 to form the metal thin film layer 34. The inorganic compound constituting the metal thin film layer 34 is selected from aluminum (Al), silver (Ag), zinc sulfide (ZnS), zinc oxide (ZnO), silicon oxide (SiO ₂ ), and the like. The metal thin film layer 34 may have a thickness of 100 to 1000.

The colored primer layer 36 and the metal thin film layer 34 composed of the above-described racker and the inorganic compound improve the glossiness and durability of the sticker 100. And the metal thin film layer 34 provides the surface of the hologram uneven relief layer 32 described below. That is, the holographic uneven engraving layer 32 is formed on the metal thin film layer 34. The holographic latent pattern as a hidden image is recorded in the holographic uneven engraving layer 32 according to the present invention.

The latent image pattern recorded on the hologram uneven angle layer 32 is a character, a figure, an image, etc. which show the uniqueness and discrimination (such as indication of the origin of the product) as a manufacturer, a quality, or a brand of the product to which the sticker 100 is attached. The process of recording the latent image pattern on the holographic uneven engraving layer 32 will be described with reference to FIGS. 3A to 3F.

[Create Latent Pattern]

(1) First, as shown in FIG. 3A, diagonal lines are created with a ratio of white lines to black lines of 1: 2 or more on a computer program capable of working with patterns (characters, figures, images, etc.).

(2) As shown in Fig. 3B, a pattern (character, figure, image, etc.) to be hidden is created separately from the step (1). At this time, the created pattern becomes a latent image pattern. In FIG. 3B, the letter “LG + LIT” is illustrated as a latent pattern.

(3) As shown in Fig. 3C, the character " LG + LIT " created in (2) is cut out in (1) and moved up one pixel.

(4) Separately from the above, as shown in FIG. 3D, the image is processed to have a shape obtained by cutting out portions (1) to (2), and then moved down one pixel.

(5) Moreover, as shown in FIG. 3E, the diagonal line of the opposite direction to (1) is created.

(6) And, as shown in Fig. 3f, the (1), (3), (4) and (5) are combined. At this time, in order to enhance the effect of the latent image, a wave pattern having the same ratio as in (1) may be added.

[Hologram work]

The latent flaw pattern created by the computer program through the processes of (1) to (6) is inserted according to a conventional hologram technique (using laser interfering light) to form the holographic uneven relief layer 32.

[Filter film production]

The image (diagonal) of the above (1) is printed on a transparent film to produce a filter film 200.

The latent image pattern created by the process of (1) to (6) can be identified only by the filter film 200. That is, referring to FIGS. 4A and 4B, the latent image pattern LG + LIT is not visible to the naked eye, but when the predetermined filter film 200 is placed on the sticker 100, the hidden character “LG + LIT” is displayed. see. Figure 4a is a state before placing the filter film 200 on the sticker 100, Figure 4b is a state after placing the filter film 200 on the sticker 100.

As described above, after forming the holographic irregularities relief layer 32 in which the holographic latent pattern is inserted using the inter-pixel interference and the hologram technique, the pressure-sensitive adhesive layer 40 is formed by applying the pressure-sensitive adhesive layer 40 thereon. And it can be cut and used to an appropriate size. The pressure-sensitive adhesive layer 40 may be formed, for example, by applying an acrylic pressure-sensitive adhesive as usual.

Figure 5 shows a cross-sectional configuration of the forgery and tamper proof hologram sticker according to another embodiment of the present invention.

According to another embodiment of the present invention, in addition to the laminated structure as shown in FIG. 2, the outer protective film 50 is overlaminated on the upper portion of the base film layer 10. Here, over laminating means that the substrate film layer 10 is laminated so as to cover the sticker 100 having the laminated structure of FIG. 2. Specifically, the outer protective film 50 has a larger size (ie, larger surface area) than the base film layer 10 as shown in FIG. 5, and the sticker 100 is formed on the surface S of the product. When attached to the side of the sticker 100 to prevent the penetration of oxides such as air or water. That is, the outer protective film 50 prevents the metal thin film layer 34 from being oxidized by blocking the contact between the metal thin film layer 34 and the outside oxide material (air or water, etc.), which in turn causes the durability of the sticker 100. To improve.

As shown in FIG. 5, the external protective film 50 includes an adhesive layer 52 formed by applying an adhesive on the base film layer 10 and a protective film layer attached on the adhesive layer 52. It consists of 54. The pressure-sensitive adhesive layer 52 has an adhesive force, for example, a resin pressure-sensitive adhesive such as acrylic resin may be used, and the protective film layer 54 is selected from a plastic film. Preferably, the protective film layer 54 is made of the same material as the base film layer 10, a fluid (liquid and gas) impermeable transparent or translucent film is used. For example, a transparent polyester film having a thickness of 12-50 μm may be used.

The hologram sticker 100 according to the present invention described above is a variety of products such as license plate, audio tape, video tape, game software, gift certificate, various cards (membership card, ID card, etc.), pharmaceutical products, automobile genuine parts, securities, etc. It is attached to the surface of the product, and in the case of an externally exposed product, it can show more excellent effect.

That is, the sticker 100 of the present invention is inserted into the holographic latent image pattern that can be identified only by the predetermined filter film 200, the authenticity of the product is readable, thereby preventing forgery and alteration.

Figure 6 is a state diagram used in the present invention, showing a state applied to the license plate. As illustrated in FIG. 6, the sticker 100 of the present invention is attached to one side upper end of the vehicle license plate 300 and checks for authenticity and prevents forgery. That is, since the latent image pattern, which was not visible to the naked eye, is seen through the predetermined filter film 200, the authenticity of the product can be confirmed, and the sticker 100 itself cannot be forged. In addition, in case of a product having frequent contact with external air or water, such as the license plate 300, the sticker 100 having the outer protective film 50 protecting the metal thin film layer 34 according to the present invention is formed. 5).

As described above, the hologram sticker 100 according to the present invention is a holographic latent pattern is inserted into the holographic uneven stamping layer 32 to see the pattern (characters, figures, images, etc.) expressed by the naked eye. Can not see, because only the predetermined filter film 200 produced separately in the process of manufacturing the holographic latent image pattern without knowing what the represented pattern is not by the predetermined filter film 200, forgery and forgery prevention effect There is.

In addition, when the external protective film 50 having a larger size is stacked on the base film layer 10, oxidation of the metal thin film layer 34 is prevented, thereby improving durability. When the partial release layer 20 is formed, reuse can be prevented.

1 is a cross-sectional configuration of the anti-forgery-resistant hologram sticker according to the prior art.

Figure 2 is a cross-sectional configuration of the forgery and tamper-proof hologram sticker according to an embodiment of the present invention.

3A to 3F are explanatory diagrams for explaining a process of preparing a holographic latent image pattern according to the present invention.

4A is a plan view of the hologram sticker according to FIG. 2, and FIG. 4B is a plan view showing the filter film on the sticker.

5 is a cross-sectional configuration of the forgery-resistant hologram sticker according to another embodiment of the present invention.

6 is a plan view showing the state applied to the license plate of the present invention.

Explanation of symbols on main parts of drawing

10: base film layer 20: partial release layer

30: hologram layer 32: hologram uneven angle layer

34: metal thin film layer 36: colored primer layer

40: pressure-sensitive adhesive layer 50: outer protective film

52: pressure-sensitive adhesive layer 54: protective film layer

100 hologram sticker 200 filter film

300: license plate

Claims (7)

A hologram layer 30 formed on the base film layer 10, a lower portion of the base film layer 10, and including a metal thin film layer 34 and a hologram uneven relief layer 32, and the hologram layer 30. In the forgery-resistant hologram sticker comprising a pressure-sensitive adhesive layer 40 formed at the bottom of the, The hologram latent anti-tamper hologram sticker, characterized in that the holographic latent pattern 32 is identified by the filter film 200 is inserted. The forgery-resistant hologram sticker according to claim 1, wherein a partial release layer (20) is formed between the base film layer (10) and the hologram layer (30). The holographic layer (30) according to claim 1, further comprising a colored primer layer (36), which is in turn from the top to the colored primer layer (36), the metal thin film layer (34), and the hologram uneven relief layer (32). Anti-counterfeiting hologram sticker, characterized in that configured. According to any one of claims 1 to 3, wherein the pressure-sensitive adhesive layer 52 and the protective film layer 54 on top of the base film layer 10 is larger than the base film layer 10 Anti-counterfeiting hologram sticker, characterized in that the outer protective film 50 having a size laminated. [5] The anti-counterfeiting hologram sticker according to claim 4, wherein the protective film layer 54 and the base film layer 10 are made of the same material. The forgery-resistant hologram sticker according to claim 4, wherein the protective film layer 54 is a transparent polyester film having a thickness of 12 to 50 µm. The forgery-resistant hologram sticker according to claim 4, wherein the hologram sticker is applied to a vehicle license plate (300).