KR20200058148A - The security product for anti-counterfeit - Google Patents

Abstract

The present invention is to provide a security product for preventing forgery and alteration, which can provide a security effect by a flip-flop effect by being connected to a lenticular lens. In the present invention, provided are the security product for preventing forgery and alteration which comprises a core layer, at least one metal layer formed on one or both surfaces of the core layer, and a lenticular lens positioned on the metal layer; and a method for manufacturing the security product. A portion of at least one of the metal layers is removed to form a security element. Therefore, since the color or shape is different depending on the angle at which the security element is observed, a higher level of a security effect can be provided. In addition, an ordinary person can also easily check forgery and alteration.

Description

The security product for anti-counterfeit}

The present invention relates to a security product for preventing forgery, and more specifically, a lenticular lens is arranged on a part of a thermoplastic material composed of a multi-layer, and two or more metal layers are formed therein, and at least one of the metal layers is a specific shape. It relates to a security product for preventing forgery that can provide a security or anti-counterfeiting effect by a flip-flop effect by forming a security element of and linked with a lenticular lens.

With the development of scanning and copying technologies, it is easy to tamper with various security products, and as these technologies have become more and more efficient in recent years, there is a risk of forgery and alteration of products requiring security, such as securities, banknotes, gift certificates, checks, cards, identification cards, and passports. It is increasing.

Accordingly, new and improved security elements for such security products are continually being developed, such as silver coins (Watermark), sparse silver coins (SPAS, Special Press & Soldering Watermark), silver bars (Watermark Bar), silver wire (Security Thread), Security Fiber, Confetti, Planchette, Hologram, Transparent Window, Micro Lettering, etc.

In addition to this, various technologies are used to apply security elements to security products. For example, letters, numbers, patterns, patterns, etc. are printed using special inks, such as light-variable inks, whose color varies depending on the viewing angle. There is a technology to form a pattern having a color that can be identified only under special conditions such as UV light irradiation, and these technologies are widely applied in various fields because they are not easy to copy or forge.

Among the above-mentioned security elements, the transparent window technology is a technology that removes some areas of the opaque substrate and inserts and combines transparent materials therein to form a transparent window. It can reduce the risk of duplication of security products with windows.

This transparent window technology has recently been applied to Australian and Canadian banknotes to improve the security of banknotes, and in order to make it more difficult to forge and falsify security products with transparent windows, the development of a technology that applies security elements to transparent windows is steadily progressing. have. The present invention relates to a security element that can be applied to such a transparent window.

Registration Patent No. 10-1490396 (2015.01.30 registration)

In the present invention, a lenticular lens is arranged on a portion of an upper surface, a lower surface, or both surfaces of a thermoplastic material composed of multiple layers, two or more metal layers are formed in the thermoplastic material, and at least one metal layer forms a security element of a specific shape, thereby making the lenticular lens It is intended to provide a security product for preventing forgery and alteration that can provide a security effect by a flip-flop effect by being linked with.

One embodiment of the present invention for achieving the above object relates to a security product for preventing forgery, more specifically, a core layer; At least one metal layer formed on one or both surfaces of the core layer; And a lenticular lens positioned on the metal layer, and relates to a security product for preventing forgery, in which a part of at least one metal layer of the metal layer is removed to form a security element.

The metal layer may be formed of at least two or more layers on one surface of the core layer, and the security element may be formed on the metal layer farthest from the core layer.

The metal layer is formed as one layer on each side of the core layer, and each metal layer may form different security elements.

A first metal layer is formed on one surface of the core layer, a second metal layer is formed on the other surface, and a removal region of the first metal layer and a removal region of the second metal layer are removed so as not to overlap each other to form a security element. Can be.

The core layer and the lenticular lens may be formed of a thermoplastic material.

The security element may be formed through masking or laser ablation.

Another embodiment of the present invention relates to a method of manufacturing a security product for preventing forgery, and more specifically, a metal layer forming step of sequentially forming a first metal layer and a second metal layer on one surface of the core layer; Forming a security element to remove a portion of the second metal layer; And a thermal compression step of stacking sheet layers on the other surface of the core layer and the second metal layer on which the security element is formed, and simultaneously combining the layers and forming a lenticular lens.

At this time, the thermocompression step may be a step of positioning the mirror plate on which the lenticular lens cell is formed on the sheet layer located on the second metal layer, and then placing the metal plate on the opposite side, followed by thermocompression bonding.

Another embodiment of the present invention relates to a method of manufacturing a security product for preventing forgery, a metal layer forming step of sequentially forming a first metal layer and a second metal layer on one surface of the core layer; A thermal compression step of stacking sheet layers on the other surface of the core layer and the second metal layer, and simultaneously combining the layers and forming a lenticular lens; And removing some regions of the second metal layer.

At this time, the thermocompression step may be a step of positioning the mirror plate on which the lenticular lens cell is formed on the sheet layer located on the second metal layer, and then placing the metal plate on the opposite side, followed by thermocompression bonding.

Another embodiment of the present invention relates to a method of manufacturing a security product for preventing forgery, forming a metal layer on one surface of the core layer and forming a second metal layer on the other surface; Forming a security element to remove a portion of the first metal layer and the second metal layer by using; And a heat compression step of stacking sheet layers on the first metal layer and the second metal layer on which the security element is formed, and simultaneously combining the layers and forming the lenticular lens.

In this case, the thermocompression step may be a step of thermocompressing after positioning a mirror plate on which a lenticular lens cell is formed on each sheet layer.

Another embodiment of the present invention relates to a method of manufacturing a security product for preventing forgery, forming a metal layer on one surface of the core layer and forming a second metal layer on the other surface; A thermal compression step of stacking sheet layers on the first metal layer and the second metal layer, and simultaneously combining the layers and forming a lenticular lens; And a security element forming step of removing some regions of the first metal layer and the second metal layer.

In this case, the thermocompression step may be a step of thermocompressing after positioning a mirror plate on which a lenticular lens cell is formed on each sheet layer.

On the other hand, in each embodiment of the method for manufacturing the forgery prevention security product, the core layer, the sheet layer and the lenticular lens may be formed of a thermoplastic material, and the security element is formed through a masking method or a laser ablation method. Can be.

The security product for preventing forgery and alteration of the present invention has a higher level of security because the shape of the security element formed on the metal layer is different depending on the viewing angle through the lenticular lens, and when the two metal layers have different colors, a color conversion effect also appears. It can be provided, and even the general public has the advantage of being able to easily check for forgery or alteration.

In addition, since the security element of the metal layer is formed inside the security product, the deformation of the security element by the external environment is blocked, and the forgery and forgery is difficult because the lenticular lens is applied.

1 is a cross-sectional view schematically showing a cross-section of a security product for preventing forgery and alteration according to an embodiment of the present invention.
2 is a view showing characteristics of a lenticular lens.
3 is a cross-sectional view schematically showing a cross-section of a security product for preventing forgery and alteration according to another embodiment of the present invention.
4 to 6 are views showing an embodiment of a manufacturing method for manufacturing a security product for preventing forgery and alteration.
7 to 9 are views showing another embodiment of a manufacturing method for manufacturing a security product for preventing forgery and alteration.
10 is a view showing observation results according to a viewer's viewing angle of a security element obtained through Example 1. FIG.
11 is a view showing observation results according to a viewer's viewing angle of a security element obtained through the second embodiment.

Before describing in detail through the preferred embodiments of the present invention, terms or words used in the present specification and claims should not be interpreted as being limited to the conventional or dictionary meanings, meanings consistent with the technical spirit of the present invention. And should be interpreted as concepts.

Throughout this specification, when a member is said to be positioned “on” another member, this includes not only the case where one member abuts another member, but also the case where another member exists between the two members.

Throughout this specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.

Terms such as "first" and "second" are for distinguishing one component from other components, and the scope of rights should not be limited by these terms. For example, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

First, FIG. 1 is a cross-sectional view schematically showing a cross-section of a security product 100 for preventing forgery and alteration according to an embodiment of the present invention.

Referring to FIG. 1, a security product 100 for preventing forgery and alteration according to an embodiment of the present invention includes: a core layer 110; At least one metal layer 120 or 130 formed on one or both surfaces of the core layer 110; And a lenticular lens 160 positioned on the metal layers 120 and 130, and a portion of at least one metal layer of the metal layers 120 and 130 is removed to form a security element.

The security product 100 for preventing forgery and alteration includes a core layer 110 and a lenticular lens 160, and further comprises at least one or more sheet layers 140 and 150 to be multi-layered, and the lenticular The lens 160 is formed on the outermost layer located on the outermost side after the multilayers are laminated.

The core layer 110, the sheet layers 140, 150, and the lenticular lens 160 may be manufactured using a thermoplastic material.

The thermoplastic material applicable to this, for example, polyethylene (polyethylene), polycarbonate (polycarbonate), polyethylene terephthalate (polyethylene terephthalate), polyvinyl chloride (polyvinyl chloride), or a synthetic film (alloy) thereof, etc. , Without being limited thereto, it is particularly preferable to use polycarbonate, which is excellent in durability, excellent in transparency, and recyclable.

According to the above, at least one or more metal layers 120 and 130 are positioned between the core layer 110 and the lenticular lens 160, and the core layer 110 and the lenticular lens 160 are made of a transparent material. When the observer looks at the lenticular lens 160, a part of the metal layers 120 and 130 may be removed to visually confirm the security element formed.

The lenticular lens 160 is a special lens capable of observing different sets of security elements according to a viewing angle of an observer looking at the lenticular lens 160.

FIG. 2 is a view showing these characteristics of the lenticular lens 160. Referring to FIG. 2, A and B of the security elements located under the lenticular lens 160 represent different security elements. For example, when A represents the letter 'A' and B represents the letter 'B', only the letter 'A' is visible at the observer A's point of view due to the refraction of the lenticular lens 160, and at the observer B's point of view Only 'B' is visible.

In the case of the present invention, as well as the shape (text, image, pattern, etc.) of the security elements represented by the metal layers 120 and 130 by the lenticular lens 160, the brightness, color, and saturation of the security elements are different from each other. Therefore, it is possible to provide an enhanced security effect.

Referring back to FIG. 1, the core layer 110 is a sheet-like material in which metal layers 120 and 130 are formed on one or both surfaces, and may be formed by stacking at least one sheet, and a thermoplastic material as described above. It may be obtained from.

The sheet layers 140 and 150 include a first sheet layer 140 and a second sheet layer 150, and each sheet layer may be formed by stacking at least one or more sheets.

The metal layers 120 and 130 may be formed of two or more layers on one surface of the core layer 110, or may be formed of one or more layers on both sides of the core layer 110, and the former is an embodiment of the present invention. , The latter will be defined and described as another embodiment of the present invention.

According to an embodiment of the present invention, the metal layers 120 and 130 are formed of at least two or more layers on one surface of the core layer 110, and the metal layers 120 and 130 are each formed to a thickness of 1 to 50 nm, The security element may be formed on the metal layer farthest from the core layer 110.

Referring to FIG. 1, since two metal layers 120 and 130 are formed, the first metal layer 120 and the second metal layer 130 may be defined in an order close to the core layer 110, and the security element is a core It may be formed on the second metal layer 130 farthest from the layer 110.

The first metal layer 120 and the second metal layer 130 are preferably formed of different metals, and the metals used at this time are bismuth (Bi), tellurium (Te), indium (In), and copper (Cu). ), Aluminum (Al), platinum (Pt), gold (Au), silver (Ag), germanium (Ge), silicon (Si), gallium (Ga), iron (Fe), nickel (Ni), zinc (Zn) ), Tin (Sn) or alloys thereof.

In particular, it is more preferable to use two metals having distinct color differences. The more distinct the color difference between the two metal layers 120 and 130, the flip-flop effect that appears in connection with the lenticular lens 160. ) Because it appears more clearly.

The flip-flop effect is a phenomenon in which brightness, color, and saturation change depending on the viewing angle of an illumination and an observer. As the color difference between the two metal layers 120 and 130 becomes more distinct, the two metal layers 120 and 130 Since the brightness, color, and saturation appear more differently, the identification power of the security element represented by each metal layer can be further improved.

As two metals having such distinct color differences, for example, aluminum (Al) showing silver color and copper (Cu) showing red color may be used.

The metal layers 120 and 130 may be formed by metal ink printing, vapor deposition, or hot stamping using a metal thin film, and each metal layer 120 or 130 may be formed in the same manner as each other, or may be formed through different methods. It is also possible.

As described above, in this embodiment, the security element may be formed on the second metal layer 130, and the security element may be formed by a masking method or a laser ablation method, and a specific security element formation method Will be explained later.

The security element may be one or more of letters, numbers, images, patterns, and patterns, but is not limited thereto, and may be, for example, a name, date of birth, portrait, and flag.

In addition, as described above with reference to FIG. 2, the security element viewed by the observer A and the security element viewed by the observer B may be different due to the lenticular lens 160, and the lenticular lens 160 has two metal layers. When it is linked with (120, 130), the color, brightness, and saturation of each metal layer 120 and 130 appear differently, thereby providing a higher security effect.

The lenticular lens 160 is positioned on the second metal layer 130 on which the security element is formed, and is formed on the top layer of the multi-layered first sheet layer 140 disposed on the second metal layer 130.

The lenticular lens 160 is a lenticular lens cell in a process of arranging the core layer 110, the metal layers 120, 130, and the sheet layers 140, 150 in a manufacturing process, and then thermocompressing them to form a single card shape. It is formed by thermal compression using the formed mirror plate.

Therefore, in addition to combining the layers and forming the lenticular lens 160 at the same time in one process, a separate process for aligning the lenticular lens 160 to the required position is not required, so that a quick and accurate operation is possible.

Throughout this specification, the mirror plate refers to a metal plate on which a lenticular lens cell capable of forming a lenticular lens is formed, and the metal plate refers to a flat metal plate on which no irregularities are formed on the surface. Accordingly, a lenticular lens is formed in a portion that is thermally compressed in contact with the mirror plate, and no lens is formed in a portion that is thermally compressed in contact with the metal plate, and a flat surface can be formed.

Meanwhile, FIG. 3 is a simplified cross-sectional view of a security product 100 ′ for preventing forgery and alteration according to another embodiment of the present invention. According to another embodiment of the present invention, a first metal layer is provided on one surface of the core layer 110. 120 is formed, and the second metal layer 130 is formed on the other surface.

The security element may be formed on both the first metal layer 120 and the second metal layer 130, and the security elements formed on each metal layer 120 or 130 may have different shapes.

The security element may be formed by removing a portion of each metal layer 120 or 130 by a masking method or a laser ablation method, as in one embodiment of the present invention. These core layers 110 and sheet layers ( 140, 150), the removal region 121 of the first metal layer 120 and the removal region 131 of the second metal layer 130 removed from each other to form a security element together It is preferably formed so as not to overlap.

This is, when the core layer 110 is made of a transparent thermoplastic material, when the removal region 121 of the first metal layer 120 and the removal region 131 of the second metal layer 130 overlap, the lenticular lens 160 is This is because a security element having a different shape from the intended security element can be observed when observing the security element.

More specifically, when the security element is observed through the lenticular lens 160 located close to the first metal layer 120, the first metal layer 120 and the removal region 121 of the first metal layer 120 are visible. The security element formed by the second metal layer 130 is observed, and when viewed from the opposite side, the first metal layer 120 seen through the second metal layer 130 and the removal region 131 of the second metal layer is observed.

On the other hand, when each of the removal regions 121 and 131 are overlapped, a transparent region in which no metal layer is visible among the first metal layer 120 and the second metal layer 130 is observed when observed through the lenticular lens 160. Therefore, since the security effect is reduced, the removal region 121 of the removed first metal layer 120 and the removal region 131 of the second metal layer 130 are preferably formed not to overlap each other.

Materials used to form the core layer 110, the metal layers 120, 130, the sheet layers 140, 150 and the lenticular lens 160 used in this embodiment, and the properties exhibited by their connection, refer to FIG. Since it is the same as one embodiment of the present invention described, duplicate description is omitted.

On the other hand, another embodiment of the present invention relates to a method of manufacturing a security product for preventing forgery and alteration, and this manufacturing method can be divided into two methods, and the core layer 110, the first used to explain the manufacturing method afterwards. Since the metal layer 120, the second metal layer 130, and the like are the same as those used in the security product for preventing forgery and alteration described with reference to FIGS. 1 to 3, duplicate description will be omitted.

First, FIGS. 4 to 6 are views showing an embodiment of a manufacturing method for manufacturing a security product for preventing forgery and alteration.

A method of manufacturing a security product for preventing forgery and alteration according to an embodiment includes a metal layer forming step (S1) of sequentially forming a first metal layer 120 and a second metal layer 130 on one surface of the core layer 110; A security element forming step (S2) of removing a portion of the second metal layer 130; And a thermal compression step (S3) in which sheet layers 140 and 150 are stacked on the other surface of the core layer 110 and the second metal layer 130, respectively, and the combination of the layers and the formation of a lenticular lens are performed simultaneously. do.

At this time, the thermocompression step is a step of placing a mirror plate on which a lenticular lens cell is formed on a sheet layer located on a second metal layer, and then placing a metal plate on the opposite side and then thermocompressing, wherein the mirror plate is a lenticular lens 160 Simultaneously acts as a mirror plate forming) and a metal plate used for thermocompression bonding.

At this time, each step may be performed sequentially, or the security element forming step and the thermal compression step may be performed in the reverse order.

Such an order may be determined according to a process used in the step of forming the secure element. When using a masking method for forming the secure element, the metal layer forming step (S1), the secure element forming step (S2), and the thermal compression step ( S3).

In addition, when using the laser ablation method, it is performed in the order of the metal layer forming step (S1 '), the thermal compression step (S3') and the security element forming step.

4 is a view schematically showing a method of forming a security element on the second metal layer 130 by a masking method, wherein a metal layer forming step (S1) and a security element forming step (S2) are illustrated. Referring to FIG. 4, a security element using a masking method can be obtained through the following steps.

First, the core layer 110 is prepared, and after forming the first metal layer 120 on one surface of the core layer, letters, numbers, images, patterns, patterns using the masking material 170 on the first metal layer 120 After printing a security element such as, the second metal layer 130 is formed thereon.

The masking material 170 used at this time may be a water-soluble ink, and, for example, a water-soluble acrylic ink may be used as the water-soluble ink, but is not limited thereto.

Then, when the water-soluble masking material 170 is removed by washing with water, a part of the second metal layer 130 located on the masking material 170 is also removed, so that the second metal layer 130 is a specific security element. It is represented in the form of embossed or engraved.

In addition, the first metal layer 120 located under the second metal layer 130 is exposed through the removal region 131 which is a part of the second metal layer 130 removed together with the masking material 170, so that the second metal layer It may indicate a different security element and / or color from 130.

FIG. 5 is a view simply showing a thermocompression step (S3) of thermally compressing a laminate having a security element using a masking method. Referring to FIG. 5, the thermocompression step (S3) is performed on both sides of the laminate. The sheet layers 140 and 150 are stacked and thermocompressed to combine the layers.

At this time, a mirror plate on which the lenticular lens cell capable of forming the lenticular lens 160 is formed on the first sheet layer 140 by thermal compression, and a metal plate is disposed under the second sheet layer 150 on the opposite side. After placing the heat-pressing, the lenticular lens 160 may be formed on the second metal layer 130 on which the security element is formed.

As such, the steps of manufacturing each sheet by combining the layers and the step of forming the lenticular lens 160 are simultaneously performed, so that the process steps can be shortened.

6 is a view schematically showing a method of forming a security element on the second metal layer 130 by a laser ablation method, and the sheet layers 140 and 150 and the lenticular lens 160 are omitted.

In the case of forming the security element using the laser ablation method, the metal layer is formed in the order of the forming step (S1 '), the thermal compression step (S3') and the forming of the security element (S2 ').

Since the lenticular lens is already formed before the step of forming the security element (S2 '), when the laser is irradiated, it is irradiated in consideration of the diffraction angle due to the curvature of the lenticular lens, so that only the second metal layer 130 is irradiated with the security element. It can be formed, and various lasers can be used to form the security element, but it is particularly preferable to use a picosecond laser.

Meanwhile, FIGS. 7 to 9 are views showing another embodiment of a manufacturing method of manufacturing a security product for preventing forgery and alteration.

In this embodiment, metal layers 120 and 130 are formed on both surfaces of the core layer 110, respectively. Specifically, the first metal layer 120 is formed on one surface of the core layer 110, and the second metal layer ( A metal layer forming step (S1 ") of forming 130) a security element forming step (S2") of removing some regions of the first metal layer 120 and the second metal layer 130; And a thermal compression step (S3 ") in which sheet layers 140 and 150 are respectively stacked on the first metal layer 120 and the second metal layer 130, and the combination of the layers and the formation of a lenticular lens are performed simultaneously. do.

At this time, the thermocompression step (S3 ") is a step of placing a mirror plate on which the lenticular lens cells are formed on each sheet layer 140 and 150 and then thermocompressing the mirror plate, wherein the mirror plate forms the lenticular lens 160. It does not need a separate metal plate for thermocompression because it simultaneously performs the role of and the metal plate used for thermocompression.

At this time, each step may be performed sequentially, or the secure element forming step (S2 ") and the thermal compression step (S3") may be performed in the reverse order.

The order may be determined according to a process used in the step of forming the secure element. When using a masking method for forming the secure element, the metal layer forming step (S1 "), the secure element forming step (S2"), and thermal compression It is performed in the order of step (S3 "), in the case of using the laser ablation method, in the order of the metal layer forming step (S1" '), the thermal compression step (S3 "') and the security element forming step (S2" ') Is performed.

7 is a view schematically showing a method of forming a security element in each metal layer 120 and 130 by a masking method. Unlike FIG. 4, metal layers 120 and 130 are formed on both sides of the core layer 110. , It is performed in the same manner as described in Figure 4, except that the security element is formed on both metal layers (120, 130), and further description is omitted.

FIG. 8 shows a mirror plate in which a lenticular lens cell capable of forming a lenticular lens 160 is formed on each of the sheet layers 140 and 150 after stacking the sheet layers 140 and 150 on both surfaces of the laminate thus manufactured. Each sheet layer (140, 150) is combined to form a single sheet by thermal compression after positioning, and at the same time, the lenticular lens (160) is placed on the surface of the sheet layer (140, 150) located in the area where each security element is formed. It is a figure schematically showing formation.

Therefore, the lenticular lens 160 is formed on both sides of the security product 110 'for preventing forgery and alteration manufactured according to the present embodiment.

9 is a view schematically showing a method of forming a security element in the first metal layer 120 and the second metal layer 130 by a laser ablation method. The sheet layers 140 and 150 and the lenticular lens 160 are shown in FIG. It is omitted.

In the manufacturing method according to the present embodiment, the metal layers 120 and 130 are formed on both sides of the core layer 110, and security elements are formed on both metal layers 120 and 130, see FIG. 6. Since it is the same as the laser ablation method described above, a duplicate description is omitted.

In the step of forming the security element in the manufacturing method according to the present embodiment, the removal region 121 of the first metal layer 120 and the removal region 131 of the second metal layer 130 that are removed to form the security element overlap each other. When not formed so that the desired security elements are accurately expressed, and the security effect is improved, it is preferable that the removal regions 121 and 131 of the respective metal layers 120 and 130 do not overlap.

< Example  1>

A copper layer having a thickness of 30 nm was deposited on one surface of the polycarbonate core layer, and after printing the letter 'A' using a water-soluble acrylic ink, an aluminum layer having a thickness of 30 nm was deposited.

Thereafter, the film was washed with water to remove the water-soluble acrylic ink and the aluminum layer deposited thereon to form the letter 'A' as an intaglio security element on the aluminum layer.

Polycarbonate films were laminated on both sides of the film, and a lenticular lens cell was formed on the side where the letter 'A' was visible, followed by heat and pressure to produce a lenticular lens at the same time as a single card. At this time, the manufactured card-type security product has a layered structure as shown in FIG. 6.

FIG. 10 is a view showing observation results according to a viewer's viewing angle of a security element obtained through Example 1, and when viewed from the front, the letter 'A is a region where a red copper layer is exposed with a silver aluminum layer as a background. 'Appears. However, when viewed from the side, on the contrary, it is possible to confirm the letter 'A' indicated by the red copper layer as the background and the silver aluminum layer.

< Example  2>

Using the water-soluble acrylic ink of the polycarbonate core layer, the letter 'A' is printed on the front, the letter 'B' is printed on the back, and an aluminum layer is deposited on the front and a copper layer is deposited to a thickness of 30 nm, respectively. The water-soluble acrylic ink and each metal layer deposited on the water-soluble acrylic ink were removed by washing with water.

Subsequently, after laminating polycarbonate films on both sides of the film, a mirror plate having a lenticular lens cell on both sides was placed and thermocompressed to produce one card-type security product having a lenticular lens. At this time, the manufactured card-type security product has a layered structure as shown in FIG. 8.

11 is a view showing observation results according to a viewer's viewing angle of a security element obtained through the second embodiment.

First, if the front side on which the letter 'A' is formed is observed from the front, the shape of the letter 'A' from which the aluminum layer has been removed appears as the color of the copper layer visible through the core layer, and the background appears as the silver color of the aluminum layer, When viewed from the side, their colors are reversed so that the background is red in the copper layer and the letters are silver in the aluminum layer.

Conversely, when the back side on which the letter 'B' is formed is observed from the front, a red background and silver letters appear, and when viewed from the side, a silver background and red letters are observed.

The present invention is not limited to the specific embodiments and descriptions described above, and various modifications can be carried out by anyone having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. And such modifications are within the protection scope of the present invention.

100, 100 ': Security product for preventing forgery and alteration 110: Core layer
120: first metal layer 130: second metal layer
140: first sheet layer 150: second sheet layer
160: lenticular lens 170: masking material

Claims (13)

Core layer;
At least one metal layer formed on one or both surfaces of the core layer; And
It includes; a lenticular lens located on the metal layer;
A security product for preventing forgery and alteration, characterized in that a part of at least one metal layer of the metal layer is removed to form a security element. According to claim 1,
The metal layer is formed of at least two layers on one surface of the core layer,
The security element is characterized in that formed on the metal layer farthest from the core layer, a security product for preventing forgery. According to claim 1,
The metal layer is formed as one layer on each side of the core layer,
Each metal layer is characterized by forming a different security element, security products for preventing forgery. According to claim 3,
A first metal layer is formed on one surface of the core layer, and a second metal layer is formed on the other surface,
A security product for preventing forgery and alteration, characterized in that the removal area of the first metal layer and the removal area of the second metal layer are removed so as not to overlap each other to form a security element. According to claim 1,
The core layer and the lenticular lens, characterized in that formed of a thermoplastic material, forgery prevention security products. According to claim 1,
The security element, characterized in that formed through masking or laser ablation, a security product for preventing forgery. A metal layer forming step of sequentially forming a first metal layer and a second metal layer on one surface of the core layer;
Forming a security element to remove a portion of the second metal layer; And
It includes; a thermal compression step of laminating a sheet layer on the second metal layer on which the other surface of the core layer and the security element are formed, and simultaneously combining the layers and forming a lenticular lens;
The thermocompression step is a step of placing a mirror plate on which a lenticular lens cell is formed on a sheet layer positioned on a second metal layer, and placing the metal plate on the opposite side, followed by thermocompression to manufacture a security product for preventing forgery and alteration. Way. A metal layer forming step of sequentially forming a first metal layer and a second metal layer on one surface of the core layer;
A thermal compression step of stacking sheet layers on the other surface of the core layer and the second metal layer, and simultaneously combining the layers and forming a lenticular lens; And
It includes; removing a portion of the second metal layer; includes,
The thermocompression step is a step of placing a mirror plate on which a lenticular lens cell is formed on a sheet layer positioned on a second metal layer, and placing the metal plate on the opposite side, followed by thermocompression to manufacture a security product for preventing forgery and alteration. Way. A metal layer forming step of forming a first metal layer on one surface of the core layer and a second metal layer on the other surface;
Forming a security element to remove a portion of the first metal layer and the second metal layer by using; And
It includes; a thermal compression step of laminating a sheet layer on the first metal layer and the second metal layer on which the security element is formed, and simultaneously combining the layers and forming the lenticular lens;
The heat-pressing step is a method of manufacturing a security product for preventing forgery and alteration, characterized in that it is a step of heat-pressing after placing a mirror plate on which a lenticular lens cell is formed on each sheet layer. A metal layer forming step of forming a first metal layer on one surface of the core layer and a second metal layer on the other surface;
A thermal compression step of stacking sheet layers on the first metal layer and the second metal layer, and simultaneously combining the layers and forming a lenticular lens; And
Includes; forming a security element to remove a portion of the first metal layer and the second metal layer;
The heat-pressing step is a method of manufacturing a security product for preventing forgery and alteration, characterized in that it is a step of heat-pressing after placing a mirror plate on which a lenticular lens cell is formed on each sheet layer. The method according to any one of claims 7 to 10,
The core layer, the sheet layer and the lenticular lens, characterized in that formed of a thermoplastic material, a method for manufacturing a security product for preventing forgery. The method of claim 7 or 9,
The security element, characterized in that formed by using a masking method, a method for manufacturing a security product for preventing forgery. The method of claim 8 or 10,
The security element, characterized in that formed using a laser ablation method, a method for manufacturing a security product for preventing forgery.

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