KR102456159B1 - The security product for anti-counterfeit - Google Patents

Abstract

In the present invention, the core layer; at least one or more metal layers formed on one or both surfaces of the core layer; and a lenticular lens positioned on the metal layer, wherein a partial region of at least one metal layer of the metal layer is removed to form a security element. Since the color or shape looks different depending on the angle at which the element is observed, it can provide a higher level of security effect, and even the general public can easily check whether it is forged or tampered with with the naked eye.

Description

The security product for anti-counterfeit

The present invention relates to a security product for preventing forgery, and more particularly, a lenticular lens is arranged in a part of a thermoplastic material composed of a multi-layer, and two or more types of metal layers are formed therein. It relates to a security product for preventing forgery that can provide security or forgery prevention effect by flip-flop effect by forming a security element of the lenticular lens and connecting it.

With the development of scanning and copying technology, counterfeiting of various security products becomes easier, and as these technologies become more high-performance in recent years, the risk of forgery of products requiring security such as securities, banknotes, gift certificates, checks, cards, ID cards, and passports increases. It is increasing.

Accordingly, new and improved security elements for such security products are constantly being developed. These security elements include silver (Watermark), sparse silver (SPAS, Special Press & Soldering Watermark), silver bar (Watermark Bar), and silver wire. There are (Security Thread), Security Fiber, Confetti, Planchette, Hologram, Transparent Window, and Micro Lettering.

In addition to this, various technologies are used to apply security elements to security products. For example, letters, numbers, patterns, and patterns are printed using special inks such as optical variable ink that changes the color of the print depending on the viewing angle. There is a technology for forming 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 actual radiation or forgery is not easy.

Among the above-described security elements, the transparent window technology is a technology for forming a transparent window by removing a partial region of an opaque substrate and inserting and bonding a transparent material thereto. It can reduce the risk of duplication of security products with windows applied.

Such transparent window technology has recently been applied to Australian and Canadian banknotes to improve the security of banknotes. have. The present invention relates to a security element applicable to such a transparent window.

Registered Patent No. 10-1490396 (Registered on January 30, 2015)

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

One embodiment of the present invention for achieving the object as described above relates to a security product for preventing forgery, more specifically, a core layer; at least one or more metal layers formed on one or both surfaces of the core layer; and a lenticular lens positioned on the metal layer, wherein a partial region of at least one metal layer of the metal layer is removed to form a security element.

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

The metal layer is formed as one layer on both sides of the core layer, and each metal layer may form a different security element.

A first metal layer is formed on one surface of the core layer, and a second metal layer is formed on the other surface, and the removal region of the first metal layer and the removal region of the second metal layer, which are removed to form the security element, are formed so as not to overlap each other. 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 particularly, 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 by removing a portion of the second metal layer; and a thermocompression bonding step of laminating each sheet layer on the other surface of the core layer and the second metal layer on which the security element is formed, and simultaneously bonding the layers and forming the lenticular lens.

In this case, the thermocompression bonding step may be a step of positioning a mirror plate having a lenticular lens cell formed thereon on a sheet layer positioned on the second metal layer, positioning the metal plate on the opposite side, and then thermocompression bonding.

Another embodiment of the present invention relates to a method of manufacturing a security product for preventing forgery, comprising: a metal layer forming step of sequentially forming a first metal layer and a second metal layer on one surface of a core layer; a thermocompression bonding step of laminating a sheet layer on the other surface of the core layer and a second metal layer, respectively, and simultaneously bonding the layers and forming a lenticular lens; and removing a partial region of the second metal layer.

In this case, the thermocompression bonding step may be a step of positioning a mirror plate having a lenticular lens cell formed thereon on a sheet layer positioned on the second metal layer, positioning the metal plate on the opposite side, and then thermocompression bonding.

Another embodiment of the present invention relates to a method for manufacturing a security product for preventing forgery and tampering, comprising: forming a first metal layer on one surface of a core layer and forming a second metal layer on the other surface of the core layer; forming a security element to remove a portion of the first metal layer and the second metal layer using; and a thermocompression bonding step of laminating a sheet layer on each of the first metal layer and the second metal layer on which the security element is formed, and simultaneously bonding the layers and forming the lenticular lens.

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

Another embodiment of the present invention relates to a method for manufacturing a security product for preventing forgery and tampering, comprising: forming a first metal layer on one surface of a core layer and forming a second metal layer on the other surface of the core layer; a thermocompression bonding step of laminating a sheet layer on the first metal layer and the second metal layer, respectively, and simultaneously performing bonding of the respective layers and forming a lenticular lens; and forming a security element by removing a portion of the first metal layer and the second metal layer.

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

On the other hand, in each embodiment related to the method of manufacturing the anti-counterfeiting 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

In the security product for preventing forgery of the present invention, the shape of the security element formed on the metal layer looks different depending on the angle viewed through the lenticular lens. It can be provided, and there is an advantage that the general public can easily check whether there is a forgery or not with the naked eye.

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 since the lenticular lens is applied, it has the effect of making forgery difficult.

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

Hereinafter, prior to being described in detail through preferred embodiments of the present invention, terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and meanings consistent with the technical spirit of the present invention. and should be interpreted as a concept.

Throughout this specification, when a member is said to be located "on" another member, this includes not only a case in which a member is in contact with another member but also a case in which another member exists between the two members.

Throughout this specification, when a part "includes" a component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

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

Referring to FIG. 1 , a security product 100 for preventing forgery and tampering according to an embodiment of the present invention includes a core layer 110 ; at least one or more metal layers 120 and 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, wherein a partial region of at least one of the metal layers 120 and 130 is removed to form a security element.

The anti-counterfeiting security product 100 includes a core layer 110 and a lenticular lens 160, and further includes at least one sheet layer 140, 150 in addition to this. The lens 160 is formed in the outermost layer positioned on the outermost side after the multi-layers 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 here may be, for example, polyethylene, polycarbonate, polyethylene terephthalate, polyvinyl chloride, or a synthetic film thereof (alloy), etc. , but is not limited thereto, it is particularly durable and excellent in transparency, and it is preferable to use a recyclable polycarbonate (polycarbonate).

As described above, at least one or more metal layers 120 and 130 are positioned between the core layer 110 and the lenticular lens 160, and since the core layer 110 and the lenticular lens 160 are made of a transparent material, When the observer looks at the lenticular lens 160 , the security element formed by removing some regions of the metal layers 120 and 130 can be visually confirmed.

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, among the security elements located under the lenticular lens 160, A and B indicate different security elements. For example, when A represents the letter 'A' and B represents the letter 'B', only the letter 'A' is visible from the viewpoint of the observer A due to the refraction of the lenticular lens 160, and the letter 'A' from the viewpoint of the observer B Only 'B' is visible.

In the case of the present invention, not only the shape (character, image, pattern, etc.) of the security element represented by each metal layer 120, 130 by the lenticular lens 160, but also the brightness, color, and saturation represented by the security element are different from each other. Therefore, a further enhanced security effect can be provided.

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 sides, and may be formed by stacking at least one sheet, and as described above, a thermoplastic material may be obtained from

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

The metal layers 120 and 130 may be formed in two or more layers on one surface of the core layer 110 or in one or more layers each on both sides of the core layer 110. , 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 in at least two 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 in the metal layer furthest 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 as the first metal layer 120 and the second metal layer 130 in the order close to the core layer 110 , and the security element is the core. It may be formed in the second metal layer 130 furthest from the layer 110 .

Preferably, the first metal layer 120 and the second metal layer 130 are formed of different metals, and the metal used in this case is bismuth (Bi), tellunium (Te), indium (In), 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 may be selected.

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

The flip-flop effect is a phenomenon in which the brightness, color, and saturation appear to change depending on the lighting and the observer's observation angle. Since the brightness, color, and saturation appear more differently, the discrimination power of the security element represented by each metal layer may be further improved.

As the two metals having such a distinct color difference, for example, aluminum (Al) representing silver and copper (Cu) representing red 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 of the metal layers 120 and 130 may be formed by the same method or different methods It is also possible to be

As described above, in this embodiment, the security element may be formed on the second metal layer 130, and such a security element may be formed by a masking method or a laser ablation method, a specific method of forming a security element 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, national flag, and the like.

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 is formed of two metal layers. In connection with (120, 130), since the color, brightness, saturation, etc. represented by each metal layer (120, 130) look different, it is possible to provide 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 uppermost 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 the process of disposing the core layer 110, the metal layers 120, 130, and the sheet layers 140 and 150 in the manufacturing process, and then thermocompressing them to form a single card shape. It is formed by thermocompression bonding using this formed mirror plate.

Therefore, the bonding of each layer and the forming process of the lenticular lens 160 are performed simultaneously in one process, and there is no need for a separate process for aligning the lenticular lens 160 to a required position, so a fast and accurate operation is possible.

Throughout this specification, the mirror plate means a metal plate on which a lenticular lens cell capable of forming a lenticular lens is formed, and the metal plate means a flat metal plate on which any irregularities are not formed on the surface. Accordingly, a lenticular lens is formed on a portion to be thermocompressed in contact with the mirror plate, and no lens is formed on a portion to be thermocompressed while in contact with the metal plate, and a flat surface may be formed.

Meanwhile, FIG. 3 schematically shows a cross-section of a security product 100 ′ for preventing forgery and tampering according to another embodiment of the present invention. According to another embodiment of the present invention, a first metal layer is formed 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 element formed on each metal layer 120 and 130 may have different shapes.

The security element may be formed by removing a portion of each metal layer 120, 130 by a masking method or a laser ablation method, as in an embodiment of the present invention, which are the core layer 110 and the sheet layers ( When formed in a single sheet shape together with 140 and 150 , the removal region 121 of the first metal layer 120 and the removal region 131 of the second metal layer 130 removed to form a security element are mutually 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 formed. This is because, when observing the security element through the

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

On the other hand, when the respective removal regions 121 and 131 are overlapped and formed, when observed through the lenticular lens 160, a transparent region in which neither the first metal layer 120 nor the second metal layer 130 is visible is observed. Therefore, since the security effect is reduced, it is preferable that the removal region 121 of the removed first metal layer 120 and the removal region 131 of the second metal layer 130 do not overlap each other.

Materials for forming the core layer 110 , the metal layers 120 and 130 , the sheet layers 140 , 150 and the lenticular lens 160 used in this embodiment, and the properties shown by their linkage are described with reference to FIG. 1 . Since it is the same as the described embodiment of the present invention, the overlapping description will be omitted.

Meanwhile, another embodiment of the present invention relates to a method of manufacturing a security product for preventing forgery and tampering. This manufacturing method can be divided into two methods, and the core layer 110 used to explain the manufacturing method thereafter, the first The metal layer 120 , the second metal layer 130 , etc. are the same as those used in the forgery prevention security product described above with reference to FIGS. 1 to 3 , and thus overlapping descriptions 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.

A method of manufacturing a security product for preventing tampering 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; forming a security element by removing a portion of the second metal layer 130 (S2); and a thermocompression bonding step (S3) of laminating the sheet layers 140 and 150 on the other surface of the core layer 110 and the second metal layer 130, respectively, and simultaneously bonding the layers and forming the lenticular lens; do.

At this time, the thermocompression bonding step is a step of thermocompression bonding after placing a mirror plate having a lenticular lens cell formed thereon on the sheet layer located on the second metal layer, and placing a metal plate on the opposite side, wherein the mirror plate is the lenticular lens 160 ), plays the role of a mirror plate and a metal plate used for thermocompression bonding at the same time.

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

This order may be determined according to the process used in the security element formation step. When a masking method is used to form the security element, the metal layer formation step (S1), the security element formation step (S2), and the thermocompression bonding step ( S3) is performed in the order of

In addition, when using the laser ablation method, the metal layer forming step (S1'), the thermocompression bonding step (S3') and the security element forming step are performed in order.

4 is a view schematically showing a method of forming a security element on the second metal layer 130 by a masking method, in which the metal layer forming step S1 and the security element forming step S2 are shown. Referring to FIG. 4 , the security element using the masking method may be obtained through the following steps.

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

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

Then, when the water-soluble masking material 170 is removed by washing with water, a portion 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. is shown in the form of embossed or engraved.

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

5 is a schematic diagram illustrating the thermocompression bonding step (S3) of thermocompression bonding the laminate on which the security element is formed using a masking method. Referring to FIG. 5, the thermocompression bonding step (S3) is on both sides of the laminate The sheet layers 140 and 150 are laminated and thermocompression-bonded to bond the respective layers.

At this time, a mirror plate having a lenticular lens cell capable of forming a lenticular lens 160 by thermocompression bonding is disposed on the first sheet layer 140 , and a metal plate is disposed under the opposite side of the second sheet layer 150 . The lenticular lens 160 may be formed on the second metal layer 130 on which the security element is formed by thermocompression bonding after positioning.

In this way, the process steps can be shortened because the steps of manufacturing a single sheet by combining the layers and forming the lenticular lens 160 are performed at the same time.

6 is a view schematically showing a method of forming a security element on the second metal layer 130 by the 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 forming step (S1'), the thermocompression bonding step (S3'), and the security element forming step (S2') are performed in the order.

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

On the other hand, Figure 7 to Figure 9 is a view showing another embodiment of the manufacturing method for manufacturing a forgery prevention security product.

In this embodiment, the metal layers 120 and 130 are formed on both sides 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 ( 130) forming a metal layer forming step (S1"): forming a security element by removing some regions of the first metal layer 120 and the second metal layer 130 (S2"); and a thermocompression bonding step (S3") of laminating the sheet layers 140 and 150 on the first metal layer 120 and the second metal layer 130, respectively, and simultaneously performing the bonding of the respective layers and the formation of the lenticular lens; do.

At this time, the thermocompression bonding step (S3″) is a step of thermocompression bonding after positioning a mirror plate having a lenticular lens cell formed thereon on each sheet layer 140 , 150 , and the mirror plate forming the lenticular lens 160 . A separate metal plate for thermocompression bonding is not required because it simultaneously performs the role of a metal plate used for thermocompression bonding.

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

Such an order may be determined according to a process used in the step of forming the security element. When a masking method is used to form the security element, the metal layer forming step (S1″), the security element forming step (S2″), and thermocompression bonding Performed in the order of step (S3"), when using the laser ablation method, in the order of the metal layer forming step (S1"'), the thermocompression bonding step (S3"') and the security element forming step (S2"') is carried out

7 is a view schematically showing a method of forming a security element on each metal layer 120, 130 by a masking method. Unlike FIG. 4, metal layers 120 and 130 are formed on both sides of the core layer 110, , since it is performed in the same manner as described in FIG. 4 except that the security element is formed on both the metal layers 120 and 130 , an additional description will be omitted.

8 is a mirror plate in which a lenticular lens cell capable of forming a lenticular lens 160 on each sheet layer 140 and 150 after laminating the sheet layers 140 and 150 on both sides of the laminate manufactured as described above. After positioning and thermocompression bonding, each sheet layer 140 , 150 is combined to form a single sheet, and at the same time, a lenticular lens 160 is applied to the surface of the sheet layer 140 , 150 located in the region where each security element is formed. It is a diagram schematically showing the formation.

Accordingly, the lenticular lens 160 is formed on both sides of the forgery prevention security product 110 ′ 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 the laser ablation method, and the sheet layers 140 and 150 and the lenticular lens 160 are It has been omitted and shown.

In the manufacturing method according to this embodiment, see FIG. 6 except that the metal layers 120 and 130 are formed on both sides of the core layer 110 , and a security element is formed on both metal layers 120 and 130 . Since it is the same as the laser ablation method described above, the overlapping description will be omitted.

In the step of forming the security element of 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, which are removed to form the security element, overlap each other. When formed so as not to be formed so that the desired security element is accurately expressed and the security effect is improved, it is preferable that the removal regions 121 and 131 of the 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, the letter 'A' was printed using a water-soluble acrylic ink, and 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', which is an engraved security element, on the aluminum layer.

Polycarbonate films were laminated on both sides of this film, and a mirror plate having a lenticular lens cell formed thereon was placed on the side where the letter 'A' was visible, and then heat and pressure were applied to form a single card while forming a lenticular lens. At this time, the manufactured card-type security product has a layered structure as shown in FIG. 6 .

10 is a view showing the observation results according to the observer's viewing angle of the security element obtained through Example 1, when viewed from the front, the letter 'A', which is the area where the silver aluminum layer is in the background and the red copper layer is exposed; ' appears. However, when viewed from the side, on the contrary, the letter 'A', which is indicated by the red copper layer as the background and the silver aluminum layer, can be identified.

< Example 2>

Using the water-soluble acrylic ink of the polycarbonate core layer, the letter 'A' is printed on the front side and the letter 'B' on the back side, and an aluminum layer is deposited on the front side and a copper layer on the back side 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.

Thereafter, polycarbonate films were laminated on both sides of the film, and a mirror plate having lenticular lens cells formed on both sides was placed and thermocompressed to manufacture a card-type security product having a lenticular lens. In this case, the manufactured card-type security product has a layered structure as shown in FIG. 8 .

11 is a view showing the observation result according to the viewing angle of the observer of the security element obtained through the second embodiment.

First, when the front surface on which the letter 'A' is formed is observed from the front, the shape of the letter 'A' with the aluminum layer removed appears as the color of the copper layer seen 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 appears as the red color of the copper layer and the text appears as the silver color of 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 characters appear, and when viewed from the side, a silver background and red characters are observed.

The present invention is not limited to the specific embodiments and descriptions described above, and without departing from the gist of the present invention claimed in the claims, any person skilled in the art to which the invention pertains can implement various modifications and such modifications shall fall within the protection scope of the present invention.

100, 100': security product for preventing forgery 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)

delete delete core layer;
at least one or more metal layers formed on one or both surfaces of the core layer; and
Including; a lenticular lens positioned on the metal layer;
A portion of at least one of the metal layers is removed to form a security element,
The metal layer is formed in one layer on both sides of the core layer,
Each metal layer forms a different security element,
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 tampering, characterized in that the removal region of the first metal layer and the removal region of the second metal layer, which are removed to form the security element, are formed so as not to overlap each other. delete 4. The method of claim 3,
The core layer and the lenticular lens, characterized in that formed of a thermoplastic material, forgery prevention security product. 4. The method of claim 3,
The security element, characterized in that formed through masking or laser ablation, forgery prevention security product. 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 by removing a portion of the second metal layer; and
Including; a thermocompression bonding step of laminating a sheet layer on the other surface of the core layer and the second metal layer on which the security element is formed, and simultaneously bonding the layers and forming the lenticular lens;
The thermocompression bonding step, characterized in that the step of thermocompression bonding after positioning a mirror plate having a lenticular lens cell formed thereon on the sheet layer located on the second metal layer, and placing the metal plate on the opposite side, manufacturing a security product for preventing tampering 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 thermocompression bonding step of laminating a sheet layer on the other surface of the core layer and a second metal layer, respectively, and simultaneously bonding the layers and forming a lenticular lens; and
forming a security element by removing a portion of the second metal layer;
The thermocompression bonding step, characterized in that the step of thermocompression bonding after positioning a mirror plate having a lenticular lens cell formed thereon on the sheet layer located on the second metal layer, and placing the metal plate on the opposite side, manufacturing a security product for preventing tampering Way. forming a first metal layer on one surface of the core layer and forming a second metal layer on the other surface of the core layer;
forming a security element to remove a portion of the first metal layer and the second metal layer using; and
Including; laminating a sheet layer on each of the first metal layer and the second metal layer on which the security element is formed, and a thermocompression bonding step of simultaneously bonding the layers and forming the lenticular lens;
The thermocompression bonding step is a method of manufacturing a security product for preventing forgery, characterized in that it is a step of thermocompression bonding after positioning a mirror plate having a lenticular lens cell formed on each sheet layer. forming a first metal layer on one surface of the core layer and forming a second metal layer on the other surface of the core layer;
a thermocompression bonding step of laminating a sheet layer on the first metal layer and the second metal layer, respectively, and simultaneously performing bonding of the respective layers and forming a lenticular lens; and
a security element forming step of removing a portion of the first metal layer and the second metal layer;
The thermocompression bonding step is a method of manufacturing a security product for preventing forgery, characterized in that it is a step of thermocompression bonding after positioning a mirror plate having a lenticular lens cell formed on each sheet layer. 11. 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 of manufacturing a security product for preventing forgery. 10. The method according to claim 7 or 9,
The security element, characterized in that it is formed using a masking method, a method of manufacturing a security product for preventing forgery. 11. The method of claim 8 or 10,
The security element is, characterized in that formed using a laser ablation method, a method of manufacturing a security product for preventing forgery.

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