CN116811461A

CN116811461A - Security element and security product

Info

Publication number: CN116811461A
Application number: CN202310665391.8A
Authority: CN
Inventors: 陈韦; 刘萃; 陈庚; 古克; 王斌; 白旸
Original assignee: China Banknote Printing Technology Research Institute Co ltd; China Banknote Printing and Minting Group Co Ltd
Current assignee: China Banknote Printing Technology Research Institute Co ltd; China Banknote Printing and Minting Group Co Ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-09-29

Abstract

The present invention provides a security element and a security product, wherein the security element comprises: at least one infrared reflecting layer having a transmission effect on electromagnetic waves in a first wavelength region and having a reflection effect on electromagnetic waves in a second wavelength region; the magnetic layer is arranged on one side of the infrared reflecting layer, has an absorption characteristic on electromagnetic waves in a third wavelength interval, and at least part of the first wavelength interval is positioned in the third wavelength interval, and has first anti-fake information which is a magnetic signal capable of being detected; the optical variable layer is arranged on the magnetic layer, has dynamic light variable characteristics, and can obtain second anti-counterfeiting information according to the optical variable layer when electromagnetic waves are injected into the anti-counterfeiting element.

Description

Security element and security product

Technical Field

The invention relates to the technical field of anti-counterfeiting products, in particular to an anti-counterfeiting element and an anti-counterfeiting product.

Background

In the related art, the anti-counterfeiting element is provided with magnetic ink so as to achieve the anti-counterfeiting purpose. However, the anti-counterfeiting product has single anti-counterfeiting information and poor anti-counterfeiting performance, and is easy to imitate by similar products.

Disclosure of Invention

In order to solve or improve at least one of the above problems, an object of the present invention is to provide a security element.

It is a further object of the present invention to provide a security product having a security element as described above.

To achieve the above object, a first aspect of the present invention provides a security element comprising: at least one infrared reflecting layer having a transmission effect on electromagnetic waves in a first wavelength region and having a reflection effect on electromagnetic waves in a second wavelength region; the magnetic layer is arranged on one side of the infrared reflecting layer, has an absorption characteristic on electromagnetic waves in a third wavelength interval, and at least part of the first wavelength interval is positioned in the third wavelength interval, and has first anti-fake information which is a magnetic signal capable of being detected; the optical variable layer is arranged on the magnetic layer, has dynamic light variable characteristics, and can obtain second anti-counterfeiting information according to the optical variable layer when electromagnetic waves are injected into the anti-counterfeiting element.

According to the technical scheme of the anti-counterfeiting element, the first anti-counterfeiting information and the second anti-counterfeiting information can be obtained through the anti-counterfeiting element, the problem of single anti-counterfeiting information in the traditional technology is effectively solved, the anti-counterfeiting effect is improved, and the machine-readable anti-counterfeiting performance of magnetic patterns, particularly magnetic dynamic optically variable patterns, can be improved. In addition, the color change effect observed by the electromagnetic wave in the first wavelength interval and the color change effect observed by the electromagnetic wave in the second wavelength interval irradiating the anti-counterfeiting element are not consistent, and the color change effect observed by the electromagnetic wave in the second wavelength interval irradiating the two sides of the anti-counterfeiting element may not be consistent (under the condition that only one side of the anti-counterfeiting element is provided with an infrared reflecting layer), so that the design mode is beneficial to further improving the anti-counterfeiting effect, and is not easy to imitate by similar products.

In particular, the security element comprises an infrared reflective layer, a magnetic layer, and an optically variable layer. The infrared reflecting layer has a transmission effect on electromagnetic waves in a first wavelength range. Alternatively, the infrared reflection layer has a transmittance of not less than 80% for electromagnetic waves in the first wavelength region. The infrared reflecting layer has almost no shielding effect on electromagnetic waves in the first wavelength range. Optionally, the first wavelength interval is 400nm to 700nm. The wavelength range of visible light is 400nm to 700nm, and therefore, the infrared reflection layer has a transmission effect on visible light with little shielding effect.

Further, the infrared reflection layer has a reflection effect on electromagnetic waves in the second wavelength region. Optionally, the infrared reflection layer has a reflectivity of not less than 80% for electromagnetic waves in the second wavelength region. The infrared reflecting layer has a strong shielding effect on electromagnetic waves in the second wavelength range. Optionally, the second wavelength interval is 800nm to 1500nm. The wavelength range of the near infrared band is 700nm to 1500nm. When the infrared light source irradiates the infrared reflecting layer, the infrared reflecting layer has a strong reflecting effect on the near infrared band, namely, the infrared reflecting layer has a strong shielding effect on the near infrared band.

Further, the number of infrared reflecting layers is at least one. The infrared reflecting layer may be one or two. Further, the magnetic layer is arranged on one side of the infrared reflecting layer. If the number of the infrared reflecting layers is one, the magnetic layer can be arranged on any one of two sides of the infrared reflecting layer; if the number of the infrared reflecting layers is two, the magnetic layer is arranged between the two infrared reflecting layers. Alternatively, the magnetic layer is a layered structure formed by printing or coating with an ink containing a magnetic pigment.

Further, the magnetic layer has an absorption characteristic for electromagnetic waves in the third wavelength region. At least a portion of the first wavelength interval is within the third wavelength interval. The infrared reflecting layer has a transmission effect on the electromagnetic wave in the first wavelength range, and the electromagnetic wave in the first wavelength range can be transmitted to the magnetic layer through the infrared reflecting layer. Since at least part of the first wavelength interval is within the third wavelength interval, the magnetic layer has an absorption characteristic for electromagnetic waves at least part of the first wavelength interval and within the third wavelength interval. Optionally, the electromagnetic wave of the first wavelength interval is visible light, and at least part of the wavelength band (wavelength interval) of the visible light is within the third wavelength interval. The magnetic layer has an absorption characteristic for at least a portion of visible light, and is visible to the naked eye under visible light.

Alternatively, the infrared reflecting layer is prepared on a pet (polyethylene terephthalate) film by vapor deposition, where the pet film is removable. The infrared reflecting layer is arranged on the substrate layer of the anti-counterfeiting product in a labeling, hot stamping or copying mode.

Optionally, the magnetic layer has a footprint that is not greater than the footprint of the infrared reflective layer. The region of the infrared reflective layer can completely cover the region of the magnetic layer to ensure that light is first directed toward the infrared reflective layer when a light source (e.g., a visible light source or an infrared light source) irradiates at least one side of the security element.

Further, the magnetic layer has first anti-counterfeiting information. The first security information is a magnetic signal that can be detected. The magnetic signal is a soft magnetic signal or a hard magnetic signal. The specific device can detect the magnetic signal of the magnetic layer and determine the magnetic image through the magnetic signal so as to acquire the first anti-counterfeiting information.

Further, an optically variable layer is provided on the magnetic layer. The optically variable layer has dynamic optically variable features. The optically variable layer has a color change effect when the reflection viewing angle is changed or when the transmission or reflection viewing is performed. The electromagnetic waves are incident on the security element to obtain second security information from the optically variable layer. The second anti-counterfeiting information is a color change effect. The color change effect includes a light change pattern and a hidden state of the light change pattern.

Specifically, when electromagnetic waves in the second wavelength range irradiate one side of the anti-counterfeiting element provided with the infrared reflecting layer, the light change pattern is observed to be in a hidden state, so that a hiding function is realized; when electromagnetic waves in the second wavelength range irradiate the side of the anti-counterfeiting element, which is not provided with the infrared reflection layer, the optically variable pattern can be observed. The optically variable pattern can be observed on either side of the security element when irradiated with electromagnetic waves in the first wavelength region.

Optionally, when the infrared light source irradiates one side of the anti-counterfeiting element provided with the infrared reflection layer, the light change pattern is observed to be in a hidden state, so that an infrared hiding function is realized; when the infrared light source irradiates the side of the anti-counterfeiting element, which is not provided with the infrared reflection layer, the light variation pattern can be observed. Optically variable patterns can be observed on either side of the security element illuminated by a visible light source.

The first anti-counterfeiting information and the second anti-counterfeiting information can be obtained through the anti-counterfeiting element, the problem of single anti-counterfeiting information in the traditional technology is effectively solved, the anti-counterfeiting effect is improved, and the machine-readable anti-counterfeiting performance of magnetic patterns, particularly magnetic dynamic optically variable patterns, can be improved. In addition, the color change effect observed by the electromagnetic wave in the first wavelength interval and the color change effect observed by the electromagnetic wave in the second wavelength interval irradiating the anti-counterfeiting element are not consistent, and the color change effect observed by the electromagnetic wave in the second wavelength interval irradiating the two sides of the anti-counterfeiting element may not be consistent (under the condition that only one side of the anti-counterfeiting element is provided with an infrared reflecting layer), so that the design mode is beneficial to further improving the anti-counterfeiting effect, and is not easy to imitate by similar products.

In addition, the technical scheme provided by the invention can also have the following additional technical characteristics:

in the above technical solution, the magnetic layer and the optically variable layer are integrated, and the magnetic layer and the optically variable layer are combined into the optically variable magnetic layer, and the optically variable magnetic layer has magnetic signal and dynamic optically variable characteristics.

In this embodiment, the optically variable layer and the magnetic layer have the same layer structure, i.e., the optically variable magnetic layer. Alternatively, the optically variable magnetic layer is made of an ink containing a magnetic optically variable pigment by printing or coating under the action of an orienting magnetic field. The optically variable magnetic layer has a magnetic signal. The magnetic signal is a soft magnetic signal or a hard magnetic signal. The specific device can detect the magnetic signal of the magnetic layer and determine the magnetic image through the magnetic signal so as to acquire the first anti-counterfeiting information.

Further, the optically variable magnetic layer has dynamic optically variable features. The electromagnetic waves are incident into the anti-counterfeiting element to obtain second anti-counterfeiting information according to the optically variable magnetic layer. The second anti-counterfeiting information is a color change effect. The color change effect includes a light change pattern and a hidden state of the light change pattern.

In the above technical solution, the optically variable magnetic layer is a layered structure formed by printing or coating an ink containing a magnetic optically variable pigment under the action of an orienting magnetic field.

In this technical solution, the advantage of this design is that, in the first aspect, it is ensured that the optically variable layer and the magnetic layer have the same layer structure, which is advantageous for reducing the thickness of the security element, compared to designs in which the optically variable layer and the magnetic layer have different layer structures; in the second aspect, the preparation method is simple, and is beneficial to mass production.

In the above technical scheme, the number of the infrared reflection layers is one, one side of the anti-counterfeiting element provided with the infrared reflection layer is provided with the infrared reflection characteristic, and the other side of the anti-counterfeiting element is provided with the infrared absorption characteristic.

In this technical solution, the number of the infrared reflecting layers is set to one, so that one side of the anti-counterfeiting element is the side provided with the infrared reflecting layer, and the other side is the side not provided with the infrared reflecting layer. When the infrared light source irradiates the infrared reflecting layer, the infrared reflecting layer has a strong reflecting effect on infrared light, so that one side of the anti-counterfeiting element provided with the infrared reflecting layer has an infrared reflecting characteristic. The other side of the security element has an infrared absorbing feature. Optionally, when the infrared light source irradiates one side of the anti-counterfeiting element provided with the infrared reflection layer, the light change pattern is observed to be in a hidden state; when the infrared light source irradiates the side of the anti-counterfeiting element, which is not provided with the infrared reflection layer, the light variation pattern can be observed.

In the above technical solution, the magnetic layer is disposed between the infrared reflection layer and the optically variable layer.

In this embodiment, the infrared reflection layer is provided on one side of the magnetic layer, and the optically variable layer is provided on the other side of the magnetic layer. When electromagnetic waves in the second wavelength range irradiate one side of the anti-counterfeiting element provided with the infrared reflecting layer, the magnetic light change pattern is observed to be in a hidden state; when electromagnetic waves in the second wavelength range irradiate the side of the anti-counterfeiting element, which is not provided with the infrared reflection layer, a magnetic optically variable pattern can be observed.

In the above technical scheme, the number of the infrared reflection layers is two, the magnetic layer and the optically variable layer are arranged between the two infrared reflection layers, and each of the two sides of the anti-counterfeiting element has infrared reflection characteristics.

In the technical scheme, the number of the infrared reflecting layers is two, and the magnetic layer and the optical variable layer are arranged between the two infrared reflecting layers, so that two sides of the anti-counterfeiting element are one side provided with the infrared reflecting layers. When the infrared light source irradiates the infrared reflecting layer, the infrared reflecting layer has a strong reflecting effect on infrared light, so that one side of the anti-counterfeiting element provided with the infrared reflecting layer has an infrared reflecting characteristic. The magnetic light pattern is observed to be hidden by the infrared light source irradiating any side of the anti-counterfeiting element.

In the above technical solution, the coverage area of the magnetic layer is not larger than the coverage area of the infrared reflection layer.

In this technical solution, the region where the infrared reflection layer is located can completely cover the region where the magnetic layer is located, so as to ensure that light will be directed to the infrared reflection layer first when the light source (such as a visible light source or an infrared light source) irradiates at least one side of the security element.

In the above technical solution, the transmittance of the infrared reflection layer for electromagnetic waves in the first wavelength range is not less than 80%; and/or the infrared reflection layer has a reflectivity of not less than 80% for electromagnetic waves in the second wavelength region.

In the technical scheme, the transmissivity of the infrared reflecting layer to the electromagnetic wave in the first wavelength interval is more than or equal to 80%, and the infrared reflecting layer has a transmission effect to the electromagnetic wave in the first wavelength interval and has almost no shielding effect.

Optionally, the reflectivity of the infrared reflection layer to the electromagnetic wave in the second wavelength interval is greater than or equal to 80%, and the infrared reflection layer has a reflection effect to the electromagnetic wave in the second wavelength interval, that is, the infrared reflection layer has a strong shielding effect to the electromagnetic wave in the second wavelength interval.

In the above technical solution, the first wavelength interval is 400nm to 700nm; and/or the second wavelength interval is 800nm to 1500nm; and/or the third wavelength interval is 400nm to 1500nm.

In this technical scheme, by setting the first wavelength interval to 400nm to 700nm, the infrared reflection layer has a transmission effect on electromagnetic waves having wavelengths of 400nm to 700 nm. The wavelength range of visible light is 400nm to 700nm, and therefore, the infrared reflection layer has a transmission effect on visible light with little shielding effect. Optically variable patterns can be observed on either side of the security element illuminated by a visible light source.

By setting the second wavelength region to 800nm to 1500nm, the infrared reflection layer has a reflection effect on electromagnetic waves having wavelengths of 800nm to 1500nm. The wavelength range of the near infrared band is 700nm to 1500nm. When the infrared light source irradiates the infrared reflecting layer, the infrared reflecting layer has a strong reflecting effect on the near infrared band, namely, the infrared reflecting layer has a strong shielding effect on the near infrared band. When the infrared light source irradiates one side of the anti-counterfeiting element provided with the infrared reflecting layer, the light change pattern is observed to be in a hidden state, so that an infrared hiding function is realized; when the infrared light source irradiates the side of the anti-counterfeiting element, which is not provided with the infrared reflection layer, the light variation pattern can be observed.

By setting the third wavelength interval to 400nm to 1500nm, the magnetic layer has strong absorption characteristics for electromagnetic waves having wavelengths of 400nm to 1500nm, the magnetic layer can be observed by naked eyes under visible light (the magnetic layer does not have a hiding function under visible light), and the magnetic layer does not have a hiding function under infrared light, so that the magnetic optically variable pattern also does not have an infrared hiding function.

In the above technical solution, the infrared reflecting layer is a layered structure formed by overlapping a first dielectric layer and a second dielectric layer, and the refractive index of the first dielectric layer is greater than that of the second dielectric layer.

In the technical scheme, the infrared reflecting layer is formed by periodically and repeatedly overlapping a first dielectric layer with a high refractive index and a second dielectric layer with a low refractive index. It should be noted that the number of the first dielectric layers is at least one, i.e. the first dielectric layers may be one, two or more; the number of second dielectric layers is at least one, i.e. the second dielectric layers may be one, two or more. And flexibly setting the first dielectric layer and the second dielectric layer according to actual requirements.

In the above technical solution, the thickness of the infrared reflecting layer is not more than 200nm.

In the technical scheme, the thickness of the infrared reflecting layer is less than or equal to 200nm. By controlling the thickness of the infrared reflecting layer, it can be ensured that the overall thickness of the security element is not too great.

In a second aspect, the invention provides a security product comprising: a substrate layer; the anti-counterfeiting element in any one of the above technical solutions is provided on the substrate layer.

According to the technical scheme of the anti-counterfeiting product, the anti-counterfeiting product comprises a substrate layer and the anti-counterfeiting element in any one of the technical scheme, and the anti-counterfeiting element is arranged on the substrate layer. The magnetic layer of the security element has first security information. The first security information is a magnetic signal that can be detected. The magnetic signal is a soft magnetic signal or a hard magnetic signal. The specific device can detect the magnetic signal of the magnetic layer and determine the magnetic image through the magnetic signal so as to acquire the first anti-counterfeiting information. Further, the optically variable layer of the security element has dynamic optically variable features. The optically variable layer has a color change effect when the reflection viewing angle is changed or when the transmission or reflection viewing is performed. The electromagnetic waves are incident on the security element to obtain second security information from the optically variable layer. The second anti-counterfeiting information is a color change effect. The color change effect includes a light change pattern and a hidden state of the light change pattern. Specifically, when electromagnetic waves in the second wavelength range irradiate one side of the anti-counterfeiting element provided with the infrared reflecting layer, the light change pattern is observed to be in a hidden state, so that a hiding function is realized; when electromagnetic waves in the second wavelength range irradiate the side of the anti-counterfeiting element, which is not provided with the infrared reflection layer, the optically variable pattern can be observed. The optically variable pattern can be observed on either side of the security element when irradiated with electromagnetic waves in the first wavelength region.

It is worth noting that the material of the base material layer is paper; or the material of the substrate layer is bopp (biaxially oriented polypropylene film); or the material of the base material layer is pet (polyethylene terephthalate); or the material of the base material layer is paper-plastic composite. Optionally, the substrate layer is a pet film.

The anti-counterfeiting product comprises any one of the anti-counterfeiting elements in the first aspect, so that the anti-counterfeiting product has the beneficial effects of any one of the technical schemes, and the anti-counterfeiting product is not described in detail herein.

In the technical scheme, the infrared reflecting layer of the anti-counterfeiting element is arranged on the substrate layer in a labeling, hot stamping or copying mode; the optically variable magnetic layer of the anti-counterfeiting element is arranged on the substrate layer in a printing mode; or the magnetic layer of the anti-counterfeiting element is arranged on the substrate layer in a labeling, hot stamping or copying way; the optically variable layer of the security element is provided on the substrate layer by means of labeling, hot stamping or copying.

In this embodiment, when the magnetic layer and the optically variable layer have the same layer structure (optically variable magnetic layer), the optically variable magnetic layer is provided on the base layer by printing. When the magnetic layer and the optically variable layer are in a split structure, the magnetic layer and the optically variable layer are arranged on the substrate layer in the same way as the infrared reflecting layer by labeling, hot stamping or copying.

In the above technical solution, the substrate layer has a transparent area, and at least part of the anti-counterfeiting element is disposed in the transparent area.

In the technical scheme, at least one part of the anti-counterfeiting element is arranged in a transparent area of the substrate layer, and when electromagnetic waves in a second wavelength interval irradiate one side of the anti-counterfeiting element, which is provided with the infrared reflection layer, the light change pattern is observed to be in a hidden state, so that a hiding function is realized; when electromagnetic waves in the second wavelength range irradiate the side of the anti-counterfeiting element, which is not provided with the infrared reflection layer, the optically variable pattern can be observed. The optically variable pattern can be observed on either side of the security element when irradiated with electromagnetic waves in the first wavelength region. It should be noted that the number of the transparent areas is at least one, that is, the number of the transparent areas can be one, two or more, and the transparent areas are flexibly set according to actual requirements.

In the above technical solution, the magnetic layer of the anti-counterfeiting element is disposed on one side of the substrate layer, and the at least one infrared reflection layer of the anti-counterfeiting element is disposed on the other side of the substrate layer.

In the technical scheme, at least one infrared reflecting layer and the magnetic layer are arranged on two opposite sides of the substrate layer. When the number of the infrared reflecting layers is one, the sequence of each layer structure is the infrared reflecting layer, the substrate layer and the magnetic layer, or the sequence of each layer structure is the magnetic layer, the substrate layer and the infrared reflecting layer; when the number of the infrared reflecting layers is two, the order of each layer structure is the infrared reflecting layer, the substrate layer, the magnetic layer and the infrared reflecting layer.

Additional aspects and advantages of the present invention will be made apparent from the description which follows, or may be learned by practice of the invention.

Drawings

FIG. 1 shows a first schematic view of a security element according to one embodiment of the invention;

FIG. 2 shows a second schematic view of a security element according to one embodiment of the invention;

FIG. 3 shows a third schematic representation of a security element according to one embodiment of the invention;

FIG. 4 shows a fourth schematic representation of a security element according to one embodiment of the invention;

Fig. 5 shows a first schematic view of a security product according to an embodiment of the application;

fig. 6 shows a second schematic view of a security product according to an embodiment of the application;

fig. 7 shows a third schematic view of a security product according to an embodiment of the application;

fig. 8 shows a fourth schematic view of a security product according to an embodiment of the application;

fig. 9 shows a fifth schematic view of a security product according to an embodiment of the application;

fig. 10 shows a sixth schematic view of a security product according to an embodiment of the application;

FIG. 11 shows a seventh schematic representation of a security product according to an embodiment of the application;

fig. 12 shows an eighth schematic view of a security product according to an embodiment of the application.

The correspondence between the reference numerals and the component names in fig. 1 to 12 is:

100: a security element; 110: an infrared reflecting layer; 120: a magnetic layer; 130: an optically variable layer; 140: an optically variable magnetic layer; 200: an anti-counterfeiting product; 210: a substrate layer; 211: transparent areas.

Detailed Description

In order that the above-recited objects, features and advantages of embodiments of the present application can be more clearly understood, a further detailed description of embodiments of the present application will be rendered by reference to the appended drawings and detailed description thereof. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, embodiments of the application may be practiced otherwise than as described herein, and therefore the scope of the application is not limited to the specific embodiments disclosed below.

A security element 100 and a security product 200 provided according to some embodiments of the present application are described below with reference to fig. 1-12.

In one embodiment according to the present application, as shown in FIGS. 1 and 2, security element 100 includes an infrared reflective layer 110, a magnetic layer 120, and an optically variable layer 130. The infrared reflection layer 110 has a transmission effect on electromagnetic waves in the first wavelength region. Alternatively, the transmittance of the infrared reflection layer 110 for electromagnetic waves of the first wavelength region is not less than 80%. The infrared reflection layer 110 has little shielding effect against electromagnetic waves in the first wavelength region. Optionally, the first wavelength interval is 400nm to 700nm. The wavelength region of visible light is 400nm to 700nm, and thus, the infrared reflection layer 110 has a transmission effect for visible light with little shielding effect.

Further, the infrared reflection layer 110 has a reflection effect on electromagnetic waves of the second wavelength region. Alternatively, the infrared reflection layer 110 has a reflectivity of not less than 80% for electromagnetic waves in the second wavelength region. The infrared reflection layer 110 has a strong shielding effect on electromagnetic waves in the second wavelength region. Optionally, the second wavelength interval is 800nm to 1500nm. The wavelength range of the near infrared band is 700nm to 1500nm. When the infrared light source irradiates the infrared reflection layer 110, the infrared reflection layer 110 has a strong reflection effect on the near infrared band, that is, the infrared reflection layer 110 has a strong shielding effect on the near infrared band.

Further, the number of the infrared reflecting layers 110 is at least one. The infrared reflecting layer 110 may be one or two. Further, the magnetic layer 120 is disposed on one side of the infrared reflecting layer 110. If the number of the infrared reflection layers 110 is one, the magnetic layer 120 may be disposed on any one of two sides of the infrared reflection layer 110; if the number of the infrared reflecting layers 110 is two, the magnetic layer 120 is disposed between the two infrared reflecting layers 110. Alternatively, the magnetic layer 120 is a layered structure formed by printing or coating with an ink containing a magnetic pigment.

Further, the magnetic layer 120 has an absorption characteristic for electromagnetic waves in the third wavelength region. At least a portion of the first wavelength interval is within the third wavelength interval. Since the infrared reflection layer 110 has a transmission effect on the electromagnetic wave of the first wavelength region, the electromagnetic wave of the first wavelength region can be transmitted through the infrared reflection layer 110 to the magnetic layer 120. Since at least a portion of the first wavelength interval is within the third wavelength interval, the magnetic layer 120 has an absorption characteristic for electromagnetic waves at least a portion of the first wavelength interval and within the third wavelength interval. Optionally, the electromagnetic wave of the first wavelength interval is visible light, and at least part of the wavelength band (wavelength interval) of the visible light is within the third wavelength interval. The magnetic layer 120 has an absorption characteristic for at least a part of visible light, and the magnetic layer 120 can be observed by naked eyes under the visible light.

Alternatively, the infrared reflecting layer 110 is prepared on a pet (polyethylene terephthalate) film by vapor deposition, where the pet film is removable. The infrared reflecting layer 110 is provided on the substrate layer 210 of the anti-counterfeiting product 200 by labeling, hot stamping or copying.

Optionally, the magnetic layer 120 has a footprint that is no greater than the footprint of the infrared-reflection layer 110. The region of the ir reflecting layer 110 can completely cover the region of the magnetic layer 120 to ensure that light is first directed toward the ir reflecting layer 110 when a light source (e.g., a visible light source or an infrared light source) irradiates at least one side of the security element 100.

Further, the magnetic layer 120 has first anti-counterfeiting information. The first security information is a magnetic signal that can be detected. The magnetic signal is a soft magnetic signal or a hard magnetic signal. The specific device can detect the magnetic signal of the magnetic layer 120 and determine a magnetic image through the magnetic signal to obtain the first security information.

Further, an optically variable layer 130 is provided on the magnetic layer 120. Optically variable layer 130 has dynamic optically variable features. The optically variable layer 130 has a color change effect when changing the reflection observation angle or when transmitting and reflecting observation. Electromagnetic waves are incident on security element 100 to obtain second security information from optically variable layer 130. The second anti-counterfeiting information is a color change effect. The color change effect includes a light change pattern and a hidden state of the light change pattern.

Specifically, when the electromagnetic wave in the second wavelength range irradiates the side of the anti-counterfeiting element 100 provided with the infrared reflection layer 110, the light pattern is observed to be in a hidden state, so that a hiding function is realized; when electromagnetic waves in the second wavelength range irradiate the side of the security element 100 where the infrared reflection layer 110 is not provided, a light-variable pattern is observed. Optically variable patterns can be observed on either side of security element 100 when irradiated with electromagnetic waves in a first wavelength region.

Optionally, when the infrared light source irradiates one side of the anti-counterfeiting element 100 provided with the infrared reflection layer 110, the light change pattern is observed to be in a hidden state, so that an infrared hiding function is realized; when infrared light source irradiates the side of security element 100 not provided with infrared reflecting layer 110, a optically variable pattern is observed. Optically variable patterns can be observed by illumination of either side of security element 100 with a visible light source.

The first anti-counterfeiting information and the second anti-counterfeiting information can be obtained through the anti-counterfeiting element 100, the problem of single anti-counterfeiting information in the traditional technology is effectively solved, the anti-counterfeiting effect is improved, and the machine-readable anti-counterfeiting performance of magnetic patterns, particularly magnetic dynamic optically variable patterns, can be improved. In addition, since the color change effect observed by the electromagnetic wave in the first wavelength region and the electromagnetic wave in the second wavelength region irradiating the anti-counterfeiting element 100 are not consistent, and the color change effect observed by the electromagnetic wave in the second wavelength region irradiating both sides of the anti-counterfeiting element 100 may also be inconsistent (in the case that only one side of the anti-counterfeiting element 100 is provided with the infrared reflection layer 110), the design is beneficial to further improving the anti-counterfeiting effect, and is not easy to be imitated by similar products.

In one embodiment according to the present invention, as shown in fig. 3 and 4, the magnetic layer 120 and the optically variable layer 130 are in a unitary structure, and the magnetic layer 120 and the optically variable layer 130 constitute an optically variable magnetic layer 140. Optically variable layer 130 is the same layer structure as magnetic layer 120, i.e., optically variable magnetic layer 140. Alternatively, the optically variable magnetic layer 140 is made of an ink containing a magnetic optically variable pigment by printing or coating under the action of an orienting magnetic field. The optically variable magnetic layer 140 has a magnetic signal. The magnetic signal is a soft magnetic signal or a hard magnetic signal. The specific device can detect the magnetic signal of the magnetic layer 120 and determine a magnetic image through the magnetic signal to obtain the first security information.

Further, the optically variable magnetic layer 140 has dynamic optically variable features. Electromagnetic waves are incident on security element 100 to obtain second security information from optically variable magnetic layer 140. The second anti-counterfeiting information is a color change effect. The color change effect includes a light change pattern and a hidden state of the light change pattern.

Further, the optically variable magnetic layer 140 is a layered structure formed by printing or coating an ink containing a magnetic optically variable pigment under the action of an orienting magnetic field. The advantage of this design is that, in the first aspect, it is ensured that the optically variable layer 130 and the magnetic layer 120 have the same layer structure, which is advantageous for reducing the thickness of the security element 100 compared to the design in which the optically variable layer 130 and the magnetic layer 120 have different layer structures; in the second aspect, the preparation method is simple, and is beneficial to mass production.

In one embodiment according to the present invention, as shown in fig. 1 and 3, the number of infrared reflecting layers 110 is one. One side of security element 100 where infrared reflective layer 110 is disposed has infrared reflective characteristics and the other side of security element 100 has infrared absorbing characteristics.

By setting the number of infrared-reflection layers 110 to one, one side of security element 100 is the side provided with infrared-reflection layer 110, and the other side is the side not provided with infrared-reflection layer 110. When the infrared light source irradiates the infrared reflection layer 110, the infrared reflection layer 110 has a strong reflection effect on infrared light, so that the side of the security element 100 provided with the infrared reflection layer 110 has an infrared reflection characteristic. The other side of security element 100 has an infrared absorbing feature. Alternatively, when the infrared light source irradiates the side of the security element 100 where the infrared reflection layer 110 is provided, the optically variable pattern is observed to be in a hidden state; when infrared light source irradiates the side of security element 100 not provided with infrared reflecting layer 110, a optically variable pattern is observed.

Further, the magnetic layer 120 is disposed between the infrared reflecting layer 110 and the optically variable layer 130. The infrared reflecting layer 110 is disposed on one side of the magnetic layer 120, and the optically variable layer 130 is disposed on the other side of the magnetic layer 120. When electromagnetic waves in the second wavelength range irradiate one side of the anti-counterfeiting element 100 provided with the infrared reflection layer 110, the magnetic light change pattern is observed to be in a hidden state; when electromagnetic waves in the second wavelength range irradiate the side of the security element 100 where the infrared reflection layer 110 is not provided, a magnetic optically variable pattern is observed.

In another embodiment, as shown in fig. 2 and 4, the number of infrared reflecting layers 110 is two, and the magnetic layer 120 and the optically variable layer 130 are disposed between the two infrared reflecting layers 110. Each of the two sides of security element 100 has an infrared reflective feature. Both sides of security element 100 are the sides provided with infrared reflecting layer 110. When the infrared light source irradiates the infrared reflection layer 110, the infrared reflection layer 110 has a strong reflection effect on infrared light, so that the side of the security element 100 provided with the infrared reflection layer 110 has an infrared reflection characteristic. The magnetic optically variable pattern is observed to be hidden by illumination of either side of security element 100 by an infrared light source.

In one embodiment according to the invention, the magnetic layer 120 has a footprint that is no greater than the footprint of the infrared-reflection layer 110. The region of the ir reflecting layer 110 can completely cover the region of the magnetic layer 120 to ensure that light is first directed toward the ir reflecting layer 110 when a light source (e.g., a visible light source or an infrared light source) irradiates at least one side of the security element 100.

In one embodiment according to the present invention, the transmittance of the electromagnetic wave of the first wavelength interval by the infrared reflection layer 110 is not less than 80%. The infrared reflection layer 110 has a transmittance of 80% or more for electromagnetic waves in the first wavelength region, and the infrared reflection layer 110 has a transmittance effect for electromagnetic waves in the first wavelength region with little shielding effect.

In another embodiment, the infrared reflection layer 110 has a reflectivity of not less than 80% for electromagnetic waves in the second wavelength region. The reflectivity of the infrared reflection layer 110 to the electromagnetic wave in the second wavelength interval is greater than or equal to 80%, and the infrared reflection layer 110 has a reflection effect to the electromagnetic wave in the second wavelength interval, that is, the infrared reflection layer 110 has a strong shielding effect to the electromagnetic wave in the second wavelength interval.

In one embodiment according to the invention, the first wavelength interval is 400nm to 700nm. By setting the first wavelength region to 400nm to 700nm, the infrared reflection layer 110 has a transmission effect for electromagnetic waves having a wavelength of 400nm to 700nm. The wavelength region of visible light is 400nm to 700nm, and thus, the infrared reflection layer 110 has a transmission effect for visible light with little shielding effect. Optically variable patterns can be observed by illumination of either side of security element 100 with a visible light source.

In another embodiment, the second wavelength interval is 800nm to 1500nm. By setting the second wavelength region to 800nm to 1500nm, the infrared reflection layer 110 has a reflection effect on electromagnetic waves having wavelengths of 800nm to 1500nm. The wavelength range of the near infrared band is 700nm to 1500nm. When the infrared light source irradiates the infrared reflection layer 110, the infrared reflection layer 110 has a strong reflection effect on the near infrared band, that is, the infrared reflection layer 110 has a strong shielding effect on the near infrared band. When the infrared light source irradiates one side of the anti-counterfeiting element 100 provided with the infrared reflecting layer 110, the light change pattern is observed to be in a hidden state, so that an infrared hiding function is realized; when infrared light source irradiates the side of security element 100 not provided with infrared reflecting layer 110, a optically variable pattern is observed.

In another embodiment, the third wavelength interval is 400nm to 1500nm. By setting the third wavelength interval to 400nm to 1500nm, the magnetic layer 120 has strong absorption characteristics for electromagnetic waves having wavelengths of 400nm to 1500nm, the magnetic layer 120 can be observed with naked eyes under visible light (the magnetic layer 120 does not have a hiding function under visible light), and the magnetic layer 120 does not have a hiding function under infrared light, so that the magnetic optically variable pattern also does not have an infrared hiding function.

In another embodiment, the third wavelength interval is 450nm to 1200nm. By setting the third wavelength region to 450nm to 1200nm, the magnetic layer 120 has an absorption characteristic for electromagnetic waves having a wavelength of 450nm to 1200nm. The electromagnetic wave in the first wavelength region is visible light, and at least part of the wavelength region (wavelength region) of the visible light is in the third wavelength region. The magnetic layer 120 has an absorption characteristic for at least a part of visible light, and the magnetic layer 120 can be observed by naked eyes under the visible light.

Optionally, the third wavelength interval is 500nm to 1000nm.

In one embodiment according to the present invention, the infrared reflecting layer 110 is a layered structure formed by overlapping a first dielectric layer and a second dielectric layer, and the refractive index of the first dielectric layer is greater than that of the second dielectric layer. The infrared reflecting layer 110 is formed by periodically overlapping a first dielectric layer with a high refractive index and a second dielectric layer with a low refractive index. It should be noted that the number of the first dielectric layers is at least one, i.e. the first dielectric layers may be one, two or more; the number of second dielectric layers is at least one, i.e. the second dielectric layers may be one, two or more. And flexibly setting the first dielectric layer and the second dielectric layer according to actual requirements.

In another embodiment, the thickness of the infrared reflective layer 110 is not greater than 200nm, i.e., the thickness of the infrared reflective layer 110 is less than or equal to 200nm. By controlling the thickness of infrared-reflecting layer 110, it is ensured that the overall thickness of security element 100 is not excessive.

In one embodiment according to the present invention, as shown in fig. 5, 6, 7, 8, 9, 10, 11 and 12, the security product 200 includes a substrate layer 210 and the security element 100 of any of the above embodiments, where the security element 100 is disposed on the substrate layer 210. The magnetic layer 120 of the security element 100 has first security information. The first security information is a magnetic signal that can be detected. The magnetic signal is a soft magnetic signal or a hard magnetic signal. The specific device can detect the magnetic signal of the magnetic layer 120 and determine a magnetic image through the magnetic signal to obtain the first security information. Further, optically variable layer 130 of security element 100 has dynamic optically variable features. The optically variable layer 130 has a color change effect when changing the reflection observation angle or when transmitting and reflecting observation. Electromagnetic waves are incident on security element 100 to obtain second security information from optically variable layer 130. The second anti-counterfeiting information is a color change effect. The color change effect includes a light change pattern and a hidden state of the light change pattern. Specifically, when the electromagnetic wave in the second wavelength range irradiates the side of the anti-counterfeiting element 100 provided with the infrared reflection layer 110, the light pattern is observed to be in a hidden state, so that a hiding function is realized; when electromagnetic waves in the second wavelength range irradiate the side of the security element 100 where the infrared reflection layer 110 is not provided, a light-variable pattern is observed. Optically variable patterns can be observed on either side of security element 100 when irradiated with electromagnetic waves in a first wavelength region.

It should be noted that the material of the substrate layer 210 is paper; or the material of the base material layer 210 is bopp (biaxially oriented polypropylene film); or the material of the substrate layer 210 is pet (polyethylene terephthalate); or the material of the substrate layer 210 is paper-plastic composite. Optionally, the substrate layer 210 is a pet film.

Further, as shown in fig. 9, 10 and 11, the infrared reflecting layer 110 of the anti-counterfeiting element 100 is disposed on the substrate layer 210 by labeling, hot stamping or copying; optically variable magnetic layer 140 of security element 100 is provided on substrate layer 210 by printing; or the magnetic layer 120 of the anti-counterfeiting element 100 is arranged on the substrate layer 210 in a labeling, hot stamping or copying manner; optically variable layer 130 of security element 100 is provided on substrate layer 210 by means of labeling, stamping or copying. When the magnetic layer 120 and the optically variable layer 130 have the same layer structure (the optically variable magnetic layer 140), the optically variable magnetic layer 140 is disposed on the substrate layer 210 by printing. When the magnetic layer 120 and the optically variable layer 130 are in a split structure, the magnetic layer 120 and the optically variable layer 130 are disposed on the substrate layer 210 by labeling, hot stamping or copying, as is the case with the infrared reflective layer 110.

In one embodiment according to the present invention, as shown in FIG. 12, substrate layer 210 has transparent region 211, and at least a portion of security element 100 is disposed in transparent region 211. At least a part of the transparent region 211 of the anti-counterfeiting element 100 is arranged on the substrate layer 210, and when the infrared light source irradiates one side of the anti-counterfeiting element 100 provided with the infrared reflection layer 110, the light change pattern is observed to be in a hidden state; when infrared light source irradiates the side of security element 100 not provided with infrared reflecting layer 110, a optically variable pattern is observed. Optically variable patterns can be observed by illumination of either side of security element 100 with a visible light source. It should be noted that the number of the transparent areas 211 is at least one, that is, the transparent areas 211 may be one, two or more, and the transparent areas 211 are flexibly set according to actual requirements.

In one embodiment according to the present invention, magnetic layer 120 of security element 100 is disposed on one side of substrate layer 210, and at least one infrared-reflective layer 110 of security element 100 is disposed on the other side of substrate layer 210. At least one infrared reflecting layer 110 and magnetic layer 120 are disposed on opposite sides of substrate layer 210. When the number of the infrared reflection layers 110 is one, the order of each layer structure is the infrared reflection layer 110, the base material layer 210, and the magnetic layer 120, or the order of each layer structure is the magnetic layer 120, the base material layer 210, and the infrared reflection layer 110; when the number of the infrared reflection layers 110 is two, the respective layer structures are in the order of the infrared reflection layers 110, the base material layer 210, the magnetic layer 120, and the infrared reflection layers 110.

According to the embodiment of the anti-counterfeiting element and the anti-counterfeiting product, the first anti-counterfeiting information and the second anti-counterfeiting information can be obtained through the anti-counterfeiting element, the problem of single anti-counterfeiting information in the traditional technology is effectively solved, the anti-counterfeiting effect is improved, and the machine-readable anti-counterfeiting performance of magnetic patterns, particularly magnetic dynamic optically variable patterns, can be improved. In addition, the color change effect observed by the electromagnetic wave in the first wavelength interval and the color change effect observed by the electromagnetic wave in the second wavelength interval irradiating the anti-counterfeiting element are not consistent, and the color change effect observed by the electromagnetic wave in the second wavelength interval irradiating the two sides of the anti-counterfeiting element may not be consistent (under the condition that only one side of the anti-counterfeiting element is provided with an infrared reflecting layer), so that the design mode is beneficial to further improving the anti-counterfeiting effect, and is not easy to imitate by similar products.

In the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A security element comprising:

at least one infrared reflecting layer (110), the infrared reflecting layer (110) having a transmission effect on electromagnetic waves in a first wavelength interval, the infrared reflecting layer (110) having a reflection effect on electromagnetic waves in a second wavelength interval;

a magnetic layer (120) disposed on one side of the infrared reflection layer (110), wherein the magnetic layer (120) has an absorption characteristic for electromagnetic waves in a third wavelength interval, at least a part of the first wavelength interval is within the third wavelength interval, and the magnetic layer (120) has first anti-counterfeiting information, and the first anti-counterfeiting information is a detectable magnetic signal;

and an optically variable layer (130) provided on the magnetic layer (120), wherein the optically variable layer (130) has a dynamic optically variable characteristic, and electromagnetic waves are incident on the security element to obtain second security information from the optically variable layer (130).

2. The security element of claim 1, wherein the magnetic layer (120) and the optically variable layer (130) are of unitary construction, the magnetic layer (120) and the optically variable layer (130) comprising an optically variable magnetic layer (140), the optically variable magnetic layer (140) having the magnetic signal and the dynamic optically variable feature.

3. The security element of claim 2, wherein the optically variable magnetic layer (140) is a layered structure formed by printing or coating with an ink containing a magnetic optically variable pigment under the influence of an orienting magnetic field.

4. A security element according to claim 1, characterized in that the number of infrared reflecting layers (110) is one, the security element having an infrared reflecting feature on the side where the infrared reflecting layers (110) are provided and an infrared absorbing feature on the other side.

5. The security element of claim 4 wherein the magnetic layer (120) is disposed between the infrared reflective layer (110) and the optically variable layer (130).

6. The security element of claim 1 wherein the number of infrared reflective layers (110) is two, the magnetic layer (120) and the optically variable layer (130) being disposed between two of the infrared reflective layers (110), each of the two sides of the security element having infrared reflective features.

7. The security element of claim 1 wherein the magnetic layer (120) has a footprint that is no greater than the footprint of the infrared reflective layer (110).

8. The security element of any one of claims 1 to 7, wherein the transmission of electromagnetic waves of the first wavelength interval by the infrared reflecting layer (110) is not less than 80%; and/or the infrared reflection layer (110) has a reflectivity of not less than 80% for electromagnetic waves in the second wavelength region.

9. The security element of any one of claims 1 to 7 wherein the first wavelength interval is 400nm to 700nm; and/or the second wavelength interval is 800nm to 1500nm; and/or the third wavelength interval is 400nm to 1500nm.

10. The security element of any one of claims 1 to 7, wherein the infrared reflecting layer (110) is a layered structure formed by a first dielectric layer and a second dielectric layer overlapping each other, the refractive index of the first dielectric layer being greater than the refractive index of the second dielectric layer.

11. The security element of any one of claims 1 to 7, wherein the thickness of the infrared reflecting layer (110) is no greater than 200nm.

12. A security product, comprising:

a substrate layer (210);

the security element of any one of claims 1 to 11, provided on the substrate layer (210).

13. The anti-counterfeiting product according to claim 12, wherein the infrared reflecting layer (110) of the anti-counterfeiting element is provided on the substrate layer (210) by means of labeling, hot stamping or copying;

the optically variable magnetic layer (140) of the security element is provided on the substrate layer (210) by means of printing; or (b)

The magnetic layer (120) of the anti-counterfeiting element is arranged on the base material layer (210) in a labeling, hot stamping or copying mode;

the optically variable layer (130) of the security element is provided on the substrate layer (210) by means of labeling, hot stamping or copying.

14. The security product of claim 12, wherein the substrate layer (210) has a transparent region (211), at least a portion of the security element being disposed in the transparent region (211).

15. The security product of claim 12 wherein the magnetic layer (120) of the security element is disposed on one side of the substrate layer (210) and the at least one infrared reflective layer (110) of the security element is disposed on the other side of the substrate layer (210).