Patent Description:
Due to various existing illegal phenomena, such as counterfeiting, fake license plate, etc., it is necessary to provide a hot stamping film that is easy to detect and difficult to counterfeit, so as to effectively implement anti-counterfeiting.

<CIT> discloses an embossed film. The embossed film includes a transparent separation layer, an opaque decorative layer, a protective layer, a light-changing layer and a light reflective layer. The light-changing layer disposed on the light reflective layer, the protective layer is disposed on the light-changing layer, the decorative layer is disposed on the protective layer, and the separation layer is disposed on the decorative layer. The decorative layer has a plurality of interruptions spaced apart from each other, and the anti-counterfeiting information on the light-changing layer can be seen through the interruptions. The proportion of the layout area of the anti-counterfeiting information on the light-changing layer needs to be less than <NUM>% of the entire area of the embossed film, otherwise the overall effect will be affected, that is, the anti-counterfeiting information on the light-changing layer cannot be arranged in large area. Since the ratio of the anti-counterfeiting information is relatively small, after the embossed film is cut according to the number on the corresponding license plate, the embossed film after being cut probably has no anti-counterfeiting information and the anti-counterfeiting effect is not achieved.

Particularly, documents of <CIT>, <CIT>, <CIT>, <CIT>, and <CIT> have disclosed some relevant stamping films according to the state of the art.

The anti-counterfeiting information on the existing light-changing layer cannot be arranged in large area. Since the ratio of the anti-counterfeiting information is relatively small, after the embossed film is cut according to the number on the corresponding license plate, the embossed film after being cut probably has no anti-counterfeiting information and the anti-counterfeiting effect is not achieved.

In view of the above, the present invention provides an anti-counterfeiting hot stamping film, which is not limited by an area ratio, can arrange the anti-counterfeiting information in large area, does not exhibit anti-counterfeiting marks without illumination, does not affect the basic functions of the license plate, and has a good overall visual effect.

An anti-counterfeiting hot stamping film according to the invention is defined in claim <NUM>.

In an embodiment of the present invention, the anti-counterfeiting information layer is disposed on the first color layer, the optical protective layer is disposed on the anti-counterfeiting information layer, and the second color layer is disposed on the optical protective layer.

In an embodiment of the present invention, the anti-counterfeiting information layer is provided with a plurality of micro/nano structures, and the micro/nano structures are invisible watermarks with an anti-counterfeiting effect.

In an embodiment of the present invention, the optical protective layer has a nanoscale thickness, the optical protective layer is penetrable to light and is able to reflect light.

In an embodiment of the present invention, the anti-counterfeiting hot stamping film further includes an adhesive layer disposed on the second color layer.

In an embodiment of the present invention, the anti-counterfeiting hot stamping film further includes a base film layer, a release layer and a protective layer. The release layer is disposed on the base film layer, the protective layer is disposed on the release layer, and the first color layer is disposed on the protective layer.

In an embodiment of the present invention, the first color layer is formed of one pigment or formed of a plurality of pigments, the second color layer is formed of one pigment or a plurality of pigments.

In an embodiment of the present invention, the anti-counterfeiting hot stamping film further includes a base film layer and a release layer. The release layer is disposed on the base film layer, and the first color layer is disposed on the release layer.

In an embodiment of the present invention, the first color layer is formed by mixing a pigment or a plurality of pigments with a protective material, the second color layer is formed of one pigment or a plurality of pigments.

In an embodiment of the present invention, the color of the second color layer is darker than the color of the first color layer.

The present invention also provides a method for manufacturing an anti-counterfeiting hot stamping film as defined in claim <NUM>.

The present invention also provides a further method for manufacturing an anti-counterfeiting hot stamping film as defined in claim <NUM>.

The present invention also provides a motor vehicle license plate including the above anti-counterfeiting hot stamping film.

In the above anti-counterfeiting hot stamping film, the anti-counterfeiting information layer is not limited by an area ratio, such that the anti-counterfeiting information can be arranged in large area to achieve an anti-counterfeiting effect. Furthermore, the anti-counterfeiting hot stamping film does not exhibit the anti-counterfeiting marks without illumination, does not affect the basic functions of the license plate, does not disturb the integrity, and has better overall visual effect.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be further described with reference to the accompanying drawings.

<FIG> is a schematic view showing the structure of an anti-counterfeiting hot stamping film according to a first embodiment of the present invention. As shown in <FIG>, in the embodiment, the anti-counterfeiting hot stamping film <NUM> includes a base film layer <NUM>, a release layer <NUM>, a protective layer <NUM>, a first color layer <NUM>, an anti-counterfeiting information layer <NUM>, an optical protective layer <NUM>, a second color layer <NUM>, and an adhesive layer <NUM>.

The base film layer <NUM> is a transparent film. In this embodiment, the base film layer <NUM> is formed of a polyester film, but is not limited thereto.

The release layer <NUM> is disposed on the base film layer <NUM>, and the release layer <NUM> is a transparent layer.

The protective layer <NUM> is disposed on the release layer <NUM>, and the protective layer <NUM> is a transparent layer for protecting the first color layer <NUM>, the anti-counterfeiting information layer <NUM>, the optical protective layer <NUM>, the second color layer <NUM> and the adhesive layer <NUM>. In this embodiment, the protective layer <NUM> also has a release effect, which can assist the release layer <NUM> to be peeled off from the base film layer <NUM> after hot stamping.

The first color layer <NUM> is disposed on the protective layer <NUM>. The first color layer <NUM> is light-penetrable, and is penetrable to light only under illumination (e.g., directly illuminated by light) and impenetrable in the absence of light. In this embodiment, the first color layer <NUM> exhibits at least one color, that is, the first color layer <NUM> may be formed of one pigment or formed of a plurality of pigments. Preferably, the first color layer <NUM> exhibits a lighter black color, i.e., the same as the color of the number on the motor vehicle license plate. Therefore, when the anti-counterfeiting hot stamping film <NUM> of this embodiment is hot stamped on the motor vehicle license plate, the integrity of the motor vehicle license plate is not disturbed.

The anti-counterfeiting information layer <NUM> is disposed on the first color layer <NUM>. The anti-counterfeiting information layer <NUM> is provided with a plurality of micro/nano structures <NUM>, which are invisible watermarks with an anti-counterfeiting effect. The micro/nano structures <NUM> can exhibit different anti-counterfeiting effects, such as emboss, invisibility, dynamic three-dimensional effect, etc. The micro/nano structures <NUM> can be made as patterns, words, letters, characters, numbers, or a combination of these symbols. In this embodiment, since the first color layer <NUM> only transmits light under illumination, the anti-counterfeiting hot stamping film <NUM> does not exhibit anti-counterfeiting marks without illumination and the anti-counterfeiting hot stamping film <NUM> is black, so that the basic functions of the motor vehicle license plate are not affected, the integrity of the motor vehicle license plate is not disturbed, and its overall visual effect is better. In addition, since the micro/nano structures <NUM> of the anti-counterfeiting information layer <NUM> have the anti-counterfeiting effect of invisible watermarks, the micro/nano structures <NUM> can be recognized only under illumination from a certain angle. The recognition is simple, the setting of the micro/nano structures <NUM> is not limited by an area ratio, the micro/nano structures <NUM> can be arranged in large area, to effectively prevent the occurrence of illegal phenomena such as counterfeiting license plates.

The optical protective layer <NUM> is disposed on the anti-counterfeiting information layer <NUM>. In this embodiment, the optical protective layer <NUM> is made of a metal or a metal compound. The optical protective layer <NUM> can increase the effect of the anti-counterfeiting information layer <NUM> and protect the anti-counterfeiting information layer <NUM> from damage. The thickness of the optical protective layer <NUM> is relatively thin (nanoscale), so that the optical protective layer <NUM> can transmit light and reflect light. When the light passes through the micro/nano structures <NUM> of the anti-counterfeiting information layer <NUM>, the light is reflected back by the optical protective layer <NUM>, such that the optical protective layer <NUM> not only can protect the anti-counterfeiting information layer <NUM>, but also can enhance the reflective effect and highlight the anti-counterfeiting information. It is noted that in order to increase the adhesion of the optical protective layer <NUM>, the surface of the optical protective layer <NUM> away from the anti-counterfeiting information layer <NUM> is subjected to surface treatment such as corona or ion electricity to make the surface at this side of the optical protective layer <NUM> to be roughening.

The second color layer <NUM> is disposed on the optical protective layer <NUM>. The second color layer <NUM> is impenetrable to light, that is, the second color layer <NUM> exhibits light impenetrability both under illumination and without illumination. In this embodiment, the second color layer <NUM> exhibits at least one color, that is, the second color layer <NUM> may be formed of one pigment or a plurality of pigments. Preferably, the second color layer <NUM> exhibits a darker black color. That is, the color of the second color layer <NUM> is darker than the color of the first color layer <NUM>.

The adhesive layer <NUM> is disposed on the second color layer <NUM>. In this embodiment, the adhesive layer <NUM> is a hot melting layer, that is, it will melt under high temperature, so that the anti-counterfeiting hot stamping film <NUM> is conveniently hot stamped on the motor vehicle license plate.

<FIG> is a schematic view showing the structure of an anti-counterfeiting hot stamping film according to a second embodiment of the present invention. As shown in <FIG>, in this embodiment, the anti-counterfeiting hot stamping film 10a includes a base film layer <NUM>, a release layer <NUM>, a first color layer <NUM>, an anti-counterfeiting information layer <NUM>, an optical protective layer <NUM>, a second color layer <NUM>, and an adhesive layer <NUM>.

The first color layer <NUM> is disposed on the release layer <NUM>. The first color layer <NUM> is light-penetrable, and is penetrable to light only under illumination (e.g., directly illuminated by light) and impenetrable in the absence of light. In this embodiment, the first color layer <NUM> is formed by mixing protective material and pigment, that is, the first color layer <NUM> in this embodiment not only can protect the anti-counterfeiting information layer <NUM>, the optical protective layer <NUM>, the second color layer <NUM> and the adhesive layer <NUM>, at the same time, the first color layer <NUM> also has a release effect, which can assist the release layer <NUM> to be peeled off from the base film layer <NUM> after hot stamping. In this embodiment, the first color layer <NUM> exhibits at least one color, that is, the first color layer <NUM> may be formed by mixing a pigment or a plurality of pigments with a protective material. Preferably, the first color layer <NUM> exhibits a lighter black color, i.e., the same as the color of the number on the motor vehicle license plate. Therefore, when the anti-counterfeiting hot stamping film 10a of this embodiment is hot stamped on the motor vehicle license plate, the integrity of the motor vehicle license plate is not disturbed.

The anti-counterfeiting information layer <NUM> is disposed on the first color layer <NUM>. The anti-counterfeiting information layer <NUM> is provided with a plurality of micro/nano structures <NUM>, which are invisible watermarks with an anti-counterfeiting effect. The micro/nano structures <NUM> can exhibit different anti-counterfeiting effects, such as emboss, invisibility, dynamic three-dimensional effect, etc. The micro/nano structures <NUM> can be made as patterns, words, letters, characters, numbers, or a combination of these symbols. In this embodiment, since the first color layer <NUM> transmits light only under illumination, the anti-counterfeiting hot stamping film 10a does not exhibit anti-counterfeiting marks without illumination and the anti-counterfeiting hot stamping film 10a is black, so that the basic functions of the motor vehicle license plate are not affected, the integrity of the motor vehicle license plate is not disturbed, and its overall visual effect is better. In addition, since the micro/nano structures <NUM> of the anti-counterfeiting information layer <NUM> have the anti-counterfeiting effect of invisible watermarks, the micro/nano structures <NUM> can be recognized only under illumination from a certain angle. The recognition is simple, the setting of the micro/nano structures <NUM> is not limited by an area ratio, the micro/nano structures <NUM> can be arranged in large area, to effectively prevent the occurrence of illegal phenomena such as counterfeiting license plates.

<FIG> is a flow chart of a method according to a third embodiment of the present invention, for manufacturing the anti-counterfeiting hot stamping film <NUM> shown in <FIG>. Referring to <FIG> and <FIG>, the method for manufacturing the anti-counterfeiting hot stamping film includes:.

Step S11: a base film layer <NUM> is provided; specifically, the base film layer <NUM> is a transparent film, and the base film layer <NUM> is formed of a polyester film.

Step S12: a release layer <NUM> is formed on the base film layer <NUM> by a coating process; specifically, the release layer <NUM> is a transparent layer.

Step S13: a protective layer <NUM> is formed on the release layer <NUM>; specifically, the protective layer <NUM> is a transparent layer for protecting the underlying coating. In this embodiment, the protective layer <NUM> also has a release effect, which can assist the release layer <NUM> to be peeled off from the base film layer <NUM> after hot stamping.

Step S14: a first color layer <NUM> is formed on the protective layer <NUM> by a coating process; specifically, the first color layer <NUM> is light-penetrable, and is penetrable to light only under illumination (e.g., directly illuminated by light) and impenetrable in the absence of light. In this embodiment, the first color layer <NUM> exhibits at least one color, that is, the first color layer <NUM> may be formed of one pigment or formed of a plurality of pigments. Preferably, the first color layer <NUM> exhibits a lighter black color, i.e., the same as the color of the number on the motor vehicle license plate. Therefore, when the anti-counterfeiting hot stamping film <NUM> of this embodiment is hot stamped on the motor vehicle license plate, the integrity of the motor vehicle license plate is not disturbed.

Step S15: an anti-counterfeiting information layer <NUM> is formed on the first color layer <NUM> by a nanoimprint process; specifically, the anti-counterfeiting information layer <NUM> has a plurality of micro/nano structures <NUM>, and the micro/nano structures <NUM> are invisible watermarks with an anti-counterfeiting effect. The micro/nano structures <NUM> can exhibit different anti-counterfeiting effects, such as emboss, invisibility, dynamic three-dimensional effect, etc. The micro/nano structures <NUM> can be made as patterns, words, letters, characters, numbers, or a combination of these symbols. In this embodiment, since the first color layer <NUM> transmits light only under illumination, the anti-counterfeiting hot stamping film <NUM> does not exhibit anti-counterfeiting marks without illumination and the anti-counterfeiting hot stamping film <NUM> is black, so that the basic functions of the motor vehicle license plate are not affected, the integrity of the motor vehicle license plate is not disturbed, and its overall visual effect is better. In addition, since the micro/nano structures <NUM> of the anti-counterfeiting information layer <NUM> have the anti-counterfeiting effect of invisible watermarks, the micro/nano structures <NUM> can be recognized only under illumination from a certain angle. The recognition is simple, the setting of the micro/nano structures <NUM> is not limited by an area ratio, the micro/nano structures <NUM> can be arranged in large area, to effectively prevent the occurrence of illegal phenomena such as counterfeiting license plates.

Step S16: an optical protective layer <NUM> is formed on the anti-counterfeiting information layer <NUM> by a vacuum plating process. In this embodiment, the optical protective layer <NUM> is made of a metal or a metal compound. The optical protective layer <NUM> can increase the effect of the anti-counterfeiting information layer <NUM> and protect the anti-counterfeiting information layer <NUM> from damage. The thickness of the optical protective layer <NUM> is relatively thin (nanoscale), so that the optical protective layer <NUM> can transmit light and reflect light. When the light passes through the micro/nano structures <NUM> of the anti-counterfeiting information layer <NUM>, the light is reflected back by the optical protective layer <NUM>, such that the optical protective layer <NUM> not only can protect the anti-counterfeiting information layer <NUM>, but also can enhance the reflective effect and highlight the anti-counterfeiting information. It is noted that in order to increase the adhesion of the optical protective layer <NUM>, the surface of the optical protective layer <NUM> away from the anti-counterfeiting information layer <NUM> is subjected to surface treatment such as corona or ion electricity to make the surface at this side of the optical protective layer <NUM> to be roughening.

Step S17: a second color layer <NUM> is formed on the optical protective layer <NUM> by using a coating process, wherein the first color layer <NUM> is penetrable to light only under illumination and the second color layer <NUM> is impenetrable to light; specifically, the second color layer <NUM> exhibits at least one color, that is, the second color layer <NUM> may be formed of one pigment or a plurality of pigments. Preferably, the second color layer <NUM> exhibits a darker black color. That is, the color of the second color layer <NUM> is darker than the color of the first color layer <NUM>.

Step S18: an adhesive layer <NUM> is formed on the second color layer <NUM> by a coating process. Specifically, the adhesive layer <NUM> is a hot melting layer, that is, it will melt under high temperature, so that the anti-counterfeiting hot stamping film <NUM> is conveniently hot stamped on the motor vehicle license plate.

<FIG> is a flow chart of a method according to a fourth embodiment of the present invention, for manufacturing the anti-counterfeiting hot stamping film 10a shown in <FIG>. Referring to <FIG> and <FIG>, the method for manufacturing the anti-counterfeiting hot stamping film includes:.

Step S21: a base film layer <NUM> is provided; specifically, the base film layer <NUM> is a transparent film, and the base film layer <NUM> is formed of a polyester film.

Step S22: a release layer <NUM> is formed on the base film layer <NUM> by a coating process; specifically, the release layer <NUM> is a transparent layer.

Step S23: a first color layer <NUM> is formed on the release layer <NUM> by a coating process; specifically, the first color layer <NUM> is light-penetrable, and is penetrable to light only under illumination (e.g., directly illuminated by light) and impenetrable in the absence of light. The first color layer <NUM> is formed by mixing protective material and pigment. Thus, the first color layer <NUM> not only can protect the underlying coating, at the same time, the first color layer <NUM> also has a release effect, which can assist the release layer <NUM> to be peeled off from the base film layer <NUM> after hot stamping. In this embodiment, the first color layer <NUM> exhibits at least one color, that is, the first color layer <NUM> may be formed by mixing a pigment or a plurality of pigments with a protective material. Preferably, the first color layer <NUM> exhibits a lighter black color, i.e., the same as the color of the number on the motor vehicle license plate. Therefore, when the anti-counterfeiting hot stamping film 10a of this embodiment is hot stamped on the motor vehicle license plate, the integrity of the motor vehicle license plate is not disturbed.

Step S24: an anti-counterfeiting information layer <NUM> is formed on the first color layer <NUM> by a nanoimprint process; specifically, the anti-counterfeiting information layer <NUM> has a plurality of micro/nano structures <NUM>, and the micro/nano structures <NUM> are invisible watermarks with an anti-counterfeiting effect. The micro/nano structures <NUM> can exhibit different anti-counterfeiting effects, such as emboss, invisibility, dynamic three-dimensional effect, etc. The micro/nano structures <NUM> can be made as patterns, words, letters, characters, numbers, or a combination of these symbols. In this embodiment, since the first color layer <NUM> transmits light only under illumination, the anti-counterfeiting hot stamping film 10a does not exhibit anti-counterfeiting marks without illumination and the anti-counterfeiting hot stamping film 10a is black, so that the basic functions of the motor vehicle license plate are not affected, the integrity of the motor vehicle license plate is not disturbed, and its overall visual effect is better. In addition, since the micro/nano structures <NUM> of the anti-counterfeiting information layer <NUM> have the anti-counterfeiting effect of invisible watermarks, the micro/nano structures <NUM> can be recognized only under illumination from a certain angle. The recognition is simple, the setting of the micro/nano structures <NUM> is not limited by an area ratio, the micro/nano structures <NUM> can be arranged in large area, to effectively prevent the occurrence of illegal phenomena such as counterfeiting license plates.

Step S25: an optical protective layer <NUM> is formed on the anti-counterfeiting information layer <NUM> by a vacuum plating process. In this embodiment, the optical protective layer <NUM> is made of a metal or a metal compound. The optical protective layer <NUM> can increase the effect of the anti-counterfeiting information layer <NUM> and protect the anti-counterfeiting information layer <NUM> from damage. The thickness of the optical protective layer <NUM> is relatively thin (nanoscale), so that the optical protective layer <NUM> can transmit light and reflect light. When the light passes through the micro/nano structures <NUM> of the anti-counterfeiting information layer <NUM>, the light is reflected back by the optical protective layer <NUM>, such that the optical protective layer <NUM> not only can protect the anti-counterfeiting information layer <NUM>, but also can enhance the reflective effect and highlight the anti-counterfeiting information. It is noted that in order to increase the adhesion of the optical protective layer <NUM>, the surface of the optical protective layer <NUM> away from the anti-counterfeiting information layer <NUM> is subjected to surface treatment such as corona or ion electricity to make the surface at this side of the optical protective layer <NUM> to be roughening.

Step S26: a second color layer <NUM> is formed on the optical protective layer <NUM> by using a coating process, wherein the first color layer <NUM> is penetrable to light only under illumination and the second color layer <NUM> is impenetrable to light; specifically, the second color layer <NUM> exhibits at least one color, that is, the second color layer <NUM> may be formed of one pigment or a plurality of pigments. Preferably, the second color layer <NUM> exhibits a darker black color. That is, the color of the second color layer <NUM> is darker than the color of the first color layer <NUM>.

Step S27: an adhesive layer <NUM> is formed on the second color layer <NUM> by a coating process. Specifically, the adhesive layer <NUM> is a hot melting layer, that is, it will melt under high temperature, so that the anti-counterfeiting hot stamping film 10a is conveniently hot stamped on the motor vehicle license plate.

The anti-counterfeiting hot stamping film <NUM>, 10a of the present invention includes a first color layer <NUM> penetrable to light under illumination and a second color layer <NUM> impenetrable to light, the first color layer <NUM> and the second color layer <NUM> are oppositely disposed, with the anti-counterfeiting information layer <NUM> and the optical protective layer <NUM> being disposed between the first color layer <NUM> and the second color layer <NUM>. The anti-counterfeiting information layer <NUM> of the anti-counterfeiting hot stamping film <NUM>, 10a is not limited by an area ratio, such that the anti-counterfeiting information can be arranged in large area to achieve an anti-counterfeiting effect. Further, the anti-counterfeiting hot stamping film <NUM>, 10a does not exhibit anti-counterfeiting marks without illumination, does not affect the basic functions of the license plate, does not disturb the integrity, and has a good overall visual effect.

In addition, the anti-counterfeiting hot stamping film <NUM>, 10a of the present invention is hot stamped, which has higher production efficiency and no flowing liquid than the previous screen printing technique, ensuring high quality and environmental protection.

The present invention also provides a motor vehicle license plate, which includes the above-mentioned anti-counterfeiting hot stamping film <NUM>, 10a. For the structure of a motor vehicle license plate, reference can be made to prior art, and details thereof are not described herein again.

The preferred embodiments of the present invention have been described in detail above with reference to the drawings, but the present invention is not limited to the specific details of the embodiments described above, and various simple modifications can be made to the technical solutions of the present invention within the scope of the present invention. The specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations are not further described in present invention.

Claim 1:
An anti-counterfeiting hot stamping film comprising a first color layer (<NUM>), an anti-counterfeiting information layer (<NUM>), an optical protective layer (<NUM>) and a second color layer (<NUM>), the first color layer (<NUM>) and the second color layer (<NUM>) are disposed oppositely, the anti-counterfeiting information layer (<NUM>) and the optical protection layer (<NUM>) are disposed between the first color layer (<NUM>) and the second color layer (<NUM>); wherein each of the first color layer (<NUM>), the anti-counterfeiting information layer (<NUM>), the optical protective layer (<NUM>) and the second color layer (<NUM>) is provided on the full surface area of the anti-counterfeiting hot stamping film, the first color layer (<NUM>) is penetrable to light only under illumination and impenetrable in the absence of light, and the second color layer (<NUM>) is impenetrable to light both under illumination and without illumination.