Optical anti-counterfeiting packaging film and optical anti-counterfeiting packaging product

Abstract

The utility model relates to an optical anti-counterfeiting packaging film and an optical anti-counterfeiting packaging product. The optical anti-counterfeit packaging film comprises a reflecting layer, a first microstructure layer, a base material layer and a second microstructure layer which are sequentially arranged in a stacked mode, the first microstructure layer comprises at least one set of microlens array, the second microstructure layer comprises a micro image-text array arranged corresponding to the microlens array, the micro image-text array comprises a plurality of micro image-text grooves, and the micro image-text grooves are arranged in the micro image-text grooves. And the micro image-text grooves are filled with printing ink. According to the optical anti-counterfeiting packaging film adopting the technical scheme, the surface, far away from the base material layer, of the second microstructure layer can be glued, varnished, printed, laminated and the like, and the combination of the reflecting layer, the first microstructure layer, the base material layer and the second microstructure layer can realize a reflecting type three-dimensional dynamic imaging effect, so that the optical anti-counterfeiting packaging film has better anti-counterfeiting performance. In addition, the utility model further relates to an optical anti-counterfeiting packaging product comprising the optical anti-counterfeiting packaging film.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-counterfeiting, in particular to an optical anti-counterfeiting packaging film and an optical anti-counterfeiting packaging product. Background Art

[0002] Among the diverse packaging materials currently available, such as wine boxes, paper has become the mainstream choice due to its environmental friendliness, lightness, and ease of printing. Covering paper with an optically textured anti-counterfeiting film uses optical technology to prevent counterfeiting and identify goods or items. This technology leverages optical principles and physical properties, using specialized processes and materials, to create specific optical effects on wine packaging. These effects are difficult to imitate or replicate, effectively protecting intellectual property rights and preventing counterfeiting and substandard products.

[0003] In the field of optical anti-counterfeiting packaging films, the orthogonal dynamic effect created by integrated imaging using microlens arrays is an excellent visual identification anti-counterfeiting solution, being applied to various packaging films. This effect generally belongs to a transmissive integrated imaging method. The outer surface of the imaging film is a microlens array, so it cannot be printed or laminated, which limits its application range. Furthermore, the single field of view of transmissive integrated imaging is generally less than 30 degrees, which limits the dynamic effects that can be designed. Utility Model Content

[0004] Based on this, it is necessary to provide an optical anti-counterfeiting packaging film and an optical anti-counterfeiting packaging product to solve the problem of how to achieve printable and laminating with three-dimensional dynamic effects.

[0005] An optical anti-counterfeiting packaging film comprises a reflective layer, a first microstructure layer, a substrate layer, and a second microstructure layer stacked in sequence, wherein the first microstructure layer comprises at least one group of microlens arrays, and the second microstructure layer comprises a micro-image array arranged corresponding to the microlens array, wherein the micro-image array comprises a plurality of micro-image grooves, and wherein the micro-image grooves are filled with ink.

[0006] In the optical anti-counterfeiting packaging film employing the technical solution of this utility model, the surface of the second microstructure layer, away from the substrate layer, can be coated with glue, varnish, printing, or lamination. The combination of the reflective layer, the first microstructure layer, the substrate layer, and the second microstructure layer achieves a reflective 3D dynamic imaging effect, providing enhanced anti-counterfeiting performance. The use of the reflective layer and the ability to customize the microlens array parameters make the product thinner and printable while maintaining a 3D dynamic effect.

[0007] In a feasible implementation, the thickness of the first microstructure layer is 1 μm to 10 μm, the thickness of the substrate layer is 16 μm to 100 μm, the thickness of the second microstructure layer is 2 μm to 5 μm, and the thickness of the reflective layer is 10 nm to 40 nm;

[0008] The particle size of the ink is smaller than the width of the micro-image groove, and the particle size of the ink is 10 nm to 15 μm.

[0009] In a feasible implementation, the optical anti-counterfeiting packaging film further includes a varnish layer, and the varnish layer is located on a side of the second microstructure layer away from the substrate layer.

[0010] In a feasible implementation, the optical anti-counterfeiting packaging film further includes a printing layer, and the printing layer is located on a side of the varnish layer away from the substrate layer.

[0011] In a feasible implementation, the optical anti-counterfeiting packaging film further includes a coating layer, and the coating layer is located on a side of the printing layer away from the substrate layer.

[0012] In a feasible implementation, the first optical microstructure layer further includes a relief microstructure or a light and shadow microstructure;

[0013] The reflective layer is a metal reflective layer.

[0014] In a feasible implementation, the microlens array is arranged orthogonally, in a honeycomb arrangement, or in a random arrangement;

[0015] The microlens array includes a plurality of microlenses, and the numerical aperture NA of the microlenses is less than 1.

[0016] An optical anti-counterfeiting packaging product comprises a packaging substrate and any one of the above-mentioned optical anti-counterfeiting packaging films, wherein the packaging substrate is located on a side of the reflective layer away from the base material layer.

[0017] In a feasible implementation, the optical anti-counterfeiting packaging product further includes an adhesive layer, and the adhesive layer is located between the packaging substrate and the optical anti-counterfeiting packaging film.

[0018] In a feasible implementation, the optical anti-counterfeiting packaging product is a cigarette packaging box, a wine packaging box, a cosmetics packaging box, a medicine packaging box or a food packaging box.

[0019] In optical anti-counterfeiting packaging products employing this utility model's technical solution, the surface of the second microstructured layer in the optical anti-counterfeiting packaging film, away from the substrate layer, can be coated with glue, varnish, printed, or laminated. The combination of the reflective layer, the first microstructured layer, the substrate layer, and the second microstructured layer achieves a true-to-life 3D dynamic imaging effect, offering enhanced anti-counterfeiting performance. The use of a reflective layer and the ability to customize microlens array parameters make the product thinner and printable while maintaining a 3D dynamic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of an optical anti-counterfeiting packaging film according to one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a first microstructure layer, a substrate layer, and a second microstructure layer in an optical anti-counterfeiting packaging film according to one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of an optical anti-counterfeiting packaging product according to one embodiment of the present invention. DETAILED DESCRIPTION

[0023] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] See Figure 1 and Figure 2An optical anti-counterfeiting packaging film 100 according to one embodiment of the present invention includes a reflective layer 110, a first microstructure layer 120, a substrate layer 130, and a second microstructure layer 140, which are stacked in sequence. The first microstructure layer 120 includes at least one microlens array 121. The second microstructure layer 140 includes a micrographic array 141 corresponding to the microlens array 121. The micrographic array 141 includes a plurality of micrographic grooves 142, each of which is filled with ink 143. The term "several" refers to an indefinite number and can be one, two, or more than two. The present invention does not limit the ink 143; commonly used inks for forming micrographics in the art can be used.

[0027] In this embodiment of the optical anti-counterfeiting packaging film 100, the combination of the reflective layer 110, the first microstructure layer 120, the substrate layer 130, and the second microstructure layer 140 achieves a reflective 3D dynamic imaging effect, providing enhanced anti-counterfeiting performance. The use of the reflective layer 110 and the parameter design of the microlens array 121 make the product thinner and printable while maintaining a 3D dynamic effect.

[0028] In the optical anti-counterfeiting packaging film 100 of this embodiment, when the first microstructure layer 120 includes two or more groups of microlens arrays 121, the arrangement of different groups of microlens arrays 121 can be the same or different; correspondingly, the second microstructure layer 140 includes a micro-image array 141 corresponding to at least one group of microlens arrays 121. Preferably, two or more groups of microlens arrays 121 are arranged in a one-to-one correspondence with two or more groups of micro-image arrays 141.

[0029] In the optical anti-counterfeiting packaging film 100 of this embodiment, the first microstructure layer 120 having the microlens array 121 is located below the substrate layer 130. Therefore, the surface of the second microstructure layer 140 away from the substrate layer 130 can be glued, varnished, printed, laminated, etc., to avoid printing or laminating protection on the surface of the microlens array 121, which may cause the microlenses to not form clear images.

[0030] Based on the above embodiment, the thickness of the first microstructure layer 120 is 1 μm to 10 μm, the thickness of the substrate layer 130 is 16 μm to 100 μm, the thickness of the second microstructure layer 140 is 2 μm to 5 μm, and the thickness of the reflective layer 110 is 10 nm to 40 nm. Furthermore, the thickness of the first microstructure layer 120 may be, but is not limited to, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm, the thickness of the substrate layer 130 may be, but is not limited to, 16 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm or 100 μm, the thickness of the second microstructure layer 140 may be, but is not limited to, 2 μm, 3 μm, 4 μm or 5 μm, and the thickness of the reflective layer 110 may be, but is not limited to, 10 nm, 20 μm, 30 μm or 40 nm.

[0031] Based on the above embodiment, the particle size of ink 143 is smaller than the width of micro-image groove 142, and the particle size of ink 143 is 10 nm to 15 μm. Furthermore, the particle size of ink 143 can be, but is not limited to, 10 nm, 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, or 15 μm.

[0032] Based on the aforementioned embodiment, the optical anti-counterfeiting packaging film 100 further includes a varnish layer 150, which is located on the side of the second microstructure layer 140 away from the substrate layer 130. The varnish layer 150 is used to protect the graphic information from wear and tear, thereby improving the crease resistance, folding resistance, and penetration resistance of the packaging.

[0033] Based on the above embodiment, the optical anti-counterfeiting packaging film 100 further includes a printing layer 160, which is located on the side of the varnish layer 150 away from the substrate layer 130. The printing layer 160 can include information such as a pattern printed on the varnish layer 150 and can be designed accordingly according to the packaged product.

[0034] On the basis of the aforementioned embodiment, the optical anti-counterfeiting packaging film 100 further includes a coating layer 170, which is located on the side of the printing layer 160 away from the substrate layer 130. The coating layer 170 is made of polypropylene, polyester or other plastic films, and is used to protect graphic information from wear and tear, and to improve the crease resistance, folding resistance and penetration resistance of the packaging. For example, wine packaging coating is an important part of the post-processing technology of wine box packaging. It is achieved by covering the surface of the printed matter with polypropylene, polyester or other plastic films, and fixing it by heating, drying and pressing. The coating can improve the crease resistance, folding resistance and penetration resistance of the packaging; it can enhance the packaging's ability to resist dirt, grease and chemicals; it can reduce scratches or other damage to the packaging surface caused by friction or impact, thereby extending the service life of the packaging.

[0035] Based on the aforementioned embodiment, the first optical microstructure layer 120 further includes a relief microstructure 122. The relief microstructure 122 can, for example, produce a color or platinum relief optical effect, or other relief optical effects. Furthermore, the optical anti-counterfeiting packaging film 100 of the present invention can also include light and shadow microstructures to produce dynamic light and shadow effects, or other microstructures to produce other effects.

[0036] Based on the above embodiment, the reflective layer 110 is a metal reflective layer, which is used to reflect light, enhance the brightness, color, and glossiness of the surface of the structure, and form a reflective lens.

[0037] Based on the above embodiments, the microlens array 121 is arranged in an orthogonal pattern, a honeycomb pattern, or a random pattern. The present invention does not limit the arrangement of the microlenses in the microlens array 121.

[0038] Based on the aforementioned embodiment, the microlens array 121 includes a plurality of microlenses 123, each having a numerical aperture (NA) less than 1. In practice, the focal length of the microlenses determines the thickness of the integrated imaging film. The focal length of the microlenses is proportional to the radius of curvature of the sphere, meaning that reducing the focal length requires a simultaneous reduction in the aperture. This reduced aperture reduces the designability of the integrated imaging and reduces the 3D dynamic effect. In the optical anti-counterfeiting packaging film 100 of this embodiment, the numerical aperture (NA) of the reflective microlenses 123 is less than 1, which solves the aforementioned problem and ensures a 3D dynamic effect.

[0039] Specifically, the numerical aperture (NA) is the product of the refractive index (n) of the medium between the lens and the object being inspected and the sine of half the aperture angle (2α). This is expressed as follows: NA = n*sinα. The aperture angle, also known as the "lens mouth angle," is the angle between the object point on the lens' optical axis and the effective diameter of the objective's front lens. A larger aperture angle increases the amount of light entering the lens. It is directly proportional to the lens's effective diameter and inversely proportional to the distance from the focal point.

[0040] Assuming the microlens array 121 is arranged orthogonally, the aperture D of the microlenses 123 is 30 μm, the focal length F of the reflective microlenses 123 is 17 μm, and the NA = 0.99, the field of view can reach 90 degrees. A transmissive microlens with the same curvature radius has a focal length of 100 μm and a field of view of approximately 15 degrees. In comparison, the reflective microlenses 123 of this embodiment have a shorter focal length, resulting in a thinner integrated imaging product and a wider field of view for stereoscopic dynamic imaging.

[0041] In this embodiment of the optical anti-counterfeiting packaging film 100, after the micro-image array 141 is filled with ink, a varnish is applied to form a varnish layer 150 for protection. Because the microlens array 121 is beneath the base film layer 130, it is not affected by the varnish layer 150, nor by the printed layer 160 and the laminating layer 170 atop the varnish layer 150. This preserves the dynamic and depth-of-field effects of microlens imaging, achieving a true-to-life three-dimensional dynamic imaging effect, which is unique when combined with other conventional optical anti-counterfeiting features. Furthermore, because the micro-image array 141 is covered and cannot be separated by the varnish layer 150, it is difficult to imitate or copy, effectively protecting the intellectual property rights of the goods and preventing the emergence of counterfeit and substandard products.

[0042] In the optical anti-counterfeiting packaging film employing the technical solution of this utility model, the surface of the second microstructure layer, away from the substrate layer, can be coated with glue, varnish, printing, or lamination. The combination of the reflective layer, the first microstructure layer, the substrate layer, and the second microstructure layer achieves a true-to-life 3D dynamic imaging effect, offering enhanced anti-counterfeiting performance. The use of the reflective layer and the ability to customize the microlens array parameters make the product thinner and printable while maintaining a 3D dynamic effect.

[0043] See Figure 3 An optical anti-counterfeiting packaging product 200 according to one embodiment of the present invention includes a packaging substrate 210 and any of the above-mentioned optical anti-counterfeiting packaging films 100 . The packaging substrate 210 is located on a side of the reflective layer 110 away from the base material layer 130 .

[0044] Based on the aforementioned embodiment, the optical anti-counterfeiting packaging product 200 further includes an adhesive layer 220, which is located between the packaging substrate 210 and the optical anti-counterfeiting packaging film 100. The adhesive layer 220 is used to adhere the optical anti-counterfeiting packaging film 100 to the packaging substrate 210, forming a packaging product with various appearances and anti-counterfeiting effects.

[0045] Based on the above embodiment, the optical anti-counterfeiting packaging product 200 is a cigarette package, a wine package, a cosmetic package, a medicine package, or a food package. It is understood that the optical anti-counterfeiting packaging product 200 of the present invention is not limited thereto and can also be any product that can use the above optical anti-counterfeiting packaging film 100.

[0046] In optical anti-counterfeiting packaging products employing this utility model's technical solution, the surface of the second microstructured layer in the optical anti-counterfeiting packaging film, away from the substrate layer, can be coated with glue, varnish, printed, or laminated. The combination of the reflective layer, the first microstructured layer, the substrate layer, and the second microstructured layer achieves a true-to-life 3D dynamic imaging effect, offering enhanced anti-counterfeiting performance. The use of a reflective layer and the ability to customize microlens array parameters make the product thinner and printable while maintaining a 3D dynamic effect.

[0047] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An optical anti-counterfeiting packaging film, characterized in that: The optical anti-counterfeiting packaging film includes a reflective layer, a first microstructure layer, a substrate layer, and a second microstructure layer stacked in sequence. The first microstructure layer includes at least one group of microlens arrays. The second microstructure layer includes a micro-image array arranged corresponding to the microlens array. The micro-image array includes a plurality of micro-image grooves, and the micro-image grooves are filled with ink.

2. The optical anti-counterfeiting packaging film according to claim 1, characterized in that: The thickness of the first microstructure layer is 1 μm to 10 μm, the thickness of the substrate layer is 16 μm to 100 μm, the thickness of the second microstructure layer is 2 μm to 5 μm, and the thickness of the reflective layer is 10 nm to 40 nm; The particle size of the ink is smaller than the width of the micro-image groove, and the particle size of the ink is 10 nm to 15 μm.

3. The optical anti-counterfeiting packaging film according to claim 1, characterized in that: The optical anti-counterfeiting packaging film further includes a varnish layer, which is located on a side of the second microstructure layer away from the substrate layer.

4. The optical anti-counterfeiting packaging film according to claim 3, characterized in that: The optical anti-counterfeiting packaging film further comprises a printing layer, and the printing layer is located on a side of the varnish layer away from the substrate layer.

5. The optical anti-counterfeiting packaging film according to claim 4, characterized in that: The optical anti-counterfeiting packaging film further comprises a coating layer, and the coating layer is located on a side of the printing layer away from the substrate layer.

6. The optical anti-counterfeiting packaging film according to claim 1, characterized in that: The first microstructure layer further includes a relief microstructure or a light and shadow microstructure; The reflective layer is a metal reflective layer.

7. The optical anti-counterfeiting packaging film according to claim 1, characterized in that: The microlens array is arranged orthogonally, in a honeycomb pattern, or randomly; The microlens array includes a plurality of microlenses, and the numerical aperture NA of the microlenses is less than 1.

8. An optical anti-counterfeiting packaging product, characterized in that: The optical anti-counterfeiting packaging film comprises a packaging substrate and the optical anti-counterfeiting packaging film according to any one of claims 1 to 7, wherein the packaging substrate is located on a side of the reflective layer away from the substrate layer.

9. The optical anti-counterfeiting packaging product according to claim 8, characterized in that: The optical anti-counterfeiting packaging product further includes an adhesive layer, which is located between the packaging substrate and the optical anti-counterfeiting packaging film.

10. The optical anti-counterfeiting packaging product according to claim 8, characterized in that: The optical anti-counterfeiting packaging product is a cigarette packaging box, a wine packaging box, a cosmetics packaging box, a medicine packaging box or a food packaging box.

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