A multi-color three-dimensional dynamic image anti-counterfeiting card and its preparation method

Abstract

The present invention discloses a multi-color stereoscopic dynamic image anti-counterfeiting card and a preparation method thereof. The anti-counterfeiting card provided by the present invention comprises a base layer, a first endorsement layer arranged on one side of the base layer, a first composite layer arranged on the first endorsement layer, a second endorsement layer arranged on the other side of the base layer, and a second composite layer arranged on the second endorsement layer; the preparation method provided by the present invention prepares the first composite layer, prepares the second composite layer, heats and laminates the first composite layer, the first endorsement layer, the base layer, the second endorsement layer, and the second composite layer to obtain an anti-counterfeiting card that can be endorsed. The texture of the anti-counterfeiting card can achieve dynamic, embossed and other highly glossy multi-color stereoscopic dynamic image effects through precision photolithography, and has a good anti-counterfeiting effect; the double-sided arrangement of the anti-counterfeiting card has a compact and precise microstructure anti-counterfeiting effect, which can achieve more effective anti-counterfeiting and improve the expressiveness of the anti-counterfeiting card.

Description

[0001] This invention is a divisional application with an application date of 2022.05.20, application number 202210548852.9, and invention name "A precision microstructure presenting a three-dimensional relief image, and its preparation method and application." Technical Field

[0002] The invention relates to the field of precision microstructure design products, and in particular to a multi-color stereoscopic dynamic image-endorsable anti-counterfeiting certificate card and a preparation method thereof. Background Art

[0003] The commonly used method for printing in special fields such as magazines, product catalogs, packaging printing, banknotes, stamps and other securities, decorative materials, anti-counterfeiting cards, etc. is to transfer ink to the surface of the substrate through screen printing or gravure printing. In screen printing, the depth of color is achieved by different dot sizes. In gravure printing, the image part of the precision gravure is concave, and the degree of concave varies with the level of the image. The blank part of the precision gravure is raised and on the same plane. The light and dark levels of the printed picture are determined by the size and depth of the pits. If the pits are deeper, they contain more ink, and the ink layer left on the substrate after printing is thicker; on the contrary, if the pits are shallow, they contain less ink, and the ink layer left on the substrate after printing is thinner. The precision gravure of gravure printing is composed of pits corresponding to the original image and the surface of the precision gravure.

[0004] The existing gravure printing technology is limited by precision. The pit dot size is greater than 50μm, and the image is not very fine. The relief of the image is reflected by the color depth of the ink, which has limitations and cannot reflect the real three-dimensional sense. Moreover, since there is only one way of expression, the color depth, the expression effect is single.

[0005] Therefore, it is necessary to propose an improved solution to overcome the above problems. Summary of the invention

[0006] One of the purposes of the present invention is to provide an anti-counterfeiting certificate card with a multi-color three-dimensional dynamic image that can be signed, which can present a multi-color three-dimensional dynamic image.

[0007] The second object of the present invention is to provide a method for preparing an anti-counterfeiting card that can be signed with a multi-color three-dimensional dynamic image, wherein the anti-counterfeiting card prepared by the method can present a multi-color three-dimensional dynamic image.

[0008] According to one aspect of the present invention, the present invention provides a multi-color three-dimensional dynamic image endorseable anti-counterfeiting certificate card, comprising a base layer, a first endorsement layer arranged on one side of the base layer, a first composite layer arranged on the first endorsement layer, a second endorsement layer arranged on the other side of the base layer, and a second composite layer arranged on the second endorsement layer;

[0009] The first composite layer includes a first microstructure layer, on which a precision microstructure is arranged, the precision microstructure includes a plurality of micro-nano substructures, the micro-nano substructures are provided with grooves, and the grooves are filled with at least one color of ink; the period of the micro-nano substructures is arranged according to a preset rule, including arrangement according to the Fresnel rule, or arrangement according to the equal-width cutting projection rule; the micro-nano substructures may also include at least one inclined surface, and the inclined surface is used to reflect light to produce light and shadow effects; the ratio of the groove width on each of the micro-nano substructures to the period of the micro-nano substructure is K, and the ratio K of different micro-nano substructures is the same.

[0010] In one embodiment, the first composite layer includes a first base film layer, a first microstructure layer, a first coating layer and a first protective layer stacked in sequence, and the first base film layer is arranged on the first endorsement layer.

[0011] In one embodiment, the second composite layer includes a second base film layer and a second protective layer which are sequentially arranged, the second endorsement layer is arranged on the second base film layer, and the second endorsement layer is located between the base layer and the second base film layer.

[0012] In one embodiment, the second composite layer further includes a second microstructure layer and a second coating layer; the second microstructure layer and the second coating layer are both disposed between the second base film layer and the second protective layer, and the second coating layer is disposed on a side of the second microstructure layer close to the second protective layer;

[0013] The second microstructure layer is provided with a precision microstructure, which includes a plurality of micro-nano substructures, and the micro-nano substructure is provided with grooves, and the grooves are filled with at least one color of ink; or the precision microstructure includes a plurality of grooves and platform areas, and the grooves are filled with at least one color of ink.

[0014] In one embodiment, the material of the first microstructure layer is resin, and the resin is coated on the first base film layer;

[0015] The base layer includes one or more film layers, and the material of the base layer is a PC film layer or a PET film layer;

[0016] The first base film layer is a PC base film layer or a modified PET base film layer;

[0017] The material of the first endorsement layer is PC film or modified PET film;

[0018] The material of the second endorsement layer is PC film or modified PET film;

[0019] The first coating layer is an opaque metal layer or a transparent medium layer, the material of the opaque metal layer includes one or more of chromium, aluminum and copper, and the material of the transparent medium layer includes one or more of zinc sulfide, titanium dioxide and magnesium fluoride;

[0020] The first protective layer is bonded to the first coating layer, and the first protective layer is a resin layer with good bonding properties with the first coating layer.

[0021] In one embodiment, the material of the second microstructure layer is resin, and the resin is coated on the second base film layer;

[0022] The second base film layer is a PC base film layer or a modified PET base film layer;

[0023] The second coating layer is an opaque metal layer or a transparent medium layer. The material of the opaque metal layer includes one or more of chromium, aluminum and copper. The material of the transparent medium layer includes one or more of zinc sulfide, titanium dioxide and magnesium fluoride.

[0024] In one embodiment, multiple images and / or graphic characters are arranged on the first endorsement layer and / or the second endorsement layer, which supports real-time endorsement of multiple images and graphic characters, and the graphic characters include one or more of three-dimensional portraits, three-dimensional graphics, isotopic images, dynamic floating and sinking text graphics and two-dimensional codes;

[0025] A chip may be arranged in the base layer.

[0026] According to another aspect of the present invention, the present invention provides a method for preparing an anti-counterfeiting card that can be endorsed, comprising the following steps:

[0027] S1. Preparation of the first composite layer

[0028] A resin layer is coated on one side of the first base film layer, and a first microstructure layer is formed on the resin layer by transfer printing or gravure printing, wherein the micro-nano substructure of the first microstructure layer is provided with grooves, and the grooves are filled with ink; or the precision microstructure on the first microstructure layer includes a plurality of grooves and platform areas, and the grooves are filled with ink; vacuum coating is performed on the first microstructure layer to form a first coating layer; and a first protective layer is formed on the first coating layer to obtain a first composite layer;

[0029] S2. Preparation of the second composite layer

[0030] coating a second protective layer on the second base film layer;

[0031] S3. Heat and laminate the first composite layer, the first annotation layer, the base layer, the second annotation layer, and the second composite layer. The first base film layer in the first composite layer is arranged on the first annotation layer, and the second annotation layer is arranged on the second base film layer in the second composite layer.

[0032] In one embodiment, for step S2, the second composite layer further includes a second microstructure layer and a second coating layer, and the specific steps are as follows:

[0033] A resin layer is coated on the second base film layer, and a second microstructure layer is produced by transfer or gravure printing on the resin layer. The precision microstructure on the second microstructure layer includes a plurality of micro-nano substructures, and grooves are arranged on the micro-nano substructures, and the grooves are filled with ink, or the precision microstructure on the second microstructure layer includes a plurality of grooves and platform areas, and the grooves are filled with ink; then, a second coating layer is formed by vacuum coating on the second microstructure layer, and a second protective layer is produced by coating on the second coating layer to obtain a second composite layer.

[0034] In one embodiment, the step further includes step S4: S4, image signing is performed on the first endorsement layer and the second endorsement layer.

[0035] The beneficial effects of the present invention include: the anti-counterfeiting card of the present invention can be signed with a multi-color three-dimensional dynamic image, and the texture of the anti-counterfeiting card can achieve dynamic, embossed and other glossy multi-color three-dimensional dynamic image effects through precision photolithography, and has a good anti-counterfeiting effect; the double-sided anti-counterfeiting card is set with a compact and precise microstructure anti-counterfeiting effect, which can achieve more effective anti-counterfeiting and improve the expressiveness of the anti-counterfeiting card. The first composite layer, the first signing layer, the base layer, the second signing layer and the second composite layer are laminated in one piece, the process is simple and the stability is good, and the quality of the anti-counterfeiting card is excellent.

[0036] The multi-color three-dimensional dynamic image of the anti-counterfeiting card of the present embodiment is realized by an ultra-precision micro-concave printing. The method and precision of ultra-precision micro-concave printing are greatly different from those of existing concave printing. The precision of existing concave printing is generally around 50um, while the precision of ultra-precision micro-concave printing technology is in the scale range of 5 to 50um, with a large controllable range. The texture on the image can achieve dynamic, embossed and other highly glossy effects through precision photolithography. The production method of the present embodiment is to coat UV resin glue on a flexible film (i.e., a base film layer), and use a template with a precise microstructure to emboss 5 to 50 micron deep grooves on the surface of the UV resin glue, fill the grooves with color ink by scraping or coating, and wash off the protruding ink to make the micro-nano substructure show color, and the color and special effects are presented at the same time, which is essentially different from ordinary concave printing. The anti-counterfeiting card produced by this technology has better anti-counterfeiting effect, better expressiveness and excellent quality.

[0037] The precision microstructure is a UV-curable resin layer, which is beneficial for it not to deform during heating and pressurizing lamination. The first coating layer is an opaque metal layer or a transparent medium layer, which is used to protect the first microstructure layer and enhance the brightness; the second coating layer is an opaque metal layer or a transparent medium layer, which is used to protect the second microstructure layer and enhance the brightness; the first protective layer is preferably a resin layer with good bonding properties with the first coating layer, so that the anti-counterfeiting card has the functions of oil resistance, fingerprint resistance and scratch resistance.

[0038] For the precision microstructure, the three-dimensional relief effect is presented by arranging the period of the micro-nano substructure in the precision microstructure according to the Fresnel law, or the equal-width cutting projection law, etc.; the micro-nano substructure includes an inclined surface to present a dynamic optical effect; grooves are provided on the precision microstructure, and ink is filled in the grooves to present a colored effect; different inks are filled in different areas, or different inks are filled in multiple layers to present a colorful effect; finally, the three effects of color, dynamic light and shadow, and three-dimensional relief are combined on the precision microstructure; the width of the groove is less than 30μm, and the groove is filled with micro-nano-level ink, which is more delicate, so that the image presented is more delicate.

[0039] The method for preparing a precision microstructure is to set a structure opposite to the expected micro-precision structure on the template, and obtain an ultra-precision structure after transfer, cleaning, and curing. At the same time, the ink only exists in the grooves of the micro-nano structure, rather than covering the precision microstructure. The amount of ink used is small, which not only retains the three-dimensional relief effect and light and shadow effect of the micro-nano structure, but also makes the color more vivid. After cleaning, the method can also collect the washed ink and reuse it, which is low-carbon and environmentally friendly.

[0040] Another preparation method for precision microstructures is to attach ink to the template through an anilox roller, and fill the ink into the grooves while transferring the micro-nanostructure. This method is simpler, uses less ink, and is low-carbon and environmentally friendly. The ink is also filled in the grooves in a direction, which not only retains the three-dimensional relief effect and light and shadow effects of the micro-nanostructure, but also makes the color more vivid. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic cross-sectional view of a precision microstructure provided by the present invention in one embodiment;

[0042] Figure 2 A scanning electron microscope photograph of an embodiment of the precision microstructure of the present invention;

[0043] Figure 3a A schematic diagram of an embodiment of a method for arranging a plurality of micro-nano substructures in the present invention;

[0044] Figure 3b for Figure 3a A schematic cross-sectional view of a plurality of micro-nano substructures obtained by the arrangement method shown;

[0045] Figure 4a This is the first example of a form of the micro-nano substructure in the present invention;

[0046] Figure 4b This is a second example of a form of the micro-nano substructure in the present invention;

[0047] Figure 4c This is a third example of a form of the micro-nano substructure in the present invention;

[0048] Figure 4d This is a fourth example of a form of the micro-nano substructure in the present invention;

[0049] Figure 5a This is the first example of another form of the micro-nano substructure in the present invention;

[0050] Figure 5b This is a second example of another form of the micro-nano substructure in the present invention;

[0051] Figure 5c This is a third example of another form of the micro-nano substructure in the present invention;

[0052] Figure 5d This is a fourth example of another form of the micro-nano substructure in the present invention; Figure 6 is another example of the micro-nano substructure in the present invention, wherein the period is S and the groove width is W;

[0053] Figure 7 This is an example of filling different areas with different color inks in the present invention;

[0054] Figure 8 A schematic diagram of an embodiment of a precision microstructure including a coating layer according to the present invention;

[0055] Fig. 9 A schematic cross-sectional view of another embodiment of the precision microstructure provided by the present invention;

[0056] Fig.10a A schematic diagram of another embodiment of the method for arranging a plurality of micro-nano substructures in the present invention;

[0057] Fig.10b for Fig.10a A schematic cross-sectional view of a plurality of micro-nano substructures obtained by the arrangement method shown;

[0058] Fig.11 A schematic diagram of another embodiment of a precision microstructure including a coating layer in the present invention;

[0059] Fig.12 An example diagram of the same-direction stacking setup of two layers of precision microstructures;

[0060] Fig.13 An example diagram of a stacking setup of two layers of precision microstructures facing each other;

[0061] Fig.14 A schematic diagram of a process for preparing a precision microstructure presenting a three-dimensional relief image in one embodiment of the present invention;

[0062] Fig.15 for Fig.14 A schematic diagram of the process of the preparation method;

[0063] Fig.16 A schematic diagram of a process for preparing a precision microstructure presenting a three-dimensional relief image in one embodiment of the present invention;

[0064] Fig.17 is a schematic diagram of a preparation system in one embodiment of the present invention;

[0065] Fig.18 It is a schematic diagram of the structure of the hot stamping film shown in the present invention;

[0066] Fig.19 for Fig.18 A schematic diagram of the structure of the hot stamping film ink and the positioning mark;

[0067] Fig. 20 It is a schematic diagram of the structure of the transfer film shown in the present invention;

[0068] Fig.21 It is a schematic diagram of the structure of the composite paper shown in the present invention;

[0069] Fig. 22 It is a schematic diagram of the structure of the transfer paper shown in the present invention;

[0070] Fig.23 It is a structural schematic diagram of an embodiment of an anti-counterfeiting card shown in the present invention;

[0071] Fig.24 It is a structural schematic diagram of another embodiment of the anti-counterfeiting card shown in the present invention;

[0072] Fig.25 It is a structural schematic diagram of a first embodiment of the decorative texture shown in the present invention;

[0073] Fig.26 It is a structural schematic diagram of a second embodiment of the decorative texture shown in the present invention;

[0074] Fig. 27 It is a structural schematic diagram of a third embodiment of the decorative texture shown in the present invention;

[0075] Fig.28 It is a structural schematic diagram of a fourth embodiment of the decorative texture shown in the present invention;

[0076] Fig.29 It is a structural schematic diagram of a fifth embodiment of the decorative texture shown in the present invention;

[0077] Fig.30This is a rendering of the decorative texture shown in the present invention in one embodiment. DETAILED DESCRIPTION

[0078] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0079] like Figure 1 As shown, the precision microstructure 1 includes a plurality of micro-nano substructures 2, and the periods of the plurality of micro-nano substructures 2 are arranged according to a preset rule to present a three-dimensional relief effect; at least one groove 3 is provided on the micro-nano substructure 2, and the groove includes at least two opposite side walls (a first side wall 31 and a second side wall 32) and a bottom 33, and ink 4 is provided in the groove to present a color effect.

[0080] Figure 2 1 is a scanning electron microscope photo of an embodiment of the present invention. It can be seen that the precision microstructure 1 is a continuous line. In other embodiments, the precision microstructure 1 can also be a discontinuous line.

[0081] like Figure 3a This is an embodiment of the arrangement method of multiple micro-nano substructures 2 in the present invention. Taking the spherical surface as an example, the height of the spherical surface model is L. According to the Fresnel law, the spherical surface is divided into layers with equal heights, and each layer has a height of L1. After projection, continuous annular lines are obtained. Each annular line is a micro-nano substructure 2. Multiple micro-nano substructures 2 are arranged on a plane according to the Fresnel law, thereby presenting a three-dimensional relief effect. Figure 3b 2 is a cross-sectional view of the micro-nano substructure 2 in this embodiment. The cross section of the micro-nano substructure in this embodiment is arc-shaped, thereby presenting a dynamic light and shadow effect. A groove 3 is provided on the micro-nano substructure 2, and ink 4 is filled in the groove 3 to present color. Therefore, this precise microstructure presents a colored dynamic light and shadow and a three-dimensional relief effect. In other embodiments, it can also be arranged according to the equal-width cutting projection rule to present a three-dimensional relief effect.

[0082] In other embodiments, other images may be presented in the form of a three-dimensional relief effect, such as three-dimensional images of animals, people, plants, etc., but the present invention is not limited thereto.

[0083] In some embodiments, Figures 4a-4d As shown, the micro-nano structure 2 includes an inclined surface that can reflect light, thereby presenting a dynamic light and shadow effect. Figure 4a The micro-nano substructure 2 includes two inclined surfaces, and the cross section is an arc. Figure 4b The micro-nano substructure 2 includes an inclined surface with a triangular cross section. Figure 4cThe micro-nano substructure 2 includes an inclined surface with an arc-shaped cross section. Figure 4d The micro-nano substructure 2 includes an inclined surface with a stepped cross section; the groove 3 is arranged in the middle of the inclined surface of the micro-nano substructure 2, the groove 3 is filled with ink, and the bottom of the groove 3 is not on the same plane as the bottom of the micro-nano substructure 2.

[0084] In other embodiments, Figure 5a-5d As shown, the groove 3 is arranged at the edge of the inclined surface of the micro-nano substructure 2 , the groove 3 is filled with ink, and the bottom of the groove 3 and the bottom of the micro-nano substructure 2 are on the same plane.

[0085] Figures 4a-4d and Figure 5a-5d In the embodiment shown, the widths of the grooves 3 on different micro-nano structures 2 are the same, ranging from 50nm to 30μm, and the depths of the grooves 3 range from 50nm to 50μm; the particle size of the ink is smaller than the width of the groove 3, ranging from 10nm to 15μm.

[0086] In some embodiments, Figure 6 As shown, the period of the micro-nano substructure 2 is S, and the width of the groove on the micro-nano substructure 2 is W. The period S of different micro-nano substructures 2 may be different, but the ratio K of the width W of the groove 3 on different micro-nano substructures 2 to the period S of the micro-nano substructure 2 is the same.

[0087] In some embodiments, Figure 7 As shown, different inks are filled in the grooves 3 of different micro-nano substructures 2. The grooves 3 of all micro-nano substructures 2 in region A are filled with the same ink, and the grooves 3 of all micro-nano substructures 2 in region B are filled with another same ink, thereby presenting a colorful effect. In other embodiments, there may be more regions filled with more different colors.

[0088] In some embodiments, Figure 8 As shown, a conformal coating layer 401 is disposed on the plurality of micro-nano sub-structures, the grooves on the coating layer 401 correspond one-to-one to the grooves on the micro-nano sub-structures 2, and the ink 4 is filled in the grooves on the coating layer.

[0089] like Fig. 9A precision microstructure 1 shown includes a plurality of grooves 3 and a platform area 5 connected thereto. The periods of the plurality of grooves 3 are arranged according to a preset rule to present a three-dimensional relief effect. The grooves 3 include at least two opposite side walls (a first side wall 31, a second side wall 32) and a bottom 33. Ink 4 is arranged in the grooves 3 to present a color effect. The grooves 3 are continuous and / or discontinuous linear shapes. The width W of the grooves 3 ranges from 50nm to 30μm, and the depth h of the grooves 3 ranges from 50nm to 50μm. The particle size of the ink is smaller than the width of the grooves 3, and the particle size of the ink ranges from 10nm to 15μm. The widths of different grooves 3 are the same, or for different grooves 3, the ratio of the width W of the grooves 3 to the period S of the grooves 3 is the same. Different grooves 3 can be filled with the same ink or different inks, thereby presenting a color effect.

[0090] In some embodiments, the period of the groove 3 is S, the width of the groove 3 is W, the ratio of the width W of the groove 3 to the period S of the groove 3 is K, and the K value on different grooves 3 is the same.

[0091] like Fig.10a This is an embodiment of a method for arranging a plurality of grooves 3 of a precision microstructure 1 of the present invention. Taking the final three-dimensional relief effect as a spherical surface as an example, the height of the spherical surface is L. According to the Fresnel law, the spherical surface is layered with equal heights, and the layer height is L1. Then, continuous annular lines are obtained, and each annular line is a groove 3. Fig.10b The cross-sectional view of the precision microstructure 1 in this embodiment includes a plurality of grooves 3 and a platform area 5 connected thereto. The grooves 3 are filled with ink 4 to present colors. Therefore, this precision microstructure presents a colored three-dimensional relief effect; in other embodiments, it can also be arranged according to the equal width cutting projection rule to present a three-dimensional relief effect. In other embodiments, it can also present a three-dimensional relief effect of other images, such as three-dimensional images of animals, people, plants, etc., but the present invention is not limited thereto.

[0092] In some embodiments, Fig.11 As shown, a conformal coating layer 401 is disposed on the plurality of grooves and platform areas 5 , and the grooves of the coating layer 401 are filled with ink 4 .

[0093] In some embodiments, Fig.12 As shown, it includes two layers of precision microstructures 1, which are stacked in the same direction. Different inks are filled in the grooves of the two layers of precision microstructures to present a colorful effect. In some other embodiments, more layers of precision microstructures may be included.

[0094] In some embodiments, Fig.13As shown, it comprises two layers of precision microstructures 1, the two layers of precision microstructures are stacked opposite to each other, and the grooves of the two layers of precision microstructures are filled with different inks to present a color effect; in some other embodiments, more layers of precision microstructures may be included, such as Figures 4a-4d , Figure 5a-5d and Fig. 9 , but it is not limited to this.

[0095] When two or more layers of precision microstructures are stacked, at least one intermediate layer may be disposed between the layers. The intermediate layer may be a substrate layer, an adhesive layer, a dielectric layer or a coating layer, but is not limited thereto.

[0096] The precision microstructure may be a whole including a polymer film substrate, or a single layer, and the material of the precision microstructure is a curable material such as UV glue, thermal curing glue, etc.

[0097] The precision microstructure may also be covered with a protective layer to protect the precision microstructure from being worn during use.

[0098] Fig.14 The figure is a schematic flow chart of a method for preparing a precise microstructure presenting a three-dimensional relief image in one embodiment of the present invention. Fig.15 for Fig.14 Schematic diagram of the preparation method.

[0099] Combination Fig.14 and Fig.15 , a method for preparing a precision microstructure presenting a three-dimensional relief image, comprising:

[0100] S1, providing a template 110, wherein the template 110 has an inverted microstructure;

[0101] S2: providing a substrate, transferring the reverse microstructure on the template 110 to the substrate, and curing;

[0102] S3: filling the transferred side of the substrate with ink 130;

[0103] S4: cleaning the ink-filled side of the substrate to obtain a precision microstructure 1 filled with ink; wherein in S1, the reverse microstructure on the template 110 corresponds to the expected microstructure concave-convex part not filled with ink, specifically, the convex part on the reverse microstructure corresponds to the concave part on the microstructure,

[0104] The groove part on the reverse plate corresponds to the raised part on the microstructure.

[0105] Fig.15 The reverse microstructure and precision microstructure 1 are only schematic. The actual structure of the precision microstructure 1 is shown in Figures 4a-4d , Figure 5a-5d and Fig. 9, but it is not limited to this.

[0106] In one embodiment, between step S2 and step S3 , conformal coating is further performed to obtain a coating layer, and the grooves on the coating layer correspond one-to-one to the grooves on the precision microstructure 1 .

[0107] In one embodiment, the precision microstructure can be transferred to the substrate all at once, and then one side of the transfer can be filled with an ink to present a color; in other embodiments, different inks can be filled in different areas to present a colorful effect.

[0108] In one embodiment, after step S4, that is, curing, S2-S4 can be repeated on the side where the precision microstructure has been embossed or on the side away from the precision microstructure, and then the precision microstructure is transferred, filled with ink, and cleaned. The ink in the groove on the precision microstructure is retained to form a multi-layer precision microstructure. Different inks are filled in different layers to present a color effect.

[0109] In another embodiment, in step S4, that is, after curing, the precision microstructure can be transferred and cured on the side of the substrate away from the precision microstructure, filled with ink, cleaned, and the ink in the groove on the precision microstructure is retained to form a double-sided precision microstructure. Different inks are filled on the opposite side to present a color effect.

[0110] The substrate is a polymer film coated with UV glue, or a UV glue layer, a thermal curing glue or other curable materials.

[0111] The preparation method of the template 110 includes: designing a three-dimensional relief image; pre-processing the image according to the Fresnel law or equal-height cutting projection to obtain a periodic grayscale image; providing a photoresist plate, photolithography the periodic grayscale image, obtaining a micro-nano structure with an inclined surface on the photoresist plate, and then photolithography grooves on the micro-nano structure; replicating the obtained photoresist plate to obtain the template 110.

[0112] In another embodiment, the preparation method of the template 110 includes: designing a three-dimensional relief image; and pre-processing the image according to the Fresnel law or equal-height cutting projection to obtain a periodic grayscale image; taking a certain width of the periodic grayscale image within a period as the part to be photolithographic, and the remaining part within the period as the non-photolithographic part, to obtain a periodic binary image; providing a photoresist plate, photolithographing the periodic binary image, and obtaining grooves on the photoresist plate; and replicating the obtained photoresist plate to obtain the template 110.

[0113] Fig.16 The figure is a schematic flow chart of a method for preparing a precise microstructure presenting a three-dimensional relief image in one embodiment of the present invention. Fig.172 is a schematic diagram of a preparation system in the present invention, wherein the preparation system includes an embossing roller 210 , a template 220 , a substrate 230 , an anilox roller 240 , an ink tank 250 and a curing machine 260 .

[0114] Combination Fig.16 and Fig.17 , a method for preparing a precision microstructure presenting a three-dimensional relief image, comprising:

[0115] S11: providing a template 220, wherein the template has a reverse plate precision microstructure;

[0116] S21: Using the anilox roller 240 to attach the ink to the template 220;

[0117] S31: providing a substrate 230, and transferring the reverse plate precision microstructure with ink attached to the template 220 onto the surface of the substrate 230;

[0118] S41: Curing;

[0119] In S11, the reverse microstructure on the template 220 corresponds to the expected microstructure protrusions and depressions that are not filled with ink. Specifically, the raised portion on the reverse plate corresponds to the groove portion on the microstructure, and the groove portion on the reverse plate corresponds to the raised portion on the microstructure.

[0120] The material of the template 220 is at least one of metal, glass, rubber, plastic or photosensitive resin, and there is a precise microstructure on the template. Fig.15 The template 220 shown above is for illustration only.

[0121] There is at least one anilox roller 240 , and the anilox roller 240 adheres the ink in the ink tank 250 to the stencil 220 .

[0122] The stencil 220 transfers the ink and structure onto the surface of the substrate 230 under the pressure of the embossing roller 210 .

[0123] The curing machine 260 cures the transferred substrate 230 to obtain a precise microstructure 1 filled with ink.

[0124] Fig.17 The inverse microstructure on the template 220 is only schematic.

[0125] The preparation system is only one of the various systems used in the method of the present invention, and the method is not limited thereto.

[0126] In one embodiment, between step S11 and step S21 , conformal coating is further performed.

[0127] In other embodiments, steps S11 to S41 may be repeated to realize positioning transfer of precision microstructures of different inks on one layer, or preparation of double-sided precision microstructures, or preparation of multi-layer precision microstructures to present monochrome or color effects.

[0128] The preparation method of template 220 includes: designing a three-dimensional relief image; preprocessing the image according to the Fresnel law or equal-height cutting projection to obtain a periodic grayscale image; providing a photoresist plate, photolithography the periodic grayscale image, obtaining a micro-nano structure with an inclined surface on the photoresist plate, and then photolithography grooves on the micro-nano structure; replicating the obtained photoresist plate to obtain template 220.

[0129] In another embodiment, the preparation method of template 220 includes: designing a three-dimensional relief image; and pre-processing the image according to the Fresnel law or equal-height cutting projection to obtain a periodic grayscale image; taking a certain width of the periodic grayscale image within a period as the part to be photolithographic, and the remaining part within the period as the non-photolithographic part, to obtain a periodic binary image; providing a photoresist plate, photolithographing the periodic binary image, and obtaining grooves on the photoresist plate; and replicating the obtained photoresist plate to obtain template 220.

[0130] According to another aspect of the present invention, the precision microstructure is mainly used in packaging film, packaging paper, decorative texture, clothing, anti-counterfeiting card or plastic banknote, etc. The following is a specific application of the precision microstructure. Of course, the pattern, material, thickness or other parameters of the precision structure described in the above scheme on different application products can be the same or different.

[0131] Hot Stamping Film

[0132] See also Fig.18 , Fig.18 Schematic diagram of the structure of the hot stamping film shown in the present invention. The hot stamping film of one embodiment of the present invention includes a base film layer 6, a release layer 7, a precision microstructure layer 8, a dielectric layer 9 and a hot melt adhesive layer 10 arranged in sequence from top to bottom.

[0133] In one embodiment, the precision microstructure layer 8 is provided with a precision microstructure on the surface away from the release layer 7, and the precision microstructure includes a plurality of micro-nano substructures, and the periods of the plurality of micro-nano substructures are arranged according to a preset rule to present a three-dimensional relief effect; at least one groove is provided on the micro-nano substructure, and the groove includes at least two opposite side walls and a bottom, and ink 811 is provided in the groove to present a color effect.

[0134] In another embodiment, a precision microstructure is provided on the precision microstructure layer 8, and the precision microstructure includes a plurality of grooves and a platform area connected thereto, and the periods of the plurality of grooves are arranged according to a preset rule to present a three-dimensional relief effect; the groove includes at least two opposite side walls and a bottom, and ink 811 is provided in the groove to present a color effect.

[0135] Preferably, the ink 811 is a nano-ink, which is partially or fully disposed in the groove of the micro-nano substructure by transfer printing or gravure printing, and the particle size of the nano-ink is smaller than the width of the groove on the micro-nano substructure. Fig.19 The hot stamping film has a positioning color mark 812, and the positioning color mark 812 is located on both sides of the precision microstructure layer 8. The positioning color mark 812 facilitates the hot stamping process to identify the hot stamping.

[0136] Fig.18 and Fig.19 The precision microstructure layer 8 in FIG. 8 is only schematic. The actual structure of the precision microstructure is shown in FIG. Figures 4a-4d , Figure 5a-5d and Fig. 9 , but it is not limited to this.

[0137] In this embodiment, the dielectric layer 9 is metal aluminum. Of course, in other embodiments, it can also be a metal material such as metal chromium or a transparent medium such as zinc sulfide and magnesium fluoride. The base film layer 6 is preferably a PET film layer. The release layer 7 facilitates the peeling of the precision microstructure layer 8 and the base film layer 6. The release layer 7 can be replaced by the base film layer 6 with a release effect or the precision microstructure layer 8 with a release effect.

[0138] The thickness of the base film layer 6, the release layer 7, the precision microstructure layer 8 and the dielectric layer 9 can be selected according to actual conditions. Preferably, the thickness of the base film layer 6 is 12-23 μm, the thickness of the release layer 7 is 1-10 μm, the thickness of the precision microstructure layer 8 is 1-10 μm, and the thickness of the dielectric layer 9 is 10-50 nm.

[0139] One embodiment of the preparation method of the hot stamping film of the present embodiment is as follows: first, a release layer 7 is coated on the base film layer 6 of the PET film layer, or the release layer 7 may not be coated, and a base film layer 6 with a release effect or a precision microstructure layer 8 with a release effect may be used. Then, a transparent coating is coated on the release layer 7, and a plurality of micro-nano substructures are made by transfer printing or gravure printing and solidified. There are grooves on the micro-nano substructures, and nano ink is positioned and filled in the grooves, or the ink is coated and cleaned so that the nano ink is only filled in the grooves. Then, a medium layer 9 is vacuum evaporated, and the medium layer 9 can highlight the gradient or relief effect. Finally, a hot melt adhesive layer 10 is coated to obtain the hot stamping film of the present embodiment, and the above layers constitute the composite layer of the hot stamping film.

[0140] Another embodiment of the preparation method is that first, a release layer 7 is coated on the base film layer 6 of the PET film layer, or the release layer 7 may not be coated, and a base film layer 6 with a release effect or a precision microstructure layer 8 with a release effect may be used. Then, a transparent coating is coated on the release layer 7, and a plurality of grooves and platforms connected thereto are made by transfer or gravure printing and solidified, and nano ink is positioned and filled in the grooves, or the ink is coated and cleaned so that the nano ink is only filled in the grooves. Then, a medium layer 9 is vacuum evaporated, and the medium layer 9 can highlight the gradient or relief effect. Finally, a hot melt adhesive layer 10 is coated to obtain the hot stamping film of this embodiment, and the above layers constitute a composite layer of the hot stamping film.

[0141] The production and printing of hot stamping film are completed in one step, without the need for two steps, which greatly improves production efficiency and saves production costs.

[0142] Transfer film

[0143] See also Fig. 20 A transfer film of an embodiment of the present invention includes a base film layer 11, a precision microstructure layer 12 and a dielectric layer 13 arranged in sequence from top to bottom. A precision microstructure for forming a graphic area is arranged on the surface of the precision microstructure layer 12 away from the base film layer 11. The precision microstructure includes a plurality of micro-nano substructures. A groove is arranged on the micro-nano substructure, and the groove is filled with ink 122.

[0144] In another embodiment, a precision microstructure for forming a graphic area is provided on the surface of the precision microstructure layer 12 away from the base film layer 11 , and the precision microstructure includes a plurality of grooves and platforms, and the grooves are filled with ink 122 .

[0145] In this embodiment, a base film layer 11 with a release effect or a precision microstructure layer 12 with a release effect is used. Fig. 20 The precision microstructure layer 12 in FIG. 1 is only schematic. The actual structure of the precision microstructure is shown in FIG. Figures 4a-4d , Figure 5a-5d and Fig. 9 , but it is not limited to this.

[0146] The parameters and preparation methods of the base film layer 11 , the precision microstructure layer 12 and the dielectric layer 13 are the same as those in the hot stamping film embodiment, and a transfer film of a composite layer is obtained, which will not be described in detail here.

[0147] Composite paper

[0148] See also Fig.21A composite paper according to an embodiment of the present invention comprises a base film layer 14, a precision microstructure layer 15, a medium layer 16, a hot melt adhesive layer 17 and a bottom paper layer 18 arranged in sequence from top to bottom. The precision microstructure layer 15 is provided with a precision microstructure for forming a graphic area on a surface away from the base film layer 14. The precision microstructure comprises a plurality of micro-nano substructures. The micro-nano substructures are provided with grooves, and the grooves are filled with ink 152.

[0149] In another embodiment, the precision microstructure layer 15 is provided with a precision microstructure for forming a graphic area on the surface away from the base film layer 14 , and the precision microstructure includes a plurality of grooves and platform areas connected thereto, and the grooves are filled with ink 152 .

[0150] In other embodiments, a base film layer 14 with a release effect or a precision microstructure layer 15 with a release effect may be used. The parameters and preparation methods of the base film layer 14, the precision microstructure layer 15 and the dielectric layer 16 are the same as those in the hot stamping film embodiment, and are not described in detail here. After the base film layer 14, the precision microstructure layer 15 and the dielectric layer 16 are prepared, they are compounded with a roll of white cardboard (bottom paper layer 18) coated with glue (hot melt adhesive layer 17) to obtain the composite paper of this embodiment, and the above layers constitute the composite layer of the composite paper. Fig.21 The precision microstructure on the precision microstructure layer 15 is only schematic. The actual structure of the precision microstructure is shown in FIG. Figures 4a-4d , Figure 5a-5d and Fig. 9 , but it is not limited to this.

[0151] Transfer paper

[0152] See also Fig. 22 The present invention provides a transfer paper of an embodiment, which includes a precision microstructure layer 19, a medium layer 20, a hot melt adhesive layer 21 and a base paper layer 22 arranged in sequence from top to bottom, and a precision microstructure is arranged on the lower surface of the precision microstructure layer 19, and the precision microstructure includes a plurality of micro-nano substructures, and grooves are arranged on the micro-nano substructure, and the grooves are filled with ink 192.

[0153] In another embodiment, a precision microstructure is disposed on the lower surface of the precision microstructure layer 19 . The precision microstructure includes a plurality of grooves and platform areas, and the grooves are filled with ink 192 .

[0154] In other embodiments, a precision microstructure layer 19 with a release effect may also be used. The parameters and preparation methods of the precision microstructure layer 19 and the medium layer 20 are the same as those of the hot stamping film embodiment, and the preparation methods of the hot melt adhesive layer 21 and the base paper layer 22 are the same as those of the composite paper embodiment, which will not be described in detail here. Fig. 20 The precision microstructure layer 19 is only schematic. The actual structure of the precision microstructure is shown in FIG. Figures 4a-4d , Figure 5a-5d and Fig. 9 , but it is not limited to this.

[0155] To sum up: the hot stamping film, transfer film, composite paper and transfer paper are provided with precise microstructures, and the precise microstructures present a three-dimensional relief effect; the micro-nano substructure includes an inclined surface, presenting a dynamic optical effect; grooves are provided on the precise microstructure, and ink is filled in the grooves to present a colored effect; different inks are filled in different areas, or different inks are filled in multiple layers to present a colorful effect; finally, the three effects of color, dynamic light and shadow, and three-dimensional relief are combined on the precise microstructure; the width of the groove is less than 30μm, and the groove is filled with micro-nano-level ink, which is more delicate and presents a more delicate image.

[0156] At the same time, since the ink is only filled in the grooves, the use of ink is reduced, which is more environmentally friendly; and there is no need for subsequent printing, which reduces the process steps and reduces costs.

[0157] Anti-counterfeiting card

[0158] See also Figure 23-24 The multi-color three-dimensional dynamic image-endorsable anti-counterfeiting certificate card provided by the present invention includes a base layer, a first endorsement layer arranged on one side of the base layer, a first composite layer arranged on the first endorsement layer, a second endorsement layer arranged on the other side of the base layer, and a second composite layer arranged on the second endorsement layer.

[0159] In one embodiment, Fig.23 As shown, the anti-counterfeiting card includes a first composite layer 23, a first endorsement layer 24, a base layer 25, a second endorsement layer 26 and a second composite layer 27 which are stacked in sequence from top to bottom. The first composite layer 23 includes a first base film layer 231, a first microstructure layer 232, a first coating layer 233 and a first protective layer 234 which are stacked in sequence, and the first base film layer 231 is arranged on the first endorsement layer 24. A precision microstructure is arranged on the first microstructure layer 232, and the precision microstructure includes a plurality of micro-nano substructures, and a groove is arranged on the micro-nano substructure, and the groove is filled with at least one color of ink; or the precision microstructure includes a plurality of grooves and a platform area, and the groove is filled with at least one color of ink; the second composite layer 27 includes a second base film layer 271 and a second protective layer 272 which are arranged in sequence, and the second endorsement layer 26 is arranged on the second base film layer 271, and the second endorsement layer 26 is located between the base layer 25 and the second base film layer 271.

[0160] In another embodiment, Fig.24 As shown, Fig.23The difference of the embodiment shown is that the second composite layer 27 includes a second base film layer 271, a second microstructure layer 273, a second coating layer 274, and a second protective layer 272 arranged in sequence. The second microstructure layer 273 is provided with a precision microstructure, the precision microstructure includes a plurality of micro-nano substructures, the micro-nano substructure is provided with grooves, and the grooves are filled with at least one color of ink; or the precision microstructure includes a plurality of grooves and a platform area, and the grooves are filled with at least one color of ink.

[0161] Fig.23 , Fig.24 The first microstructure layer 232 and the second microstructure layer 273 are only schematic. The actual structure of the precision microstructures on the first microstructure layer 232 and the second microstructure layer 273 is shown in FIG. Figures 4a-4d , Figure 5a-5d and Fig. 9 , but it is not limited to this.

[0162] In an embodiment of the anti-counterfeiting card, the material of the first microstructure layer and the second microstructure layer is resin, which is coated on the base film layer. The precision microstructure is preferably a resin with good bonding properties with the base film layer. More preferably, the precision microstructure is a UV-cured resin layer, which is beneficial for it not to deform during heating and pressurizing lamination.

[0163] In an embodiment of the anti-counterfeiting card, the base layer includes one or more film layers, and the material of the base layer is preferably a PC film layer or a PET film layer, and a chip can also be arranged in the base layer. The first base film layer is preferably a PC base film layer or a modified PET base film layer, and the second base film layer is preferably a PC base film layer or a modified PET base film layer. The material of the first endorsement layer is a PC film or a modified PET film, and the material of the second endorsement layer is a PC film or a modified PET film. Multiple images and / or graphic characters are arranged on the first endorsement layer and / or the second endorsement layer, which supports real-time endorsement of multiple images and graphic characters, and the graphic characters include one or more of three-dimensional portraits, three-dimensional graphics, isotopic images, dynamic floating and sinking text graphics and two-dimensional codes. The first coating layer is an opaque metal layer or a transparent medium layer, and the first coating layer is used to protect the first microstructure layer and enhance the brightness; the material of the opaque metal layer includes one or more of chromium, aluminum and copper, and the material of the transparent medium layer includes one or more of zinc sulfide, titanium dioxide and magnesium fluoride. The second coating layer is an opaque metal layer or a transparent medium layer, and the second coating layer is used to protect the second microstructure layer and enhance the brightness; the material of the opaque metal layer includes one or more of chromium, aluminum and copper, and the material of the transparent medium layer includes one or more of zinc sulfide, titanium dioxide and magnesium fluoride. The first protective layer is preferably bonded to the first coating layer, and the first protective layer is preferably a resin layer with good bonding properties with the first coating layer, so that the anti-counterfeiting card has the functions of oil resistance, fingerprint resistance and scratch resistance.

[0164] In one embodiment, a method for preparing an anti-counterfeiting card includes:

[0165] Step 1: Prepare the first composite layer. Specifically, first, a resin layer (UV curing resin layer) is coated on one side of the first base film layer 231, and a first microstructure layer 232 is produced by transfer printing or gravure printing on the resin layer. The first microstructure layer 232 has a precision microstructure, which includes a plurality of micro-nano substructures, and grooves are provided on the micro-nano substructures, and the grooves are filled with ink; or the precision microstructure on the first microstructure layer 232 includes a plurality of grooves and platform areas, and the grooves are filled with ink; vacuum coating is performed on the first microstructure layer 232 to form a first coating layer 233; a first protective layer 234 is coated on the first coating layer 233 to obtain a first composite layer.

[0166] Step 2: Prepare the second composite layer.

[0167] The preparation of the second composite layer includes: coating a second protective layer 272 on the second base film layer 271 .

[0168] Alternatively, a resin layer is coated on the second base film layer 271, and a second microstructure layer 273 is produced by transfer or gravure printing on the resin layer, wherein the precision microstructure on the second microstructure layer 273 includes a plurality of micro-nano substructures, and grooves are provided on the micro-nano substructures, and the grooves are filled with ink, or the precision microstructure on the second microstructure layer 273 includes a plurality of grooves and platform areas, and the grooves are filled with ink; then, a second coating layer 274 is formed by vacuum coating on the second microstructure layer 273, and a second protective layer 272 is coated on the second coating layer 274 to obtain a second composite layer 27.

[0169] Step 3: Heat and laminate the first composite layer 23 , the first endorsement layer 24 , the base layer 25 , the second endorsement layer 26 , and the second composite layer 27 . The first base film layer 231 in the first composite layer 23 is arranged on the first endorsement layer 24 , and the second endorsement layer 26 is arranged on the second base film layer 271 in the second composite layer 27 .

[0170] The method may further include step 4: performing image signing on the first endorsement layer 24 and the second endorsement layer 26 according to real-time needs.

[0171] Step 4 is not essential and may not be included in other embodiments.

[0172] The texture of the anti-counterfeiting card can achieve dynamic, embossed and other glossy multi-color three-dimensional dynamic image effects through precision photolithography, and has a good anti-counterfeiting effect; the double-sided anti-counterfeiting card is set with a compact and precise microstructure anti-counterfeiting effect, which can achieve more effective anti-counterfeiting and improve the expressiveness of the anti-counterfeiting card. The first composite layer 23, the first endorsement layer 24, the base layer 25, the second endorsement layer 26 and the second composite layer 27 are laminated in one piece, the process is simple and stable, and the quality of the anti-counterfeiting card is excellent.

[0173] The multi-color three-dimensional dynamic image of the anti-counterfeiting card of the present embodiment is realized by an ultra-precision micro-concave printing. The method and precision of ultra-precision micro-concave printing are greatly different from those of existing concave printing. The precision of existing concave printing is generally around 50um, while the precision of ultra-precision micro-concave printing technology is in the scale range of 5 to 50um, with a large controllable range. The texture on the image can achieve dynamic, embossed and other highly glossy effects through precision photolithography. The production method of the present embodiment is to coat UV resin glue on a flexible film (i.e., a base film layer), and use a template with a precise microstructure to emboss 5 to 50 micron deep grooves on the surface of the UV resin glue, fill the grooves with color ink by scraping or coating, and wash off the protruding ink to make the micro-nano substructure show color, and the color and special effects are presented at the same time, which is essentially different from ordinary concave printing. The anti-counterfeiting card produced by this technology has better anti-counterfeiting effect, better expressiveness and excellent quality.

[0174] Decorative texture

[0175] Decorative textures can be used in home appliances, mobile phone back panels, cosmetic top covers or car decorations.

[0176] See also Figure 25-29 , Figure 25-29 It is a schematic structural diagram of different embodiments of the decorative texture shown in the present invention. The decorative texture provided by the present invention includes a base layer and at least one composite layer arranged on the base layer, and the at least one composite layer includes a precision microstructure.

[0177] like Fig.25 As shown, the present invention provides a decorative texture structure of a first embodiment, the decorative texture structure includes a base layer 40, a first adhesive layer 41, and a first composite layer 42 arranged in sequence from top to bottom, the first composite layer 42 includes a first film layer 421 and a first microstructure layer 422; the first film layer 421 is fixedly arranged on the base layer 40 through the first adhesive layer 41, and a precision microstructure is arranged on the first microstructure 422, including a first precision microstructure main body layer 4221, a first coating layer 4222 and a first ink layer 4223; the first film layer 421 is fixedly arranged on the base layer 40 through the first adhesive layer 41, and a precision microstructure is arranged on the first microstructure 422, including a first precision microstructure main body layer 4221, a first coating layer 4222 and a first ink layer 4223; A plurality of micro-nano sub-structures are arranged on a precision microstructure main layer 4221, and grooves are arranged on the micro-nano sub-structures, or a plurality of grooves and platform areas are arranged on the first precision microstructure main layer 4221; the first coating layer 4222 is a conformal structure imitating the surface shape of the precision microstructure main layer 4221, and the first coating layer 4222 is provided with grooves, and the grooves on the first coating layer 4222 correspond one-to-one to the grooves of the first precision microstructure main layer 4221, and ink is filled in the grooves of the first coating layer 4222.

[0178] like Fig.26As shown, the present invention provides a decorative texture structure of a second embodiment, the decorative texture structure comprises a base layer 40, a first adhesive layer 41, a first composite layer 42, a second adhesive layer 43 and a second composite layer 44 arranged in sequence from top to bottom. The base layer 40, the first adhesive layer 41 and the first composite layer 42 are Fig.25 The embodiment shown is the same, the second composite layer 44 includes a second film layer 441 and a second microstructure layer 442 arranged in sequence from top to bottom; the second film layer 441 is fixedly arranged on the first composite layer 42 through the second adhesive layer 43, and the second microstructure layer 442 is provided with a precision microstructure or other microstructures, such as a laser micro-nano structure, a silver micro-nano structure, etc., but not limited thereto. Taking the second micro-nano structure layer 442 as an example, it includes a second precision microstructure main body layer 4421, a second coating layer 4422, and a second ink layer 4423. The second coating layer 4422 is a conformal structure that imitates the surface shape of the second precision microstructure main body layer 4421, and the grooves of the second coating layer 4422 correspond one-to-one to the grooves of the second precision microstructure main body layer 4421, and the second ink layer 4423 is filled in the grooves on the second coating layer 4422.

[0179] like Fig. 27 As shown, the present invention provides a decorative texture structure of a third embodiment, wherein the decorative texture structure includes a base layer 40, a first adhesive layer 41, a first composite layer 42 and a silk-screen layer 45 arranged in sequence from top to bottom, the first composite layer 42 includes a first film layer 421, a first microstructure layer 422 and a first coating layer 423 arranged in sequence from top to bottom, the first microstructure layer 422 is provided with a precision microstructure, which includes a plurality of micro-nano substructures, the micro-nano substructure is provided with grooves, and the grooves are filled with ink; the first film layer 421 is fixedly provided on the base layer 40 by the first adhesive layer 41, and the silk-screen layer 45 is provided on the first coating layer 423.

[0180] like Fig.28 As shown, the present invention provides a fourth embodiment of a decorative texture structure, which includes a base layer 40, a first adhesive layer 41, a first composite layer 42, a second adhesive layer 43 and a second composite layer 44 arranged in sequence from top to bottom. The base layer 40, the first adhesive layer 41, the first composite layer 42 and the second composite layer 44 are arranged in sequence from top to bottom. Fig. 27The second composite layer includes a second film layer 441 and a second microstructure layer 442 arranged from top to bottom, and the second microstructure layer 442 is provided with a precision microstructure or other microstructures, such as a laser micro-nano structure, a sub-silver micro-nano structure, etc., but is not limited thereto. The following takes the example of a precision microstructure arranged on the second microstructure layer 442, which includes a second precision microstructure main layer 4421, a second coating layer 4422 and a second ink layer 4423; a plurality of micro-nano sub-structures are arranged on the second precision microstructure main layer 4421, and grooves are arranged on the micro-nano sub-structures, or a plurality of grooves and platform areas are arranged on the second precision microstructure main layer 4421, the second coating layer 4422 is a conformal structure imitating the surface shape of the second precision microstructure main layer 4421, the grooves on the second coating layer 4422 correspond one-to-one to the grooves on the second precision microstructure main layer 4421, the second ink layer 4423 is filled in the grooves on the second coating layer 4422, and the second thin film layer 441 is fixedly arranged on the first composite layer 42 by the second adhesive layer 43.

[0181] like Fig.29 As shown, the present invention provides a decorative texture structure of the fifth embodiment, the decorative texture structure comprises a base layer 40, a first adhesive layer 41, a first composite layer 42 and a second composite layer arranged in sequence from top to bottom. The first composite layer 42 comprises a first film layer 421 and a first microstructure layer 422; a precision microstructure is arranged on the first microstructure layer 422, the first microstructure layer 422 comprises a first precision microstructure main body layer 4221, a first coating layer 4222 and a first ink layer 4223; a plurality of micro-nano substructures are arranged on the first precision microstructure main body layer 4221, a groove is arranged on the micro-nano substructure, or a plurality of grooves and platform areas are arranged on the first precision microstructure main body layer 4221; the first coating layer 4222 is a conformal structure imitating the surface shape of the precision microstructure main body layer 4221, the first coating layer 4222 is arranged with a groove, the groove on the first coating layer 4222 corresponds to the groove of the first precision microstructure main body layer 4221 one by one, and the ink is filled in the groove of the first coating layer 4222. The second composite layer is provided with a precision microstructure or other micro-nanostructure, such as a laser micro-nanostructure, a silver-substrate micro-nanostructure, etc., but not limited thereto. Taking the laser micro-nanostructure as an example, the second composite layer only includes a second microstructure layer 442', which includes a second micro-nanostructure main layer 4421', a second coating layer 4422' and a second ink layer 4423'; the second coating layer 4422' is a conformal structure imitating the surface shape of the second micro-nanostructure main layer 4421', the grooves on the second coating layer 4422' correspond one-to-one to the grooves of the micro-nanostructure on the second micro-nanostructure main layer 4421', the second ink layer 4423' is filled in the grooves on the second coating layer 4422', and the second micro-nanostructure main layer 4421' is provided on the first composite layer 42.

[0182] Figure 25-Figure 29 The first microstructure layer 422 and the second microstructure layer 442 and 442' are only schematic. The first microstructure layer 422 and the second microstructure layer 442 and 442' are provided with precise microstructures. For the actual structure, see Figures 4a-4d , Figure 5a-5d and Fig. 9 , but it is not limited to this.

[0183] Figure 25-Figure 29 In the embodiment of the present invention, the base layer is a transparent and flat glass or composite board; the first adhesive layer and the second adhesive layer are OCA optical adhesive layers; the first film layer and the second film layer are PET films with a thickness range of 25μm-200μm, and a preferred thickness range of 50μm-100μm; the first microstructure layer and the second microstructure layer are UV adhesive layers; the first ink layer is nano ink, which is filled into the grooves of the micro-nano substructure by scraping the nano ink with a metal scraper; the second ink layer is nano ink, which is made by screen printing technology, the thickness of the second ink layer is in the range of 10μm-15μm, and the second ink layer is white ink or black ink, which can realize the function of covering the substrate. The materials of the first coating layer and the second coating layer include brightening film, anti-reflection film, SiO2 and indium and other materials, with a thickness range of 80nm-260nm, and a preferred thickness of 140nm, to achieve the functions of brightening, anti-reflection and medium color. The first coating layer and the second coating layer are prepared by evaporation or vacuum sputtering process; the silk-screen layer is an ink layer, which is produced by screen printing process. The thickness range of the silk-screen layer is 10μm-15μm, and the silk-screen layer is white ink or black ink, which can achieve the function of covering the substrate.

[0184] The decorative texture of the present invention uses micro-nano lithography technology to transfer micro-nano textures onto a substrate, and by setting a precise microstructure on the substrate, a three-dimensional, light and shadow, and color effect is presented. It is softer than traditional gradient colors, more visually comfortable, and can have a glare effect of texture. A variety of effects can be prepared, and the application field is wider, such as mobile phone decoration, car interior, cosmetic top cover, home appliance surface texture, etc. It solves the problem that the pattern color in the prior art is relatively monotonous, and can only achieve a superimposed gradient effect of 2-3 colors, and cannot change to multiple colors. Fig.30 This is a rendering of an implementation method, and the prepared decorative texture presents the effect of ink painting.

[0185] The same layer names in the above different products or embodiments do not mean that their materials, components, thicknesses or patterns and other related parameters must be the same. They may be the same or different and can be selected or manufactured according to actual needs. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not 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.

[0186] In the accompanying drawings, the sizes and relative sizes of layers and regions are exaggerated for clarity. It should be understood that when an element, such as a layer, region, or substrate, is referred to as being "formed on," "disposed on," or "located on" another element, the element may be disposed directly on the other element, or there may be intervening elements. Conversely, when an element is referred to as being "formed directly on" or "disposed directly on" another element, there are no intervening elements.

[0187] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore should not be understood as limitations of the present invention.

[0188] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0189] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0190] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A multi-color three-dimensional dynamic image that can be signed anti-counterfeiting card, characterized in that: It includes a base layer, a first endorsement layer arranged on one side of the base layer, a first composite layer arranged on the first endorsement layer, a second endorsement layer arranged on the other side of the base layer, and a second composite layer arranged on the second endorsement layer; The first composite layer includes a first microstructure layer, on which a precision microstructure is arranged, the precision microstructure includes a plurality of micro-nano substructures, the micro-nano substructures are provided with grooves, and the grooves are filled with at least one color of ink; the period of the micro-nano substructures is arranged according to the Fresnel law, or arranged according to the equal-width cutting projection law; the micro-nano substructures also include at least one inclined surface, and the inclined surface is used to reflect light to produce light and shadow effects; the ratio of the groove width on each of the micro-nano substructures to the period of the micro-nano substructure is K, and the ratio K of different micro-nano substructures is the same.

2. The anti-counterfeiting card that can be endorsed as claimed in claim 1, characterized in that: The first composite layer includes a first base film layer, a first microstructure layer, a first coating layer and a first protective layer which are stacked in sequence, and the first base film layer is arranged on the first endorsement layer.

3. The anti-counterfeiting card that can be endorsed as claimed in claim 1, characterized in that: The second composite layer includes a second base film layer and a second protective layer which are arranged in sequence, the second endorsement layer is arranged on the second base film layer, and the second endorsement layer is located between the base layer and the second base film layer.

4. The anti-counterfeiting card that can be endorsed as claimed in claim 3, characterized in that: The second composite layer also includes a second microstructure layer and a second coating layer; the second microstructure layer and the second coating layer are both arranged between the second base film layer and the second protective layer, and the second coating layer is arranged on a side of the second microstructure layer close to the second protective layer; The second microstructure layer is provided with a precision microstructure, which includes a plurality of micro-nano substructures, and the micro-nano substructure is provided with grooves, and the grooves are filled with at least one color of ink; or the precision microstructure includes a plurality of grooves and platform areas, and the grooves are filled with at least one color of ink.

5. The anti-counterfeiting card that can be endorsed as claimed in claim 2, characterized in that: The material of the first microstructure layer is resin, and the resin is coated on the first base film layer; The base layer includes one or more film layers, and the material of the base layer is a PC film layer or a PET film layer; The first base film layer is a PC base film layer or a modified PET base film layer; The material of the first endorsement layer is PC film or modified PET film; The material of the second endorsement layer is PC film or modified PET film; The first coating layer is an opaque metal layer or a transparent medium layer, the material of the opaque metal layer includes one or more of chromium, aluminum and copper, and the material of the transparent medium layer includes one or more of zinc sulfide, titanium dioxide and magnesium fluoride; The first protective layer is bonded to the first coating layer, and the first protective layer is a resin layer with good bonding properties with the first coating layer.

6. The anti-counterfeiting card that can be endorsed as claimed in claim 4, characterized in that: The material of the second microstructure layer is resin, and the resin is coated on the second base film layer; The second base film layer is a PC base film layer or a modified PET base film layer; The second coating layer is an opaque metal layer or a transparent medium layer. The material of the opaque metal layer includes one or more of chromium, aluminum and copper. The material of the transparent medium layer includes one or more of zinc sulfide, titanium dioxide and magnesium fluoride.

7. The anti-counterfeiting card capable of endorsement according to claim 5 or 6, characterized in that: Multiple images and / or graphic characters are arranged on the first endorsement layer and / or the second endorsement layer, which supports real-time endorsement of multiple images and graphic characters, wherein the graphic characters include one or more of three-dimensional portraits, three-dimensional graphics, isotopic images, dynamic floating and sinking text graphics and two-dimensional codes; A chip is disposed in the base layer.

8. A method for preparing an anti-counterfeiting card capable of endorsement according to any one of claims 1 to 7, characterized in that: The steps include: S1. Preparation of the first composite layer A resin layer is coated on one side of the first base film layer, and a first microstructure layer is formed on the resin layer by transfer printing or gravure printing, wherein the micro-nano substructure of the first microstructure layer is provided with grooves, and the grooves are filled with ink; or the precision microstructure on the first microstructure layer includes a plurality of grooves and platform areas, and the grooves are filled with ink; vacuum coating is performed on the first microstructure layer to form a first coating layer; and a first protective layer is formed on the first coating layer to obtain a first composite layer; S2. Preparation of the second composite layer coating a second protective layer on the second base film layer; S3. Heat and laminate the first composite layer, the first signed layer, the base layer, the second signed layer, and the second composite layer. The first base film layer in the first composite layer is arranged on the first signed layer, and the second signed layer is arranged on the second base film layer in the second composite layer.

9. The method for preparing an anti-counterfeiting card capable of endorsement according to claim 8, characterized in that: Also includes step S4; S4. Perform image signing on the first signature layer and the second signature layer.

10. A method for preparing an anti-counterfeiting card capable of endorsement according to any one of claims 1 to 7, characterized in that: The specific steps are as follows: S1. Preparation of the first composite layer A resin layer is coated on one side of the first base film layer, and a first microstructure layer is formed on the resin layer by transfer printing or gravure printing, wherein the micro-nano substructure of the first microstructure layer is provided with grooves, and the grooves are filled with ink; or the precision microstructure on the first microstructure layer includes a plurality of grooves and platform areas, and the grooves are filled with ink; vacuum coating is performed on the first microstructure layer to form a first coating layer; and a first protective layer is formed on the first coating layer to obtain a first composite layer; S2. Preparation of the second composite layer A resin layer is coated on the second base film layer, and a second microstructure layer is formed on the resin layer by transfer printing or gravure printing, wherein the precision microstructure on the second microstructure layer includes a plurality of micro-nano substructures, and grooves are provided on the micro-nano substructures, and ink is filled in the grooves, or the precision microstructure on the second microstructure layer includes a plurality of grooves and platform areas, and the grooves are filled with ink; then, a second coating layer is formed by vacuum coating on the second microstructure layer, and a second protective layer is formed on the second coating layer to obtain a second composite layer; S3. Heat and laminate the first composite layer, the first signed layer, the base layer, the second signed layer, and the second composite layer. The first base film layer in the first composite layer is arranged on the first signed layer, and the second signed layer is arranged on the second base film layer in the second composite layer.

11. The method for preparing an anti-counterfeiting card capable of endorsement according to claim 10, characterized in that: Also includes step S4; S4. Perform image signing on the first signature layer and the second signature layer.

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