CN115527467A - Thermoprinting film, transfer film, composite paper and transfer paper - Google Patents

Abstract

The invention discloses a hot stamping film, a transfer film, composite paper and transfer paper. Hot stamping film, transfer film, composite paper and transfer paper all contain precision microstructure layer, and the surface of precision microstructure layer is provided with precise microstructure; hot stamping film includes base film layer, precision microstructure layer, medium layer and hot melt Adhesive layer; transfer film includes base film layer, precision microstructure layer and medium layer; composite paper base film layer, precision microstructure layer, medium layer, hot melt adhesive layer and backing paper layer; transfer paper includes precision microstructure layer, medium layer, hot melt adhesive layer and backing paper layer. The present invention is provided with a precise microstructure, which presents color, three-dimensional relief, and dynamic optical effects; the width of the groove is less than 30 μm, and the groove is filled with micro-nano-level ink, which is finer and presents a more delicate image. The ink is only filled in the groove, which reduces the use of ink; and does not require subsequent printing, which reduces the process steps and reduces the cost.

Description

Hot stamping film, transfer film, composite paper and transfer paper

The present invention is a divisional application with an application date of 2022.05.20, an application number of 202210548852.9, and an invention title of a precision microstructure presenting three-dimensional relief images, its preparation method and application.

technical field

The invention relates to the field of precision microstructure design products, in particular to a hot stamping film, transfer film, composite paper and transfer paper.

Background technique

Hot stamping film refers to the technology of combining laser holographic anodized aluminum film with hot stamping technology to form colorful laser holographic marks and anti-counterfeiting marks of three-dimensional patterns on the surface of printed matter. The transfer film is an intermediate carrier that exists on the transfer paper base or plastic base, carrying the printed or printed pattern, and is used to transfer to a layer of chemical elastic film on the printed article. Composite paper is a high-end packaging paper that loads laser holographic patterns or text signals on the surface of aluminized paper by molding. The transfer paper adopts the transfer method, takes the film as the transfer substrate, and processes such as coating, molding, aluminizing, and compounding, so that the holographic information is transferred to the surface of the backing paper through the adhesive layer. After the backing paper and the transfer film are combined, The transfer substrate is peelable.

In the printing of existing special fields such as hot stamping film, transfer film, composite paper and transfer paper, the method usually adopted is to transfer the ink to the surface of the substrate by screen printing or gravure printing. In screen printing, the depth of color is achieved through the difference in dot size. In gravure printing, the graphic part of the precision gravure is concave, and the degree of depression varies with the level of the image, and the blank part of the precision gravure is raised and on the same plane. The shade level of the printed picture is determined by the size and depth of the pit. If the pit is deeper, it contains more ink, and the ink layer left on the substrate after embossing is thicker; on the contrary, if the pit is deeper If it is shallow, the amount of ink contained is less, and the ink layer left on the substrate after embossing is thinner. The precision gravure of gravure printing is composed of pits corresponding to the original graphics and the surface of the precision gravure.

The existing gravure printing technology is limited by the accuracy, the pit dot size is larger than 50μm, and the fineness of the image is not high; the relief feeling of the image is reflected by the color depth of the ink, which has limitations and cannot reflect the real three-dimensional effect; and because only the color depth A way of expression with a single expression effect.

Therefore, it is necessary to propose an improved solution to overcome the above problems.

Contents of the invention

The object of the present invention is to provide a hot stamping film, a transfer film, a composite paper and a transfer paper respectively. The hot stamping film, transfer film, composite paper and transfer paper can all present color, dynamic light and shadow and three-dimensional Embossed effect.

According to one aspect of the present invention, the present invention provides a hot stamping film, including a base film layer, a precision microstructure layer, a medium layer and a hot melt adhesive layer arranged in sequence from top to bottom; the precision microstructure layer is placed away from the release layer A precise microstructure is provided on the surface of the surface, and the precise microstructure includes a plurality of micro-nano substructures, and the periods of the plurality of micro-nano substructures are arranged according to preset rules for presenting a three-dimensional relief effect; the micro-nano substructures are set There is at least one groove, the groove includes at least two opposite side walls and a bottom, and ink is arranged in the groove for presenting color effects; the period of the micro-nano substructure is arranged according to preset rules, including Arranged according to the law of Fresnel, or arranged according to the law of equal-width slicing projection; the micro-nano substructure may also include at least one inclined surface, which is used to reflect light and produce light and shadow effects; each of the micro-nano substructures The ratio of the width of the groove on the nano-substructure to the period of the micro-nano substructure is K, and the ratio K is the same for different micro-nano substructures.

In one embodiment, a release layer is also included, and the release layer is arranged between the base film layer and the precision microstructure layer.

In one embodiment, the ink is a nano-ink, and the nano-ink is partially or fully set in the groove of the micro-nano substructure by means of transfer printing or gravure printing, and the particle size of the nano-ink is smaller than that of the concave on the micro-nano substructure. The width of the slot.

In one embodiment, the hot stamping film has positioning color marks, and the positioning color marks are located on both sides of the precision microstructure layer, and the positioning color marks are convenient for the hot stamping process to identify the hot stamping.

In one embodiment, the dielectric layer is a metal material or a transparent medium, the metal material is aluminum or chromium, and the transparent medium is zinc sulfide or magnesium fluoride;

The base film layer is a PET film layer.

According to another aspect of the present invention, the present invention provides a transfer film, comprising a base film layer, a precision microstructure layer, and a dielectric layer arranged sequentially from top to bottom; To form a precise microstructure in the graphic area, the precise microstructure includes a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and ink is filled in the grooves; the period of the micro-nano substructures is as follows: Arrangement according to preset rules, including arrangement according to Fresnel rule, or arrangement according to equal-width slicing projection rule; the micro-nano substructure may also include at least one inclined surface, and the inclined surface is used to reflect light, resulting in Light and shadow effect: the ratio of the groove width on each micro-nano substructure to the period of the micro-nano substructure is K, and the ratio K of different micro-nano substructures is the same.

In one embodiment, the dielectric layer is a metal material or a transparent medium, the metal material is aluminum or chromium, and the transparent medium is zinc sulfide or magnesium fluoride;

The base film layer is a PET film layer.

In one embodiment, the ink is a nano-ink, and the nano-ink is partially or fully set in the groove of the micro-nano substructure by means of transfer printing or gravure printing, and the particle size of the nano-ink is smaller than that of the concave on the micro-nano substructure. The width of the slot.

According to another aspect of the present invention, the present invention provides a composite paper, comprising a base film layer, a precision microstructure layer, a medium layer, a hot melt adhesive layer and a backing paper layer arranged sequentially from top to bottom; The surface away from the base film layer is provided with a precise microstructure for forming a pattern area, the precise microstructure includes a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and ink is filled in the grooves; The periods of the micro-nano substructures are arranged according to preset rules, including Fresnel rules, or according to the equal-width slicing and projection rules; the micro-nano substructures may also include at least one inclined surface, and the inclined The surface is used to reflect light to produce light and shadow effects; the ratio of the groove width on each micro-nano substructure to the period of the micro-nano substructure is K, which is different from the ratio of the micro-nano substructure K is the same.

In one embodiment, the dielectric layer is a metal material or a transparent medium, the metal material is aluminum or chromium, and the transparent medium is zinc sulfide or magnesium fluoride;

The base film layer is a PET film layer.

In one embodiment, the ink is a nano-ink, and the nano-ink is partially or fully set in the groove of the micro-nano substructure by means of transfer printing or gravure printing, and the particle size of the nano-ink is smaller than that of the concave on the micro-nano substructure. The width of the slot.

According to still another aspect of the present invention, the present invention provides a kind of transfer paper, comprises the precise microstructure layer, medium layer, hot melt adhesive layer and bottom paper layer that are arranged sequentially from top to bottom; There is a precise microstructure, the precise microstructure includes a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and ink is filled in the grooves; the periods of the micro-nano substructures are arranged according to preset rules, Arranged according to the law of Fresnel, or arranged according to the law of equal-width slicing projection; the micro-nano substructure may also include at least one inclined surface, which is used to reflect light and produce light and shadow effects; each The ratio of the width of the groove on the micro/nano substructure to the period of the micro/nano substructure is K, and the ratio K of different micro/nano substructures is the same.

In one embodiment, the dielectric layer is a metal material or a transparent medium, the metal material is aluminum or chromium, and the transparent medium is zinc sulfide or magnesium fluoride.

In one embodiment, the ink is a nano-ink, and the nano-ink is partially or fully set in the groove of the micro-nano substructure by means of transfer printing or gravure printing, and the particle size of the nano-ink is smaller than that of the concave on the micro-nano substructure. The width of the slot.

The beneficial effects of the present invention include: the hot stamping film, transfer film, composite paper and transfer paper of the present invention are provided with precise microstructures, and the precise microstructures present a three-dimensional relief effect; the micro-nano substructures include inclined surfaces, presenting dynamic optical effects; There are grooves on the precision microstructure, and ink is filled in the grooves to present a colored effect; different inks are filled in different regions, or different inks are filled in multiple layers to present a colored effect; finally, the three-dimensional combination of color, dynamic light and shadow, and three-dimensional relief This effect is combined with the precise microstructure; the width of the groove is less than 30 μm, and the groove is filled with micro-nano ink, which is finer and the image presented is more delicate.

At the same time, because the ink is only filled in the groove, the use of ink is reduced, which is more environmentally friendly; and subsequent printing is not required, which reduces the process steps and reduces the cost.

In the precision microstructure, the period of the micro-nano substructure in the precision microstructure is arranged according to the Fresnel law, or the arrangement of the equal-width slicing projection law, etc., so that the precision microstructure presents a three-dimensional relief Effect; the micro-nano substructure includes an inclined surface, presenting a dynamic optical effect; the precision microstructure is provided with grooves, and the ink is filled in the groove, showing a colored effect; different inks are filled in different regions, or different inks are filled in multiple layers , showing 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 30 μm, and the groove is filled with micro-nano ink, which is more refined, so that the presented The image is more detailed.

The preparation method of the precision microstructure is to set the structure opposite to the expected micro-precision structure on the template. After transfer printing, cleaning and curing, an ultra-precision structure is obtained. At the same time, the ink only exists in the groove of the micro-nano substructure, not Covering the precise microstructure, the amount of ink used is small, which not only retains the three-dimensional relief effect of the micro-nano substructure, the light and shadow effect, but also makes the color more gorgeous. After cleaning in this method, the washed ink can also be collected and reused, which is low-carbon and environmentally friendly.

Another preparation method for precision microstructures is to attach the ink to the stencil through the anilox roller, and fill the ink into the grooves while transferring the micro-nano substructure. This method is more convenient and easy to use. The amount of ink is less, low-carbon and environmentally friendly; and the ink is also directional filled in the grooves, which not only retains the three-dimensional relief effect of the micro-nano substructure, light and shadow effects, but also makes the color more gorgeous.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a precision microstructure provided by the present invention in one embodiment;

Fig. 2 is a scanning electron micrograph of an embodiment of the precision microstructure in the present invention;

Figure 3a is a schematic diagram of an embodiment of the arrangement method of a plurality of micro-nano substructures in the present invention;

Figure 3b is a schematic cross-sectional view of a plurality of micro-nano substructures obtained by the arrangement method shown in Figure 3a;

Fig. 4a is the first example of a form of the micro-nano substructure in the present invention;

Fig. 4 b is the second example of a form of the micro-nano substructure in the present invention;

Fig. 4c is the third example of a form of the micro-nano substructure in the present invention;

Fig. 4d is the fourth example of a form of the micro-nano substructure in the present invention;

Fig. 5 a is the first example of another form of the micro-nano substructure in the present invention;

Fig. 5 b is the second example of another form of the micro-nano substructure in the present invention;

Fig. 5c is the third example of another form of the micro-nano substructure in the present invention;

Fig. 5d is the fourth example of another form of the micro-nano substructure in the present invention; Fig. 6 is another example of the micro-nano substructure in the present invention, wherein the period is S, and the groove width is W;

Fig. 7 is an example that different regions are filled with ink of different colors among the present invention;

Figure 8 is a schematic diagram of an embodiment of a precision microstructure comprising a coating layer in the present invention;

9 is a schematic cross-sectional view of another embodiment of the precision microstructure provided by the present invention;

Figure 10a is a schematic diagram of another embodiment of the method for arranging a plurality of micro-nano substructures in the present invention;

Figure 10b is a schematic cross-sectional view of a plurality of micro-nano substructures obtained by the arrangement method shown in Figure 10a;

Fig. 11 is a schematic diagram of another embodiment of a precision microstructure comprising a coating layer in the present invention;

Figure 12 is an example diagram of two layers of precision microstructures stacked in the same direction;

Fig. 13 is an example diagram of two layers of precision microstructures stacked against each other;

Fig. 14 is a schematic flow chart of an embodiment of a method for preparing a precision microstructure presenting a three-dimensional relief image in the present invention;

Fig. 15 is a process schematic diagram of the preparation method in Fig. 14;

Fig. 16 is a schematic flow chart of an embodiment of a method for preparing a precision microstructure presenting a three-dimensional relief image in the present invention;

Figure 17 is a schematic diagram of the preparation system in one embodiment of the present invention;

Figure 18 is a schematic structural view of the hot stamping film shown in the present invention;

Fig. 19 is a schematic structural view of hot stamping film ink and positioning marks in Fig. 18;

Figure 20 is a schematic structural view of the transfer film shown in the present invention;

Figure 21 is a schematic structural view of the composite paper shown in the present invention;

Figure 22 is a schematic structural view of the transfer paper shown in the present invention;

Fig. 23 is a schematic structural view of an embodiment of the anti-counterfeit card shown in the present invention;

Fig. 24 is a structural schematic diagram of another embodiment of the anti-counterfeit card shown in the present invention;

Fig. 25 is a schematic structural view of the first embodiment of the decorative texture shown in the present invention;

Fig. 26 is a schematic structural view of the second embodiment of the decorative texture shown in the present invention;

Fig. 27 is a schematic structural view of the third embodiment of the decorative texture shown in the present invention;

Fig. 28 is a schematic structural view of a fourth embodiment of the decorative texture shown in the present invention;

Fig. 29 is a schematic structural view of a fifth embodiment of the decorative texture shown in the present invention;

Fig. 30 is an effect diagram of an embodiment of the decorative texture shown in the present invention.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

As shown in Figure 1, 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 preset rules for presenting a three-dimensional relief effect; the micro-nano substructures 2 are provided with At least one groove 3, the groove includes at least two opposite side walls (first side wall 31 and second side wall 32) and a bottom 33, ink 4 is arranged in the groove for presenting color effects.

Figure 2 is a scanning electron micrograph of one embodiment of the invention. It can be seen that the precise microstructure 1 is continuous and linear. In other embodiments, the precise microstructure 1 may also be discontinuous lines.

Figure 3a is an embodiment of the arrangement method of multiple micro-nano substructures 2 in the present invention. Taking the three-dimensional relief effect presented finally as a spherical surface as an example, the height of the spherical model is L. According to Fresnel's law, the spherical surface Equal-height layering, the height of each layer is L1, and projection is performed to obtain continuous circular lines, each circular line is a micro-nano sub-structure 2, and multiple micro-nano sub-structures 2 are arranged on the plane according to the Fresnel law Cloth, thus showing the effect of three-dimensional relief, Figure 3b is a cross-sectional view of the micro-nano substructure 2 under this embodiment, the cross-section of the micro-nano substructure under this embodiment is arc-shaped, thus presenting a dynamic light and shadow effect A groove 3 is arranged on the micro-nano substructure 2, and the ink 4 is filled in the groove 3 to present a color. Therefore, the precise microstructure presents the effect of colored dynamic light and shadow and three-dimensional relief, and in other embodiments, it can also be arranged according to the law of equal-width slicing and projection, which can present the effect of three-dimensional relief.

In other embodiments, it may also be a three-dimensional relief effect of other images, such as three-dimensional images of animals, people, plants, etc., and the present invention is not limited thereto.

In some embodiments, as shown in FIGS. 4a-4d , the micro-nano substructure 2 includes an inclined surface, which can reflect light, thereby presenting the effect of dynamic light and shadow. In Fig. 4a, the micro-nano substructure 2 comprises two inclined surfaces, and the cross section is arc-shaped; in Fig. 4b, the micro-nano substructure 2 comprises an inclined surface, and the cross-section is triangular; in Fig. 4c, the micro-nano substructure 2 comprises an inclined surface , the cross-section is arc-shaped, the micro-nano substructure 2 in Fig. 4d includes an inclined surface, and the cross-section is stepped; the groove 3 is arranged in the middle of the inclined surface of the micro-nano substructure 2, and the ink is filled in the groove 3, The bottom of the groove 3 and the bottom of the micro-nano substructure 2 are not on the same plane.

In some other embodiments, as shown in Figures 5a-5d, the groove 3 is arranged on 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 is in contact with the surface of the micro-nano substructure 2. The bottom is on a flat surface.

In the embodiment shown in Figures 4a-4d and Figures 5a-5d, the widths of the grooves 3 on different micro-nano substructures 2 are the same, the width of the grooves 3 ranges from 50nm to 30μm, and the depth of the grooves 3 ranges 50nm-50μm; the particle size of the ink is smaller than the width of the groove 3, and the particle size range of the ink is 10nm-15μm.

In some embodiments, as shown in FIG. 6 , the period of the micro-nano substructure 2 is S, the width of the groove on the micro-nano substructure 2 is W, and the periods S of different micro-nano substructures 2 may be different, However, 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.

In some embodiments, as shown in FIG. 7 , the inks filled in the grooves 3 of different micro-nano substructures 2 are different. The grooves 3 of all micro-nano substructures 2 in area A are filled with the same ink, and the grooves 3 of all micro-nano substructures 2 in area B are filled with another same ink, thus presenting a colorful effect . In other embodiments there may be more areas filled with more different colors.

In some embodiments, as shown in FIG. 8 , a conformal coating layer 401 is provided on the plurality of micro-nano substructures, and the grooves on the coating layer 401 correspond to the grooves on the micro-nano substructures 2 one by one. 4 Fill in the groove on the coating layer.

A precision microstructure 1 as shown in Figure 9 includes a plurality of grooves 3 and a platform area 5 connected thereto, and the periods of the plurality of grooves 3 are arranged according to preset rules for presenting a three-dimensional relief effect; the grooves 3 includes at least two opposite side walls (first side wall 31, second side wall 32) and a bottom 33, and ink 4 is arranged in the groove 3 for presenting color effects. The groove 3 is continuous and/or discontinuous linear; the width W of the groove 3 ranges from 50nm to 30μm, and the depth h of the groove 3 ranges from 50nm to 50μm; the particle size of the ink is smaller than the width of the groove 3, and the ink's The particle size range is 10nm-15μm; the width of different grooves 3 is the same, or for different grooves 3, the ratio of the width W of the groove 3 to the period S of the groove 3 is the same; in different grooves 3 It can be filled with the same ink or different inks to present a colorful effect.

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 value of K on different grooves 3 is the same .

Figure 10a is an embodiment of a method for arranging a plurality of grooves 3 of a precision microstructure 1 according to 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, and according to Fresnel's law, The spherical surface is layered at the same height, and the layered height is L1, and it is projected to obtain continuous annular lines, each annular line is a groove 3, and Figure 10b is a cross-sectional view of the precision microstructure 1 under this embodiment. The microstructure 1 includes a plurality of grooves 3 and a platform region 5 connected thereto, and the grooves 3 are filled with ink 4 to present a color. Therefore, the precise microstructure presents the effect of colored three-dimensional relief; in other embodiments, it may also be arranged according to the law of equal-width slicing and projection, etc., which can present the effect of three-dimensional relief. In other embodiments, it may also be a three-dimensional relief effect of other images, such as three-dimensional images of animals, people, plants, etc., and the present invention is not limited thereto.

In some embodiments, as shown in FIG. 11 , a conformal coating layer 401 is disposed on the plurality of grooves and platform regions 5 , and the grooves of the coating layer 401 are filled with ink 4 .

In some embodiments, as shown in Figure 12, it includes two layers of precision microstructures 1, the two layers of precision microstructures are stacked in the same direction, and the grooves of the two layers of precision microstructures are filled with different inks to present a color effect. In some embodiments, more layers of fine microstructures may be included.

In some embodiments, as shown in Figure 13, it includes 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 other In some embodiments, more layers of precise microstructures may be included, as shown in Figures 4a-4d, Figures 5a-5d and Figure 9, but not limited thereto.

When two or more layers of precision microstructures are stacked, at least one intermediary layer can be provided between the layers. The intermediary layer can be a base material layer, an adhesive layer, a dielectric layer or a plating layer, etc., but is not limited thereto.

The precision microstructure can be the whole including the polymer film substrate, or a single layer, and the material of the precision microstructure is curable materials such as UV glue and heat curing glue.

The precision microstructure can also be covered with a protective layer to protect the precision microstructure from being worn out during use.

FIG. 14 is a schematic flowchart of an embodiment of a method for preparing a precision microstructure presenting a three-dimensional relief image in the present invention. FIG. 15 is a process schematic diagram of the preparation method in FIG. 14 .

Combining Figure 14 and Figure 15, a method for preparing a precise microstructure presenting a three-dimensional relief image, including:

S1, providing a template 110 with a reverse microstructure on the template 110;

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

S3: filling ink 130 on the transferred side of the substrate;

S4: Cleaning the ink-filled side of the substrate to obtain a precise microstructure 1 filled with ink; wherein in S1, the reverse microstructure on the stencil 110 corresponds to the expected unevenness of the microstructure that is not filled with ink, Specifically, the raised portion on the reverse plate corresponds to the grooved portion on the microstructure,

The groove portion on the reverse plate corresponds to the raised portion on the microstructure.

The reverse microstructure and the precise microstructure 1 in FIG. 15 are only schematic. For the actual structure of the precise microstructure 1, see FIGS. 4a-4d, 5a-5d and 9, but not limited thereto.

In one embodiment, between step S2 and step S3, conformal coating is further included to obtain a coating layer, and the grooves on the coating layer correspond to the grooves on the precision microstructure 1 one by one.

In one embodiment, the precise microstructure can be transferred to the substrate all at once, and then one ink can be filled on one side of the transfer to present one color; in other embodiments, it can be filled in regions Different inks, so as to present a colorful effect.

In one embodiment, after step S4, that is, after curing, S2-S4 can be repeated on the side where the precise microstructure has been imprinted or on the side away from the precise microstructure, and then transfer the precise microstructure , fill the ink, clean the ink, retain the ink in the groove on the precision microstructure, and form a multi-layer precision microstructure preparation. Different layers are filled with different inks to create a colorful effect.

In another embodiment, in step S4, that is, after curing, the precise microstructure can be transferred and cured on the side of the substrate away from the precise microstructure, the ink is filled, the ink is cleaned, and the precise microstructure is retained. The ink in the grooves on the structure forms the preparation of double-sided precision microstructures. Different inks are filled on opposite sides to create a colorful effect.

The substrate is polymer film coated with UV glue, or UV glue layer, heat curing glue and other curable materials.

The preparation method of the template 110 includes: designing a three-dimensional relief image; preprocessing the image according to the Fresnel law or contour slicing projection to obtain a periodic grayscale image; providing a photoresist plate, and performing photolithography on the periodic grayscale image , obtain a micro-nano substructure with an inclined surface on the photoresist plate, and then photo-etch grooves on the micro-nano substructure; replicate the obtained photoresist plate to obtain a template 110 .

In another embodiment, the preparation method of the template 110 includes: designing a three-dimensional relief image; and preprocessing the image according to the Fresnel law or contour cut projection to obtain a periodic grayscale image; Take a certain width in a period as the part to be lithography, and the remaining part in the period is the non-lithography part, and a periodic binary image is obtained; provide a photoresist plate, and perform photolithography on the periodic binary image, in the photoresist Grooves are obtained on the resist plate; the obtained photoresist plate is replicated to obtain a template 110 .

FIG. 16 is a schematic flowchart of an embodiment of a method for preparing a precision microstructure presenting a three-dimensional relief image in the present invention. 17 is a schematic diagram of the preparation system in the present invention, the preparation system includes an embossing roller 210 , a stencil 220 , a substrate 230 , an anilox roller 240 , an ink tank 250 and a curing machine 260 .

Combining Figure 16 and Figure 17, a method for preparing a precise microstructure presenting a three-dimensional relief image, including:

S11: provide a template 220, the template has a reverse version of the precise microstructure;

S21: using the anilox roller 240 to attach the ink to the stencil 220;

S31: providing a base material 230, and transferring the reverse version precision microstructure with ink attached to the stencil 220 onto the surface of the base material 230;

S41: curing;

In S11, the reverse microstructure on the stencil 220 corresponds to the microstructure concavo-convex that is not expected to be filled with ink. Specifically, the raised part on the reverse corresponds to the groove on the microstructure, and The groove part of the corresponding to the raised part on the microstructure.

The material of the stencil 220 is at least one of metal, glass, rubber, plastic or photosensitive resin, and there are precise microstructures on the stencil. The stencil 220 shown in FIG. 15 is only for illustration.

There is at least one and more anilox rollers 240 , and the anilox rollers 240 adhere the ink in the ink tank 250 to the stencil 220 .

The stencil 220 transfers the ink and structures onto the surface of the substrate 230 under the pressure of the embossing roller 210 .

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

The inversion microstructure on the stencil 220 in FIG. 17 is only schematic.

The preparation system is only one of various systems utilized by the method of the present invention, and is not limited thereto.

In one embodiment, between step S11 and step S21, performing conformal coating is also included.

In other embodiments, step S11-step S41 can also be repeated to realize positioning transfer of precise microstructures with different inks on one layer, or the preparation of double-sided precision microstructures, or the preparation of multi-layer precision microstructures, presenting Monochrome or color effects.

The preparation method of the template 220 includes: designing a three-dimensional relief image; preprocessing the image according to Fresnel law or contour slicing projection to obtain a periodic grayscale image; providing a photoresist plate, and performing photolithography on the periodic grayscale image , obtain a micro-nano substructure with an inclined surface on the photoresist plate, and then photoetch grooves on the micro-nano substructure; replicate the obtained photoresist plate to obtain a template 220 .

In another embodiment, the preparation method of the template 220 includes: designing a three-dimensional relief image; and preprocessing the image according to the Fresnel law or contour cut projection to obtain a periodic grayscale image; Take a certain width in a period as the part to be lithography, and the remaining part in the period is the non-lithography part, and a periodic binary image is obtained; provide a photoresist plate, and perform photolithography on the periodic binary image, in the photoresist Grooves are obtained on the resist plate; the obtained photoresist plate is copied to obtain a template 220 .

According to another aspect of the present invention, the precise microstructure is mainly used in packaging films, packaging papers, decorative textures, clothing, anti-counterfeit cards or plastic banknotes and the like. The specific applications of precision microstructures are as follows. Of course, the patterns, materials, thicknesses, or other parameters including the descriptions of the above schemes of the precision structures on different application products may be the same or different.

hot stamping film

Please refer to Fig. 18. Fig. 18 is a schematic structural view of the hot stamping film shown in the present invention. The hot stamping film according to an embodiment of the present invention includes a base film layer 6, a release layer 7, a precision micro Structural layer 8 , medium layer 9 and hot melt adhesive layer 10 .

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

In another embodiment, the precision microstructure layer 8 is provided with a precision microstructure, 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, for Presenting a three-dimensional relief effect; the groove includes at least two opposite side walls and a bottom, and ink 811 is arranged in the groove for presenting a color effect.

Preferably, the ink 811 is a nano-ink, and the nano-ink is partially or fully set 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 that of the groove on the micro-nano substructure. width. Please refer to FIG. 19 , the hot stamping film has positioning color marks 812 , and the positioning color marks 812 are located on both sides of the precision microstructure layer 8 . The positioning color marks 812 are convenient for the hot stamping process to identify the hot stamping.

The precise microstructure layer 8 in Fig. 18 and Fig. 19 is only schematic, and the actual structure of the precise microstructure is shown in Fig. 4a-4d, Fig. 5a-5d and Fig. 9, but not limited thereto.

In this embodiment, the dielectric layer 9 is made of metal aluminum. Of course, in other embodiments, it can also be metal materials such as metal chromium or transparent media such as zinc sulfide and magnesium fluoride. The base film layer 6 is preferably a PET film layer. The release layer 7 is convenient for peeling off the precision microstructure layer 8 and the base film layer 6, and 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.

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 the actual situation. Preferably, the thickness of the base film layer 6 is 12-23 μm, and the thickness of the release layer 7 is 1 The thickness of the precision microstructure layer 8 is 1-10 μm, and the thickness of the dielectric layer 9 is 10-50 nm.

One embodiment of the preparation method of the hot stamping film of the present embodiment is: firstly, the 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 the base film with a release effect is adopted. The film layer 6 or the precise microstructure layer 8 with a release effect is sufficient. Then, coat the transparent coating on the release layer 7, and transfer or gravure to make a plurality of micro-nano substructures and solidify them. There are grooves on the micro-nano substructures, and the nano-inks are positioned and filled in the grooves, or the inks are coated. The cloth is washed so that the nano-ink is only filled in the groove. Then, the dielectric layer 9 is vacuum evaporated, and the dielectric layer 9 can highlight the gradient or relief effect. Finally, the hot melt adhesive layer 10 is applied to obtain the hot stamping film of this embodiment, and the above layers constitute the composite layer of the hot stamping film.

The embodiment of another preparation method is, at first coating release layer 7 on the base film layer 6 of PET film layer, also can not coat release layer 7, adopt the base film layer 6 with release effect or have release type The precise microstructure layer 8 of the effect is sufficient. Then, coat the transparent coating on the release layer 7, and transfer or gravure to make a plurality of grooves and platforms connected to them and solidify, position and fill the nano ink in the groove, or ink coating and cleaning, so that the nano Ink only fills the grooves. Then, the dielectric layer 9 is vacuum evaporated, and the dielectric layer 9 can highlight the gradient or relief effect. Finally, the hot melt adhesive layer 10 is applied to obtain the hot stamping film of this embodiment, and the above layers constitute the composite layer of the hot stamping film.

Hot stamping film production and printing are completed in one, without the need for two steps, which greatly improves production efficiency and saves production costs.

transfer film

Please refer to FIG. 20 , the transfer film of an embodiment provided by 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, and the precision microstructure layer 12 is far away from the base film layer 11. The surface of the surface is provided with a precise microstructure for forming a pattern area, and the precise microstructure includes a plurality of micro-nano substructures, and grooves are arranged on the micro-nano substructures, and the grooves are filled with ink 122 .

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

In this embodiment, a base film layer 11 with a release effect or a precise microstructure layer 12 with a release effect is used. The precise microstructure layer 12 in FIG. 20 is only schematic. For the actual structure of the precise microstructure, refer to FIGS. 4a-4d, 5a-5d and 9, but it is not limited thereto.

The parameters and preparation methods of the base film layer 11, the precision microstructure layer 12, and the medium layer 13 are the same as those of the hot stamping film embodiment, and a transfer film with a composite layer is obtained, which will not be repeated here.

composite paper

Please refer to Fig. 21, the composite paper of an embodiment provided by the present invention includes a base film layer 14, a precision microstructure layer 15, a medium layer 16, a hot melt adhesive layer 17, and a backing paper layer 18 arranged in sequence from top to bottom. The microstructure layer 15 is provided with a precise microstructure for forming a graphic area on the surface away from the base film layer 14, the precise microstructure includes a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and the grooves are filled with Ink 152.

In another embodiment, the precision microstructure layer 15 is provided with a precision microstructure for forming a pattern area on the surface away from the base film layer 14, the precision microstructure includes a plurality of grooves and a platform area connected thereto, the grooves Ink 152 is filled inside.

In other embodiments, the base film layer 14 with a release effect or the precise microstructure layer 15 with a release effect can be used. The parameters and preparation methods of the base film layer 14 , the precise microstructure layer 15 and the dielectric layer 16 are the same as those of the hot stamping film embodiment, and will not be repeated here. After the base film layer 14, the precision microstructure layer 15 and the medium layer 16 are prepared, they are combined with the roll-shaped white cardboard (backing paper layer 18) coated with glue (hot-melt adhesive layer 17) to obtain the composite paper of this embodiment , The above layers constitute the composite layer of the composite paper. The precise microstructure on the precise microstructure layer 15 in FIG. 21 is only schematic. For the actual structure of the precise microstructure, see FIGS. 4a-4d, 5a-5d and 9, but not limited thereto.

transfer paper

Please refer to FIG. 22 , the transfer paper of an embodiment provided by the present invention includes a fine microstructure layer 19 , a medium layer 20 , a hot melt adhesive layer 21 and a backing paper layer 22 arranged sequentially from top to bottom, and the lower layer of the fine microstructure layer 19 The surface is provided with precise microstructures, and the precise microstructures include a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and ink 192 is filled in the grooves.

In another embodiment, a precise microstructure is provided on the lower surface of the precise microstructure layer 19 , and the precise microstructure includes a plurality of grooves and platform areas, and the grooves are filled with ink 192 .

In other embodiments, a precise microstructure layer 19 with release effect can 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 backing paper layer 22 are the same as those of the composite paper embodiment, and will not be repeated here. The precise microstructure layer 19 in FIG. 20 is only schematic. For the actual structure of the precise microstructure, refer to FIGS. 4a-4d, 5a-5d and 9, but it is not limited thereto.

To sum up: Hot stamping film, transfer film, composite paper and transfer paper are equipped with precise microstructures, which present a three-dimensional relief effect; micro-nano substructures include inclined surfaces, presenting dynamic optical effects; There are grooves, and ink is filled in the grooves to present a colored effect; different inks are filled in different regions, 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 in one In terms of precise microstructure: the width of the groove is less than 30 μm, and the groove is filled with micro-nano ink, which is finer and the image presented is more delicate.

At the same time, because the ink is only filled in the groove, the use of ink is reduced, which is more environmentally friendly; and subsequent printing is not required, which reduces the process steps and reduces the cost.

Security card

Please refer to Fig. 23-24, the endorsement anti-counterfeiting certificate card of the multi-color three-dimensional dynamic image 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 set The second endorsement layer on the other side of the base layer and the second composite layer arranged on the second endorsement layer.

In one embodiment, as shown in FIG. 23 , 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 sequentially 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 sequentially stacked. The first base film layer 231 is arranged on the first endorsement layer 24 superior. The first microstructure layer 232 is provided with a precise microstructure, the precise microstructure includes a plurality of micro-nano substructures, the micro-nano substructure is provided with grooves, and the ink of at least one color is filled in the grooves; or the precision microstructure includes A plurality of grooves and platform areas, the grooves are filled with ink of at least one color; the second composite layer 27 includes a second base film layer 271 and a second protective layer 272 arranged in sequence, and the second endorsement layer 26 is arranged on the second on the base film layer 271 , and the second endorsement layer 26 is located between the base layer 25 and the second base film layer 271 .

In another embodiment, as shown in FIG. 24, the difference from the embodiment shown in FIG. 23 is that the second composite layer 27 includes a second base film layer 271, a second microstructure layer 273, a second A coating layer 274 and a second protection layer 272 . The second microstructure layer 273 is provided with a precise microstructure, the precise microstructure includes a plurality of micro-nano substructures, the micro-nano substructure is provided with grooves, and the ink of at least one color is filled in the grooves; or the precise microstructure includes A plurality of grooves and land areas, the grooves are filled with ink of at least one color.

The first microstructure layer 232 and the second microstructure layer 273 in Fig. 23 and Fig. 24 are only schematic, and the actual structure of the precise microstructure on the first microstructure layer 232 and the second microstructure layer 273 is shown in Fig. 4a- 4d, Figures 5a-5d and Figure 9, but not limited thereto.

In the embodiment of the anti-counterfeiting card, the material of the first microstructure layer and the second microstructure layer is resin, and the resin is coated on the base film layer, and the precise microstructure preferably has good bonding properties with the base film layer Resin, more preferably, the precise microstructure is a UV curable resin layer, which is conducive to its non-deformation during heat and pressure lamination.

In an embodiment of the anti-counterfeit 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 PC film or modified PET film, the material of the second endorsement layer is PC film or modified PET film, and multiple images and/or graphics are arranged on the first endorsement layer and/or the second endorsement layer Text, which supports real-time endorsement of multiple images and graphic texts, and graphic texts include one or more of three-dimensional portraits, three-dimensional graphics, allotropic 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 brightness; 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. 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 brightness; 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. 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.

In one embodiment, the method for preparing an anti-counterfeit card includes:

Step 1: Prepare the first composite layer. Concretely, at first one side of the first base film layer 231 is coated with a resin layer (UV curable resin layer), and the first microstructure layer 232 is made by transfer printing or gravure printing on the resin layer, on the first microstructure layer 232 there is Precise microstructure, the precise microstructure includes a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and the grooves are filled with ink; or the precise microstructure on the first microstructure layer 232 includes a plurality of grooves and In the platform area, the grooves are filled with ink; the first coating layer 233 is formed by vacuum coating on the first microstructure layer 232; the first protective layer 234 is coated on the first coating layer 233 to obtain a first composite layer.

Step 2: Prepare the second composite layer.

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

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

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, and the first base film layer 231 in the first composite layer 23 is set on On the first endorsement layer 24 , the second endorsement layer 26 is disposed on the second base film layer 271 in the second composite layer 27 .

It may also include step 4: perform image signature on the first endorsement layer 24 and the second endorsement layer 26 according to real-time needs.

Step 4 is not necessary, and in other embodiments, step 4 may not be included.

The texture of the anti-counterfeiting card can achieve dynamic and embossed multi-color three-dimensional dynamic image effects with high gloss through precise photolithography, and the anti-counterfeiting effect is good; Anti-counterfeiting, and improve the performance of anti-counterfeiting cards. 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 integrally laminated, the process is simple and stable, and the quality of the anti-counterfeit card is excellent.

The multi-color three-dimensional dynamic image of the anti-counterfeiting card in this embodiment is realized by a kind of ultra-precision micro-gravure printing. The method and precision of ultra-precision micro-gravure printing are quite different from the existing gravure printing. About 50um, the precision of ultra-precision dimple printing technology is in the scale range of 5-50um, and the controllable range is large. The texture on the image can achieve dynamic and embossed effects such as dynamics and embossing through precise photolithography. The production method of this embodiment It is to apply UV resin glue on the flexible film (ie, the base film layer), use a stencil with a precise microstructure to emboss a 5-50 micron deep groove on the surface of the UV resin glue, and apply the color ink by scraping or coating. Fill in the groove, wash off the protruding part of the ink, so that the micro-nano substructure shows the color, and the color and special effect are presented at the same time, which is essentially different from ordinary gravure printing. The anti-counterfeiting card produced by this technology has better anti-counterfeiting effect. Great expressiveness and excellent quality.

decorative texture

Decorative textures can be applied in fields such as home appliances, mobile phone back panels, cosmetic top covers, or car decorations.

Please refer to Figures 25-29, Figures 25-29 are structural schematic diagrams 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, at least one The composite layer includes fine microstructures.

As shown in Figure 25, the present invention provides the decorative texture structure of the first embodiment. The decorative texture structure includes a base layer 40, a first adhesive layer 41, a first composite layer 42, and a first composite layer arranged in sequence from top to bottom. The 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 the first microstructure 422 is provided with a precision microstructure, including the first precision The microstructure main layer 4221, the first coating layer 4222 and the first ink layer 4223; the first precision microstructure main layer 4221 is provided with a plurality of micro-nano substructures, and the micro-nano substructures are provided with grooves, or the first precision microstructure The structural main layer 4221 is provided with a plurality of grooves and platform areas; 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, the first The grooves on the coating layer 4222 correspond to the grooves of the first precision microstructure body layer 4221 one by one, and the ink is filled in the grooves of the first coating layer 4222 .

As shown in Figure 26, the present invention provides the decorative texture structure of the second embodiment. The decorative texture structure includes a base layer 40, a first glue layer 41, a first composite layer 42, a second glue layer arranged in sequence from top to bottom. Layer 43 and second composite layer 44. The base layer 40, the first adhesive layer 41 and the first composite layer 42 are the same as the embodiment shown in FIG. The second film layer 441 is fixedly arranged on the first composite layer 42 through the second glue layer 43, and the second microstructure layer 442 is provided with precise microstructures or other microstructures, such as laser micro-nano structures, sub-silver micro-nano structures, etc., It is not limited to this. Taking the precision microstructure disposed on the second micro-nanostructure layer 442 as an example, it includes a second precision microstructure body 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 precision microstructure main layer 4421, the grooves of the second coating layer 4422 correspond to the grooves of the second precision microstructure main layer 4421, and the second ink layer 4423 is filled in the groove on the second coating layer 4422 .

As shown in Figure 27, the present invention provides a decorative texture structure in a third embodiment, which 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 thin film layer 421, a first microstructure layer 422 and a first coating layer 423 arranged in sequence from top to bottom, and a precision microstructure is arranged on the first microstructure layer 422, which includes a plurality of The micro-nano substructure is provided with a groove, and the groove is filled with ink; the first thin film layer 421 is fixed on the base layer 40 through the first adhesive layer 41, and the silk screen layer 45 is arranged on the first coating layer 423 superior.

As shown in Figure 28, the present invention provides the decorative texture structure of the fourth embodiment, which includes a base layer 40, a first adhesive layer 41, a first composite layer 42, a second adhesive layer arranged in sequence from top to bottom. Layer 43 and second composite layer 44. The base layer 40, the first adhesive layer 41, and the first composite layer 42 are the same as the embodiment shown in FIG. The second microstructure layer 442 is provided with precise microstructures or other microstructures, such as laser micro-nanostructures, sub-silver micro-nanostructures, etc., but not limited thereto. The second microstructure layer 442 is provided with a precision microstructure as an example, 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 substructures, grooves are arranged on the micro-nano substructures, or a plurality of grooves and platform areas are arranged on the second precision microstructure main layer 4421, and the second coating layer 4422 is an imitation second precision microstructure main layer The conformal structure of the surface shape of 4421, the grooves on the second coating layer 4422 correspond to the grooves on the second precision microstructure main layer 4421, and the second ink layer 4423 fills the grooves on the second coating layer 4422 Inside, the second film layer 441 is fixed on the first composite layer 42 through the second adhesive layer 43 .

As shown in Figure 29, the present invention provides a decorative texture structure in a fifth embodiment, which includes 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. layer. The first composite layer 42 includes a first film layer 421 and a first microstructure layer 422; the first microstructure layer 422 is provided with a precise microstructure, and the first microstructure layer 422 includes a first precision microstructure main body layer 4221, a first The coating layer 4222 and the first ink layer 4223; the first precision microstructure main layer 4221 is provided with a plurality of micro-nano substructures, the micro-nano substructures are provided with grooves, or the first precision microstructure main layer 4221 is provided with complex a groove and a platform area; the first coating layer 4222 is a conformal structure imitating the surface shape of the precision microstructure main body layer 4221, and the first coating layer 4222 is provided with grooves, and the grooves on the first coating layer 4222 are connected with the first coating layer 4222. The grooves of the first precise microstructure body layer 4221 correspond to each other, and the ink is filled in the grooves of the first coating layer 4222 . The second composite layer is provided with precise microstructures or other micronanostructures, such as laser micronanostructures, sub-silver micronanostructures, etc., but not limited thereto. Taking the laser micro-nano structure as an example, the second composite layer only includes the second micro-structure layer 442', which includes the second micro-nano structure main layer 4421', the second coating layer 4422' and the second ink layer 4423'; the second The coating layer 4422' is a conformal structure imitating the surface shape of the second micro-nano structure main layer 4421', and the grooves on the second coating layer 4422' and the micro-nano structure grooves on the second micro-nano structure main layer 4421' In one-to-one correspondence, the second ink layer 4423 ′ is filled in the groove on the second coating layer 4422 ′, and the second micro-nano structure main layer 4421 ′ is disposed on the first composite layer 42 .

The first microstructure layer 422 and the second microstructure layer 442, 442' in Fig. 25-Fig. For the actual structure, refer to Fig. 4a-4d, Fig. 5a-5d and Fig. 9, but not limited thereto.

In the embodiment of Fig. 25-Fig. 29, the base layer is a transparent flat glass or a composite board; the first adhesive layer and the second adhesive layer are OCA optical adhesive layers; the first thin film layer and the second thin film layer are PET film, and the thickness range The thickness range is 25μm-200μm, and the preferred thickness range is 50μm-100μm; the first microstructure layer and the second microstructure layer are UV adhesive layers; the first ink layer is nano-ink, and the nano-ink is filled into the micro-nano substructure by metal scraper printing In the groove; the second ink layer is nano ink, made by screen printing process, the thickness range of the second ink layer is 10μm-15μm, 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 materials such as brightness enhancement film, antireflection coating, SiO2 and indium, and the thickness range is 80nm-260nm, and the preferred thickness is 140nm, in order to realize brightness enhancement, antireflection and medium color Function, the first coating layer and the second coating layer are prepared by evaporation or vacuum sputtering; the silk screen layer is an ink layer, which is made by screen printing process, the thickness of the screen printing layer is 10μm-15μm, and the silk screen layer is white ink or Black ink can realize the function of covering the substrate.

The decorative texture of the present invention uses micro-nano photolithography technology to transfer the micro-nano texture on the substrate, and by setting a precise microstructure on the substrate, it presents three-dimensional, light and shadow, and colorful effects. It is softer than the traditional gradient color, more visually comfortable, and can have a textured glare effect, which can produce more effects and wider application fields, such as mobile phone decoration, car interior, cosmetic top cover, home appliance surface texture, etc. Wait. It solves the problem in the prior art that the color of the pattern is relatively monotonous, only the superimposed gradient effect of 2-3 colors can be realized, and the problem of multi-color change cannot be achieved. Figure 30 is an effect diagram of an embodiment, the decorative texture prepared in this way presents the effect of ink painting.

The same layer name in the above different products or embodiments does not mean that the relevant parameters such as material, composition, thickness or pattern must be the same, and may be the same or different, and can be selected or produced according to actual needs. The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will 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, it can be directly on the other element or also be directly on the other element. Intermediate elements may be present. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", The orientation or positional relationship indicated by "horizontal" is based on the orientation or positional relationship shown in the drawings, and is only for the clarity of the technical solution and the convenience of description, so it should not be understood as a limitation of the present invention.

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

As used herein, the terms "comprises", "comprises" or any other variation thereof are intended to cover a non-exclusive inclusion of elements other than those listed and also other elements not expressly listed.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (14)

1. A hot stamping film, characterized in that, comprises a base film layer, a precision microstructure layer, a medium layer and a hot-melt adhesive layer arranged successively from top to bottom; the precision microstructure layer is arranged on the surface away from the release layer There is a precise microstructure, and the precise microstructure includes a plurality of micro-nano substructures, and the periods of the plurality of micro-nano substructures are arranged according to preset rules to present a three-dimensional relief effect; the micro-nano substructure is provided with at least one concave Groove, the groove includes at least two opposite side walls and a bottom, and ink is arranged in the groove for presenting color effects; the period of the micro-nano substructure is arranged according to preset rules, including according to the Fresnel law Arranged, or arranged according to the law of equal-width slicing and projection; the micro-nano substructure may also include at least one inclined surface, which is used to reflect light and produce light and shadow effects; each of the micro-nano substructures The ratio of the groove width to the period of the micro-nano substructure is K, and the ratio K of different micro-nano substructures is the same. 2. The hot stamping film according to claim 1, further comprising a release layer, the release layer is arranged between the base film layer and the precision microstructure layer. 3. The hot stamping film as claimed in claim 1 or 2, wherein the ink is a nano-ink, and the nano-ink is partially or fully set in the groove of the micro-nano substructure by means of transfer printing or gravure printing. The ink particle size is smaller than the width of the grooves on the micro-nano substructure. 4. The hot stamping film as claimed in claim 1 or 2, characterized in that the hot stamping film has a positioning color mark, the positioning color mark is located on both sides of the precision microstructure layer, and the positioning color mark is convenient for the hot stamping process to identify the hot stamping. 5. hot stamping film as claimed in claim 1 or 2 is characterized in that, described medium layer is metal material or transparent medium, and described metal material is aluminum or chromium, and described transparent medium is zinc sulfide or magnesium fluoride ; The base film layer is a PET film layer. 6. A transfer film, characterized in that, comprises a base film layer, a precision microstructure layer and a dielectric layer arranged in sequence from top to bottom; the precision microstructure layer is provided with a surface for forming a pattern area away from the base film layer Precise microstructure, the precise microstructure includes a plurality of micro-nano substructures, the micro-nano substructures are provided with grooves, and the grooves are filled with ink; the periods of the micro-nano substructures are arranged according to preset rules , including arranged according to the Fresnel law, or arranged according to the law of equal-width slicing projection; the micro-nano substructure may also include at least one inclined surface, and the inclined surface is used to reflect light and produce light and shadow effects; each The ratio of the groove width on the micro/nano substructure to the period of the micro/nano substructure is K, and the ratio K is the same for different micro/nano substructures. 7. The transfer film according to claim 6, wherein the dielectric layer is a metal material or a transparent medium, the metal material is aluminum or chromium, and the transparent medium is zinc sulfide or magnesium fluoride; The base film layer is a PET film layer. 8. transfer film as claimed in claim 6, is characterized in that, ink is nano-ink, and nano-ink is arranged in the groove of micro-nano substructure partly or full plate by the mode of transfer printing or gravure printing, and nano-ink particle size smaller than the width of the groove on the micro-nano substructure. 9. A composite paper, characterized in that, comprises a base film layer, a precision microstructure layer, a medium layer, a hot-melt adhesive layer and a backing paper layer arranged successively from top to bottom; the precision microstructure layer is far away from the base film layer The surface is provided with a precise microstructure for forming a graphic area, the precise microstructure includes a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and the grooves are filled with ink; the micro-nano substructures Periods are arranged according to preset rules, including Fresnel rules, or equal-width slicing projection rules; the micro-nano substructure may also include at least one inclined surface, which is used to reflect light , producing a light and shadow effect; the ratio of the groove width on each micro-nano substructure to the period of the micro-nano substructure is K, and the ratio K of different micro-nano substructures is the same. 10. The composite paper according to claim 9, wherein the medium layer is a metal material or a transparent medium, the metal material is aluminum or chromium, and the transparent medium is zinc sulfide or magnesium fluoride; The base film layer is a PET film layer. 11. composite paper as claimed in claim 9, is characterized in that, ink is nano-ink, and nano-ink is arranged in the groove of micro-nano substructure partly or full version by the mode of transfer printing or gravure printing, and nano-ink particle size smaller than the width of the groove on the micro-nano substructure. 12. A kind of transfer paper, it is characterized in that, comprises the precision microstructure layer, medium layer, hot-melt glue layer and backing paper layer that are arranged successively from top to bottom; The lower surface of precision microstructure layer is provided with precision microstructure, The precise microstructure includes a plurality of micro-nano substructures, grooves are arranged on the micro-nano substructures, and the grooves are filled with ink; the periods of the micro-nano substructures are arranged according to preset rules, including Fresnel Arranged regularly, or arranged according to the law of equal-width slicing projection; the micro-nano substructure may also include at least one inclined surface, which is used to reflect light and produce light and shadow effects; each of the micro-nano substructures The ratio of the groove width to the period of the micro-nano substructure is K, and the ratio K of different micro-nano substructures is the same. 13. The transfer paper according to claim 12, wherein the medium layer is a metal material or a transparent medium, the metal material is aluminum or chromium, and the transparent medium is zinc sulfide or magnesium fluoride. 14. transfer paper as claimed in claim 12, it is characterized in that, ink is nano-ink, and nano-ink is arranged in the groove of micro-nano substructure partly or full plate by the mode of transfer printing or gravure printing, and nano-ink particle size smaller than the width of the groove on the micro-nano substructure.

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