CN116004055A - Water-sensitive anti-counterfeiting ink, anti-counterfeiting grating and preparation method of anti-counterfeiting grating - Google Patents
Water-sensitive anti-counterfeiting ink, anti-counterfeiting grating and preparation method of anti-counterfeiting grating Download PDFInfo
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- CN116004055A CN116004055A CN202310012055.3A CN202310012055A CN116004055A CN 116004055 A CN116004055 A CN 116004055A CN 202310012055 A CN202310012055 A CN 202310012055A CN 116004055 A CN116004055 A CN 116004055A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses water-sensitive anti-counterfeiting ink, an anti-counterfeiting grating and a preparation method of the anti-counterfeiting grating, wherein the raw materials for preparing the water-sensitive anti-counterfeiting ink comprise the following components in parts by mass: 20-35 parts of first binder, 5-10 parts of second binder, 40-60 parts of solvent and 15-35 parts of water-sensitive expansion material, wherein the particle size of the water-sensitive expansion material is 0.1-10 microns. After the water-sensitive anti-counterfeiting ink is printed and dried, the ink is opaque, when a user smears liquid water on the surface layer of the ink, the water-sensitive expansion material absorbs water and expands in volume, so that the volume form of the ink is increased, the water-sensitive anti-counterfeiting ink is changed from opaque to transparent in the volume expansion process of the water-sensitive expansion material, and the change is repeatable. The anti-counterfeiting grating comprises a water-sensitive anti-counterfeiting layer, and the water-sensitive anti-counterfeiting layer is made of the water-sensitive anti-counterfeiting ink. The preparation method of the anti-counterfeiting grating is used for preparing the anti-counterfeiting grating.
Description
Technical Field
The invention relates to the technical field of printing ink, in particular to water-sensitive anti-counterfeiting printing ink, an anti-counterfeiting grating and a preparation method of the anti-counterfeiting grating.
Background
Currently, the anti-counterfeit inks of the prior art can be broadly divided into several categories: the anti-counterfeiting ink is only changed in color in the verification process, but not changed in volume form, so that the anti-counterfeiting effect is monotonous.
The invention patent with publication number of CN101877196B discloses a manufacturing method of a shape memory anti-counterfeiting mark, but the anti-counterfeiting mark prepared by adopting the technical scheme is invalid after one-time verification and cannot be repeatedly verified.
Therefore, it is necessary to provide a water-sensitive anti-counterfeit ink, which can change the volume form and can repeatedly verify the authenticity when verifying the authenticity.
Disclosure of Invention
The invention provides water-sensitive anti-counterfeiting ink which is used for solving the problems.
In addition, the invention also provides an anti-counterfeiting grating and a preparation method of the anti-counterfeiting grating.
The water-sensitive anti-counterfeiting ink comprises the following raw materials in parts by mass:
wherein the particle size of the water-sensitive expansion material is 0.1-10 microns.
In one embodiment, the water sensitive intumescent material has a water content of 3% to 10%.
In one embodiment, 1 to 3 parts of an antifoaming agent is also included.
In one embodiment, 1 to 2 parts of a leveling agent is also included.
In one embodiment, the water sensitive intumescent material is selected from the group consisting of: at least one of sodium polyacrylate, starch-acrylonitrile graft polymer, starch-acrylic acid graft polymer, cellulose-acrylonitrile graft polymer, carboxymethyl cellulose cross-linked product, polyvinyl alcohol cross-linked product, acrylonitrile-vinyl acetate copolymer saponification product, polyvinyl acid salt, methyl methacrylate-vinyl acetate copolymer saponification product, polyvinyl alcohol and dipropylene cross-linked product, and isobutylene-maleic anhydride alternating copolymer.
Above-mentioned water-sensitive anti-fake ink, after the printing is dry, the printing ink is opaque, when the user scribbles liquid water at the printing ink top layer, liquid water can permeate to water-sensitive anti-fake ink to with water-sensitive expansion material contact, this moment: (1) The volume of the water-sensitive expansion material expands after absorbing water, so that the volume form of the ink is increased; in the volume expansion process of the water-sensitive expansion material, the water-sensitive anti-counterfeiting ink is changed from opaque to transparent; (2) After a period of time, the water-sensitive expansion material loses water along with the volatilization and drying of the water, the volume form of the water-sensitive expansion material is reduced, and the water-sensitive anti-counterfeiting ink is changed from transparent to opaque.
A security grating, comprising:
a base layer;
preprocessing a 3D image-text layer, and laminating the 3D image-text layer on the upper surface of the basal layer;
the water-sensitive anti-counterfeiting layer is arranged on one side of the image-text layer far away from the basal layer in a lamination way, and is formed by printing the water-sensitive anti-counterfeiting ink according to any one of claims 1-5; and
the covering layer is arranged on one side, far away from the image-text layer, of the water-sensitive anti-counterfeiting layer in a stacking mode, and a plurality of regularly distributed hollowed-out parts are arranged on the covering layer.
In one embodiment, the material used for preparing the covering layer is selected from any one of UV gloss oil, PET film, BOPP film and aqueous paraffin.
In one embodiment, the thickness of the cover layer is 0.001mm to 0.05mm.
In one embodiment, the hollow portion is circular, regular polygon or linear.
Above-mentioned anti-fake grating, before verifying, anti-fake grating's outward appearance is plane and opaque, and at this moment, anti-fake grating does not show 3D effect, after the user smears liquid water in anti-fake grating outside, liquid water permeates in to the water-sensitive anti-fake layer through fretwork portion to with water-sensitive swelling material contact, this moment: (1) On one hand, the volume of the water-sensitive expansion material in the water-sensitive anti-counterfeiting layer below the hollowed-out part is obviously expanded after absorbing water to form a bulge, and the water-sensitive anti-counterfeiting layer is changed from opaque to transparent in the process of expanding the volume of the water-sensitive expansion material; on the other hand, after the water-sensitive expansion material in the water-sensitive anti-counterfeiting layer below the covering layer permeates and absorbs a small amount of water through the side edge, the water-sensitive anti-counterfeiting ink is not obviously expanded, and the water-sensitive anti-counterfeiting ink is changed from opaque to transparent, so that a grating effect is formed, and at the moment, a user can see the 3D effect through the anti-counterfeiting grating. (2) After a period of time, the water-sensitive expansion material loses water along with the volatilization and drying of the water, the volume form of the water-sensitive expansion material is reduced, and in the water loss process of the water-sensitive expansion material, the water-sensitive anti-counterfeiting layer is changed from transparent to opaque, and the 3D effect is lost.
A preparation method of an anti-counterfeiting grating comprises the following steps:
providing a basal layer, wherein the basal layer is provided with a pretreatment 3D image-text;
a water-sensitive anti-counterfeiting layer is arranged above the basal layer in a lamination way, and is formed by printing and drying the water-sensitive anti-counterfeiting ink according to any one of claims 1-5;
a covering layer is arranged above the water-sensitive anti-counterfeiting layer in a lamination mode, and a plurality of regularly distributed hollowed-out parts are arranged on the covering layer.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an anti-counterfeit grating before verification;
FIG. 2 is a schematic diagram of the anti-counterfeit grating shown in FIG. 1 during verification;
FIG. 3 is a flow chart of a method for manufacturing an anti-counterfeiting grating according to an embodiment.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" or "in communication" with another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper," "lower," "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The water-sensitive anti-counterfeiting ink is described in further detail below mainly with reference to the accompanying drawings and specific examples.
The water-sensitive anti-counterfeiting ink comprises 20-35 parts of first connecting material, 5-10 parts of second connecting material, 40-60 parts of solvent and 15-35 parts of water-sensitive expansion material.
The first connecting material is used in an amount of 20-35 parts by weight, and can be dissolved in a solvent for enabling the anti-counterfeiting water-sensitive anti-counterfeiting ink to be dried to form a film after printing.
Optionally, the first type of binder is selected from: at least one of acrylic resin, polyurethane epoxy resin, polyketone resin and polyamide resin.
The second binder is used in an amount of 5 to 10 parts by mass. The second connecting material is used for adjusting the elastic deformation capability of the anti-counterfeiting ink after film formation, when the water-sensitive expansion material expands due to the water absorption volume, the film layer of the water-sensitive anti-counterfeiting ink can expand along with the expansion, and when the water-sensitive expansion material reduces due to the water loss volume, the film layer of the water-sensitive anti-counterfeiting ink can reduce along with the expansion, so that the film layer still keeps integrity in the water absorption expansion and water loss shrinkage processes of the water-sensitive anti-counterfeiting ink.
Optionally, the second binder is selected from: at least one of linseed oil, tung oil, mineral oil, silicone resin and rosin modified phenolic resin.
The solvent is used in an amount of 40-60 parts by weight, and is used for dissolving the first connecting material to enable the printing ink to be colloid, so that the printing suitability requirement is met, and micropores can be formed in the water-sensitive anti-counterfeiting printing ink layer in the solvent volatilization process, so that liquid water can permeate into the center of the anti-counterfeiting printing ink layer during verification.
Specifically, the solvent is an organic solvent, and the organic solvent does not cause the volume form change of the water-sensitive expansion material, so that the hardness change of the water-sensitive expansion material is caused, the compression deformation in the printing process is avoided, and the water-sensitive expansion material keeps the integrity of particles.
Alternatively, solvents include, but are not limited to: at least one of ethanol, ethylene glycol, isopropanol, butanol, pentanol, cyclohexanol, acetone, and cyclohexanone.
The water-sensitive expansion material is 15-35 parts by weight, is solid transparent particles, is insoluble in solvents, has a particle size of 0.1-10 microns, and meets the printing requirements by limiting the particle size of the water-sensitive expansion material.
Specifically, after the water-sensitive expansion material is contacted with liquid water, the volume of the water-sensitive expansion material can obviously expand by a plurality of times or even tens of times in a shorter time, so that the volume of the water-sensitive anti-counterfeiting ink is increased; when the water-sensitive material loses liquid water, the volume is obviously reduced, so that the volume of the water-sensitive anti-counterfeiting ink is reduced.
Alternatively, the water sensitive intumescent material includes, but is not limited to: sodium polyacrylate, starch-acrylonitrile graft polymer, starch-acrylic acid graft polymer, cellulose-acrylonitrile graft polymer, carboxymethyl cellulose crosslinked product, polyvinyl alcohol crosslinked product, acrylonitrile-vinyl acetate copolymer saponified product, polyvinyl acid salt, methyl methacrylate-vinyl acetate copolymer saponified product, polyvinyl alcohol and dipropylene crosslinked product, isobutylene-maleic anhydride alternating copolymer, and the like.
Preferably, the water-sensitive intumescent material has a water content of 3% to 10%, and the particle size of the water-sensitive intumescent material has a small amount of expansion, but the hardness of the particles does not change significantly, and therefore the pressure during printing is insufficient to destroy the integrity of the particles. When the water-sensitive anti-counterfeiting ink is dried, the particle size of the water-sensitive expansion material is reduced along with the water loss of the water-sensitive expansion material, so that the water-sensitive expansion material is positioned in a micro cavity, and on one hand, incident light is easy to diffuse reflection on the wall of the cavity due to the existence of the micro cavity, so that the opacity of the water-sensitive anti-counterfeiting ink is further enhanced, and the visual contrast can be further increased in the verification process; on the other hand, in the verification process, after the liquid water is coated on the surface layer of the water-sensitive anti-counterfeiting ink, the liquid water can quickly enter the microscopic cavity under the capillary action and fully contact with the water-sensitive expansion material, so that the volume of the water-sensitive expansion material is quickly expanded, and the verification time of the water-sensitive anti-counterfeiting ink is shortened.
In another embodiment, the water sensitive anti-forgery ink further comprises 1 to 3 parts of an antifoaming agent for preventing bubbles from being generated in the ink.
Optionally, defoamers include, but are not limited to: polyether block type defoamer, organosilicon defoamer and composite defoamer.
In another embodiment, the water-sensitive anti-counterfeiting ink further comprises 1-2 parts of a leveling agent, wherein the leveling agent can enable the water-sensitive anti-counterfeiting ink to maintain a leveling state in a printing process.
Optionally, leveling agents include, but are not limited to: polydimethyl siloxane, fluorinated siloxane, silicone oil, polyether polyester modified organosiloxane, alkyl modified organosiloxane and acrylic ester.
Above-mentioned water-sensitive anti-fake ink, after the printing is dry, the printing ink is opaque, when the user scribbles liquid water at the printing ink top layer, liquid water can permeate to water-sensitive anti-fake ink to with water-sensitive expansion material contact, this moment: (1) The volume of the water-sensitive expansion material expands after absorbing water, so that the volume form of the ink is increased; in the volume expansion process of the water-sensitive expansion material, as the pores in the water-sensitive anti-counterfeiting ink are filled with liquid water, the water-sensitive anti-counterfeiting ink is changed from opaque to transparent; (2) After a period of time, the water-sensitive expansion material loses water along with the volatilization and drying of the water, the volume form of the water-sensitive expansion material is reduced, and the water-sensitive anti-counterfeiting ink is changed from transparent to opaque.
Referring to fig. 1 to 2, an anti-counterfeiting grating according to an embodiment includes: a basal layer 10, a pretreatment 3D image-text layer 20, a water-sensitive anti-counterfeiting layer 30 and a covering layer 40.
The substrate layer 10 is used for carrying the pre-processed 3D graphics layer 20, and optionally, materials used for preparing the substrate layer 10 include, but are not limited to: paper, PET sheet, PVC sheet.
The pre-processing 3D image-text layer 20 is stacked on the substrate layer 10, and the pre-processing 3D image-text layer 20 can be printed in any area of the substrate layer 10, and can be a partial area or a whole area. The printing mode of the pre-processing 3D graphic layer 20 is selected from one of offset printing, flexography, gravure, silk screen printing and digital printing.
The water-sensitive anti-counterfeiting layer 30 is arranged above the preprocessing 3D image-text layer 20 in a lamination way, the water-sensitive anti-counterfeiting layer 30 is formed by printing and drying any one of the water-sensitive anti-counterfeiting ink, and the thickness of the water-sensitive anti-counterfeiting layer 30 is 0.01-0.2 mm and can be obtained through offset printing, gravure printing or silk screen printing.
The covering layer 40 is arranged on the water-sensitive anti-counterfeiting layer 30 in a stacked manner, a plurality of regularly distributed hollowed-out parts 41 are arranged on the covering layer 40, when the surface of the anti-counterfeiting grating is coated with liquid water, the liquid water cannot penetrate through the covering layer 40 to the water-sensitive anti-counterfeiting layer 30, but can penetrate through the hollowed-out parts 41 to the water-sensitive anti-counterfeiting layer 30, and when the liquid water contacts with the water-sensitive expansion material in the water-sensitive anti-counterfeiting layer 30, the water-sensitive expansion material absorbs water and expands in volume, so that the effect of local expansion of the water-sensitive anti-counterfeiting layer 30 is formed.
In particular, the cover layer 40 is made of a hydrophobic material or a dense material so that liquid water cannot pass through the cover layer 40 to contact the water-sensitive anti-counterfeiting layer 30. Optionally, materials for preparing the cap layer 40 include, but are not limited to: UV gloss oil, PET film, BOPP film and water-based paraffin.
Alternatively, the thickness of the cover layer 40 is 0.001mm to 0.05mm, and by limiting the thickness of the cover layer 40, it is ensured that the water-sensitive anti-counterfeiting layer 30 forms a significant height difference with the cover layer 40 after swelling.
Preferably, the method comprises the steps of. The material used for preparing the covering layer 40 is UV light oil, the UV light oil is liquid before solidification, and after the UV light oil is coated on the surface of the water-sensitive anti-counterfeiting layer 30, on one hand, the UV light oil can longitudinally permeate into the water-sensitive anti-counterfeiting layer 30 so as to fill the pores in the water-sensitive anti-counterfeiting layer 30, and further the water-sensitive anti-counterfeiting layer 30 coated with the UV light oil part is transparent after the UV light oil is solidified, so that the water-sensitive anti-counterfeiting layer 30 positioned below the covering layer 40 is not expanded in volume after contacting with liquid water; on the other hand, the UV varnish can be slightly diffused in the transverse direction before curing, and after curing, the affinity of the water-sensitive anti-counterfeiting layer 30 under the hollowed-out part 41 to liquid water decreases from the center to the periphery due to the unbalance of the diffusion, so that the volume expansion degree of the water-sensitive anti-counterfeiting layer 30 under the hollowed-out part 41 decreases from the center to the periphery after contacting with the liquid water, and the characteristic is particularly suitable for forming a dot grating.
Alternatively, the hollowed-out portion 41 is circular, regular polygonal or linear in shape. After the round hollowed-out part 41 is smeared with liquid water, the water-sensitive anti-counterfeiting layer 30 can form a dot grating, so that a 3D scene is formed to have omni-directionality; after the regular polygon hollowed-out part 41 is smeared with liquid water, the water-sensitive anti-counterfeiting layer 30 can form a polygonal dot-shaped grating, and the formed 3D scene has polygonal directivity; after the linear hollowed-out parts 41 are coated with liquid water, the water-sensitive anti-counterfeiting layer 30 can form slit gratings, and the formed 3D scene has a bidirectional shape.
Before verification, the appearance of the anti-counterfeiting grating is planar and opaque, at this time, the anti-counterfeiting grating does not show a 3D effect, and after a user smears liquid water outside the anti-counterfeiting grating, the liquid water permeates into the water-sensitive anti-counterfeiting layer 30 through the hollowed-out part 41 and contacts with the water-sensitive expansion material, at this time: (1) In a shorter time, on one hand, the volume of the water-sensitive expansion material in the water-sensitive anti-counterfeiting layer 30 below the hollowed-out part 41 is obviously expanded after absorbing water to form a bulge, and the water-sensitive anti-counterfeiting layer 30 is changed from opaque to transparent in the process of expanding the volume of the water-sensitive expansion material; on the other hand, after the water-sensitive swelling material in the water-sensitive anti-counterfeiting layer 30 below the cover layer 40 absorbs a small amount of moisture through side permeation, the water-sensitive anti-counterfeiting ink is not swelled significantly, and the water-sensitive anti-counterfeiting ink is changed from opaque to transparent, so that a grating effect is formed, and at this time, a user can see the 3D effect through the anti-counterfeiting grating. (2) After a period of time, the water-sensitive expansion material loses water along with the volatilization and drying of the water, the volume form of the water-sensitive expansion material is reduced, and in the water loss process of the water-sensitive expansion material, the water-sensitive anti-counterfeiting layer 30 is changed from transparent to opaque, and the 3D effect is disappeared.
Referring to fig. 3, a method for preparing an anti-counterfeiting grating according to an embodiment includes the following steps:
step S10: a base layer 10 is provided, and a preprocessing 3D image-text is arranged on the base layer 10.
Specifically, the substrate layer 10 may be paper, PET sheet, PVC sheet or other material printed with a pre-processed 3D image, and the pre-processed 3D image may be offset, gravure, flexo or digital printed.
Step S20: a water-sensitive anti-counterfeiting layer 30 is laminated above the substrate layer 10, and the water-sensitive anti-counterfeiting layer 30 is formed by printing and drying the water-sensitive anti-counterfeiting ink according to any one of the above.
Specifically, a water-sensitive anti-counterfeiting layer 30 is arranged above the pretreated 3D graphics of the substrate layer 10, and the water-sensitive anti-counterfeiting layer 30 is obtained by printing or coating.
Step S30: a covering layer 40 is laminated above the water-sensitive anti-counterfeiting layer 30, and a plurality of regularly distributed hollowed-out parts 41 are arranged on the covering layer 40.
Specifically, a covering layer 40 is disposed above the water-sensitive anti-counterfeiting layer 30, and a plurality of regularly distributed hollowed-out parts 41 are disposed on the covering layer 40, so that after the anti-counterfeiting grating surface is coated with liquid water, the liquid water cannot penetrate downwards through the covering layer 40, but can penetrate downwards through the hollowed-out parts 41, thereby forming a local expansion effect.
Specifically, the cover layer 40 is made of a hydrophobic material or a dense material so that liquid water cannot contact the water-sensitive anti-counterfeiting layer 30 through the cover layer 40. Optionally, materials for preparing the cap layer 40 include, but are not limited to: UV gloss oil, PET film, BOPP film and water-based paraffin.
The following are specific examples.
Example 1
The embodiment provides a water-sensitive anti-counterfeiting ink, which is prepared from the following raw materials in parts by mass: 20 parts of a first binder acrylic resin, 5 parts of a second binder linseed oil, 40 parts of solvent ethanol and 15 parts of a water-sensitive swelling material sodium polyacrylate. Wherein the particle size of the water-sensitive swelling material is 0.1 micron.
Above-mentioned water-sensitive anti-fake ink, after the printing is dry, the printing ink is opaque, when the user scribbles liquid water at the printing ink top layer, liquid water can permeate to water-sensitive anti-fake ink to with water-sensitive expansion material contact, this moment: (1) The volume of the water-sensitive expansion material expands after absorbing water, so that the volume form of the ink is increased; in the volume expansion process of the water-sensitive expansion material, as the pores in the water-sensitive anti-counterfeiting ink are filled with liquid water, the water-sensitive anti-counterfeiting ink is changed from opaque to transparent; (2) After a period of time, the water-sensitive expansion material loses water along with the volatilization and drying of the water, the volume form of the water-sensitive expansion material is reduced, and the water-sensitive anti-counterfeiting ink is changed from transparent to opaque.
Referring to fig. 1-2, the embodiment further provides an anti-counterfeiting grating, which comprises a substrate layer 10, a pretreated 3D image-text layer 20, a water-sensitive anti-counterfeiting layer 30 and a covering layer 40 which are stacked from bottom to top, wherein the substrate layer 10 is made of paper, the pretreated 3D image-text layer 20 is arranged on the paper, the water-sensitive anti-counterfeiting layer 30 is formed by printing and drying the water-sensitive anti-counterfeiting ink provided by the embodiment, the thickness of the water-sensitive anti-counterfeiting ink is 0.01mm, the covering layer 40 is formed by printing with UV light oil, and the hollowed-out portion 41 is round.
Before verification, the appearance of the anti-counterfeiting grating is planar and opaque, at this time, the anti-counterfeiting grating does not show a 3D effect, and after a user smears liquid water outside the anti-counterfeiting grating, the liquid water permeates into the water-sensitive anti-counterfeiting oil layer through the hollowed-out part 41 and contacts with the water-sensitive expansion material, at this time: (1) In a shorter time, on one hand, the volume of the water-sensitive expansion material in the water-sensitive anti-counterfeiting layer 30 below the hollowed-out part 41 is obviously expanded after absorbing water to form a bulge, and the water-sensitive anti-counterfeiting layer 30 is changed from opaque to transparent in the process of expanding the volume of the water-sensitive expansion material; on the other hand, after the water-sensitive swelling material in the water-sensitive anti-counterfeiting layer 30 below the cover layer 40 absorbs a small amount of moisture through side permeation, the water-sensitive anti-counterfeiting ink is not swelled significantly, and the water-sensitive anti-counterfeiting ink is changed from opaque to transparent, so that a grating effect is formed, and at this time, a user can see the 3D effect through the anti-counterfeiting grating. (2) After a period of time, the water-sensitive expansion material loses water along with the volatilization and drying of the water, the volume form of the water-sensitive expansion material is reduced, and in the water loss process of the water-sensitive expansion material, the water-sensitive anti-counterfeiting ink is changed from transparent to opaque, and the 3D effect is lost.
Example 2
The water-sensitive anti-counterfeiting ink provided in this embodiment is similar to the water-sensitive anti-counterfeiting ink provided in embodiment 1, and is different in that: (1) The first connecting material is polyurethane epoxy resin, and the weight part of the first connecting material is 28 parts; (2) The second connecting material is tung oil, and the weight part of the second connecting material is 7.5 parts; (3) isopropanol as a solvent, wherein the mass fraction of the isopropanol is 50; (4) The water-sensitive expansion material is starch-acrylic acid graft polymer, the mass portion of which is 25 portions of which the grain diameter is 1 micron; (5) further comprising 1 part of an antifoaming agent and 1 part of a leveling agent.
The present embodiment also provides an anti-counterfeiting grating similar to the anti-counterfeiting grating provided in embodiment 1, except that: (1) The water-sensitive anti-counterfeiting layer 30 is formed by printing and drying the water-sensitive anti-counterfeiting ink provided by the embodiment, and the thickness of the water-sensitive anti-counterfeiting ink is 0.1mm; (2) the hollowed-out portion 41 is in a regular hexagon shape.
Example 3
The water-sensitive anti-counterfeiting ink provided in this embodiment is similar to the water-sensitive anti-counterfeiting ink provided in embodiment 2, except that: (1) The first connecting material is polyurethane epoxy resin, and the weight part of the first connecting material is 28 parts; (2) The second connecting material is tung oil, and the weight part of the second connecting material is 7.5 parts; (3) isopropanol as a solvent, wherein the mass fraction of the isopropanol is 50; (4) The water-sensitive expansion material is starch-acrylic acid graft polymer, and the mass fraction of the water-sensitive expansion material is 25 parts and the particle size of the water-sensitive expansion material is 1 micrometer.
The present embodiment also provides an anti-counterfeiting grating similar to the anti-counterfeiting grating provided in embodiment 2, except that: (1) The water-sensitive anti-counterfeiting layer 30 is formed by printing and drying the water-sensitive anti-counterfeiting ink provided by the embodiment, and the thickness of the water-sensitive anti-counterfeiting ink is 0.2mm; (2) the hollowed-out portion 41 is linear.
Example 4
The water-sensitive anti-counterfeiting ink provided in this embodiment is similar to the water-sensitive anti-counterfeiting ink provided in embodiment 2, except that: (1) The first connecting material is polyamide resin, and the mass portion of the first connecting material is 35 portions; (2) The second connecting material is rosin modified phenolic resin, and the weight part of the second connecting material is 10 parts; (3) butanol as solvent, which is 60 parts by mass; (4) The water-sensitive expansion material is a polyvinyl alcohol cross-linked product, and the mass portion of the water-sensitive expansion material is 35 portions of the water-sensitive expansion material with the grain diameter of 10 microns; (5) further comprising 2 parts of an antifoaming agent and 1.5 parts of a leveling agent.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The water-sensitive anti-counterfeiting ink is characterized by comprising the following raw materials in parts by mass:
wherein the particle size of the water-sensitive expansion material is 0.1-10 microns.
2. The water-sensitive anti-forgery ink of claim 1, wherein the water-sensitive expansion material has a water content of 3% to 10%.
3. The water-sensitive anti-forgery ink of claim 2, further comprising 1 to 3 parts of an antifoaming agent.
4. The water-sensitive anti-forgery ink of claim 3, further comprising 1 to 2 parts of leveling agent.
5. The water-sensitive anti-forgery ink of claim 4, wherein the water-sensitive swelling material is selected from the group consisting of: at least one of sodium polyacrylate, starch-acrylonitrile graft polymer, starch-acrylic acid graft polymer, cellulose-acrylonitrile graft polymer, carboxymethyl cellulose cross-linked product, polyvinyl alcohol cross-linked product, acrylonitrile-vinyl acetate copolymer saponification product, polyvinyl acid salt, methyl methacrylate-vinyl acetate copolymer saponification product, polyvinyl alcohol and dipropylene cross-linked product, and isobutylene-maleic anhydride alternating copolymer.
6. An anti-counterfeiting grating, comprising:
a base layer;
preprocessing a 3D image-text layer, and laminating the 3D image-text layer on the upper surface of the basal layer;
the water-sensitive anti-counterfeiting layer is arranged on one side of the image-text layer far away from the basal layer in a lamination way, and is formed by printing the water-sensitive anti-counterfeiting ink according to any one of claims 1-5; and
the covering layer is arranged on one side, far away from the image-text layer, of the water-sensitive anti-counterfeiting layer in a stacking mode, and a plurality of regularly distributed hollowed-out parts are arranged on the covering layer.
7. The anti-counterfeiting grating according to claim 6, wherein the material used for preparing the covering layer is selected from any one of UV varnish, PET film, BOPP film and aqueous paraffin.
8. The anti-counterfeiting grating according to claim 7, wherein the thickness of the cover layer is 0.001mm to 0.05mm.
9. The anti-counterfeiting grating according to claim 8, wherein the hollowed-out portion is circular, regular polygon or linear.
10. The preparation method of the anti-counterfeiting grating is characterized by comprising the following steps of:
providing a basal layer, wherein the basal layer is provided with a pretreatment 3D image-text;
a water-sensitive anti-counterfeiting layer is arranged above the basal layer in a lamination way, and is formed by printing and drying the water-sensitive anti-counterfeiting ink according to any one of claims 1-5;
a covering layer is arranged above the water-sensitive anti-counterfeiting layer in a lamination mode, and a plurality of regularly distributed hollowed-out parts are arranged on the covering layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310012055.3A CN116004055B (en) | 2023-01-05 | 2023-01-05 | Water-sensitive anti-counterfeiting ink, anti-counterfeiting grating and preparation method of anti-counterfeiting grating |
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| CN202310012055.3A CN116004055B (en) | 2023-01-05 | 2023-01-05 | Water-sensitive anti-counterfeiting ink, anti-counterfeiting grating and preparation method of anti-counterfeiting grating |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080173417A1 (en) * | 2005-04-06 | 2008-07-24 | Antonio Olmos Ruiz | Security or Special Paper With Internal Tactile Recognition Elements |
| CN101944306A (en) * | 2009-07-03 | 2011-01-12 | 深圳市华德防伪技术开发有限公司 | Humidity sensitive anti-counterfeiting label and method for printing and making same |
| CN107140308A (en) * | 2017-06-14 | 2017-09-08 | 刘春生 | A kind of anti-counterfeit container |
| CN114644857A (en) * | 2022-04-08 | 2022-06-21 | 深圳九星印刷包装集团有限公司 | Anti-counterfeiting color-changing ink and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080173417A1 (en) * | 2005-04-06 | 2008-07-24 | Antonio Olmos Ruiz | Security or Special Paper With Internal Tactile Recognition Elements |
| CN101944306A (en) * | 2009-07-03 | 2011-01-12 | 深圳市华德防伪技术开发有限公司 | Humidity sensitive anti-counterfeiting label and method for printing and making same |
| CN107140308A (en) * | 2017-06-14 | 2017-09-08 | 刘春生 | A kind of anti-counterfeit container |
| CN114644857A (en) * | 2022-04-08 | 2022-06-21 | 深圳九星印刷包装集团有限公司 | Anti-counterfeiting color-changing ink and preparation method thereof |
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| CN116004055B (en) | 2023-10-03 |
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