Anti-uncovering and anti-counterfeiting wine label and preparation method thereof

Abstract

The invention provides an anti-uncovering and anti-counterfeiting wine label and a preparation method thereof, and relates to the technical field of anti-counterfeiting. The anti-uncovering and anti-counterfeiting wine label comprises the base material layer and the adhesive layer arranged on the base material layer, the adhesive layer comprises the modified acrylic resin, the ethyl acetate, the first curing agent, the second curing agent and the hardening agent, the adhesive layer uses the modified temperature-resistant glue, the temperature resistance and the chemical solvent resistance of the wine label glue are improved, and the anti-uncovering and anti-counterfeiting wine label has the advantages that the anti-uncovering and anti-counterfeiting effects are achieved; the anti-uncovering and anti-counterfeiting wine label can still be firmly attached to a wine bottle when being heated and infiltrated by a solvent, the wine label cannot be completely peeled off, and counterfeiting by a counterfeiter through uncovering the label is avoided, so that the anti-uncovering and anti-counterfeiting purposes are achieved, and the brand image of a manufacturer and the rights and interests of consumers are maintained.

Description

Technical Field

[0001] The present application relates to the field of anti-counterfeiting technology, and in particular to an anti-tear and anti-counterfeiting wine label and a preparation method thereof. Background Art

[0002] Wine labels, as both identification and packaging materials for alcoholic beverages, play a crucial role in the market. Currently, common wine labels on the market are made of standard self-adhesive paper or film materials, printed with information such as the wine's brand, origin, and alcohol content, along with various other functional anti-counterfeiting features. With the advancement of the times, increasing consumer demand for personalization and customization, and the advent of the Internet Plus era, the future trend for wine labels is to not only achieve one-to-one code and personalized customization, but also incorporate features such as tear-proofing, anti-peeling, and anti-counterfeiting features.

[0003] The main counterfeiting method currently used on high-end wines is to remove the label. Counterfeiters then use specialized equipment to drill a 0.2mm pinhole-sized hole in the bottle. They then extract the genuine wine, replace it with cheaper liquor, and plug the hole with porcelain powder. The resulting label is then re-labeled and sold as genuine high-end wine. This practice, known as "punched wine," is a common method of counterfeiting high-end wines. This method not only leaves the original label intact, but also creates a tiny, concealed hole, making it difficult for consumers to detect. Common methods for counterfeiting wine labels by completely removing them include: 1. Heating the label with a heat gun or other means and then peeling it off while it's still hot; 2. Soaking the label in a chemical solution such as label remover and then peeling it off. These counterfeiting methods are characterized by low cost, low barriers to entry, widespread production, and difficulty in identifying counterfeit products. Commonly used wine labels on the market are made of coated paper or other film-based materials, making these methods difficult to circumvent and lacking tear-, peel-, or anti-counterfeiting properties. Summary of the Invention

[0004] The purpose of this application is to provide an anti-tear and anti-counterfeiting wine label and a preparation method thereof, aiming to solve the problem that existing wine labels do not have anti-tear, anti-tear and anti-counterfeiting functions.

[0005] To achieve the above objectives, the present application provides an anti-tamper and anti-counterfeiting wine label, comprising a substrate layer and an adhesive layer arranged on the first surface of the substrate layer, wherein the adhesive layer comprises, by mass: 95-105 parts of modified acrylic resin, 10-30 parts of ethyl acetate, 1.0-1.5 parts of a first curing agent, 1.0-1.5 parts of a second curing agent and 4-8 parts of a hardener.

[0006] In some embodiments, the hardener is a modified amine hardener containing a reactive group.

[0007] In some embodiments, the first curing agent is an isocyanate curing agent, and the second curing agent is an amine epoxy curing agent;

[0008] Optionally, the modifying group of the modified acrylic resin includes maleic anhydride.

[0009] In some embodiments, the substrate layer is synthetic brittle paper;

[0010] Optionally, the thickness of the substrate layer is 50 to 100 μm; the thickness of the adhesive layer is 20 to 25 μm.

[0011] In some embodiments, a temperature-variable ink layer is provided on the second surface of the substrate layer;

[0012] Optionally, the temperature-changing ink layer comprises, by weight: 15-25 parts of temperature-changing powder, 100 parts of varnish, 6-8 parts of epoxy curing agent, 10-20 parts of toluene, 10-20 parts of butanone, and 1-3 parts of developer;

[0013] Optionally, the thickness of the temperature-variable ink layer is 3-5 μm.

[0014] In some embodiments, a printed coating is further provided between the substrate layer and the temperature-variable ink layer;

[0015] Optionally, the printed coating has a thickness of 5-10 μm;

[0016] Optionally, the printed coating includes at least one of an acrylic resin coating, a polyurethane resin coating, a polyvinyl alcohol coating, a polyvinyl pyrrolidone coating, a polyethylene wax coating, a paraffin coating, a silicon dioxide coating, an ultraviolet curing coating, a water-based coating, and a solvent-based coating.

[0017] In some embodiments, a release paper layer is further provided on the surface of the adhesive layer;

[0018] Optionally, the release paper layer has a grammage of 60 g / m 2 ~120g / m 2 .

[0019] The present application also provides a method for preparing the aforementioned anti-tampering and anti-counterfeiting wine label, comprising:

[0020] Applying a printed coating layer on the second surface of the substrate layer to obtain a first film;

[0021] Applying adhesive coating liquid on the release paper and drying to obtain a second film;

[0022] Laminating the first film and the second film so that the first surface of the substrate layer is adhered to the adhesive layer to obtain a third film;

[0023] The temperature-variable ink coating liquid is coated on the printed coating surface of the third film to obtain the anti-tear and anti-counterfeiting wine label.

[0024] In some embodiments, the method for preparing the adhesive coating liquid includes:

[0025] Mixing 95-105 parts of modified acrylic resin and 1 / 2 amount of ethyl acetate to obtain a first mixed solution;

[0026] 1.0-1.5 parts of the first curing agent and 1 / 4 of the amount of ethyl acetate are diluted and added to the first mixed solution for a second mixing to obtain a second mixed solution;

[0027] 1.0-1.5 parts of the second curing agent and 1 / 4 of the amount of ethyl acetate are diluted and added to the second mixed solution for a third mixing to obtain a third mixed solution;

[0028] adding 4-8 parts of a hardener to the third mixed solution for a fourth mixing, and filtering to obtain the adhesive coating solution;

[0029] Optionally, the adhesive coating liquid has a solid content of 28%-33%;

[0030] Optionally, the filtration is performed using a 300-mesh filter.

[0031] In some embodiments, the method for preparing the temperature-variable ink coating liquid includes:

[0032] Mixing 15-25 parts of the temperature-changing powder and 100 parts of varnish to obtain a fifth mixed solution;

[0033] 6-8 parts of epoxy curing agent, 10-20 parts of toluene and 10-20 parts of butanone are diluted and added to the fifth mixed solution for a sixth mixing to obtain a sixth mixed solution;

[0034] adding 1-3 parts of a developer to the sixth mixed solution for a seventh mixing, and filtering to obtain the temperature-variable ink coating solution;

[0035] Optionally, the solid content of the temperature-variable ink coating liquid is 17%-19%;

[0036] Optionally, the filtration is performed using a 200-mesh filter.

[0037] Compared with the prior art, the advantages of this application include:

[0038] The anti-tear and anti-counterfeiting wine label provided by the present application includes a substrate layer and an adhesive layer arranged on the substrate layer. The adhesive layer includes modified acrylic resin, ethyl acetate, a first curing agent, a second curing agent and a hardener. The adhesive layer uses modified heat-resistant glue to improve the temperature resistance and chemical solvent resistance of the wine label glue, so that it can still be firmly adhered to the wine bottle when heated and solvent-infiltrated. The wine label cannot be completely peeled off, and counterfeiters are prevented from counterfeiting by peeling off the label, thereby achieving the purpose of anti-tear and anti-counterfeiting, and safeguarding the manufacturer's brand image and consumer rights. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope of the present application.

[0040] Figure 1 This is a structural diagram of an embodiment of the anti-tamper and anti-counterfeiting wine label of the present application;

[0041] Figure 2 A schematic diagram of the synthetic brittle paper of the present application being torn into layers;

[0042] Figure 3 This is a structural diagram of another embodiment of the anti-tamper and anti-counterfeiting wine label of the present application;

[0043] Figure 4 This is a structural diagram of another embodiment of the anti-tamper and anti-counterfeiting wine label of the present application;

[0044] Figure 5 This is a structural diagram of another embodiment of the anti-tamper and anti-counterfeiting wine label of this application

[0045] Figure 6 This is a schematic flow chart of the method for preparing the anti-tamper and anti-counterfeiting wine label of the present application.

[0046] Description of reference numerals:

[0047] Anti-tamper and anti-counterfeiting wine label - 100; base material layer - 10; adhesive layer - 20; temperature-changing ink layer - 30; printing coating - 40; release paper layer - 50. DETAILED DESCRIPTION

[0048] As used herein:

[0049] "Prepared from" is synonymous with "comprising." As used herein, the terms "comprising," "including," "having," "containing," or any other variations thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises the listed elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0050] The conjunction "consisting of" excludes any unspecified element, step, or component. If used in a claim, this phrase renders the claim closed, excluding materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of" appears in a clause of the body of a claim, rather than immediately following the subject matter, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0051] When an amount, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper preferred values and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value with any range lower limit or preferred value, regardless of whether the range is disclosed alone. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted as including the range "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5", etc. When a numerical range is described herein, unless otherwise stated, the range is intended to include its end values and all integers and fractions within the range.

[0052] In these examples, parts and percentages are by mass unless otherwise indicated.

[0053] "Parts by mass" refers to the basic unit of measurement used to express the mass ratio of multiple components. One part can represent any unit of mass, such as 1g or 2.689g. If we say that the mass of component A is a parts and the mass of component B is b parts, this means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, we could say that the mass of component A is aK and the mass of component B is bK (K is an arbitrary number representing a multiplication factor). It's important to note that, unlike parts by mass, the sum of the mass of all components is not limited to 100 parts.

[0054] "And / or" is used to indicate that one or both of the stated situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0056] This application provides an anti-tamper and anti-counterfeiting wine label 100, please refer to Figure 1 , including a substrate layer 10 and an adhesive layer 20 arranged on the first surface of the substrate layer 10, the adhesive layer 20 including, by mass, 95-105 parts of modified acrylic resin, 10-30 parts of ethyl acetate, 1.0-1.5 parts of a first curing agent, 1.0-1.5 parts of a second curing agent and 4-8 parts of a hardener.

[0057] Among them, the substrate layer 10 is used to print information such as the brand, origin, alcohol content of the wine, and various other functional anti-counterfeiting information. The material of the substrate layer 10 can be paper material or film material, for example, it can be traditional coated paper or other film wine labels, or it can be synthetic fragile paper, preferably synthetic fragile paper.

[0058] Among them, the raw materials of the adhesive layer 20 include a hardener, so that the adhesive layer 20 will undergo secondary curing when heated, so that the adhesive layer 20 will not soften, and the anti-tear and anti-counterfeiting wine label 100 can still fit well on the wine bottle. At the same time, it has good chemical corrosion resistance and will not fall off or drop off when subjected to chemical erosion such as label peeling water.

[0059] The adhesive layer of the anti-tear and anti-counterfeiting wine label provided by this application uses modified heat-resistant glue to improve the heat resistance and chemical solvent resistance of the wine label glue, so that it can still be firmly adhered to the wine bottle when heated and soaked in solvents. The wine label cannot be completely peeled off, and counterfeiters are prevented from counterfeiting by peeling off the label, thereby achieving the purpose of anti-tear and anti-counterfeiting, and safeguarding the manufacturer's brand image and consumer rights.

[0060] The mass fraction of the modified acrylic resin can be, for example, 95 parts, 96 parts, 97 parts, 98 parts, 99 parts, 100 parts, 101 parts, 102 parts, 103 parts, 104 parts, 105 parts or any value between 95 and 105 parts, and the mass fraction of ethyl acetate can be, for example, 10 parts, 12 parts, 15 parts, 18 parts, 20 parts, 22 parts, 23 parts, 25 parts, 28 parts, 30 parts or any value between 10 and 30 parts.

[0061] Among them, ethyl acetate is used as a solvent, and the solvent addition ratio is determined by the coating process requirements. By adjusting the solvent addition ratio, the viscosity of the glue can be adjusted.

[0062] Among them, the mass fractions of the first curing agent and the second curing agent can be, for example, 1.0 parts, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts or any value between 1.0-1.5 parts, and the mass fraction of the hardener can be, for example, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts or any value between 4-8 parts.

[0063] In some embodiments, the hardener is a modified amine hardener containing active groups. The characteristic of the hardener is that after the amine cures the epoxy, the residual active groups (such as hydroxyl groups) can react with the acrylic resin under heating / initiator conditions, thereby causing secondary curing. The modified amine hardener containing active groups can be selected from Huntsman's modified amines containing hydroxyl groups or capable of grafting acrylic resins (such as 42BD).

[0064] In some embodiments, the first curing agent is an isocyanate curing agent, and the second curing agent is an amine epoxy curing agent.

[0065] The addition of the two curing agents has a synergistic effect. The isocyanate curing agent will react with the hydroxyl group in the modified acrylic glue to enhance the cohesion of the glue, and the amine epoxy curing agent will react with the carboxyl group in the glue. The two work together to form a network structure of the polymer, greatly improving the heat resistance and chemical resistance of the glue. It is difficult to achieve good heat resistance and chemical resistance by adding only one curing agent.

[0066] Among them, isocyanate curing agent is a class of compounds containing isocyanate groups (-NCO), which are widely used to undergo cross-linking reactions with materials containing active groups such as hydroxyl and amino groups (such as polyurethane, epoxy resin, etc.) to form cured products with high performance.

[0067] Based on their molecular structure and performance characteristics, isocyanate curing agents can be divided into the following categories: (1) aromatic isocyanates, common varieties include: toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), polymethylene polyphenyl polyisocyanate (PAPI); (2) aliphatic isocyanates, common varieties include: hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), lysine diisocyanate (LDI); (3) modified isocyanates, common varieties include: water-based isocyanates, blocked isocyanates, and mixed isocyanates.

[0068] Amine-based epoxy curing agents are a class of compounds that react with epoxy resins to form a cross-linked network structure. They are widely used in the curing process of epoxy resins. The curing reaction between amine curing agents and epoxy resins is primarily achieved through a chemical reaction between the amine group and the epoxy group. By chemically reacting with the epoxy groups in the epoxy resin, they transform the resin from a liquid state into a solid state with a three-dimensional network structure, thereby imparting excellent mechanical properties, chemical resistance, and thermal stability to the material.

[0069] Amine epoxy curing agents can be divided into the following categories according to their chemical structure and performance characteristics: (1) fatty amine curing agents, common varieties include: ethylenediamine (EDA), diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA); (2) aromatic amine curing agents, common varieties include: m-phenylenediamine (m-PDA), p-phenylenediamine (p-PDA), diaminodiphenylmethane (DDM); (3) modified amine curing agents, common varieties include: polyamide curing agent, modified fatty amine curing agent, modified aromatic amine curing agent.

[0070] In some embodiments, the modifying group of the modified acrylic resin includes maleic anhydride.

[0071] Modified acrylic resin is a high-performance material that is obtained by chemically or physically modifying traditional acrylic resin to improve its properties (such as improving weather resistance, adhesion, hardness, flexibility, etc.). Chemical modification methods include: (1) introducing functional groups, which introduce specific functional groups (such as hydroxyl, carboxyl, amino, etc.) into the acrylic resin molecular chain through chemical reactions to improve its properties; (2) copolymerization modification, which copolymerizes acrylic resin with other monomers (such as styrene, butadiene, etc.) to form copolymers, thereby improving its properties; (3) cross-linking modification, which introduces a cross-linking agent to form a cross-linked network structure between the acrylic resin molecular chains, thereby improving its hardness and chemical resistance.

[0072] The modified acrylic resin of the present application improves the heat resistance of the resin by introducing the functional group maleic anhydride during the polymerization process. Optionally, the modified acrylic resin of the present application uses TAK 154AHS pressure-sensitive adhesive, which is a commercially available raw material purchased from Henkel, model TAK 154AHS pressure-sensitive adhesive.

[0073] In some embodiments, the substrate layer 10 is a synthetic brittle paper, which is formed by foaming PP material to form a film, so that the gaps between the PP particles are filled with air, and the density is 0.5-0.7 g / cm 3Through a special film-forming process, a longitudinal fragile layer is distributed longitudinally. When the binding force between the wine label and the object is greater than the binding force between the PP particles in the longitudinal fragile layer of the synthetic fragile paper, the synthetic fragile paper material will be torn apart in layers, as shown in the schematic diagram. Figure 2 shown.

[0074] The base material 10 of the anti-tear and anti-counterfeiting wine label 100 of the present application is changed from traditional coated paper to synthetic fragile paper. The material property is fragile and the wine label will be torn when peeling off, and the wine label cannot be completely peeled off, thereby further achieving the purpose of anti-tear and anti-counterfeiting.

[0075] In some embodiments, the thickness of the substrate layer 10 is 50 to 100 μm, for example, it can be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm or any value between 50 and 100 μm; the thickness of the adhesive layer is 20 to 25 μm, for example, it can be 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, 25 μm or any value between 20 and 25 μm.

[0076] In some embodiments, see Figure 3 A temperature-sensitive ink layer 30 is provided on the second surface of the substrate layer 10, wherein the second surface is the side opposite to the first surface. The temperature-sensitive ink layer 30 is colorless before changing color, and will undergo irreversible color change after being heated or infiltrated by chemical reagents, thereby further achieving the purpose of anti-tear and anti-counterfeiting.

[0077] In some embodiments, the temperature-changing ink layer 30 includes, by mass, 15-25 parts of temperature-changing powder, 100 parts of varnish, 6-8 parts of epoxy curing agent, 10-20 parts of toluene, 10-20 parts of butanone, and 1-3 parts of developer.

[0078] The weight percentage of the temperature-changing powder can be, for example, 15 parts, 18 parts, 20 parts, 22 parts, 25 parts, or any value between 15 and 25 parts. The temperature-changing powder is a nanoscale temperature-changing particle capsule made by encapsulating a temperature-changing dye in a microcapsule. The temperature-changing powder changes color with temperature and is very sensitive to ambient temperature, so the temperature range of color change can be controlled. When the temperature-changing ink layer 30 is exposed to high temperatures, the temperature-changing particle capsules therein are destroyed, resulting in an irreversible color change, such as from colorless to red, black, etc.

[0079] The color developer is a leuco dye, which changes from colorless to colored under specific conditions (such as solvent action and pH change). For example, leuco malachite green is colorless in acidic solvents and green in alkaline solvents (red can also be achieved by adjusting the formula). It also undergoes a color reaction when exposed to chemical solvents such as ethyl ester, alcohol, and stripping water. Rhodamine B fluorescent dye can also be used. It is colorless in low concentrations or non-polar solvents and exhibits red fluorescence in high concentrations or polar solvents (such as ethanol).

[0080] Among them, ink oil is an auxiliary material used to adjust the performance of ink. There are many types of ink oils. According to their composition and use, they can be divided into the following categories: (1) Vegetable oil-based ink oils, which are mainly made by refining and modifying vegetable oils (such as linseed oil, tung oil, soybean oil, etc.); (2) Mineral oil-based ink oils, which are mainly made by refining mineral oils (such as paraffin oil, cyclohexane oil, etc.); (3) Synthetic oil-based ink oils, which are modified from synthetic polymer compounds (such as polyester, polyether, etc.).

[0081] Among them, the varnish of the present application is PASIMED varnish, which is a commercially available raw material purchased from Zhaoqing Yangguang Ink Co., Ltd., and the model is PASIMED varnish.

[0082] The weight percentage of the epoxy curing agent can be, for example, 6 parts, 7 parts, 8 parts, or any value between 6 and 8 parts. Epoxy curing agents can be divided into the following categories based on their chemical structure and performance characteristics: (i) amine curing agents, (ii) acid anhydride curing agents, (iii) phenolic curing agents, and (iv) modified curing agents.

[0083] The epoxy curing agent of the present application may be, for example, an amine curing agent, such as any one of ethylenediamine (EDA), diethylenetriamine (DETA), triethylenetetramine (TETA), and tetraethylenepentamine (TEPA).

[0084] Among them, toluene and butanone are used as diluents, and their weight parts can be 10 parts, 12 parts, 15 parts, 17 parts, 18 parts, 19 parts, 20 parts or any value between 10-20 parts. Under the premise that the total amount of diluent meets the requirements, a combination of toluene and butanone can be used, and the amount of each is controlled within the above range.

[0085] Optionally, the thickness of the temperature-variable ink layer 30 is 3-5 μm, for example, 3 μm, 4 μm, 5 μm or any value between 3-5 μm.

[0086] Optionally, the temperature-variable ink layer 30 may cover the entire substrate layer 10 , or may be disposed only on the peripheral edges of the substrate layer 10 .

[0087] In some embodiments, see Figure 4 A printing coating layer 40 is further provided between the substrate layer 10 and the temperature-variable ink layer 30. The printing coating layer 40 is used to improve smoothness and adhesion, make the printing surface more uniform, and enhance the printing effect.

[0088] Optionally, the thickness of the printed coating 40 is 5-10 μm, for example, 5 μm, 7 μm, 8 μm, 10 μm or any value between 5-10 μm.

[0089] In some embodiments, the printed coating 40 includes at least one of an acrylic resin coating, a polyurethane resin coating, a polyvinyl alcohol coating, a polyvinyl pyrrolidone coating, a polyethylene wax coating, a paraffin coating, a silicon dioxide coating, an ultraviolet curing coating, a water-based coating, and a solvent-based coating.

[0090] Among them, acrylic resin can provide high gloss and excellent adhesion, making the printed pattern more vivid and clear. Polyurethane resin has good flexibility and wear resistance, which can enhance the durability of the printed layer. Polyvinyl alcohol or polyvinyl pyrrolidone is used to improve the smoothness and adhesion of the coating, making the printed surface more uniform. Polyethylene wax or paraffin is used to improve the slipperiness and anti-stickiness of the coating, making the printing process smoother while enhancing waterproofness. Silica or other nanoparticles are used in matte coatings to provide a delicate touch while reducing reflections and enhancing the visual effect of the printed pattern. UV-curable coatings are composed of acrylic monomers or oligomers, which are cured by UV light to form a high-gloss, high-definition surface suitable for fine printing. Water-based coatings are environmentally friendly and suitable for applications with high requirements on environmental impact. Solvent-based coatings provide higher gloss and durability.

[0091] The above components of the printing coating 40 can be used alone or in combination to meet the requirements of the wine label in terms of glossiness, color vividness, clarity and surface texture, thereby improving the overall printing effect.

[0092] In some embodiments, see Figure 5 The adhesive layer 20 is also provided with a release paper layer 50, which acts as a cutting liner and facilitates peeling of the adhesive layer. The surface grid structure of the release paper layer forms a staggered grid on the adhesive surface, allowing for rapid degassing during peeling and lamination, preventing the formation of lamination bubbles. The release paper layer 50 can be glassine release paper, which can reduce costs.

[0093] Optionally, the release paper layer 50 has a gram weight of 60 g / m 2 ~120g / m 2 , for example, it can be 60g / m 2 , 70g / m 2 , 80g / m 2 , 90g / m 2 , 100g / m 2 , 110g / m 2 , 120g / m 2 or 60g / m 2 Any value between ~120g / m2.

[0094] This application also provides a method for preparing the above-mentioned anti-tampering and anti-counterfeiting wine label. Figure 6,include:

[0095] S100: applying a printed coating on the second surface of the substrate layer to obtain a first film;

[0096] S200: applying an adhesive coating liquid on the release paper and drying the adhesive to obtain a second film;

[0097] S300: Laminating the first film and the second film so that the first surface of the substrate layer is laminated with the adhesive layer to obtain a third film;

[0098] S400: applying a temperature-variable ink coating liquid on the printed coating surface of the third film to obtain an anti-tear and anti-counterfeiting wine label.

[0099] In some embodiments, the method for preparing the adhesive coating liquid includes:

[0100] Mixing 95-105 parts of modified acrylic resin and 1 / 2 amount of ethyl acetate to obtain a first mixed solution;

[0101] 1.0-1.5 parts of the first curing agent and 1 / 4 of the amount of ethyl acetate are diluted and added to the first mixed solution for a second mixing to obtain a second mixed solution;

[0102] 1.0-1.5 parts of the second curing agent and 1 / 4 of the amount of ethyl acetate are diluted and added to the second mixed solution for a third mixing to obtain a third mixed solution;

[0103] adding 4-8 parts of a hardener to the third mixed solution for a fourth mixing, and filtering to obtain the adhesive coating solution;

[0104] Optionally, the adhesive coating liquid has a solid content of 28%-33%;

[0105] Optionally, the filtration is performed using a 300-mesh filter.

[0106] In some embodiments, the method for preparing the temperature-variable ink coating liquid includes:

[0107] Mixing 15-25 parts of the temperature-changing powder and 100 parts of varnish to obtain a fifth mixed solution;

[0108] 6-8 parts of epoxy curing agent, 10-20 parts of toluene and 10-20 parts of butanone are diluted and added to the fifth mixed solution for a sixth mixing to obtain a sixth mixed solution;

[0109] adding 1-3 parts of a developer to the sixth mixed solution for a seventh mixing, and filtering to obtain the temperature-variable ink coating solution;

[0110] Optionally, the solid content of the temperature-variable ink coating liquid is 17%-19%;

[0111] Optionally, the filtration is performed using a 200-mesh filter.

[0112] The embodiments of the present application will be described in detail below in conjunction with specific examples, but it will be understood by those skilled in the art that the following examples are merely illustrative of the present application and should not be considered as limiting the scope of the present application. In the examples, if specific conditions are not specified, the conditions are carried out according to conventional conditions or manufacturer recommendations. The reagents or instruments used are not specified by the manufacturer and are conventional products that can be purchased commercially.

[0113] Example 1

[0114] This embodiment provides an anti-tamper and anti-counterfeiting wine label. Figure 5 , including a release paper layer 50, an adhesive layer 20, a substrate layer 10, a printing coating layer 40 and a temperature-variable ink layer 30 arranged in sequence from bottom to top; wherein the release paper layer 50 is 80g / m 2 Glassine release paper; the thickness of the adhesive layer 20 is 25 μm, and it includes, by mass, 100 parts of modified acrylic resin, 20 parts of ethyl acetate, 1.0 part of isocyanate curing agent, 1.0 part of amine epoxy curing agent and 4 parts of modified amine hardener containing active groups, wherein the modified acrylic resin is Henkel's TAK 154AHS pressure-sensitive adhesive, the isocyanate curing agent is Bayer's L-75 curing agent, the amine epoxy curing agent is Jialin's PX046 curing agent, and the modified amine hardener containing active groups is Huntsman's 42BD; the substrate layer 10 is synthetic brittle paper with a thickness of 100 μm; the printed coating 40 is a polyvinyl alcohol coating with a thickness of 8 μm; the temperature-changing ink layer 30 has a thickness of 4 μm and comprises, by mass, 15 parts of temperature-changing powder, 100 parts of varnish, 6 parts of epoxy curing agent, 15 parts of toluene, 15 parts of butanone and 2 parts of developer, wherein the temperature-changing powder is the BichromT series temperature-changing powder of Beijing Boda Green Technology Co., Ltd.; the varnish is the PASIMED varnish of Yangguang Ink; the epoxy curing agent is the SI400 curing agent of Yangguang Ink; the developer is the leuco malachite green dye of Fluka.

[0115] This embodiment also provides a method for preparing an anti-tampering and anti-counterfeiting wine label, comprising the following steps:

[0116] In the first step, a printed coating is applied on one side of the synthetic brittle paper to obtain a film 1; an anilox roller is used for micro-concave coating, and drying is performed at 60-80°C for 1-2 minutes. The start-up speed is adjusted according to the drying tunnel length.

[0117] In the second step, an adhesive coating liquid is prepared and applied to the release surface of the glassine release paper to a coating thickness of 25 μm. The film 2 having an adhesive layer is obtained after drying in an oven at 120°C for 1-2 minutes (determined by the drying tunnel length and the start-up speed). The adhesive coating liquid is prepared as follows:

[0118] 100 parts of modified acrylic resin and 10 parts of ethyl acetate were stirred at 600-800 r / min for 10 minutes to obtain a first mixed solution;

[0119] 1.0 part of isocyanate curing agent and 5 parts of ethyl acetate were diluted and added to the first mixed solution and stirred at 600-800 rpm for 5 minutes to obtain a second mixed solution;

[0120] 1.0 part of an amine epoxy curing agent and 5 parts of ethyl acetate were diluted and added to the second mixed solution and stirred at 600-800 rpm for 5 minutes to obtain a third mixed solution;

[0121] 4 parts of modified amine hardener containing active groups were added to the third mixed solution and stirred at 600-800 r / min for 10-20 minutes. After stirring, the mixture was filtered through a 300-mesh filter to obtain an adhesive coating liquid with a solid content of 30%.

[0122] In the third step, the non-printed coating side of film 1 is laminated to the adhesive layer side of film 2 to obtain film 3.

[0123] In the fourth step, a temperature-sensitive ink coating liquid is applied to the printed coating side of the film 3 using an M-200 anilox roller for micro-concave coating to a coating thickness of 4 μm, and then dried in an oven at 60° C. for 1-2 minutes to obtain the anti-tamper and anti-counterfeiting wine label of Example 1. The preparation method of the temperature-sensitive ink coating liquid comprises:

[0124] 15 parts of temperature-changing powder and 100 parts of varnish were stirred at 600-800 rpm for 10 minutes to obtain a fifth mixed solution;

[0125] 6 parts of epoxy curing agent, 15 parts of toluene and 15 parts of butanone were diluted and added to the fifth mixed solution and stirred at 600-800 rpm for 5 minutes to obtain a sixth mixed solution;

[0126] Two parts of the developer were added to the sixth mixed solution and stirred at 600-800 r / min for 5 minutes. After stirring, the solution was filtered through a 200-mesh filter to obtain a temperature-variable ink coating liquid with a solid content of 18%.

[0127] The anti-tamper and anti-counterfeiting wine labels of Examples 2-3 and Comparative Examples 1-2 are obtained by referring to the preparation method of Example 1. The only difference from Example 1 is that the formulas of the adhesive layer 20 and the temperature-changing ink layer 30 are different. The formulas of the adhesive layer 20 of each embodiment and comparative example are shown in Table 1, and the formulas of the temperature-changing ink layer 30 of each embodiment and comparative example are shown in Table 2.

[0128] Table 1 Formulations of adhesive layers of various embodiments and comparative examples (parts)

[0129]

[0130] Table 2 Formulations of the temperature-variable ink layers of the embodiments and comparative examples (parts)

[0131]

[0132] The performance tests of the anti-tamper and anti-counterfeiting wine labels of Examples 1-3 and Comparative Examples 1-2 were respectively carried out, including the performance test of the adhesive layer and the performance test of the temperature-variable ink layer. The test results are shown in Tables 3 and 4.

[0133] Table 3 Performance test results of adhesive layer

[0134]

[0135] The hot air gun heating test method is as follows: after the wine label is attached to the wine bottle for 24 hours, use an industrial-grade hot air gun to heat and peel off the label. The hot air gun temperature is greater than 70°C. The label peeling technique is to use a blade to gently scrape and peel slowly from the edge of the wine label. If the wine label can be completely peeled off, it is judged as NG. If the wine label cannot be completely peeled off, it is judged as OK.

[0136] The label peeling water soaking test method is: after the wine label is attached to the wine bottle for 24 hours, soak the wine label with label peeling water, and peel the label with a blade starting from the edge of the wine label and slowly scraping it. If the wine label can be completely peeled off, it is judged as NG, if the wine label cannot be completely peeled off, it is judged as OK.

[0137] As shown in Table 3, both too low and too high curing agent and hardener dosages can affect the performance of the adhesive layer, preventing the wine label from being completely peeled off even after being heated or soaked in label-peeling water. When the curing agent and hardener dosage is too low, the glue is not sufficiently cross-linked, resulting in poor temperature and chemical resistance that do not meet the requirements. When the curing agent and hardener dosage is too high, the glue cross-linking reaction is too high, resulting in low viscosity. The bonding force between the label and the adhered object falls below the lower limit of brittle paper breakage, causing the label to be completely peeled off.

[0138] Table 4 Performance test results of temperature-variable ink layer

[0139]

[0140] The hot air gun heating test method is as follows: after the wine label is attached to the wine bottle for 24 hours, it is heated with an industrial-grade hot air gun. The temperature of the hot air gun is greater than 70°C. If the wine label can show color, it is judged as OK. If the wine label cannot show color, it is judged as NG.

[0141] The test method for label peeling water soaking is as follows: stick the wine label on the wine bottle for 24 hours, then soak the wine label with label peeling water. After the wine label is dry, if the wine label can show color, it is judged as OK, if the wine label cannot show color, it is judged as NG.

[0142] The adhesion test is a 100-grid test. Use a 100-grid knife to cut the ink coating on the surface of the wine label into 100 grids, and then use 3M600 test tape to stick it and then peel it off. If the ink falls off, it is judged as NG, if there is no ink falling off, it is judged as OK.

[0143] As shown in Table 4, the temperature-variable ink layers of the present application are all colorless and free of ink marks, and can all be colored after being heated with a hot air gun and soaked in water for label removal, and have good adhesion and no ink loss. However, the comparative example 1 solution has an insignificant color development after being heated with a hot air gun and soaked in water for label removal, and has poor adhesion and will lose ink. The comparative example 2 solution has an insignificant color development after being heated with a hot air gun and soaked in water for label removal, and has good adhesion and will lose ink, due to the excessive amount of temperature-variable powder and epoxy curing agent used. Although it has a light appearance and ink marks after being heated with a hot air gun and soaked in water for label removal, it has good adhesion and no ink loss.

[0144] Thermochromic powders are primarily responsible for the color development of labels when heated. When too little is added, the resulting color is not deep enough and can be difficult to detect. Furthermore, because thermochromic powders are not completely transparent and colorless, excessive amounts can cause the thermochromic ink layer to take on a tint, affecting the overall aesthetic of the label. When too little epoxy curing agent is added, the synthetic resin in the varnish is insufficiently cross-linked, resulting in poor coating adhesion and the risk of de-inking. However, when added to a certain level, sufficient cross-linking is achieved, resulting in excellent adhesion that meets requirements. Further additions are ineffective and result in a considerable cost penalty.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0146] Furthermore, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and to form distinct embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is intended solely to enhance understanding of the overall background of this application and should not be construed as an admission or any implication that such information constitutes prior art known to those skilled in the art.

Claims

1. A wine label that is tamper-proof and anti-counterfeit, characterized in that: The adhesive layer comprises a substrate layer and an adhesive layer arranged on the first surface of the substrate layer. The adhesive layer comprises, by mass, 95-105 parts of a modified acrylic resin, 10-30 parts of ethyl acetate, 1.0-1.5 parts of a first curing agent, 1.0-1.5 parts of a second curing agent and 4-8 parts of a hardener.

2. The anti-tamper and anti-counterfeiting wine label according to claim 1, characterized in that: The hardener is a modified amine hardener containing an active group.

3. The anti-tamper and anti-counterfeiting wine label according to claim 1, characterized in that: The first curing agent is an isocyanate curing agent, and the second curing agent is an amine epoxy curing agent; Optionally, the modifying group of the modified acrylic resin includes maleic anhydride.

4. The anti-tamper and anti-counterfeiting wine label according to claim 1, characterized in that: The substrate layer is synthetic brittle paper; Optionally, the thickness of the substrate layer is 50 to 100 μm; the thickness of the adhesive layer is 20 to 25 μm.

5. The anti-tamper and anti-counterfeiting wine label according to any one of claims 1 to 4, characterized in that: The second surface of the substrate layer is provided with a temperature-variable ink layer; Optionally, the temperature-changing ink layer comprises, by weight: 15-25 parts of temperature-changing powder, 100 parts of varnish, 6-8 parts of epoxy curing agent, 10-20 parts of toluene, 10-20 parts of butanone, and 1-3 parts of developer; Optionally, the thickness of the temperature-variable ink layer is 3-5 μm.

6. The anti-tamper and anti-counterfeiting wine label according to claim 5, characterized in that: A printing coating is further provided between the substrate layer and the temperature-variable ink layer; Optionally, the printed coating has a thickness of 5-10 μm; Optionally, the printed coating includes at least one of an acrylic resin coating, a polyurethane resin coating, a polyvinyl alcohol coating, a polyvinyl pyrrolidone coating, a polyethylene wax coating, a paraffin coating, a silicon dioxide coating, an ultraviolet curing coating, a water-based coating, and a solvent-based coating.

7. The anti-tamper and anti-counterfeiting wine label according to claim 6, characterized in that: A release paper layer is also provided on the surface of the adhesive layer; Optionally, the release paper layer has a grammage of 60 g / m 2 ~120g / m 2 .

8. A method for preparing an anti-tamper and anti-counterfeiting wine label according to claim 7, characterized in that: include: Applying a printed coating layer on the second surface of the substrate layer to obtain a first film; Applying an adhesive coating liquid on the release paper and drying it to obtain a second film; Laminating the first film and the second film so that the first surface of the substrate layer is laminated with the adhesive layer to obtain a third film; The temperature-variable ink coating liquid is coated on the printed coating surface of the third film to obtain the anti-tear and anti-counterfeiting wine label.

9. The method for preparing the anti-tampering and anti-counterfeiting wine label according to claim 8, characterized in that: The preparation method of the adhesive coating liquid comprises: Mixing 95-105 parts of modified acrylic resin and 1 / 2 amount of ethyl acetate to obtain a first mixed solution; Diluting 1.0-1.5 parts of the first curing agent and 1 / 4 of the amount of ethyl acetate, and adding the diluted solution to the first mixed solution for a second mixing to obtain a second mixed solution; 1.0-1.5 parts of the second curing agent and 1 / 4 of the amount of ethyl acetate are diluted and added to the second mixed solution for a third mixing to obtain a third mixed solution; adding 4-8 parts of a hardener to the third mixed solution for a fourth mixing, and filtering to obtain the adhesive coating solution; Optionally, the adhesive coating liquid has a solid content of 28%-33%; Optionally, the filtration is performed using a 300-mesh filter.

10. The method for preparing the anti-tampering and anti-counterfeiting wine label according to claim 8, characterized in that: The preparation method of the temperature-variable ink coating liquid comprises: Mixing 15-25 parts of the temperature-changing powder and 100 parts of varnish to obtain a fifth mixed solution; 6-8 parts of epoxy curing agent, 10-20 parts of toluene and 10-20 parts of butanone are diluted and added to the fifth mixed solution for a sixth mixing to obtain a sixth mixed solution; adding 1-3 parts of a developer to the sixth mixed solution for a seventh mixing, and filtering to obtain the temperature-variable ink coating solution; Optionally, the solid content of the temperature-variable ink coating liquid is 17%-19%; Optionally, the filtration is performed using a 200-mesh filter.

Images