CN118956206A - A UV-curable anti-counterfeiting inkjet ink with high adhesion and its preparation method and application - Google Patents
A UV-curable anti-counterfeiting inkjet ink with high adhesion and its preparation method and application Download PDFInfo
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- CN118956206A CN118956206A CN202411060620.4A CN202411060620A CN118956206A CN 118956206 A CN118956206 A CN 118956206A CN 202411060620 A CN202411060620 A CN 202411060620A CN 118956206 A CN118956206 A CN 118956206A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
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Abstract
本发明提供了一种具有高附着力的紫外光固化防伪喷墨墨水及其制备方法与应用，涉及防伪喷墨墨水技术领域。本发明所述墨水包括防伪色浆，树脂和/或寡聚物，光引发剂，反应型单体溶剂，表面活性剂及稳定剂等原料。其中所述防伪色浆由红外线吸收颜料、分散剂和溶剂混合，研磨后得到。本发明通过树脂和/或寡聚物、光引发剂和反应型单体溶剂的使用，提高了墨水与基材之间的附着力，并提高了墨水的耐水、耐酒精性能，进而使防伪标识不会轻易被毁损、变造和重制，起到了较好的产品追溯和防伪的作用。The present invention provides an ultraviolet light-curable anti-counterfeiting inkjet ink with high adhesion, and a preparation method and application thereof, and relates to the technical field of anti-counterfeiting inkjet ink. The ink of the present invention comprises anti-counterfeiting color paste, resin and/or oligomer, photoinitiator, reactive monomer solvent, surfactant and stabilizer and other raw materials. The anti-counterfeiting color paste is obtained by mixing infrared absorbing pigment, dispersant and solvent and grinding. The present invention improves the adhesion between the ink and the substrate and improves the water resistance and alcohol resistance of the ink through the use of resin and/or oligomer, photoinitiator and reactive monomer solvent, so that the anti-counterfeiting mark will not be easily damaged, altered and reproduced, and plays a better role in product traceability and anti-counterfeiting.
Description
Technical Field
The invention relates to the technical field of anti-counterfeiting ink-jet ink, in particular to ultraviolet light curing anti-counterfeiting ink-jet ink with high adhesive force, and a preparation method and application thereof.
Background
The anti-counterfeiting mark is printed on the product packaging material in a spray printing mode by utilizing a digital spray printing mode, so that the product traceability management can be enhanced. The anti-counterfeiting mark in the prior art is generally a visual mark, and consumers can see what the anti-counterfeiting mark on the product is and what part the anti-counterfeiting mark is arranged on the product after the product is sold on the market, so that the anti-counterfeiting mark is easy to imitate. In addition, when facing the imitation products provided with the same anti-counterfeiting marks, the producers and sellers have difficulty in identifying whether the products are produced and sold by themselves through effective technical means, so that the producers and sellers are in a passive situation in the face of consumer right maintenance and product quality market spot check, and inconvenience is caused to the product management of the producers and sellers. Finally, the existing visual anti-counterfeiting mark has the problem of poor adhesion with the base material. This problem leads to the visual anti-fake label to have great risk that drops, and then increases misjudgement and security risk, not only leads to manufacturing cost increase and wasting of resources, can cause negative impact to the brand reputation even to influence the market competition of brand.
Therefore, how to overcome the problems of the existing visual anti-counterfeiting mark, and provide an anti-counterfeiting mark with good adhesive force and certain concealment, so that the product can be effectively traced back and subjected to anti-counterfeiting management, and is more suitable for application, and one of the technical problems to be solved in the field is provided.
Disclosure of Invention
In order to solve the problems, the invention provides the ultraviolet light curing anti-counterfeiting ink with high adhesive force, and the preparation method and the application thereof, and through the use of resin and/or oligomer, photoinitiator and reactive monomer solvent, the adhesive force between the ink and a base material is improved, the water resistance and alcohol resistance of the ink are improved, so that an anti-counterfeiting mark cannot be easily damaged, altered and remade, and good product tracing and anti-counterfeiting effects are achieved.
The ultraviolet light curing anti-counterfeiting ink-jet ink with high adhesive force comprises the following raw materials in percentage by mass: 5-30% of anti-counterfeiting color paste, 0-20% of resin and/or oligomer, 10-25% of photoinitiator, 30-70% of reactive monomer solvent, and 0.5-3% of surfactant and stabilizer.
Further, the preparation method of the anti-counterfeiting color paste comprises the following steps:
mixing and grinding the infrared absorption pigment, the dispersing agent and the solvent to ensure that the particle size of the infrared absorption pigment is less than or equal to 50nm, and finely filtering by using a filter element with the fineness of less than or equal to 0.22 mu m to obtain the anti-counterfeiting color paste.
Further, the infrared absorption pigment is one or two of cesium tungsten oxide and lanthanum hexaboride.
Further, the dispersing agent is one or more of Lubo Solsperse J180, BYK-9151, BYK-168TF and EFKA-4310.
Further, the mass ratio of the infrared absorbing pigment to the dispersant is 1 (0.5 to 0.9).
Further, the particle size of the infrared absorption pigment is less than or equal to 50nm.
Further, the solvent is one or more of isobornyl acrylate, tetrahydrofurfuryl acrylic acid and 1, 6-hexanediol diacrylate. Preferably, the solvent is 1, 6-hexanediol diacrylate.
Further, the anti-counterfeiting color paste also comprises white pigment and black pigment.
Further, when the anti-counterfeiting color paste contains white pigment, the dispersing agent is one or more of Lubo Solsperse J180, BYK-168TF and EFKA-4310; when the anti-counterfeiting color paste contains black pigment, the dispersing agent is one or more of Lubo Solsperse J180, BYK-9151 and BYK-168 TF.
Further, the mass ratio of the infrared absorbing pigment to the white pigment or the black pigment is (0.1-2): 1. Preferably, the mass ratio of the infrared absorbing pigment to the white pigment or the black pigment is 1:1.
Further, the quality solid content of the anti-counterfeiting color paste is 10-30%, and the viscosity at 25 ℃ is 15-50 cPs.
The preparation method of the ultraviolet light curing anti-counterfeiting ink-jet ink comprises the following steps:
and mixing the anti-counterfeiting color paste, resin and/or oligomer, a photoinitiator and a reactive monomer solvent to obtain the ultraviolet light curing anti-counterfeiting ink-jet ink.
Further, the photoinitiator was 10% diphenyl (2, 4, 6-trimethylbenzoyl) phosphine oxide TPO and 5% 2, 4-diethylthioxanthone.
Further, the reactive monomer solvent was 39% dipropylene glycol diacrylate (DPGDA) and 15% N-vinylcaprolactam (NVCL).
Further, the surfactant and stabilizer was BYK-3760 at 0.5% and G16 at 0.5% of Rahn company.
Further, the content of the infrared absorption pigment in the ultraviolet light curing anti-counterfeiting ink-jet ink is more than or equal to 1wt%; the viscosity of the ultraviolet light solidified anti-counterfeiting ink-jet ink is 5 to 30cPs at 25 ℃, and the viscosity of the ultraviolet light solidified anti-counterfeiting ink-jet ink is 3 to 12mPs at the jet printing operation temperature of 40 to 50 ℃.
The invention further aims to provide application of the ultraviolet light curing anti-counterfeiting ink-jet ink in preparation of anti-counterfeiting marks.
Furthermore, the anti-counterfeiting mark can detect anti-counterfeiting information under the infrared ray with the wavelength of 800-1200 nm.
Further, the anti-counterfeiting mark is formed by spraying and printing on the anti-counterfeiting mark area of the product.
Furthermore, the jet printing is realized through a piezoelectric nozzle.
Compared with the prior art, the invention has the beneficial technical effects that:
The invention improves the stability of the anti-counterfeiting color paste by adjusting the composition of pigment, dispersing agent and solvent in the formula, and enables the anti-counterfeiting mark formed by the ink jet printing to detect the anti-counterfeiting information only under the infrared rays with the wavelength of 800-1200 nm by adjusting the anti-counterfeiting color paste, resin and/or oligomer, photoinitiator and reactive monomer solvent, thereby effectively avoiding the imitation of the product and effectively carrying out the retroactive management and anti-counterfeiting management of the product. The appearance of the ink is nearly transparent, and the ink has a certain concealment.
The invention can realize the code spraying operation of small-batch and multi-variety products customized by private, has flexible and various spraying printing contents, can randomly print various characters, two-dimensional codes, patterns and the like, and does not need plate making, thereby avoiding the defect that the code spraying is firstly required to prepare a printing plate in the traditional printing technology, also avoiding frequent switching of the printing plate and cleaning of a printing machine, greatly improving the production efficiency, reducing the energy consumption, avoiding the consumption of ink materials and saving the economic cost.
The invention adds the anti-counterfeiting color paste into the ink system of the resin and/or the oligomer, the photoinitiator and the reactive monomer solvent, so that the ink has no VOC pollution (accords with the national VOC <10 percent regulation), and the ink system of the resin and/or the oligomer, the photoinitiator and the reactive monomer solvent has high adhesiveness to various printing base materials, such as common packaging materials, paper, films, plastics and the like, and the sprayed anti-counterfeiting mark has high water resistance and alcohol resistance, cannot be easily damaged, altered and remade, and has better product tracing and anti-counterfeiting effects.
Detailed Description
The ultraviolet light curing anti-counterfeiting ink-jet ink comprises the following raw materials in percentage by mass: 5-30% of anti-counterfeiting color paste, 0-20% of resin and/or oligomer, 10-25% of photoinitiator, 30-70% of reactive monomer solvent, and 0.5-3% of surfactant and stabilizer.
In one embodiment, the preparation method of the anti-counterfeiting color paste comprises the following steps:
mixing and grinding the infrared absorption pigment, the dispersing agent and the solvent to ensure that the particle size of the infrared absorption pigment is less than or equal to 50nm, and finely filtering by using a filter element with the fineness of less than or equal to 0.22 mu m to obtain the anti-counterfeiting color paste.
In one embodiment, the infrared absorbing pigment is one or both of cesium tungsten oxide and lanthanum hexaboride.
The infrared absorption pigment is a key material for realizing the anti-counterfeiting effect of the invention. Infrared absorbing pigments are a class of specially designed pigments whose primary function is to absorb infrared radiation of a specific wavelength in the infrared spectrum. When the anti-counterfeiting color paste is used for anti-counterfeiting mark spray printing, the anti-counterfeiting mark is not perceived by naked eyes, has certain concealment, is difficult to imitate and counterfeite, and can be effectively traced back and anti-counterfeiting managed by producers and sellers.
The solvent of the invention is a grinding monomer solvent, which is mainly used as a carrier of pigment in anti-counterfeiting color paste. The acrylic functional groups contained in the solvent of the present invention facilitate the curing of the post-inkjet ink. And when the solvent is 1, 6-hexanediol diacrylate, the solvent contains two acrylic functional groups, and the curing effect is higher than that of a monofunctional solvent.
In one embodiment, the dispersant is one or more of Lubo Solsperse J180, BYK-9151, BYK-168TF, and EFKA-4310.
The dispersing agent of the invention can ensure that pigment is ground to a limited granularity in the grinding and dispersing process, and can ensure that the pigment keeps the stability of the granularity distribution for a long time, and avoid the pigment from sedimentation to block the spray head.
In one embodiment, the mass ratio of the infrared absorbing pigment to the dispersant is 1 (0.5 to 0.9).
In order to ensure the grinding quality and the grinding efficiency of the pigment during grinding and ensure that the pigment can stably maintain the particle size distribution of the pigment in anti-counterfeiting color paste for a long time and avoid the problems of sedimentation of the pigment and the like, the invention strictly limits the mass ratio of the infrared absorption pigment to the dispersing agent to be 1 (0.5-0.9). In addition, the present invention is not strictly limited to the milling method, and may be carried out by a milling means conventional in the art as long as the particle size distribution of the pigment can be achieved.
In one embodiment, the infrared absorbing pigment has a particle size of 50nm or less.
In one embodiment, the solvent is one or more of isobornyl acrylate, tetrahydrofurfuryl acrylic acid and 1, 6-hexanediol diacrylate. Preferably, the solvent is 1, 6-hexanediol diacrylate.
In one embodiment, the anti-counterfeiting color paste further comprises white pigment and black pigment.
The transparent color paste can realize the functions of the anti-counterfeiting mark only from the perspective of realizing the spray printing of the anti-counterfeiting mark. However, from the practical production perspective, if the transparent color paste, the white pigment, the black pigment and the like can be matched for use, the anti-counterfeiting mark can be printed, the anti-counterfeiting mark can be detected by means of a detection instrument, and the anti-counterfeiting mark can be suitable for more application scenes.
In one embodiment, when the anti-counterfeiting color paste contains white pigment, the dispersing agent is one or more of Lubo Solsperse J180, BYK-168TF and EFKA-4310; when the anti-counterfeiting color paste contains black pigment, the dispersing agent is one or more of Lubo Solsperse J180, BYK-9151 and BYK-168 TF.
In one embodiment, the mass ratio of the infrared absorbing pigment to the white pigment or the black pigment is (0.1 to 2): 1.
In one embodiment, the mass ratio of the infrared absorbing pigment to the white pigment or black pigment is 1:1.
The ink-jet ink has a high requirement for the storage stability of the pigment, because if the storage stability of the pigment is not satisfactory, there is a risk that the pigment will settle and cause clogging of the printer head. Therefore, conventional pigments are extremely difficult to apply to inkjet inks, but dyes are more commonly used as colorants for inkjet inks. However, it is well known to those skilled in the art that dyes have disadvantages such as poor light stability, poor water resistance, poor light resistance, poor chemical resistance, unstable print quality, etc. as colorants for inkjet inks, while pigments do not have the above problems. Therefore, the invention overcomes the problems existing in the preparation of the inkjet by taking the pigment as the pigment through a proper grinding process by combining and using proper pigment, dispersing agent and solvent, so that the pigment can stably maintain a uniformly dispersed state in the ink for a long time, and the quality problems such as pigment sedimentation and the like are avoided.
In addition, when the anti-counterfeiting color paste with visible light color is manufactured, the concentration of the infrared absorption pigment is not too low, otherwise, the anti-counterfeiting effect is possibly not obvious; the concentration of the infrared absorbing pigment is not too high due to the high price. Considering the anti-fake effect and material cost comprehensively, the mass ratio of the infrared absorption pigment to the black pigment is (0.1-2) 1; it is further preferable that the mass ratio of the infrared absorbing pigment to the black pigment is 1:1.
When the anti-counterfeiting color paste contains white pigment, the obtained anti-counterfeiting color paste is white, and the specific preparation method is as follows: mixing the white pigment, the dispersing agent and the solvent according to the formula amount, and carrying out second grinding to ensure that the particle size of the white pigment is less than or equal to 300nm; fine filtering with filter element with fineness less than or equal to 1 μm to obtain white slurry; and then mixing the white slurry with the infrared absorption slurry, and taking the mixture as anti-counterfeiting color paste.
When the anti-counterfeiting color paste contains black pigment, the black anti-counterfeiting color paste is obtained, and the specific preparation method is as follows: the black anti-counterfeiting color paste is prepared according to the following steps: mixing the black pigment, the dispersing agent and the solvent according to the formula amount, and carrying out third grinding to ensure that the particle size of the black pigment is less than or equal to 100nm; fine filtering with filter element with fineness less than or equal to 0.5 μm to obtain black pigment slurry; then the black pigment slurry and the infrared absorption slurry are mixed and the mixture is used as anti-counterfeiting color paste.
In one embodiment, the anti-counterfeiting color paste has a mass solid content of 10-30% and a viscosity of 15-50 cPs at 25 ℃.
The anti-counterfeiting color paste is mainly used in ink-jet ink, so that the viscosity of the anti-counterfeiting color paste meets the requirements of ink-jet equipment and has good pigment storage stability. Therefore, the viscosity of the anti-counterfeiting color paste is less than or equal to 50mPas and is regarded as being qualified. The viscosity change is observed after the glass is placed for seven days, the lower the viscosity is, the smaller the change rate is, the better the viscosity is, meanwhile, whether the glass is layered or not is observed, and if the glass is layered, the glass is regarded as unqualified. When the filterability is evaluated, the size of the spray head can be simulated, 1 mu m filter paper is selected for filtration, whether the spray head is blocked or not is observed, and if the spray head is not blocked, the spray head is qualified. The viscosity of the technical proposal of the invention is preferably 15 to 50cps at 25 ℃.
When the solid content of the anti-counterfeiting color paste is low, the content of the anti-counterfeiting pigment is difficult to ensure the concentration of the infrared absorption pigment, so that the anti-counterfeiting effect is reduced; when the solid content of the anti-counterfeiting color paste is high, the dispersion and sedimentation preventing performance of the infrared absorption pigment is reduced. In order to ensure the anti-counterfeiting effect of the infrared absorption pigment in the anti-counterfeiting color paste and simultaneously ensure that the anti-counterfeiting color paste has excellent storage stability, the mass solids of the anti-counterfeiting color paste are preferably 10-30%.
In general, the resin and/or oligomer, the photoinitiator and the reactive monomer solvent are used as carriers of the anti-counterfeiting color paste to realize the anti-counterfeiting mark jet printing function. In order to ensure that the anti-counterfeiting mark printed by ultraviolet light curing anti-counterfeiting ink-jet ink can have better adhesive force on various base materials, excellent water resistance, solvent resistance and the like, the carrier is preferably resin and/or oligomer, photoinitiator and reactive monomer solvent, so that the anti-counterfeiting mark has better comprehensive performance.
The preparation method of the ultraviolet light curing anti-counterfeiting ink-jet ink comprises the following steps:
and mixing the anti-counterfeiting color paste, resin and/or oligomer, a photoinitiator and a reactive monomer solvent to obtain the ultraviolet light curing anti-counterfeiting ink-jet ink.
In one embodiment, the photoinitiator is 10% diphenyl (2, 4, 6-trimethylbenzoyl) phosphine oxide TPO and 5% 2, 4-diethylthioxanthone.
In one embodiment, the reactive monomer solvent is 39% dipropylene glycol diacrylate (DPGDA) and 15% N-vinyl caprolactam (NVCL).
In one embodiment, the surfactant and stabilizer is 0.5% BYK-3760 and 0.5% G16 from Rahn.
In one embodiment, the content of the infrared absorption pigment in the ultraviolet light curing anti-counterfeiting ink-jet ink is more than or equal to 1wt%; the viscosity of the ultraviolet light solidified anti-counterfeiting ink-jet ink is 5 to 30cPs at 25 ℃, and the viscosity of the ultraviolet light solidified anti-counterfeiting ink-jet ink is 3 to 12mPs at the jet printing operation temperature of 40 to 50 ℃.
In order to ensure that the anti-counterfeit mark printed by the ultraviolet light curing anti-counterfeit ink-jet ink can be effectively identified, the ink must ensure that enough infrared absorption pigment is contained; the content of the infrared absorption pigment in the ink is more than or equal to 1 percent by mass percent; in order to ensure that the ink can be smoothly ejected, the viscosity of the ink at 25 ℃ is 5 to 30cPs, and the viscosity of the ink at the jet printing operation temperature of 40 to 50 ℃ is 3 to 12mPs.
The invention further aims to provide application of the ultraviolet light curing anti-counterfeiting ink-jet ink in preparation of anti-counterfeiting marks.
In one embodiment, the security mark can detect the security information under the infrared ray with the wavelength of 800-1200 nm.
In one embodiment, the security device is formed by means of jet printing.
In one embodiment, the jet printing is achieved by a piezojet.
The invention will be further described with reference to specific examples, which are not to be construed as limiting the scope of the invention, but rather as falling within the scope of the invention, since numerous insubstantial modifications and adaptations of the invention will now occur to those skilled in the art in light of the foregoing disclosure.
Unless otherwise indicated, materials, reagents, and the like referred to below are commercially available products well known to those skilled in the art; unless otherwise indicated, the methods are all methods well known in the art. Unless otherwise defined, technical or scientific terms used should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
Examples 1-1 to 1-18 and comparative examples 1-1 to 1-19
The preparation of the anti-counterfeiting color paste, wherein the grinding equipment is LAU DISPERSER DAS, the container of the grinding color paste is 250mL, the grinding time is 12h, zirconium beads with the surfaces coated with yttrium of 0.2mm are used as grinding balls, the filling amount of the grinding balls is 250g, grinding is carried out according to the feeding amount shown in the table 1, and then the filter element with the fineness of 0.22 mu m is used for fine filtering to obtain the anti-counterfeiting color paste. The properties are shown in Table 2.
TABLE 1
TABLE 2
As can be seen from tables 1 and 2, the infrared absorbing pigment was dispersed using at least one of Libo Solsperse J180, BYK-9151, BYK-168TF and EFKA-4310 as a dispersant, and had excellent dispersion effect when the mass ratio of the infrared absorbing pigment to the dispersant was 1 (0.5 to 0.9), as shown in examples 1-1 to 1-17; when the dispersant other than the above-mentioned dispersant is used for dispersion, or the mass ratio of the infrared absorbing pigment to the dispersant exceeds the range of 1 (0.5 to 0.9), the dispersibility of the infrared absorbing pigment is affected, resulting in an excessively large particle diameter of the pigment, or an excessively large viscosity of the color paste, or delamination and sedimentation of the pigment, resulting in problems of clogging of the nozzle at the time of printing, such as shown in comparative examples 1 to 19.
Examples 2-1 to 2-12 and comparative examples 2-1 to 2-4
The preparation of the white or black anti-counterfeiting color paste comprises the steps of using a grinding device of LAU DISPERSER DAS, using a container of 250mL of the grinding color paste, grinding for 12h, using zirconium beads with the surfaces coated with yttrium of 0.2mm as grinding balls, filling 250g of the grinding balls, using 1, 6-hexanediol diacrylate as a solvent, and using 30% of mass solids. Fine filtering the white slurry by using a filter element with the fineness of 1 mu m; the black pigment slurry was finely filtered using a filter cartridge having a fineness of 0.5 μm. The infrared absorbing slurry of the above example was mixed with white slurry or black slurry, respectively, in proportion. The specific amounts, mixing ratios, and performance test results are shown in table 3.
TABLE 3 Table 3
As can be seen from Table 3, when the infrared absorbing pigment and the black pigment are dispersed using at least one of Libo Solsperse J180, BYK-9151 and BYK-168TF as a dispersant, the pigment has excellent dispersion effect as shown in examples 2-1 to 2-3, examples 2-6 to 2-7 and examples 2-10; when the infrared absorbing pigment and the black pigment are dispersed using EFKA-4310 as a dispersant, the pigment dispersing effect is poor as in comparative examples 2-1 and 2-3. When the infrared absorbing pigment and the white pigment are dispersed using at least one of Libo Solsperse J180, BYK-168TF and EFKA-4310 as a dispersant, the pigment has an excellent dispersion effect as shown in examples 2-4 to 2-5, examples 2-8 to 2-9 and examples 2-11 to 2-12; when the infrared absorbing pigment and the white pigment were dispersed using BYK-9151 as a dispersant, the pigment dispersion effect was poor, as in comparative examples 2-2 and 2-4.
Examples 3-1 to 3-14 and comparative examples 3-1 to 3-3
The ultraviolet light solidified anti-counterfeiting ink-jet ink is prepared from the following raw materials in percentage by mass: 30% of the anti-counterfeiting color paste prepared in the previous embodiment, wherein the photoinitiator system comprises 10% of diphenyl (2, 4, 6-trimethylbenzoyl) phosphine oxide TPO and 5% of 2, 4-diethylthioxanthone, the reactive monomer solvent comprises 39% of dipropylene glycol diacrylate (DPGDA) and 15% of N-vinylcaprolactam (NVCL), and the surfactant and stabilizer comprise 0.5% of BYK-3760 and 0.5% of G16 of Rahn company; stirring the raw materials at 45 ℃ by a high-speed stirrer, and adjusting the viscosity of the raw materials at 45 ℃ in a mode of adding trimethylolpropane triacrylate (TMPTA); filtering with 0.5 μm filter core to obtain jet printing ink; finally, the printing is carried out on cardboard products and PET film substrates of Shandong solar paper factories by using a piezojet, and the technological parameters and the anti-counterfeiting mark printing results are shown in Table 4.
TABLE 4 Table 4
The results of examples 3-1 to 3-14 show that the anti-counterfeiting marks printed by the ink can be detected by a detection instrument under the infrared rays of 800-1200 nm. The results of comparative examples 3-1 to 3-3 show that the anti-counterfeit mark printed by the ink without the anti-counterfeit color paste of the invention can not detect the anti-counterfeit information by the detection instrument under the infrared rays of 800-1200 nm. Therefore, the ink jet printing anti-counterfeiting mark configured by the anti-counterfeiting color paste can effectively carry out product tracing management and anti-counterfeiting management.
The technical features of the claims and/or the description of the present invention may be combined in a manner not limited to the combination of the claims by the relation of reference. The technical scheme obtained by combining the technical features in the claims and/or the specification is also the protection scope of the invention.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The ultraviolet light curing anti-counterfeiting ink-jet ink with high adhesive force is characterized by comprising the following raw materials in percentage by mass: 5-30% of anti-counterfeiting color paste, 0-20% of resin and/or oligomer, 10-25% of photoinitiator, 30-70% of reactive monomer solvent, and 0.5-3% of surfactant and stabilizer;
the preparation method of the anti-counterfeiting color paste comprises the following steps:
Mixing and grinding an infrared absorption pigment, a dispersing agent and a solvent to ensure that the particle size of the infrared absorption pigment is less than or equal to 50nm, and finely filtering by using a filter element with the fineness of less than or equal to 0.22 mu m to obtain anti-counterfeiting color paste;
the dispersing agent is one or more of Lubo Solsperse J180, BYK-9151, BYK-168TF and EFKA-4310; the solvent is one or more of isobornyl acrylate, tetrahydrofurfuryl acrylic acid and 1, 6-hexanediol diacrylate; the surfactant and stabilizer was 0.5% BYK-3760 and 0.5% G16 from Rahn.
2. The ink of claim 1, wherein the infrared absorbing pigment is one or both of cesium tungsten oxide and lanthanum hexaboride.
3. The ink according to claim 1, wherein the mass ratio of the infrared absorbing pigment to the dispersant is 1 (0.5 to 0.9).
4. The ink of claim 1, wherein the infrared absorbing pigment has a particle size of 50nm or less.
5. The ink of claim 1, wherein the anti-counterfeit color paste further comprises a white pigment and a black pigment.
6. The ink according to claim 5, wherein the mass ratio of the infrared absorbing pigment to the white pigment or the black pigment is (0.1-2): 1.
7. The ink of claim 1, wherein the anti-counterfeit color paste has a mass solids content of 10-30% and a viscosity of 15-50 cPs at 25 ℃.
8. The method for preparing the ink according to any one of claims 1 to 7, characterized by comprising the steps of:
mixing the anti-counterfeiting color paste, resin and/or oligomer, photoinitiator and a reactive monomer solvent to obtain ultraviolet light curing anti-counterfeiting ink-jet ink;
The photoinitiator is 10% of diphenyl (2, 4, 6-trimethylbenzoyl) phosphine oxide TPO and 5% of 2, 4-diethyl thioxanthone; the reactive monomer solvent was 39% dipropylene glycol diacrylate (DPGDA) and 15% N-vinylcaprolactam (NVCL).
9. The method according to claim 8, wherein the content of the infrared absorption pigment in the ultraviolet light curing anti-forgery ink-jet ink is not less than 1wt%; the viscosity of the ultraviolet light solidified anti-counterfeiting ink-jet ink is 5 to 30cPs at 25 ℃, and the viscosity of the ultraviolet light solidified anti-counterfeiting ink-jet ink is 3 to 12mPs at the jet printing operation temperature of 40 to 50 ℃.
10. The use of an ultraviolet light curable anti-counterfeit inkjet ink according to any one of claims 1 to 7 for the preparation of anti-counterfeit labels which are detectable in the presence of infrared light having a wavelength of 800 to 1200 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411060620.4A CN118956206A (en) | 2023-10-31 | 2023-10-31 | A UV-curable anti-counterfeiting inkjet ink with high adhesion and its preparation method and application |
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| CN202311431236.6A CN117467310A (en) | 2023-10-31 | 2023-10-31 | Anti-counterfeiting color paste, ultraviolet light curing anti-counterfeiting ink-jet ink, and preparation methods and applications thereof |
| CN202411060620.4A CN118956206A (en) | 2023-10-31 | 2023-10-31 | A UV-curable anti-counterfeiting inkjet ink with high adhesion and its preparation method and application |
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| CN202311431236.6A Pending CN117467310A (en) | 2023-10-31 | 2023-10-31 | Anti-counterfeiting color paste, ultraviolet light curing anti-counterfeiting ink-jet ink, and preparation methods and applications thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009108324A (en) * | 2008-12-12 | 2009-05-21 | Sumitomo Metal Mining Co Ltd | Anti-forgery ink and forgery prevented printed matter |
| CN107429097B (en) * | 2015-01-27 | 2020-10-27 | 住友金属矿山株式会社 | Near-infrared absorbing fine particle dispersion, method for producing same, forgery-preventing ink composition, and forgery-preventing printed matter |
| WO2016121801A1 (en) * | 2015-01-27 | 2016-08-04 | 共同印刷株式会社 | Infrared-absorbent ink |
| JP6541400B2 (en) * | 2015-04-13 | 2019-07-10 | 共同印刷株式会社 | Anti-counterfeit ink and printed matter thereof |
| TWI778084B (en) * | 2017-06-19 | 2022-09-21 | 日商住友金屬礦山股份有限公司 | Anti-counterfeit ink composition, anti-counterfeit ink, anti-counterfeit printed matter, and method for producing the anti-counterfeit ink composition |
| JP7259748B2 (en) * | 2017-07-24 | 2023-04-18 | 住友金属鉱山株式会社 | Dispersed powder of infrared-absorbing fine particles, dispersion liquid containing dispersed powder of infrared-absorbing fine particles, ink containing dispersed powder of infrared-absorbing fine particles, anti-counterfeiting ink, and printed matter for preventing counterfeiting |
| KR102615612B1 (en) * | 2017-07-24 | 2023-12-20 | 스미토모 긴조쿠 고잔 가부시키가이샤 | Grinding masterbatch containing infrared-absorbing fine particles, dispersion containing pulverizing masterbatch containing infrared-absorbing fine particles, ink containing infrared-absorbing material, anti-counterfeiting ink using them, anti-counterfeiting printing film, and method for producing pulverized masterbatch containing infrared-absorbing fine particles |
| JP7358785B2 (en) * | 2019-06-05 | 2023-10-11 | 住友金属鉱山株式会社 | Anti-counterfeiting ink composition, anti-counterfeiting ink, anti-counterfeiting printed matter |
| JP6937998B2 (en) * | 2019-12-19 | 2021-09-22 | 大日本印刷株式会社 | Laminated body, and printing or drawing method for the laminated body |
| WO2022163499A1 (en) * | 2021-01-29 | 2022-08-04 | 共同印刷株式会社 | Infrared-absorbing ultraviolet-curable ink, and infrared-absorbing printed matter |
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