30results about How to "Improve anti-counterfeiting level" patented technology

The invention provides a preparation method of an anti-counterfeiting paper product applied with anti-counterfeiting materials at certain positions, and the preparation method comprises the steps of: mixing the anti-counterfeiting materials with a bonding agent and a medium to obtain the anti-counterfeiting material mixture; putting the anti-counterfeiting material mixture in an electrically controlled ejection device which is provided with an ejection pipe and an ejection needle and running a paper machine to apply the anti-counterfeiting material mixture to the preset page of the paper product through the ejection needle. The applying positions of the anti-counterfeiting material mixture are the wet parts or the adhesive-applied part. The page of the anti-counterfeiting paper product prepared by the process comprises granular anti-counterfeiting materials, the anti-counterfeiting materials are firmly bonded with the paper product and can be applied in a positioning way, thereby avoiding the limitation of the full version application way. The invention is particularly applicable to banknote paper, securities, notes and other anti-counterfeiting paper products.

The invention provides a triple anti-counterfeiting material, its raw material composition includes a carrier and an anti-counterfeiting powder, the carrier is selected from products made of polyvinyl alcohol, polyacryl alcohol, polyamide or viscose fiber, and the anti-counterfeiting powder includes temperature change Materials, fluorescent materials and infrared materials, the content of temperature-changing materials in the anti-counterfeiting material is 1-6% of the weight of the carrier, and the content of fluorescent materials and infrared materials is 0.5-3% of the weight of the carrier respectively; the above-mentioned multifunctional anti-counterfeiting materials not only enhance the The anti-counterfeiting effect of the prior art (to achieve triple anti-counterfeiting), and the firmness of the combination with the paper base is also improved, which solves the problem of poor publicity of the prior art.

The invention provides a plastic base material for making secure files. The plastic base material comprises a polymer supporting layer; and a polymer molding layer adhered to the surface of the polymer supporting layer, the polymer molding layer is locally deleted to expose the polymer supporting layer, and the surface of the exposed polymer supporting layer is provided with a projecting picture and test to form a perspective window with concave and convex hand feeling. The perspective window which cannot form the concave and convex hand feeling can be copied or printed on a plastic film, so the plastic base material has high anti-counterfeit ability.

The invention discloses an adjustable dual-mode composite fluorescent material and its preparation method and anti-counterfeiting application. Firstly, through Cd 2+ The ion is coordinated with the tetracarboxylic acid ligand to prepare a chemical formula {[Cd 4 (L) 2 (H 2 O) 3 ]·4.5H 2 O} n The metal organic framework material of the three-dimensional structure; The preparation method comprises: take cadmium source, tetracarboxylic acid ligand, polyvinylpyrrolidone, dissolve in N, N dimethyl formamide and water mixed solution, place 80 ℃ environment Under heating and reflux for 3 days, colorless crystals were obtained, which were collected and dried to obtain the metal organic framework material with the three-dimensional structure. On this basis, the present invention further prepares an adjustable dual-mode composite fluorescent material, uses the mixture of the composite fluorescent material solution as an anti-counterfeiting ink, writes and draws some signals and pictures on paper, and the photoluminescence conversion can be repeatedly realized, showing its Versatility and great potential to increase the level of security against counterfeiting.

The invention relates to a quantum dot fluorescent anti-counterfeiting paper and a manufacturing method thereof. The invention first provides the quantum dot fluorescent anti-counterfeiting paper, which contains quantum dots. The invention further provides the manufacturing method of the quantum dot fluorescent anti-counterfeiting pape; and the method comprises the following steps of: compounding the quantum dots into a carrier material; and in the papermaking process, adding the carrier material compounded with the quantum dots to the paper, so as to obtain the quantum dot fluorescent anti-counterfeiting paper. According to the invention, the application of a quantum dot fluorescent material in counterfeiting prevention of papers has the advantages of advanced technology, strong anti-counterfeiting capacity, large counterfeiting difficulty and so on. Through the adoption of the quantum dot fluorescent anti-counterfeiting paper provided by the invention, public identification counterfeiting prevention can be achieved by using a visible fluorescence color of a common fluorescent ultraviolet lamp and spectral analysis can be also carried out on the paper by using a fluorospectro photometer so as to achieve machine readable counterfeiting prevention, so that the anti-counterfeiting level of the paper is increased.

The invention discloses a holographic anti-counterfeiting method for a coin with a micro relief profile on the surface and a pressing die thereof. The method comprises steps: 1, an optical hologram of the coil surface is recorded; 2, the optical hologram of the coil surface is reproduced; 2, the numeric value of a computed hologram of the coil surface is computed; 4, a binary optical hologram of the micro relief on the coil surface is designed, and the computed hologram is converted into a binary optical surface micro relief profile; 5, according to the binary optical hologram of the micro relief on the coil surface, a micro relief profile on the steel surface of the die is determined; and 6, a binary optical processing method is adopted to process the micro relief profile on the steel surface of the die. The method can enhance the anti-counterfeiting level of the coin and the processing seal thereof, and a novel, simple and quick first-line anti-counterfeiting technology is provided for the public.

The invention relates to machine-readable anti-counterfeit paper with color artistic watermarking effects and a manufacturing method thereof. The anti-counterfeit paper provided by the invention has a sandwich structure formed by two pieces of paper and a piece of artistic pattern paper disposed between the two pieces of the paper. The invention also provides the manufacturing method of the machine-readable anti-counterfeit paper with the color artistic watermarking effects. The anti-counterfeit paper provided by the invention is an innovation on the basis of present anti-counterfeit watermarking paper. On the basis of the present paper watermarking anti-counterfeit, the anti-counterfeit paper provided by the invention adds a plurality of anti-counterfeit elements to the paper watermarking part, thus achieving an effect of different transparencies of watermarking patterns. In addition, by utilizing paper composite technology, the anti-counterfeit paper provided by the invention achieves manufacture of color watermarks and functional watermarks, attaches color and different anti-counterfeit requirements to the watermarks, and improves the anti-counterfeit level of the paper.