Anti-counterfeiting metamerism ink as well as preparation method and printing method of anti-counterfeiting metamerism ink

A metamerism and ink technology, applied in ink, household utensils, applications, etc., can solve the problems of color difference highlighting, etc., and achieve the effect of long effective time, not easy to be copied, and effective time is not easy to change

Active Publication Date: 2015-12-09
永发印务(东莞)有限公司
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AI-Extracted Technical Summary

Problems solved by technology

Metameric inks are basically the same color as ordinary inks under natural light, but when observed with special instruments (such as infrared...
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Method used

In summary, the present invention detects and evaluates the various properties of the printed matter completed by the metamerism ink prepared and adopting the ink according to the printing process of the present invention, and its anti-counterfeiting technology includes metamerism anti-counterfeiting, two-dimensional Code anti-counterfeiting, color-changing anti-counterfeiting and other technologi...
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Abstract

The invention discloses anti-counterfeiting metamerism ink. The anti-counterfeiting metamerism ink is prepared from 50 to 60 mass percent of metamerism pigments, 14 to 20 mass percent of silicon modified acrylate resin, 6 to 9 mass percent of butyl acrylate, 4 to 8 mass percent of epoxy resin, 2 to 3 mass percent of near-infrared absorbing agents, 3 to 5 mass percent of isopropanol, 3 to 5 mass percent of absolute ethyl alcohol, 4 to 8 mass percent of deionized water, 0.5 to 1.5 mass percent of secondary butyl amine,0.5 to 1 mass percent of terpilenol, 0.2 to 0.5 mass percent of antifoaming agents and 0.1 to 0.3 mass percent of flatting agents. The invention also discloses a preparation method of the anti-counterfeiting metamerism ink and a printing method adopting the anti-counterfeiting metamerism ink. The fusion of various anti-counterfeiting technologies in the same anti-counterfeiting region is realized; the anti-counterfeiting region shows different colors under the illumination of different light sources; the recognition is easy; the accepting degree of people on products can be improved, so that the product has multiple anti-counterfeiting performance; the anti-counterfeiting intensity is high.

Application Domain

Technology Topic

Image

  • Anti-counterfeiting metamerism ink as well as preparation method and printing method of anti-counterfeiting metamerism ink
  • Anti-counterfeiting metamerism ink as well as preparation method and printing method of anti-counterfeiting metamerism ink
  • Anti-counterfeiting metamerism ink as well as preparation method and printing method of anti-counterfeiting metamerism ink

Examples

  • Experimental program(3)

Example Embodiment

[0050] Example 1
[0051]This embodiment discloses an anti-counterfeiting metameric ink, which, in mass percentage, includes the following components: 55% metameric pigment, 18% silicon-modified acrylic resin, 5.5% butyl acrylate, 5% Epoxy resin, 2% near infrared absorber, 3% isopropanol, 5% absolute ethanol, 4% deionized water, 1.5% sec-butylamine, 0.5% terpineol, 0.2% Antifoam and 0.3% leveling agent.
[0052] like figure 1 As shown, the present embodiment provides a printing method using anti-counterfeiting metameric ink, comprising the steps of:
[0053] S1, prepare anti-counterfeiting metamerism ink according to above-mentioned mass percentage, and ensure that the viscosity of this anti-counterfeiting metamerism ink is 3# Zahn cup to measure 18-20 seconds;
[0054] S2, prepare the common ink with the same color as in step S1, and ensure that the viscosity of the common ink is measured for 15-20 seconds with a 3# Zahn cup;
[0055] S3, using offset printing process at 157g/m 2 Printing ink barcodes containing infrared absorbers on coated paper;
[0056] S4, adopt the common ink in step S2 to print a layer of common ink on the ink barcode in step S3;
[0057] S5, adopt the anti-counterfeiting metamerism ink in step S1 at 157g/m 2 The area other than the ink barcode on the coated paper is printed with graphics to form a graphic area;
[0058] S6, adopt the common ink in step S2 to print a layer of common ink on the graphic area in step S5;
[0059] S7, using a filter to observe and judge the color difference between the printing samples of the metameric ink and the common ink in steps S4 and S6.
[0060] In this embodiment, ordinary ink is printed and covered on the barcode of the ink containing infrared absorber. Under sunlight, only the shape printed by the ordinary ink can be seen, but the barcode of the anti-counterfeiting ink cannot be seen. After the detection of the instrument, the barcode can be read to identify the authenticity.

Example Embodiment

[0061] Embodiment 2
[0062] This embodiment discloses an anti-counterfeiting metameric ink, which in mass percentage includes: 60% metameric pigment, 15% silicon-modified acrylic resin, 6% butyl acrylate, 4% epoxy resin , 2.2% near infrared absorber, 3% isopropanol, 3% absolute ethanol, 4% deionized water, 1% sec-butylamine, 1% terpineol, 0.5% defoamer and 0.3% leveling agent.
[0063] like figure 2 As shown, the present embodiment provides a printing method using anti-counterfeiting metameric ink, comprising the steps of:
[0064] S1, prepare anti-counterfeiting metamerism ink according to above-mentioned mass percentage, and ensure that the viscosity of this anti-counterfeiting metamerism ink is 3# Zahn cup to measure 18-20 seconds;
[0065] S2, prepare the common ink with the same color as in step S1, and ensure that the viscosity of the common ink is measured for 15-20 seconds with a 3# Zahn cup;
[0066] S3, using offset printing process at 157g/m 2 The anti-counterfeiting metamerism ink in step S1 is printed on the green pixels of the coated paper;
[0067] S4, adopt the anti-counterfeiting metamerism ink in step S1 at 157g/m 2 The area outside the green pixels on the coated paper is printed with graphics to form a graphics area;
[0068] S5, using the common ink in step S2 to print a layer of common ink on the graphic area in step S4;
[0069] S6, using a filter to observe and judge the color difference between the printing samples of the metameric ink and the common ink in steps S3 and S5.
[0070] In this embodiment, metameric anti-counterfeiting ink is used to print and cover the green pixels. Under natural light irradiation, the green pixels cannot appear, but the printed product is observed with a red filter. Since the filter is red, it will absorb green. The light in the red band passes through, so the bottom layer of the image coated with green pixels becomes darker, while the image of the printed infrared invisible ink becomes brighter in color, forming a sharp contrast, and the authenticity can be distinguished.
[0071] In this example, an offset printing process is used to print a layer of ordinary ink on the graphic area printed with the metameric anti-counterfeiting ink, and the effects of the two inks are observed and compared. Metamerism anti-counterfeiting ink is based on the premise of a fixed and qualified observer and a fixed light source. If any one of these conditions is changed, the two inks will show different colors.

Example Embodiment

[0072] Embodiment 3
[0073] This embodiment discloses an anti-counterfeiting metameric ink, comprising: 50% metameric pigment, 16% silicon-modified acrylic resin, 8% butyl acrylate, 8% epoxy resin, 2.7% acrylic resin Infrared absorber, 4% isopropanol, 3% absolute ethanol, 6% deionized water, 0.5% sec-butylamine, 1.5% terpineol, 0.2% defoamer and 0.1% fluid leveling agent.
[0074] like image 3 As shown, the present embodiment provides a printing method using anti-counterfeiting metameric ink, comprising the steps of:
[0075] S1, prepare anti-counterfeiting metamerism ink according to the described mass percentage of claim 4, and ensure that the viscosity of this anti-counterfeiting metamerism ink is 3# Zahn cups to measure 18-20 seconds;
[0076] S2, prepare the common ink with the same color as in step S1, and ensure that the viscosity of the common ink is measured for 15-20 seconds with a 3# Zahn cup;
[0077] S3, using offset printing process at 157g/m 2 Printing ink barcodes containing infrared absorbers on coated paper;
[0078] S4, adopt the common ink in step S2 to print a layer of common ink on the ink barcode in step S3;
[0079] S5, adopt the anti-counterfeiting metamerism ink in step S1 at 157g/m 2 The area other than the ink barcode on the coated paper is printed with graphics to form a graphic area;
[0080] S6, using the common ink in step S2 to print common ink on the area outside the graphic and text area in step S5 to form a figure with the same shape and size as in step S5;
[0081] S7, using an infrared scanner to scan, observe and judge the printing samples of the metameric ink and the common ink in steps S4 and S6.
[0082] In this example, a barcode containing an infrared absorber is printed on the bottom layer, and then ordinary ink is printed on it. People directly observe without any tools or measures, and can only observe indistinguishable images, but the bottom layer contains infrared The ink of the absorbent can be detected by an infrared scanner, which can reveal anti-counterfeiting barcodes.
[0083] The metameric ink prepared by the invention shows the same color under the same light source, but its spectral characteristic curves are different. But under infrared light, the two inks showed different colors. Through testing, the two inks have different spectral characteristic curves. Therefore, the metameric ink of the present invention has the advantages of good concealment, not easy to be copied, long effective time and not easy to change.
[0084] To sum up, the present invention detects and evaluates the properties of the prepared metameric ink and the printed matter completed by the printing process of the present invention. The anti-counterfeiting technologies include metameric anti-counterfeiting, two-dimensional code anti-counterfeiting, Color-changing anti-counterfeiting technology, and realize the integration of various anti-counterfeiting technologies in the same anti-counterfeiting area, so that the product has multiple anti-counterfeiting properties and high anti-counterfeiting strength. The anti-counterfeiting area presents different colors under the illumination of different light sources, which is easy and interesting to identify, and can improve people's recognition of the product.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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