Anti counterfeiting technology of the hottest chem

Anti counterfeiting technology of chemical ink

concept and principle:

anti counterfeiting ink: ink with anti-counterfeiting performance. Anti counterfeiting ink is an extremely important anti-counterfeiting technology field, which has a wide range of applications and involves many disciplines. It is a special ink with anti-counterfeiting function by adding some special substances into the ink, which is specially developed and applied to the printing of anti-counterfeiting printing products. Its formula and process are confidential and should be strictly managed; Its products should also be supplied to designated manufacturers at fixed points and on a regular basis, and special personnel should be assigned to use the products on a fixed machine to strictly prevent proliferation

1) photosensitive anti-counterfeiting ink:

ink that can emit visible light under light irradiation. The light here refers to visible and invisible light such as ultraviolet light, infrared light and sunlight

a. UV fluorescent ink: ink that can emit visible light (nm) under ultraviolet (nm) irradiation. It usually refers to the visible fluorescent anti-counterfeiting printing ink excited by short wave ultraviolet, with the excitation wavelength of 254nm. The visible fluorescent anti-counterfeiting printing blow molding machine excited by long wave ultraviolet is one of the categories with the largest commercial deficit in the national plastic machine market, with the excitation wavelength of 365nm

b. photochromic ink excited by sunlight: an anti-counterfeiting printing ink that can emit visible light of nm under sunlight. From the perspective of future application, this kind of ink changes color due to the action of sunlight. In fact, it also changes color due to ultraviolet radiation

c. infrared anti-counterfeiting ink: an ink made by matching the different absorption characteristics of infrared (nm), which can be detected or recognized by instruments. A pair of substances with different infrared absorption characteristics are added to the ink. Products printed with infrared ink have no reaction under ordinary light, while corresponding signals or graphics can be observed under infrared light detection

2) thermal anti-counterfeiting ink:

ink that can change color under the action of heat. It is usually divided into reversible and irreversible thermochromic anti-counterfeiting inks; Usually, the color change temperature is Celsius. Hand temperature color changing anti-counterfeiting ink is a kind of thermal color changing anti-counterfeiting ink, which refers to the ink that can change color under the action of Celsius temperature. The principle of thermochromism is to make physical or chemical changes of discolored compounds under heating, resulting in changes in their light absorption

3) pressure sensitive anti-counterfeiting ink:

ink that can appear color under the action of pressure friction. It is made by adding special chemical reagents or color changing substances to the ink. When the colored or invisible pictures and texts printed with this ink are rubbed and pressed with hard objects or tools, chemical pressure color change or microcapsule rupture will occur, and the dye will leak, resulting in color (red, blue, ink, green, purple, yellow, etc.). You can choose the display color and design the secret mark according to the user's requirements

4) magnetic anti-counterfeiting ink:

using magnetic powder materials as a function, all the operations of the experiment rely on the anti-counterfeiting printing ink made of CRT functional components. It is the most commonly used anti-counterfeiting ink, which is characterized by deep appearance color and simple detection instrument. It is mostly used in ticket anti-counterfeiting

5) optical variable anti-counterfeiting ink:

it is made of multilayer optical film flake powder that can produce optical interference as a dispersant, and the ink is completely different in color when the light incidence angle is 90 ° C and 30 ° C respectively. This technology is extremely complex and expensive. Few countries can produce it, and it has been used in foreign banknotes

6) anti alteration and anti-counterfeiting ink:

ink with color chemical reaction to the chemical substance used for painting

Application

common types include anti-counterfeiting fluorescent powder, temperature discoloration powder, anti-counterfeiting fluorescent long and short fibers, UV anti-counterfeiting fluorescent ink, infrared anti-counterfeiting fluorescent ink, anti-counterfeiting thermal ink, ink with heating discoloration and sunlight discoloration, etc. (for example, photochromic inks that change color under the sun and UV light, and thermotropic inks that change color at different temperatures.) These anti-counterfeiting products can be widely used in the fields of tobacco and alcohol, food, printing, papermaking, textiles, famous clothing labels and so on, and have unique anti-counterfeiting effects

technical description:

UV phosphor: red, yellow, green

temperature variable material: color to colorless reversible (blue, red, black), colorless to colorless reversible (red, green)

fluorescent anti-counterfeiting ink: fluorescent red, fluorescent yellow, fluorescent blue, fluorescent green, red to fluorescent red, red to fluorescent yellow

temperature variable reversible anti-counterfeiting ink: (pink, blue, black, orange) colored → colorless → colored (pink, green) colorless → colored → colorless

temperature sensitive discoloration: the temperature sensitive discoloration series can change the color when the temperature changes. The discoloration temperature can be set in advance, and the changed color combination can also be set in advance. As long as you play your imagination, new products will emerge in endlessly. Photosensitive discoloration photosensitive discoloration: imagine how wonderful the colorful discoloration clothing changes in the light changing environment. There are different colors indoors and outdoors, on cloudy and sunny days, clothing, etc

Technology Review:

belongs to the current general traditional anti-counterfeiting technology, and its simple and easy identification effect is loved by the public; However, the threshold of technology is too low, there are many domestic manufacturers, and the anti-counterfeiting effect is general. This technology is suitable for combined use with other anti-counterfeiting, such as integrated ink anti-counterfeiting, code ink composite, laser ink composite, packaging ink composite and so on