Nowadays, the requirements of environmental protection and high quality and efficiency in industrial production make advanced science and technology much favored, and nano printing technology, which has been at the center of the topic, has also attracted more and more attention. So, what happens when nano-printing technology meets carton printing? What is nano-printing technology The nano-printing technology invented by the father of digital printing, Banny Landa, has been placed on the hope of filling the gap between offset printing and digital printing since its birth. The way it works is this: first inject the Landa nano ink into the print head, which is an aqueous ink containing nano-scale pigment particles. When printing, the ink is first transferred to a heated blanket, and then transferred to the substrate. The compatible substrates include standard coated paper or non-coated paper without special treatment, plastic packaging film or label. Paper etc. Nano image printing technology, in the final analysis, is a new type of imprinting transfer technology, which will be widely used in the production of nano concave and convex graphics. Nano image printing technology is to use a mold with nano concave and convex images as a "printing plate", using silicon wafers or glass sheets coated with a polymer coating in advance as a substrate (printed object), with the cooperation of corresponding equipment and appliances After precise imprinting and shaping, the mold is separated from the substrate. At this time, people will find that the nano-relief image present on the surface of the mold is transferred to the polymer film on the surface of the substrate without any errors. The transferred image has the same size as the concave and convex pattern on the surface of the mold, and the depth is the same. But the shape is just the opposite (yin to yang image), that is, the protrusion of the former is exactly where the latter is recessed, and vice versa. This technique of using the principle of a printing stamp to transfer out a pattern with nano concave and convex patterns is called nano image printing technology. Advantages of nano-printing technology The biggest advantage of nano-printing technology is its ultra-small ink particles. After reaching the nanometer size, the characteristics of many materials will change. The performance of nano inks in this regard is very good. Due to its hard texture, this ink is extremely resistant to abrasion and scratches. Nano ink can absorb more light, so it can provide a wider CMYK color gamut. In addition, the tiny pigment particles can make the ink film more uniform and the image clearer. Once the nano ink is transferred to the heated blanket, the moisture contained in it will evaporate and leave an ultra-thin ink film. So people don't have to wait for the ink film to dry-which is common in offset and digital printing processes-and can go directly to the next production step. In addition, nano printing also allows users to print more colors in the printing area without oversaturation. Nano ink can print up to 8 colors with a resolution between 600dpi and 1200dpi. The speed on sheet and web printers can reach 13,000 pages / hour and 200 meters / minute respectively. Application of Nano Printing Technology in Carton Printing In the carton printing process, the ink material plays a decisive role in the printing quality of the product. Then let's introduce a new ink, which can help to improve the printing quality. The printing of paper on the carton is inseparable from the ink. The ink produced by the traditional process will inevitably have one or other disadvantages in use, which directly or indirectly affects the production efficiency and quality of the carton. For example, ordinary inks generally need to add surfactants in the production process to reduce the surface tension of the binder, so as to increase the affinity between the molecules. Nanoparticles themselves have better surface wettability, they are adsorbed on the surface of the pigment particles in the ink, so that the ink's lipophilicity and wettability are significantly improved, which can better improve the printability of the ink. The so-called nano-particles refer to metal particles and their oxide particles and non-metal particles, including organic particles or inorganic particles. The difference in the composition and characteristics of the nanoparticles makes the characteristics of the inks produced to a certain degree. Nano metal particles can absorb all wavelengths of light, and they appear black, but they have a scattering effect on the light. Therefore, the ink added with metal nanoparticles has higher purity and density. This is a process effect that cannot be achieved by adding general materials. This is the basic law of actual performance. Using high technology to make resins, pigments, fillers, etc. into nano-scale materials, it can also achieve the effect of reducing the amount of pigments without reducing the hiding power of the ink. If it is added to UV ink, it can also speed up the curing speed, effectively avoid the shrinkage and wrinkling of the ink film. In addition, after the surface of the semiconductor nanoparticles is chemically modified, the medium around the particles can strongly affect their optical properties. Adding them to the yellow and cyan inks makes the nano inks, which can increase the purity of the yellow and cyan inks and make the color of the printed product It is more vivid, the layers are richer, the subtle layers of the image are obviously enhanced, and the lightfastness and anti-discoloration performance of the blot can be improved. Because the various raw material components in nano inks are composed of nano particles, the smaller their molecular structure, the better the uniformity and fluidity, and the lower the friction coefficient of the printing plate, which is beneficial to prevent or reduce Quality faults such as paste, dirty, and off-set appear in the printing process, so as to better improve the printing quality of carton products.
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