What technology is the best printing method for packaging printing
E-books, e-newspapers, etc., may replace current paper books and paper newspapers in the future. It is unlikely that electronic packaging or virtual packaging will appear. The development of various new technologies will not only affect the development of packaging and printing, but also greatly promote the development of packaging and printing. For example, the development of computer direct plate making (CTP) can better improve the speed and quality of packaging printing plate making, and better meet the requirements of high quality and short cycle. With the emergence of new technologies and products, the packaging market will be further expanded. In this sense, packaging printing is a printing industry that will never decline.
offset printing
Offset printing is mainly used for printing paper-based materials. Printing on plastic films has many limitations. The printing format of the sheet-fed offset printing machine can be changed and is more flexible. At present, the printing format of most web offset presses is fixed. Its application is limited. With the development of technology, web offset presses are also constantly being improved. Now we have successfully developed a web offset press that can change the printing format. At the same time, it successfully developed a web offset printing machine with seamless cylinder. The printing cylinder of this web offset press is seamless, and in this respect it is already the same as the web gravure press. Offset presses are also continuously improved in printing functions. After improving and adding some parts, corrugated cardboard can be printed. After improvement and installation of UV drying device, you can print UV prints. The above improvements continue to expand the use of offset presses in the field of packaging and printing. Water-based inks for offset printing will soon be put into practical use. Offset printing is another step here.
Gravure
Gravure printing, the ink color is full and has a three-dimensional sense. Among various printing methods, the printing quality is the best. And the printing quality is stable. Long life of printing plate. Suitable for mass printing. Gravure printing can print very thin materials, such as plastic films. However, gravure platemaking is complicated and expensive, and its benzene-containing ink pollutes the environment. These two issues have affected the development of gravure. In particular, the reduction of a large number of large prints, the short version also requires a large increase in low-cost prints, making gravure continue to lose the market.
Flexo
The main advantages of flexo printing are: 1. The equipment is simple in structure and easy to form a production line. Among the three printing equipments of offset printing, concave printing and flexographic printing, the flexographic printing machine has the simplest structure. Therefore, the price of flexo printing machine is relatively low, and the equipment investment of printing enterprises is low. At the same time, due to the simple equipment, convenient operation and maintenance. At present, most flexo printing machines are connected with processing technologies such as Tang Jin, glazing, cutting, slitting, die cutting, creasing, punching, and windowing to form production lines. Greatly improve labor productivity. 2. Wide range of applications and substrates. Flexo printing can print almost all printed materials and use all substrates. Corrugated paper printing is unique in packaging printing. 3. Water-based inks are widely used. Among the three printing methods of offset printing, gravure printing and flexographic printing, only flexographic printing currently uses water-based ink widely. Non-toxic and non-polluting, which is beneficial to the protection of the environment and is particularly suitable for packaging and printing. 4. Lower cost. The low cost of flexo printing has formed a broad consensus abroad.
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