With green With the acceleration of the printing strategy, the construction of China's green printing system has become more and more perfect. One of the important performances is the development of printing technology, supporting facilities, new printing technology and market applications, which are dedicated to promoting green production. The number and quality of new processes have been greatly improved, which has played an important role in promoting the in-depth development of green printing. On the other hand, the strong promotion of green printing has also brought momentum to the development of the emerging printing technology market and promoted The application of various new environmental protection technologies and supporting technologies can be said to complement each other.
According to the 2015 China Green Printing Enterprise Annual Survey Report, green printing technology is mainly divided into four major application categories:
Application of environmentally friendly printing technology
Environmentally friendly printing technology is targeted at enterprise applications in flexographic printing, waterless offset printing and digital printing . These three printing technologies have been developed for many years, but their environmental attributes have not been fully valued before the implementation of the green printing strategy. The development of green printing has greatly promoted the application of these technologies, especially the maturity of technology. Great progress has been made.
Specifically, these three technologies are currently used in green printing companies. Flexographic printing, 93 companies said they are in use, accounting for only 19%; waterless offset printing, 75 companies said they are using, accounting for only 15%; digital printing, 235 companies said they are using, accounting for 48% .
From this data, the use rate of flexographic printing and waterless offset printing in green printing enterprises is obviously low, and the popularization and application of digital printing has achieved great growth in recent years. Nearly half of the green printing companies have introduced digital Printing system. In terms of the characteristics of the digital printing system itself, this technology is in line with the current trend of a large number of short-running business in the printing market, and saves the cumbersome processes such as film, imposition and printing in traditional printing, saving materials, labor and time. It also meets the purpose of environmental printing. Coupled with the rapid development of digital printing technology and the promotion of suppliers in recent years, digital printing systems have achieved relatively rapid popularity in many traditional printing companies, and also have outstanding performance in green printing companies.
Application of environmentally friendly printing technology 　　
Application of green plate making technology
At present, the most common green plate-making technologies on the market are computer-to-plate ( CTP ) and nano-green inkjet plate-making systems. Their applications in green printing companies are as follows: 402 companies that are using CTP for direct plate-making, accounting for The ratio reached 82%; only 70 companies using nano-green inkjet plate making systems accounted for 14%. From the perspective of technology development, CTP technology is relatively mature, and has entered the stage of full-scale popularization in recent years. Nano-platemaking technology is relatively an innovative technology with relatively short development time and is still in its infancy in the market.
From the perspective of environmentally friendly production, computer-to-plate (CTP) technology is an improvement over the laser-based technology used in the past. It uses a digital workflow to directly convert text and images into numbers and directly generate plates. The film material, the process of artificial imposition, the semi-automatic or fully automatic printing process are omitted. However, CTP technology still uses photosensitive materials, and there are complicated processes such as sensitization, development, fixing, rinsing, etc., and there are chemical pollution problems. In this sense, CTP can only be regarded as a relatively environmentally friendly plate making technology. At the same time, we should see that the development of environmental protection technology also has a historical process of gradual improvement. Combined with the development history of China's printing industry, the large-scale popularization of CTP in green printing enterprises should be regarded as a significant improvement. .
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