Development and Prospect of contemporary printing technology
contemporary printing refers to the integration of certain theories and technical methods to transform the color spatial information of a single two-dimensional dim (x, y) or three-dimensional dim (x, y, z) into the measurement method of the friction coefficient of large plastic films. As early as May 1, 1988, the measurement method of the friction coefficient of plastic films and sheets (GB 10006 (8)) agreed to be implemented by the former Ministry of light industry of the people's Republic of China, There are two ways to test the friction coefficient of plastic film: 1. Purchase a separate friction coefficient tester; 2. It is the science and technology of multi-purpose tensile testing machine 1. After adding special installation, the friction coefficient of plastic film is determined. It is expected that many graphic information media products with high artistic quality and low price are available. As the mainstream of human information dissemination, the fundamental goal of contemporary printing is to solve major problems such as how to reduce the redundancy of time, how to reduce the redundancy of cost, how to reduce the redundancy of personnel, and how to expand new application fields, so as to realize personalized products and re value-added services of products in the whole process from manuscript (information source) to products
the key of contemporary printing - the main technical changes of replication technology focus on: (1) adopting modular structure and forming a standardized open system, so that the system can be standardized and expanded according to technical level, product type and personnel structure. (2) Using new color separation and addition technology, the quality of color separation is better, and the point shape, angle, number of lines, and number of points are richer. So as to ensure the quality of graphics and text in the whole process. (3) The full digital process of cip3/cip4 makes printing develop towards the full digital production process management based on Internet, realizes and meets the needs of personalization, on-demand printing, distribution and other modern social integration, and truly realizes the personalized goals of "data in, products out" and "on-demand content, on-demand design"
printing started from the transformation from traditional analog prepress technology to digital prepress technology in the early 1980s, and began to fundamentally change the technology, process and method of prepress preparation, prepress production, printing and post press processing of printing content. The internal cause of technological change is the creation of a page description language based on postscript/pdf/xml and the continuous optimization and improvement of its performance; The production and popularization of computers and software that can quickly and effectively process all kinds of complex words, graphics and images; The wide use of digital input and output equipment (such as scanners, laser imagesetters, CTPs) that can operate at the speed required by industrial production, with various imaging methods and reasonable prices, and the support of fully digital and cost-effective equipment for high-quality production requirements. So that printing on the digital platform, the extension continues to expand and the connotation continues to deepen
in recent years, China has successively established the Pearl River Delta packaging and printing base, the Yangtze River Delta packaging and printing base, the Bohai Bay Packaging and printing base and the Western packaging and printing belt. As many as 30000 enterprises are engaged in packaging and printing. It is estimated that the output value of China's packaging and printing industry in 2004 will reach about 100billion yuan, which fully shows the good development trend of China's packaging and printing industry. For the packaging and printing trend in China in 2005, taking North America as an example, I will only talk about my superficial views
first, traditional printing technology is still the mainstream
although there are nearly 30000 packaging and printing enterprises in China, the vast majority of these enterprises are small and medium-sized enterprises (the output value is less than 100 million yuan or only tens of millions of yuan). Due to the limitations of technology, equipment, capital, customer base and other factors of these enterprises, in addition, traditional printing has mature technology and experience, and they are very dependent on traditional printing
second, flexographic printing will have a great development
due to the low cost of flexographic printing equipment and less space occupation, it is convenient to make plates directly with CTP, and it is easy to carry out online operations such as glazing, hot stamping, indentation, die cutting, etc., which greatly saves the investment in supporting equipment. In addition, with water-based, UV ink printing and advanced servo drive technology, the printing quality has been guaranteed and improved due to the high print quality. Therefore, it has been adopted and favored by more and more users in the field of packaging and printing
Third, a variety of packaging and printing processes are combined to improve the quality of packaging and printing products
due to the expansion of China's foreign trade and the increasing improvement of people's lives, higher and higher requirements are put forward for packaging and printing products. In order to improve the quality of packaging and printing, in addition to selecting appropriate packaging and printing materials (such as gold, silver paperboard, aluminum foil, etc.), a variety of printing technology are combined and applied: such as offset + silk screen, gravure + silk screen, gravure + flexo + bronzing + concave convex + die-cutting, etc
in the combined packaging printing process, it is worth mentioning the development of sheet fed gravure printing. Compared with web gravure printing, sheet fed gravure printing is more suitable for medium and small batch product printing. Because sheet fed gravure printing is flexible, the maintenance time and product conversion time are short, In addition, German reprap said, "polyurethane is suitable for special utilization and silk screen printing, bronzing, concave convex, etc. Tel: +86 ⑵ 1 (6) 6761375 Fax: +86 ⑵ 1 (5) 1862486 process, which can improve the product quality to a higher level and achieve better economic benefits.
IV. green packaging, green materials
in the new year, the national environmental protection requirements for packaging will be more stringent, and" green packaging "will be required. The so-called "green packaging" refers to the packaging that is harmless to the ecological environment and human health, can be recycled and recycled, and can promote sustainable development. Therefore, the international community has determined that the packaging should comply with the "4r+1d" principle, that is, consumption, development of green materials, reuse, recycling and degradability. According to the current situation, the use range of aluminum transfer paper, water-based ink, water-based varnish and degradable materials will continue to increase to meet the environmental protection requirements of society