Application of the most popular embossing technolo

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Application of concave convex embossing technology in packaging and decoration

concave convex embossing technology is one of the important means of surface art processing of packaging and decoration prints, which has attracted more and more attention

I. The Application of concave convex embossing technology in packaging and decoration

printing is completed by mechanical embossing after the printing plate is coated with an appropriate amount of ink. The printing surface completed by this method can only be planar, and it is impossible to produce three-dimensional convex surfaces. Concave convex embossing technology can produce three-dimensional hierarchical convex surface on unprinted white paper or printed paper, which has a special artistic effect

The concave convex embossing process is another derivative creation after the invention of printing in ancient China. It is a comprehensive process combining printing technology and carving art. Copper engraving concave convex embossing process is the transplantation and application of relief (plane carving) art in the printing process. Without the development of printing technology and relief art, there can be no development of concave convex embossing

the basic feature of relief art is that the pattern created on a plane with a small area and thickness is required to achieve:

1 The level is clear, and the richer the expression, the better

2. The three-dimensional image is condensed, and the tighter the expression, the better

3. The perspective angle is accurate, and the more realistic the expression is, the better

the basic characteristics of relief can be fully expressed through the concave convex embossing process. The main substrate of concave convex embossing is paper. Generally, the thickness of paper that can withstand concave convex embossing is only a few tenths of a millimeter to about 1 millimeter. To create rich and colorful convex patterns within this thickness range, its complexity is conceivable

The application and development of concave convex embossing technology in China, which is not only an indispensable basic production link for a large number of industrial and agricultural products, began in the 1920s, and gradually formed an independent process system in our country. After the founding of the people's Republic of China, especially with the development of commodity economy, it has been more widely used

the decorative function of concave convex imprinting on the surface of paper packaging is as follows:

1 Make three-dimensional modeling patterns and words to increase the artistic effect of decoration

2. Improve the grade of commodities and add added value

3. Advanced fine concave convex shape is difficult to imitate and has considerable anti-counterfeiting effect

Second, carry forward the characteristics of China's packaging and decoration concave convex embossing process

the use of China's electronic universal experimental machine has gradually become more widespread. China is the country where engraving copper plates were first used. As early as 1000 years ago, engraving copper plates were used in the Song Dynasty. China is also one of the countries with the highest level and the most used concave convex embossing technology of modern engraving copper plate

the main features of concave convex embossing process in China are as follows:

1 The composition design is scientific and reasonable. Fully consider the overall pattern structure, from popular plastic to environmental protection materials to highlight the main part. Craft designers have good plastic arts skills and can design good artistic effects

2. Printing and embossing process are tight. First of all, we should consider whether the installation of the main part of the experimental machine is a vertical close combination. The two complement each other. Printing creates good conditions for embossing, and embossing makes up for printing deficiencies

3. The carving process is fine, and it is created according to the principle of relief art. It pays attention to the cross combination of perspective and the main level of different blocks, and the three-dimensional effect of embossed paper can be considered in the details

4. According to the characteristics of different products and papers, overprint and pressure adjustment are carried out for concave convex embossing, so that the concave convex layers are rich and the sense of subjectivity is strong

in order to further carry forward the characteristics of China's concave convex embossing process, a lot of work needs to be done in the future:

1 Continue to carry forward the fine tradition of concave convex embossing technology in China. With the increasingly fierce competition in the market economy, increasing the added value of goods is still an important way of competition, and there is still a broad world for the application of concave convex embossing in packaging and decoration. Some people believe that today is the electronic information age, and the traditional technology can be replaced. This is a misunderstanding. Although it is said that modern means should be actively adopted, they can not be used everywhere. In traditional crafts, there are priceless treasures that will last forever, and there are parts that have lost value and need to be eliminated, which should be distinguished. Concave convex embossing is a kind of technology. As long as new content is constantly enriched, it will be brilliant forever

2. Business operators and decorators combine to constantly develop new products. In the market competition, we often win by quality and establish the enterprise image by fist products. Making full use of the combination of printing and embossing technology to design and develop new products for product users is conducive to the mutual benefit between printing enterprises and product users, and is conducive to the continuous innovation of embossing technology. Therefore, business operators and designers engaged in packaging and decoration must constantly improve their own business level, and relevant experts can be invited to give lectures and guidance, so as to continuously develop and innovate

3. Make great efforts to cultivate professional and technical talents of carving concave convex copper plate. Concave convex copper plates are usually made by etching and engraving. Among them, the etching method can only obtain simple and non hierarchical impressions for low-grade prints, while the engraving method can obtain hierarchical three-dimensional impressions. It is difficult to cultivate such skilled talents. They should not only have a solid foundation in art and sculpture, but also be familiar with the printing process. In the 20 years after the founding of the people's Republic of China, there were dozens of such talents in Shanghai, who had a high level and created hundreds of excellent works. Nowadays, there are few such talents left, and there are no successors. It is difficult to see high-quality products. Therefore, we must step up training, preferably graduating from colleges and universities, practicing in printing factories for a long time, and becoming qualified talents through our own efforts

4. Continuously improve the concave convex embossing process. Embossing on the surface of paper is a comprehensive process, which needs to deal with the problems of composite model and mechanical pressure. The composite model is to carve the concave surface of copper plate first, and then make the composite convex model. It requires very precision, so that the three-dimensional convex layer can be displayed on the paper surface by pressing. In long-term practice, copper, zinc, plastic and other materials have been tried to make composite convex models. This process has a poor degree of precision and is only suitable for simple prints. The convex model of fine prints is made of on-site gypsum, which is difficult in technology and needs continuous improvement and innovation. In addition, we should strengthen the research on stamping machinery with appropriate pressure and high flatness, precision and automation

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