1 Overview of Screen Printing
Screen printing technology is a great invention in China with a history of more than 2,000 years. As early as the Qin and Han Dynasties in ancient China, there was a method of printing with jie, and then in the Eastern Han Dynasty, the method of batik with jie has been widely spread, and the printing level has also been significantly improved. During the Sui Dynasty, people had a new exploration of the clip printing process, and began to use the frame stretched with silk screen for printing, which developed into screen printing. The exquisite costumes worn in the court of the Tang Dynasty were made of silk.
Printed by screen printing method. In the Song Dynasty, screen printing was further developed. Starch was added to the fuel for screen printing, so that the blooming colors were more gorgeous and rich. Today, screen printing technology is still developing and improving, and it has become an indispensable part of human life. It is not only a technology, but also a condensed cultural spirit and practical value, which promotes the development of human material civilization in the world.
The screen printing process is simple, the effect is fast, the printed product is rich in color, bright in color, texture, strong in three-dimensionality, and good in ink, and is deeply loved by the public. Secondly, screen printing has strong adaptability, and there is no limit to the size, shape or area of ​​the substrate. It can be printed on the surface of different substrates such as paper, fabric, metal, plastic, ceramic, glass, etc. Screen printing is also very adaptable to ink, water-based, oil-based, synthetic resin emulsion, and powder. With these distinct advantages and characteristics, it has become an indispensable printing method in the production links of various industries.

2 The difference between screen printing and letterpress printing, gravure printing, and lithographic printing
Modern society has entered the era of information technology, and the connection between industry and industry is closer, as is screen printing. In order to better combine screen printing and design, it is necessary to understand the correlation and difference between screen printing and other printing methods.
Letterpress, also known as “letter printing”, is one of the four major modern printing processes and one of the main printing processes. The principle is relatively simple, first engrave an image or text on the wooden board, then remove the non-text or image part, so that the image and text part can be highlighted, and finally apply ink, apply pressure on the paper, and the ink is transferred from the printing plate to the on paper. The main features of letterpress printing are thick ink layer, full color and rich layers. Gravure, also known as “gravure printing”, is a direct printing method. Fill the pits with ink, and then apply pressure to directly imprint on the substrate. The shade level of the printed picture is determined by the size and depth of the pits. The deeper the pits, the more ink content, and the imprint The ink layer left on the post substrate is Thicker; if the pits are shallower, the ink content is less, and the ink layer left on the substrate after embossing is thinner. The main features of gravure printing are delicate and thick, clear picture layers and bright colors. The disadvantage is that the plate making technology is too complicated and the cost is high.
Lithographic printing is also known as “chemical printing”. The graphic and non-graphical parts on the printing plate are on the same plane. The principle is to use the principle of “oil and water repellency” to achieve printing. Through the principle of mutual repulsion between oil and water, the graphic part is made oil-resistant and hydrophilic to discharge ink, and then pressure is applied to print on the substrate. The main features and advantages of lithographic printing are high speed and large output. Among the four printing technologies, lithographic printing
It is also the most competitive because it can be reproduced quickly, realizes high-volume works, and is also the most popular mainstream method. In general, the principles and characteristics of the four printing methods of letterpress printing, gravure printing, offset printing and screen printing are quite different Way.

3 The relationship between screen printing and visual communication design
Design refers to the purposeful and planned technical creation and creative activities. The ultimate purpose of visual communication design is to use visual symbols to spread information, express the designer’s ideas and ideas through the combination and arrangement of various visual elements, and use the three major elements of graphics, text, and color to create purposeful and planned use. Visual design that expresses the designer’s idea. The combination of visual communication design and screen printing can turn the design concept into reality through the printing process, effectively convey the information that the designer needs to convey, and finally realize the positive role of mass communication. At the same time, screen printing is currently the most adaptable and widely used printing method, which can facilitate the printing of different materials and materials, and better allow designers to express their design concepts. Its process equipment and operating principles are simple and easy to learn. The plate-making process in the early stage and the printing process in the later stage are easy to master, and it is not limited by the material of the substrate.
a broader platform. With the advent of the Internet era, the Internet has become the main medium for transmitting information. The Internet is flooding people’s lives with its powerful influence and driving force. Printing technology has also begun to be gradually affected, and the physical printing medium has gradually weakened. prints are becoming less and less. However, as the carrier of traditional design, screen printing still has irreplaceable charm and status, and its influence on graphic design cannot be underestimated. Whether it is a graphic designer or a designer in other fields, the completion of the final work depends on printing, so it is still the favorite way of expression for designers, and it is also a knowledge that must be mastered.

4 Application advantages of screen printing in visual communication design
The art of visual communication is an emerging artistic concept. It mainly conveys various kinds of information through visual symbols, and pays more attention to “information communication”. If the art form of visual communication is the same, it will be difficult to achieve the effect of information communication and communication. Screen printing is a way for designers to achieve technical beauty and express texture. The combination of visual communication design and screen printing can realize designers’ more innovative creative ideas and solutions, and bring more aesthetic visual enjoyment to the public. ,
Realize the unity of artistry and technology, and achieve better communication effect.
4.1 Realize the unified screen printing of technology and art in visual communication design, which can provide a variety of expression styles for visual communication design, creating unique and novel visual effects, not limited by the size and shape of the substrate, and the work has a strong three-dimensional sense , rich tones, strong color reproduction, strong printing adaptability, high flexibility, can comprehensively use various techniques and materials and other characteristics, provide unlimited possibilities for design, bring different visual impact and tactile texture, truly achieve The unity of technology and art injects more emotion and culture into the works, so as to meet the needs of the public.
4.2 Enrich the language of artistic expression and innovate the confidence of modern silk printing
With the integration of the world economy, the language of artistic expression is constantly expanding and evolving. In terms of form of expression, it is often used in the screen printing process to make or reproduce prints. It transforms visual design works from computer output to manual screen printing, which enhances the visual tension of the work and achieves a qualitative leap. It not only enriches the artistic expression of the screen printing process, but also enhances the visual effect of the design works. Art requires continuous exploration and discovery of new design concepts to create unique and excellent works. Using advanced technical means and modern aesthetic concepts to examine art, extract the essence, and then combine the current inheritance and development to create screen printing works with Chinese local artistic characteristics and modern aesthetic value.

4.3 Application of innovative materials to highlight visual tension
One of the reasons why screen printing technology is so widely used is the wide range of materials used, such as paper, textiles, wood, metal, glass, plastic, leather, stone, etc. These rich and diverse materials bring more opportunities to the realization of designs. There are many possibilities, and it can show artistic effects that other printing methods cannot achieve. Secondly, the versatility of screen printing and the ability to reproduce vivid colors and clear images, used to express text and lines, or monochrome and color registration, can produce bright colors and rich textures. Through different materials of paper, it can show its uniform color, gradient, beauty and printing texture, so as to achieve high-quality printing texture, so that the color and luster on the surface of the paper can give a satisfying touch and pleasure. With a brand-new visual experience, the works are full of brilliance and vitality, forming a new visual form of silk-screen works. To sum up, screen printing has great unique advantages, and its process method, expression form and material application have advantages that other printing forms cannot match. It is precisely because of its flexibility and wide adaptability that many design works even use screen printing instead of offset printing in the printed matter using paper as the printing carrier, so as to express creative design ideas more vividly. How to create more perfect, novel and unique works of art, there are still many problems to be explored.

5 Conclusion
The purpose of visual communication design is to convey information, how to better use the three visual elements of text, graphics, and color to express design ideas, so that the audience can feel the hidden meaning behind the designer. As the most suitable medium for realizing the diversity of visual communication design styles, screen printing presents the design concept as an entity through printing, and shows the form and connotation well. Its technicality reflects the modernity and artistry far more than other printing. technology. With the rapid development of economic globalization today, art can make people feel the meaning of graphics in different countries and regions across the barriers of language and race. This visual language itself has surpassed the emotional expression in text language and body language, making Communication becomes faster. The combination of screen printing and visual communication design is a hot phenomenon at the moment. The screen printing process and visual art design are closely combined, so that the formal beauty of screen printing and the art form of visual design are more perfectly combined. Designers are required to fully participate in the printing process, and master the technical characteristics and technical characteristics of the screen printing process. Artistic characteristics, give full play to the strengths of screen printing and highlight its advantages, in order to continuously create screen printing graphic design works with individuality and shock. Screen printing is an ancient and young technical means. In the future artistic creation, it will not only stay on the surface of exploring the design expression, but also the understanding and comprehension of cultural concepts.
is an important topic for the future.