Screen printing is a main printing method in stencil printing.
Screen printing is based on the original manuscript, selecting the plate making method and printing process and determining the printing materials to be used. Because screen printing has a wide range of uses, there are many types of corresponding processes. It is very important to choose which process to choose. There are also various materials used in each process. The choice of which material to use depends on the nature of the pattern, the amount of reproduction, and the purpose of the product. There are two methods of plate making: engraving plate making and photosensitive plate making. The former is suitable for patterns that are not very precise and can be drawn; for prints that require higher precision and emphasize tonal gradation, photosensitive platemaking must be used.
For prints with a small number of prints and low quality requirements, it is most convenient to use manual printing. If the demand is large and a certain quality is required, a high-precision fully automatic printing machine is required. Because the materials, quality and shapes of screen printing vary widely, there are many types of printing machines. The ink used for screen printing has different adhesion properties due to the different texture of the printing material, so it is necessary to select the appropriate ink in a targeted manner. In addition, due to the different uses of the product, if necessary, electrical conductivity, corrosion resistance and so on. So the ink used is also different. Because the drying methods of various inks are different, pay attention to selecting the corresponding drying method when using them.
The screen printing process includes the whole process from the original design to the production of the screen plate, the selection of specific inks, and the printing of the substrate on the screen printing machine through the handle. According to the characteristics of the screen printing process, the screen frames, ink, squeegee, substrate and printing device are generally referred to as the basic elements of screen printing. Screen printing is the key to realistic screen printing. The production of silk screen plates involves a series of variables such as silk screen, screen frame and stretch screen for plate making and plate making.
Screen printing ink is the most important material in screen printing. Since the objects of screen printing are quite extensive, and the types of screen printing inks are quite numerous, it is an indispensable condition for smooth screen printing to correctly grasp the performance of screen printing inks.
Screen printing squeegee is an important medium to complete screen printing. Understanding the characteristics of screen printing squeegee is of great significance to improve the quality of printed parts.
Substrate is an important element in screen printing elements. The diversification of substrate objects is the distinguishing feature of screen printing that is different from other printing methods. Different substrates and different printing requirements determine and constrain other essential elements.
The printing device generally refers to various types of screen printing machines and printing devices, and it is an indispensable and important tool for real screen printing.
The process of screen printing is complex and varied. How to choose the most appropriate method among many methods requires a wealth of technical knowledge. It can be imagined that the application range of screen printing in the future will be more extensive and more diversified. With the further innovation of machines and materials, more, newer, better quality and more characteristic products will be produced.