What is screen printing?
The screen printing belongs to the porous printing, which is called four printing methods together with lithoprinting, letterpress printing and gravure printing.The common tools of screen printing are screen printing mesh,including polyester screen mesh and stainless steel printing mesh. Porous printing includes copying, engraving, embossing and screen printing. The principle of porous printing is as following, printing plate (paper film version or other version of the version made by ink on the base of perforation), when printed by certain pressure to make ink through hole version of perforation transferred to substrates (paper, ceramic, etc.), to form the image or text. The stencil printing was the easiest porous printing, starting in the late 19th century. This kind of printing is made on special wax paper, which can be printed by ink roller on the wax paper version through typewriter or iron pen. In porous printing, the most widely used is screen printing. Screen printing is the use of silk fabrics, synthetic fiber fabrics or wire mesh tension on the screen frame, the use of hand-carved lacquer film or photochemical plate printing screen. Modern screen printing technology, is to use photographic materials produced by the method of camera system version screen plate (make the silk screen plate on the graphic part of the screen hole to hole, rather than the graphic part of the screen hole is blocked). When printing, the ink is transferred to the substrate through the screen hole of the part of the picture and text, forming the same picture and text as the original manuscript. Screen printing equipment simple, easy to operate, printing, plate making simple, low cost, strong adaptability. Screen printing applis to a wide range of common printing: color oil painting, posters, business CARDS, binding cover, commodity signs and printing and dyeing textiles.
What are the main features of screen printing? The characteristics of screen printing can be summarized in the following aspects: Screen printing can use a variety of types of ink.which are oil, water, synthetic resin emulsion, powder and other types of ink. The layout is soft.Silk-screen printing plate is soft and flexible, not only suitable for printing on soft materials such as paper and cloth, but also suitable for printing on hard materials, such as glass, ceramics and so on. Screen printing pressure is small. Due to the low pressure used in printing, it is also suitable for printing on the fragile bb0 body. The ink layer is thick and strong. Not limited by the surface shape of the substrate and the size of the area. As can be seen from the foregoing, screen printing can be printed not only on the plane, but also on the surface or the sphere;It is suitable for printing not only on small objects, but also on large ones This type of printing has great flexibility and wide applicability.
How many screen printing methods are there? There are usually two kinds of screen printing, manual printing and mechanical printing.Manual printing is to point to from the continuation of the paper to the paper, printing plate up, down movement, scraper scraping printing are manual operation. Mechanical printing means that the printing process is completed by mechanical action. It is divided into semi - automatic printing and semi - automatic printing.Fully automatic means that the whole printing process is completed by machinery.