Traditional screen printing is screen printing cloth, synthetic fabrics or metal screen taut on the screen frame, the use of hand engraved lacquer film or photochemical plate making methods to produce screen printing plates. Modern screen printing technology has improved, the use of photographic materials to take photographic plate making method of screen printing plate, in the printing, through the squeegee extrusion of the ink through the graphics part of the mesh transfer to the substrate, the formation of the same graphics as the original. In order to adapt to the increasingly fierce market competition, to meet more and higher customer requirements, screen printing technology has been rapidly improved and enhanced in recent decades, compared with other printing methods mainly presents the following five characteristics.
1.Applicable to various types of inks
Screen printing can use a wide range of inks, including pastes, pastes, paints, adhesives, and solid powders, beyond the usual definition of ink. Therefore, screen printing inks are sometimes referred to as “printing materials”. In addition, compared to other printing methods, screen printing is not very demanding on the fineness of the pigment particles in the ink, as long as the ink and coating can pass through the screen mesh fineness can be used.
2.Good outdoor performance
Since screen printing has a wide range of inks, it is possible to use inks with light-resistant pigments or fluorescent pigments, so that the printed image is not affected by the temperature and sunlight and maintains its luster, and can even glow at night. This feature determines that screen printed products can be used outdoors for advertising and signage.
3.Not subject to enterprise restrictions
Screen printing, like lithography, letterpress and gravure printing, can be produced on an industrial scale. At the same time, it also has the other three printing methods incomparable ease of plate making, cheap, flexible and diverse printing methods, easy to grasp the technical characteristics, so it can not be restricted by the size of the enterprise, even if the individual operation is also feasible.
4.Wide range of printing
Screen printing has great flexibility and wide applicability. With screen printing, printing can be done on flat surfaces, on substrates with special shapes, and even on concave and convex surfaces. In addition, screen printing has a wide printing area, which can be printed on large areas, up to 3m x 4m or more, and on ultra-small, ultra-precise items. Because the screen printing plate is soft and flexible, the printing pressure is low, so if you need to print on soft substrates such as textiles, as well as a variety of glass and ceramic vessels that are easily damaged by pressure, you can choose screen printing.
5.Wide range of adjustable ink layers
Screen printing is actually quite a wide range of applications, as many people jokingly say, in addition to air and water can not be printed, it can be printed on a variety of materials and surface shapes of different substrates. Its substrates include paper, plastic, wood products, metal products, glass, ceramics, signs, textiles, leather products, CDs, magnetic cards, etc.. What has attracted attention in recent years is perhaps its application in the high-tech electronics industry.