Printing knowledge: What are the main differences between screen printing and other printing methods?
①The printing adaptability is strong. The three printing methods of flat printing, embossing and gravure printing can usually only be printed on the substrates with parallel planes. Screen printing can not only print on parallel surfaces, but also print on curved, spherical and concave-convex substrates. On the other hand, screen printing can not only print on hard objects, but also print on soft objects, which is not limited by the texture of the substrate. In addition, in addition to direct printing, screen printing can also be printed by indirect printing methods as needed, that is, screen printing on gelatin or silicone plate first, and then transfer to the substrate. Therefore, it can be said that screen printing has a strong adaptability and is widely used.

② Thick ink layer, strong three-dimensional effect, rich texture The ink layer thickness of offset printing and letterpress printing is usually 5 microns, gravure printing is about 12 microns, and flexographic (flexographic) printing ink layer thickness is 10 microns, while screen printing ink layer thickness is 10 microns. The thickness of the ink layer is far beyond the thickness of the ink layer, and usually can reach about 30 microns. Thick screen printing specially used for printed circuit boards, the thickness of the ink layer can be as thin as 1000 microns. Braille is printed with foam printing ink, and the thickness of the ink layer after foaming can reach 300 microns. The screen printing ink layer is thick, the printing quality is rich, and the three-dimensional effect is strong, which is incomparable with other printing methods. Screen printing is not only capable of monochrome printing, but also can do color registration and screen color printing.

③ Strong light resistance and bright color Because screen printing has the characteristics of missing printing, it can be applied to a variety of printing inks and coatings, not only pastes, adhesives and various pigments, but also can be applied Coarse particle pigments. In addition, the screen printing ink formulation method is simple, for example, the light-fast pigment can be directly put into the printing ink for formulation, which is another feature of screen printing. Screen printing products have the great advantage of strong light resistance. According to the practical activities, it is compared according to the maximum density value measured after applying black ink on the coated paper. The offset printing is 1.4, the embossing is 1.6, the gravure printing is 1.8, and the screen printing is the largest. The density value standard can reach 2.0, so the light resistance of screen printing products is stronger than that of other types of printing products, and it is more suitable for outdoor advertising and signage.

④Large printing area At this stage, the largest area printed by offset printing, letterpress printing and other printing methods is the full sheet size. If it exceeds the full sheet size, it will face the limitation of mechanical equipment. And screen printing can do a large area of ​​printing, and now the maximum size of screen printing products can reach 3 meters × 4 meters, or even larger.

In summary, the above four points are the differences between screen printing and other printing, and at the same time are also the characteristics and advantages of screen printing. Knowing the characteristics of screen printing, in choosing the printing method, you can learn from each other and highlight the advantages of screen printing, so as to achieve a more ideal printing effect.