The three printing methods of flat printing, embossing and gravure printing generally can only be printed on flat substrates. And screen printing can not only print on flat 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 on soft objects, without being limited by the texture of the substrate. In addition, in addition to direct printing, screen printing can also be printed by indirect printing as needed, that is, screen printing on gelatin or silicone plates, and then transfer to the substrate. Therefore, it can be said that screen printing is highly adaptable and has a wide range of applications.
The thickness of the ink layer for offset printing and embossing is generally 5 microns, the thickness of the ink layer for gravure printing is about 12 microns, the thickness of the ink layer for flexographic (flexographic) printing is 10 microns, and the thickness of the ink layer for screen printing far exceeds the above-mentioned ink. The thickness of the layer is generally about 30 microns. Thick screen printing for special printed circuit boards, the thickness of the ink layer can be up to 1000 microns. The braille is printed with foaming ink, and the thickness of the ink layer can reach 1300 microns after foaming. 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 can not only print in monochrome, but also can print in color and screen printing.
