Compared with other printing methods, screen printing has the following main differences:
â‘ Strong printing adaptability The three major printing methods of flat printing, embossing and gravure printing can generally only be printed on flat substrates. The screen printing can not only print on the plane, but also print on the curved surface, spherical surface and uneven surface of the substrate. On the other hand, screen printing can not only print on hard objects, but also print 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 methods as needed, that is, first screen printing on gelatin or silicone plate, and then transferred to the substrate. Therefore, it can be said that screen printing is highly adaptable and has a wide range of applications.
â‘¡The ink layer is thick, strong three-dimensional, rich texture. The thickness of the ink layer for offset and relief printing is generally 5 microns, the gravure printing is about 12 microns, the thickness of the ink layer for flexographic (aniline) printing is 10 microns, and the screen printing The thickness of the ink layer far exceeds the thickness of the above ink layer, generally up to about 30 microns. Thick screen printing for printed circuit boards, the thickness of the ink layer can be up to 1000 microns. Braille dots are printed with foaming 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 feeling is strong, which is incomparable to other printing methods. Screen printing can not only print in monochrome, but also register and screen color printing.
â‘¢ Strong light resistance and bright color. Because screen printing has the characteristics of missing printing, it can use a variety of inks and coatings, not only can use paste, adhesives and various pigments, but also can use pigments with coarse particles. In addition, the screen printing ink preparation method is simple, for example, the light-resistant pigment can be directly placed in the ink preparation, which is another major feature of screen printing. Screen printing products have the great advantage of being lightfast. Practice has shown that the comparison of the maximum density value range after black stamping on coated paper using offset printing is 1.4 for offset printing, 1.6 for relief printing, and 1.8 for gravure printing, while the maximum density value for screen printing can be Up to 2.0, so the light resistance of screen printed products is stronger than other types of printed products, and it is more suitable for outdoor advertising and signage.
â‘£The printing area is large. At present, the size of the area printed by general offset printing, relief printing and other printing methods is the maximum full sheet size, and if it exceeds the full sheet size, it is limited by mechanical equipment. While screen printing can be used for large-area printing, today's screen printing products can reach a maximum of 3 meters by 4 meters, or even larger.
The above four points are the difference between screen printing and other printing, and also the characteristics and advantages of screen printing. Understand the characteristics of screen printing, in selecting the printing method, you can avoid weaknesses, highlight the advantages of screen printing, in order to achieve a more ideal printing effect.
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