What is the main difference between screen printing mesh and other printing methods?
The main differences between screen printing mesh and other printing methods are as follows:
1 Printing adaptability The three printing methods of strong lithography, embossing and gravure printing can only be printed on a flat substrate. Screen printing can be printed not only on a flat surface, but also on substrates with curved, spherical and concave surfaces. On the other hand, screen printing can be printed not only on hard objects, but also on soft objects, without being limited by the texture of the substrate. In addition to this, in addition to direct printing, screen printing can also be printed by indirect printing method as needed, that is, 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.
2 The ink layer is thick, the stereoscopic effect is strong, the texture of the rich offset and embossed ink layer is generally 5 microns, the gravure is about 12 microns, the flexographic (aniline) printed ink layer is 10 microns thick, and the screen printing is 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 with an ink layer thickness of up to 1000 microns. The 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 with other printing methods. Screen printing can be performed not only in monochrome, but also in color registration and screen printing.
3 strong light resistance, bright color Because screen printing has the characteristics of missing printing, it can use a variety of inks and coatings, not only can use slurry, adhesive and various pigments, but also can use coarser pigments. In addition, the screen printing ink is simple to prepare, for example, the light-resistant pigment can be directly placed in the ink, which is another major feature of screen printing. Screen printing products have great advantages in light resistance. It has been shown by practice that the range of maximum density values measured after one embossing on the coated paper using black ink is 1.4, offset is 1.6, gravure is 1.8, and screen printing has a maximum density value range. Up to 2.0, the light resistance of screen printing products is stronger than that of other types of printing products, and it is more suitable for advertising and signage outdoors.
4 Large printing area At present, the printing area of general offset printing, embossing and other printing methods can be up to the full size of the sheet. If it exceeds the full sheet size, it is limited by mechanical equipment. Screen printing can be used for large-area printing. Today's screen printing products can reach a maximum of 3 meters x 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 the selection of printing methods, you can develop strengths and avoid weaknesses, highlight the advantages of screen printing, in order to achieve a more ideal printing effect.
Previous:What is screen printing mesh?