The difference between pad printing and screen printing The difference between pad printing and screen printing Pad printing is to transfer the image and text on the steel gravure (or photosensitive rubber gravure) to the substrate through a pad printing head cast with silicone rubber. It can be used for printing flat or various molded objects, such as glass products, plastic products, metal products, clocks and watches, and electronic and optical products. Its main feature is that it can print on irregular and special-shaped concave and convex surfaces. These printings are difficult or even impossible to complete using other printing methods, but they can be easily completed using pad printing, and can achieve multi-color exquisite printing. This is an ideal printing method for surface printing of instruments, equipment and some small products. Pad printing and screen printing have many similarities, such as wide adaptability to substrates; a wide variety of inks, pad printing inks and screen printing inks can basically be used universally; by replacing fixtures and printing plates, it is very convenient to complete the printing of different products. Therefore, in many printing occasions, pad printing and screen printing are as close as a pair of twin sisters, and they play an important role in special printing technology together. Because of this, many printing experts classify pad printing as a field of screen printing, without subdividing specialized pad printing technology and research institutions. However, there are still some differences in the characteristics and application techniques of pad printing and screen printing. First of all, from the perspective of the ink transfer process, pad printing and screen printing have obvious differences; the structures of pad printing machines and screen printing machines are also different; the types of products that pad printing technology is suitable for are also very different from those of screen printing. Objectively speaking, the differences between pad printing and screen printing are far greater than their similarities, and the reason why they are used to being bundled together is that pad printing and screen printing face a common market, and in this common market, screen printing cannot be separated from pad printing. It is difficult to separate pad printing from the screen printing industry, and there is no need to do so, but to have a deep understanding of pad printing technology, it is not enough to only look at it from the perspective of the screen printing industry. In summary, pad printing has the following main features: (1) Suitable for printing on curved surfaces. The elastic silicone rubber pad printing head can print on substrates with complex shapes such as quadratic and cubic curved surfaces, concave and convex surfaces, etc. (2) Can print finer graphics and texts, and can generally print fine lines of 0.05 mm; (3) Printing is stable and continuous. Even if printing is done for a long time, the printing accuracy will not change; (4) The drying process is omitted, and continuous multi-color printing is possible; (5) ...
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