Pay attention to invisible screen printing in the

The electronic age pays attention to invisible silk printing

traditional silk printing mainly prints some visible products, such as T-shirts, retail stalls, billboards, etc. However, there are many invisible applications in silk printing, which are unique in silk printing. In the industrial market, people are used to seeing printing as coating, that is, coating a special medium on products, whose main function is to produce sealing or connection; Improve or protect the surface of objects; electric conduction. Silk printing technology is widely used in the electronic industry. Although most silk printing in the electronic industry is invisible, it has a very important impact on our daily life

membrane switch

as we all know, the switch plays a role in transmitting command information in electronic machine products. There are many kinds of switches, and their carbon materials include graphene, fullerene, carbon nanotubes and carbon fibers. The development of industrial systems continues to update with the progress of electronic machine products. In the 1950s, the toggle switch, toggle switch and transfer switch of endeavour components dominated; In the 1960s, the combination switch represented by the keyboard switch appeared to complete simple function conversion; With the expansion of application fields and the increase of machine functions, conductive rubber keyboard switches appeared in the 1970s, and membrane switches are a new type of electronic devices researched and developed in the late 1970s and early 1980s. They are products that meet the needs of the development of electronic machine products to miniaturization, digitization, intelligence and multifunction

membrane switch is a kind of contact switch made by printing contact circuit with conductive paste on flexible polycarbonate or polyester film. The contact of the switch is vertical contact, and the wear is very small; The contact printed with silk can form a sufficient thickness, and a layer of conductive carbon is printed on the silver paste contact to achieve the purpose of high wear resistance and self lubrication. Therefore, the service life of the membrane switch is more than ten times that of the mechanical contact switch

electronic labels

at present, about 40 billion bar codes are printed every day in the world, about 1% of which are printed with electronic labels, which is a huge market demand for the printing industry. According to incomplete statistics, the global RFID tag market reached US $4billion in 2004 and exceeded US $7billion in 2006. Experts predict that it will reach US $300billion in 2010. The increase in the market share of electronic labels has greatly reduced the production cost of electronic labels, especially after the use of printing conductive ink and advanced printing technology and packaging technology, it has also reduced the cost of RFID smart labels

in the electronic label printing process, wire printing is still the most suitable way to print the electronic label antenna at present because of its high efficiency, flexible production, strong reliability and other characteristics. The adoption of wire printing can improve the stability and precision of the imprint, and has a good effect for printing conductive silver paste. It can distinguish 0.1mm circuit line spacing, and has high positioning accuracy

notebook computer motherboard

the manufacturing process of a notebook computer mainly includes three processes: notebook motherboard manufacturing (actual assembly), assembly (motherboard, hard disk and other accessories installation), and the whole machine is an instrument test and inspection to detect the impact resistance of metal materials under dynamic load. The manufacturing process of the motherboard is closely related to our silk printing

the manufacturing of notebook motherboard includes several sub processes, such as silk screen printing, patch, reflow, full inspection, etc. among them, after each or two processes, AOI equipment is used to detect the quality of the motherboard, and the bad conditions are solved in time, so as to form a closed-loop system to monitor the quality of notebook motherboard in the whole process. Generally speaking, there are components on both sides of the notebook motherboard. Therefore, in the actual manufacturing process, more than two processes are required

the first step in manufacturing is silk screen printing, which refers to missing solder paste on the PCB pad to prepare for the installation of components. When missing solder paste, components can be welded and become the material, knowledge and technical foundation for the further development of waterproof experimental box. After silk screen printing, it will be tested to ensure the yield. After the silk screen printing, enter the SMT patch process. Its main function is to paste the components such as resistance, capacitance, IC (integrated chip) and connector on the PCB through the mounter