The PCB board is one of the most important components in the contemporary electronic component industry, which is almost applied to the vast number of electronic products. As the quality requirements of PCB boards are increasing, in order to better achieve quality information control of production products, marker characters, barcodes, QR code and other information traceability systems should be delivered in the PCB board. Currently, the logo processing of the PCB mainly has two ways of silk screen and laser marking.
Traditional silk printing, uses the fabricated graphics mesh, using external pressure to pass the character ink from the part of the mesh, and leaked on the surface of the board. The remainder of the net on the screen version will be blocked, and the ink is formed only in the surface of the board, and the ink under the surface is formed, and the ink, which is text, identification, pattern, etc. This method of processing, the price is relatively inexpensive, the processing speed is faster, but there is a lack of labeling effect, the logo is easy to take off, and the PCB plate that is not marked with a small pcb board, the chemical raw material has a certain toxicity.
The laser marking is a laser using a high energy density to partially illuminate the PCB board, so that the surface material is vaporized or discolored, thereby leaving a permanent marker. This non-contact processing can record a very clear QR code in a very small web mark, which guarantees high precision while ensuring high quality, and does not wear due to high and low temperature, acid and alkaline changes and external friction. There is no need for chemical substance assistance, and there is no negative effect on people’s safety and environment.
PCB’s special laser marking machine is put into use, with its precision and flexibility, can make up for the shortcomings of silk printing, greatly increase production efficiency and good product rate, reduce cost, and reduce pollution. Laser marking is gradually become the best way of PCB tags, in many areas such as digital products, wearable devices, and automotive circuit boards have been widely used.
(This article is organized by machinery and equipment, the reprint must be indicated: www.szcy99.com, please respect the results of labor, copyright infringement)