As one of the most important components in the electronic industry, PCB board is applied to almost all electronic products and is called "the mother of electronic system". With the increasing quality needs of PCB boards, in order to better realize the quality information management and control of products in production, traceability systems such as marking characters, barcodes and QR codes on PCB boards have emerged.
At present, PCB board marking processing mainly has two methods: silk printing and laser marking
The traditional silk printing processing uses a well-made graphic to transmit the character ink from a part of the mesh and leaks on the surface of the board by external pressure. The rest of the mesh will be blocked, not through the ink, only blank on the surface of the board, the ink under the leak will form the text, logo, pattern and so on. This kind of processing method is relatively cheap and fast, but there are shortcomings such as rough marking effect, easy to fall off the logo, unable to mark the small PCB board and toxicity of chemical raw materials.
Laser marking engraving machine
uses a high-energy-density laser to locally illuminate the PCB, causing the surface material to vaporize or discolor, leaving a permanent mark. This marking processing can mark very clear two-dimensional codes, ensuring high precision and high quality without high or low temperature, acid or alkali changes. No chemical materials is required, and there is no negative effect on safety and environment.
The laser marking machine for PCB
can compensate for the shortcomings of silk processing with precision and flexibility, greatly improving production efficiency , reducing costs and pollution. Laser marking is becoming the best way to mark PCBs, and has been widely used in many fields such as digital products, wearable devices, and automotive circuit boards.