uv laser with water cooling system marking PCB board industry

PCB board is a provider of electrical connections for electronic components. Almost every kind of electronic equipment, from electronic watches and calculators, to computers, communication electronic equipment, military weapon systems, as long as there are electronic components such as integrated circuits, must use PCB boards. With the rapid development of electronic products, faster and faster updates, and more and more product varieties and batches, it is becoming more and more difficult for merchants to manage products. In order to realize the management of PCB board production process and market circulation, it has become an inevitable trend to use laser marking two-dimensional codes, barcodes, and characters to trace information.

Traceability marks on PCB boards mainly include screen printing and laser marking. Let's see which one is more advantageous.

Although the initial investment cost of screen printing marking method is relatively low, the marking speed is fast. However, with the advancement of science and technology, the use of PCB boards with small sizes, high precision requirements and very close solder joint pitches has increased. The tilted-up screen can easily cause the PCB surface to form an instantaneous displacement and just printed pads. The shape connection or lack of solder causes the PCB to form virtual soldering, continuous soldering or lap soldering during soldering, which seriously affects the product quality and performance. Moreover, the mark is easy to fall off, easy to remove, easy to be tampered with, the mark is rough and unclear, pollutes the environment, and is harmful to the human body.

355nm UV laser high precision marking PCB board

PCB laser marking is a marking method that uses a high-energy density laser to locally irradiate the PCB board to vaporize the surface material or cause a chemical reaction of color change, thereby leaving a permanent mark. Compared with traditional printing technology, laser marking machine has a wide range of processing materials, safety and environmental protection; stable equipment performance, long service life; fine processing, strong wear resistance, high efficiency, simple operation, cost saving; character size can be from millimeters to The micron level is an irreplaceable anti-counterfeiting mark.

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Laser marking will be the development trend of the industry and will eventually replace screen printing

Although the initial investment cost is relatively high, with the rapid development of high and new technology, electronic products have high requirements for miniaturization, high integration, lightness, and ultra-precision. Traditional silk screen printing can no longer meet the requirements of technological development. Laser marking will be the development trend of the industry and will eventually replace silk screen printing.