Advantages of laser marking on PCB

PCB is one of the most important components in electronic component products, which is called "the mother of electronic system products". Moreover, the production requirements of PCB are very strict, and no mistakes are allowed. The laser marking machine has become an indispensable part of the industrial production process, and the application field is also constantly making breakthroughs and improvements. The laser marking machine topsunlaser.com has high accuracy and flexible operation, which can make up for some deficiencies in traditional processing. Now let's follow Suntech Laser to understand the advantages of laser marking on PCB.

PCB laser carving

Screen printing marking method The processing process of screen printing is to use the prepared graphic screen plate to make the character ink pass through some of the screen holes and miss printing on the surface of the circuit board under the pressure, while the rest of the screen holes will be blocked and cannot pass through the ink. Only a blank will be formed on the surface of the circuit board to form characters, logos and patterns.

Disadvantages of traditional silk screen printing:
1. Easy to fall off: The ink on the PCB surface is easy to fall off and fade due to friction during use, resulting in blurred characters.

2. Easy to remove: Characters on the surface of PCB can be removed directly through hydrochloric acid or cyclohexanone and other solutions, which is easy to cause information tampering. Consumables: screen printing needs to constantly consume ink and other auxiliary materials.

3. Rough information: screen printing can only be marked on PCB boards with large format, and the font is rough and unclear. Environmental pollution: Chemical raw materials such as organic solvents and heavy metals used in the printing process have certain toxicity, which will cause personal injury to workers, air and environment pollution.

Advantages of laser marking on PCB:
Laser marking marking Laser marking machine is a marking method that uses high-energy density laser to irradiate PCB locally, so as to vaporize the surface material or produce chemical reaction of color change, thus leaving a permanent marking. Laser marking can print various characters, symbols and patterns, and the character size can be from mm to micrometer, which is of special significance to the anti-counterfeiting of products. The advantages of the laser marking machine are as follows:

1. Anti damage: use laser to directly etch words and symbols on the surface of materials, which is durable and can resist damage.

2. The laser marking machine is easy to operate: as long as the graphics are designed on the computer, the graphics can be presented in an instant.

3. The laser marking machine has clear marks: the laser processing precision is high, the light spot is fine, the fine marking can be realized, and the pattern is clear and beautiful.

4. Material saving: "non-contact" processing will not damage the workpiece and materials, saving material costs. Environmental protection: only a small amount of gas is produced and discharged through ventilation, without the assistance of chemical substances, so as to protect the working environment of operators as much as possible. Low operation cost: laser marking only consumes a small amount of electricity, without ink and other auxiliary materials.

Source: Shangtuo Laser