PCB laser marking machine and comparison of the advantages and disadvantages of silk screen printing

PCB laser marking machine and comparison of the advantages and disadvantages of silk screen printing? PCB board, is in short circuit boards. PCB as contemporary electronic components industry is one of the most active in the industry, almost all of the electronic products will be used, such as mobile phones, computers, multimeter and other electronic products. As PCB product varieties and batch increasingly complex, merchants in product management increasingly difficult. To achieve the quality control in the process of PCB production, markup characters on the PCB board, bar code and qr code information for traceability, become the development trend of industry.



the traceability label on the PCB processing, mainly include the silk screen printing and PCB laser marking machine and screen printing compared the advantages and disadvantages in two ways. So, both have what disadvantages?

screen printing way tag

use making good graphics screen, under pressure to make character ink through on part of the screen mesh, and bearing in the circuit board surface. The rest on the screen mesh will be blocked, not through the ink, only form blank in the circuit board surface, forming a text, logo, design, etc.

advantage: the price is relatively cheap, fast tag

disadvantages:

easy to fall off, ink on the surface of the PCB in the process of using loss due to friction, rub off easily, cause character is only a blur.
easy removal: by hydrochloric acid and cyclohexanone solution can remove the PCB directly on the surface of the characters, easy to cause information to tamper with.
tag is rough: silk screen printing can tag on the wide large PCB board, and bold font is not clear.
environmental pollution: organic solvent used in the printing process and the heavy metals and other chemical raw materials, has a certain toxicity, can cause injury to personnel and the air and environment pollution.

laser marking way tag

PCB laser marking machine is the use of high energy density of laser to local irradiation of PCB, the surface material vaporization or change the color of chemical reaction, so as to leave a permanent mark of a marking method. Laser marking can play all kinds of characters, symbols and motifs, characters can from mm to micron size, the product security has special significance. Advantages:


damage resistance: using laser direct etching in the material surface characters, symbols, and permanent, can resist damage.
the operation is simple, as long as the design on the computer graphics, can let the graphics presented in an instant.
tag is clear: laser machining high precision, light thin, can achieve fine marking, clear and beautiful patterns.
save material: & other; No contact & throughout; Processing and no damage to the workpiece, without damaging the material, saves the cost of materials.
security environmental protection: the laser marking does not produce harmful gases, can protect the operator's safety and work environment.
weakness: the upfront costs are relatively high,

with the rapid development of electronic products manufacturing technology, portable electronic products increasingly toward miniaturization, high integration, light direction. Along with the development of packaging technology, welding plate and spacing are getting smaller, the counterpoint printing is also becoming more difficult. And PCB laser marking machine, with its precision and flexibility, can make up for the silk screen printing is easy to fall off, the machining accuracy is not high technical shortcomings, will play an important role in the PCB industry.