Make plastic crystal clear! Application of Ultraviolet Nanosecond Laser in Translucent Engraving

When the brightness is low or dark, the pointers, scales, and switch knobs on the car dashboard, or graphics or numbers on plastic parts such as mouse keyboards and switch panels suddenly appear crystal clear and transmit signals clearly and accurately. information.

The question is: how do they shine? Or, how does the light from the backlight pass through the plastic?

In fact, the laser radium engraving process is used here. The principle is: a high-energy density beam irradiates the surface of the plastic part, quickly removes a thin layer of coating material on the surface, and finally forms a specific graphic picture or text. Irradiation achieves the effect of light transmission.

uv laser | green laser | Ultraviolet lasers | uv dpss laser | nanosecond laser | UV laser source | Solid State Lasers

Compared with traditional ink jet coding technology, there are obvious advantages to using rfh nanosecond solid-state laser.

The pulse width is less than 20ns@50kHz, and the action time is very short, so that the heat conduction has no time to diffuse to the surrounding materials, and the heat affected zone is small, which greatly improves the processing accuracy;

The 355nm ultraviolet laser has high energy density, and it swipes quickly on the surface of the material, directly breaking the chemical bonds of the material, and the surface coating evaporates rapidly with each pulse, leaving etching traces, thus creating a void on the surface that can be noticed by the naked eye and touch. The cavity is then transmitted to our field of vision through backlight illumination, showing the desired etched graphics, text or other marks;

In terms of processing efficiency and processing quality, the excellent beam quality (M2 < 1.2) has small focusing spot, fast speed, concentrated energy, very small deformation of the material, good surface finish, can achieve fine processing effect, and clear text and pattern information lasting;

No need to develop molds, it can be programmed and set according to needs, shortening the product development cycle and reducing costs.

If compared with the screen printing process, if you do not observe carefully, the products processed by the two are relatively similar in appearance, but there are substantial differences in reality. The wear resistance of laser engraving is stronger than that of silk screen printing. In addition, silk screen printing uses physical principles, the cost of ink is relatively high, and it is harmful to the environment. Efficiency and stability, environmental protection and other aspects have greater advantages.