Plastics can be marked or engraved with a CO2 laser marking machine for plastic products in a variety of ways. With a laser marker, you can mark many plastics, such as polycarbonate, ABS, polyamide, and many more with a permanent, quick, high-quality finish.
It is possible to permanently engrave almost any type of plastic using a laser marking machine for plastic, although the various raw materials, color pigments and additives (e.g. fillers, additives, flame retardants) react very differently.
In a laser marking machine for plastics, the fiber laser offers you a range of different methods, such as dyeing, carbonation or foaming. Since various plastics react very differently, you should always test a material sample.
Foaming leaves a tangible mark on the material. It can be seen as laser-induced boiling, which melts the surface. Due to the rapid cooling, bubbles are encapsulated in the material. These bubbles leave a positive mark, which is tangible. The laser marking machine for plastic works on a low power level and longer pulses. Foaming works on all polymers, but also on some metals. Carbonizing on the other hand enables strong contrasts on bright surfaces. During the carbonizing process the laser heats up the surface of the material (minimum 100℃) and oxygen, hydrogen or a combination of both gases is emitted. What’s left is a darkened area with higher carbon concentration.