With such a broad range of plastic materials used for industrial purposes - from soda bottles to eyeglass frames - the opportunities for laser marking plastic are endless.
Trotec offers a range of laser solutions for marking plastic, offering CO2 laser technology as well as Nd:YAG laser marking systems.
CO2 laser marking removes material directly from the plastic to offer an engraved look, which can be used to achieve a colored effect, particularly when using 2-ply plastics. When using 1-ply materials, laser marking creates a "relief" effect, which is a good choice for cases in which the marking is meant to be subtle, yet still clearly visible.
In some cases, colored polymers can be high-contrast marked with a CO2 laser. Many polymers and additives for polymers designed for CO2 laser marking are commercially available
. CO2 solutions
Nd:Yag laser solutions are specifically used to create a color change without removing material. Depending on the type of plastic used, the marking can vary from white to black. The contrast can be increased by adding suitable additives. Nd:YAG solutions
Both CO2 and Nd:Yag lasers can also be used to provoke the foaming of a polymer - the laser-processed area increases its volume which results in a raised marking.
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