Laser Marking of Plastics

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Laser Marking of Plastics

Color Change, Foaming or Engraving

Laser marking of polymers relies on carbonization or foaming processes caused by laser beam absorption.

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  • Carbonization (a thermochemical process) produces dark marks. Foaming, a partial degradation creating gas-bubbles with in the material, scatters the light and produces light marks. Additives can help improving absorption properties. Applicable laser sources are Nd: YAG-, Nd: Vanadate- or fiber lasers.
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  • Harmonic wavelengths of 532 nm (green) and 355 nm (UV) can be used for bleaching and photo reduction processes. UV-induced photo reduction is often called „cold marking“, as there is no noticeable heating of the material.
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Laser Marking Machine

Laser Spare Part