Can Laser Engraving Be Done on Plastic
Yes, laser engraving can be done on many types of plastic, but the results depend on the material composition and the type of laser used. Here’s what you need to know:
1. Suitable Plastics for Laser Engraving
ABS – Engraves well but may produce fumes; requires ventilation.
Acrylic (PMMA) – One of the best plastics for laser engraving, producing a smooth, frosted finish.
Polycarbonate (PC) – Can be engraved but tends to discolor (yellow/brown) and may release harmful fumes.
Delrin (POM) – Engraves cleanly but releases formaldehyde, requiring proper ventilation.
PET & PETG – Can be engraved but may melt unevenly.
Nylon – Engraves decently but can produce rough edges.
PVC – Avoid – Releases toxic chlorine gas when lasered.
2. Plastics to Avoid
PVC (Polyvinyl Chloride) – Produces toxic chlorine gas, damaging lasers and health.
Vinyl & Teflon (PTFE) – Hazardous fumes when lasered.
Polystyrene & Foam – Can melt excessively or catch fire.
3. Best Laser Types for Plastic Engraving
CO₂ Lasers (10.6 μm wavelength) – Ideal for most plastics, especially acrylic.
Fiber Lasers – Better for marking (not deep engraving) certain plastics like ABS or polycarbonate.
Diode Lasers – Can work but may struggle with melting or inconsistent results.
4. Key Considerations
Ventilation & Safety – Some plastics release toxic fumes; always use an exhaust system.
Power & Speed Settings – Lower power/high speed prevents excessive melting.
Test First – Always run a test on a small area to check results.
5. Applications
Signage & Labels (Acrylic, ABS)
Electronic Housings (Polycarbonate)
Medical Devices (Delrin)
Decorative Items (PETG, Nylon)
