PVC is a common material that cannot be laser processed. When burned, PVC produces HCl (hydrochloric acid gas) that will harm the lungs and corrode machine parts. When PVC is burned, it also produces highly carcinogens such as dioxin or polychlorinated biphenyls. PVC is often presented in the forms of sticker, film or transparent sheet.
ABS is a common material that cannot be laser processed. ABS tends to burn “dirty”, producing A (acrylonitrile), B (butadiene), and S (styrene), which are carcinogens category 2B, 1 and 2B.
• Plastics With Chlorine, Benzene, Ammonia, Fluorine, Phenol, Aldehyde in its Scientific Name or With A Hexagonal Benzene Ring in its Molecular Formula
When burning plastic molecules with these elements or organic structures, the chances of producing carcinogens and toxic substances are extremely high. Laser processing is not recommended.
▲ There should be no benzene ring in the molecule for the material to be laser-safe.