| Formulation basis | Uses organic solvents that evaporate during drying. | Uses water as the primary carrier; additives or co-solvents may still be present. | Uses reactive components that polymerize under UV light. A true 100% solids formulation contains no intentionally added evaporative carrier. | A clear formulation description supports environmental documentation across different markets. |
| VOC potential | Generally higher VOC potential because solvent carriers evaporate. | Generally lower VOC potential than solvent systems, but the actual level depends on the formulation. | Typically very low VOC emissions during curing when a 100% solids formulation is used; confirm the exact value in the product SDS or technical data sheet. | Lower VOC potential can simplify reviews against regional air-quality requirements, subject to local rules. |
| Drying or curing mechanism | Solvent evaporation followed by film formation. | Water evaporation, often supported by heated air or controlled drying. | Photopolymerization initiated by UV energy; the printed layer solidifies when adequately exposed. | Fast curing can reduce handling time and support shorter production-to-shipment schedules. |
| Typical post-print handling | May require ventilation, drying time, and solvent-emission controls. | May require additional drying time, especially at high ink coverage or in humid conditions. | Can normally be handled immediately after complete curing, provided the print surface passes quality and adhesion checks. | Reduces the risk of blocking, smearing, or transfer during packing when curing is properly controlled. |
| Material utilization | Part of the applied ink volume is lost as solvent evaporates. | Part of the applied volume is water or other carrier that evaporates during drying. | The cured film is formed mainly from the applied ink solids; there is no carrier-loss mechanism in a genuine 100% solids system. | Supports more predictable ink consumption and helps reduce evaporative material loss. |
| Substrate flexibility | Commonly used on selected flexible films and coated materials. | Often effective on absorbent or specially coated substrates; drying performance varies by material. | Can print on many non-porous materials, including coated boards, plastics, glass, metal, and selected flexible substrates, subject to ink adhesion testing. | Broad substrate compatibility can reduce the need for separate processes for different destination markets. |
| Environmental compliance checkpoint | Review VOC limits, ventilation requirements, worker exposure controls, and waste-handling obligations. | Review formulation additives, wastewater or rinse-water handling, and local VOC requirements. | Review the SDS, photoinitiator content, residual-monomer information, curing validation, and end-use restrictions. | Compliance is determined by the complete ink, substrate, process, and end use—not by the printing technology alone. |
| Best-fit benefit | Useful where strong solvent resistance and flexible-film performance are required. | Useful where water-based chemistry and absorbent-substrate compatibility are priorities. | Combines low-VOC potential, rapid curing, high material utilization, and broad substrate options. | A practical option for international orders that need documented environmental performance and efficient fulfillment. |