| Primary Material | Water-based or solvent-based traffic paint | Water-based or solvent-based traffic paint | Preformed or hot-applied thermoplastic material | Two-component reactive resin, commonly MMA or similar systems |
| Typical Application | Road centerlines, edge lines, parking lots, bicycle lanes, and maintenance work | Large-area line marking where a softer spray finish is acceptable | High-wear road markings, intersections, urban roads, and heavy-traffic areas | Long-life markings, symbols, textured surfaces, and high-performance installations |
| Line-Width Adjustment | Usually about 50–600 mm, depending on the spray tip and configuration | Usually about 50–600 mm, depending on the air cap and nozzle setup | Commonly about 50–500 mm; wider markings may require multiple guns | Commonly about 50–600 mm, depending on the mixing and spray system |
| Line-Width Consistency | High when pressure, tip size, and travel speed are controlled | Moderate to high; wind and atomizing-air settings can affect overspray | High after material temperature and bead application are stabilized | High when component ratio, pressure, and spray distance remain stable |
| Material Heating Requirement | No heating normally required | No heating normally required | Required for hot-applied thermoplastic; material temperature is commonly controlled around 180–220°C, subject to the material specification | Normally no bulk heating, although some formulations and equipment use controlled heating |
| Application Speed | Often about 3–12 km/h, depending on paint, line width, surface, and required wet-film thickness | Often about 3–10 km/h, depending on atomization and coverage requirements | Often about 3–10 km/h, depending on material flow, thickness, and cooling conditions | Often about 3–12 km/h, depending on resin system, mixing ratio, and curing time |
| Wet-Film or Layer Thickness | Commonly about 0.3–0.8 mm wet film, subject to paint and specification | Commonly about 0.3–0.8 mm wet film, subject to paint and specification | Commonly about 1.5–3.0 mm for hot-applied lines | Commonly about 0.5–2.0 mm, depending on the resin and performance requirement |
| Glass-Bead System | Optional or integrated gravity-drop or pressurized bead dispenser | Optional or integrated bead dispenser; overspray control is important | Usually integrated bead dispenser for retroreflective performance | Often integrated bead dispenser; compatible beads must be confirmed with the resin system |
| Transfer Efficiency | Generally high because airless spraying uses limited atomizing air | Moderate; atomized paint can create more overspray in windy conditions | High, provided the material is kept within the correct temperature range | High when spray pressure, mixing, and gun distance are correctly adjusted |
| Power Source | Petrol engine, diesel engine, battery-electric, or hydraulic power unit | Typically petrol or diesel engine with an air compressor | Engine-driven system with fuel-fired or electric material heating | Engine-driven, hydraulic, pneumatic, or electric system depending on machine size |
| Typical Operating Pressure | Approximately 100–230 bar for many airless paint systems; verify the paint and pump limits | Paint pressure is generally lower, with atomizing air commonly around 2–7 bar | Material pressure varies by pump design; temperature and flow control are more critical than a single pressure value | Component and atomizing pressures vary significantly; the equipment must maintain the specified mixing ratio |
| Surface Preparation | Surface must be clean, dry, structurally sound, and free from oil, loose dust, and standing water | Requires the same basic preparation; additional attention is needed to control wind and dust | Surface must be dry and sufficiently clean; primer may be required on certain substrates | Requires strict cleanliness and dryness; moisture and contamination can reduce adhesion or curing quality |
| Control Features to Prioritize | Adjustable pressure, reversible tips, dead-man trigger, line-width control, and digital speed display | Independent paint and air controls, compressor capacity, adjustable fan pattern, and dead-man trigger | Thermostatic temperature control, insulated hoses, heated guns, material-level monitoring, and bead synchronization | Accurate metering pumps, ratio monitoring, heated or insulated lines where required, purge system, and static mixer control |
| Navigation and Layout Functions | Laser guide, front-wheel tracking, adjustable handlebar, and optional digital distance measurement | Laser guide, adjustable handlebar, and distance counter for long straight lines | Laser guide, steering alignment, automatic bead control, and programmable line-gap settings | Laser or mechanical guide, programmable line-gap control, and component-flow monitoring |
| Cleaning and Maintenance | Flush the pump, hose, gun, and filters with the approved cleaning fluid after use | Clean paint passages, air caps, nozzles, filters, and compressor moisture traps | Remove residual material safely, inspect heaters and hoses, and follow hot-surface procedures | Clean the mixer and gun promptly; cured resin may require mechanical removal or approved solvent procedures |
| Operator Safety Priorities | Pressure-injection protection, eye protection, gloves, ventilation, and traffic-control measures | Respiratory protection where required, ventilation, hearing protection, and overspray control | Burn protection, insulated gloves, face protection, hot-material procedures, and traffic separation | Chemical-resistant gloves, eye and skin protection, ventilation, and strict component-handling procedures |
| Best Selection Scenario | A versatile, economical choice for general road and pavement marking | Useful when a softer spray pattern and broad coverage are more important than maximum transfer efficiency | Best where durability, thickness, and resistance to traffic wear justify heating equipment | Best for specialized, long-life markings when operators can manage precise chemical metering and cleaning |
| Key Purchase Check | Confirm pump output, maximum tip size, compatible paint viscosity, bead dispenser, and spare-tip availability | Confirm compressor airflow, air-pressure stability, nozzle compatibility, and overspray-control capability | Confirm heating capacity, temperature uniformity, hose insulation, hopper volume, and emergency shut-off functions | Confirm component capacity, mixing-ratio accuracy, cure-time compatibility, purge design, and chemical-resistant seals |