Spray Technology Guide
Content trust and applicability
Engineering guidance for robotic spray painting, paint booths, paint supply systems, and production-scope decisions.
Best used for early-stage feasibility checks, vendor comparison, scope definition, and internal project alignment.
Final specifications still depend on coating chemistry, part family, takt, utilities, site layout, local code, and EHS review.
Based on TD engineering team experience, recurring project delivery patterns, and equipment-integration practice.
Choosing the right paint technology is fundamental to paint cell design. This guide compares the three main atomization methods to help you make an informed decision based on your specific application requirements.
Technology Overview
Industrial painting uses three primary atomization technologies, each with distinct characteristics that affect finish quality, transfer efficiency, and operational requirements.
Conventional Air Spray
Uses high-pressure air (40-80 psi) to atomize paint into fine droplets. Oldest technology but still widely used.
- • Transfer efficiency: 25-40%
- • Best atomization fineness
- • Highest overspray
HVLP (High Volume Low Pressure)
Uses high air volume at low pressure (<10 psi at cap) for softer spray with reduced bounce-back.
- • Transfer efficiency: 65-75%
- • EPA compliant
- • Reduced overspray
Electrostatic
Charges paint particles (40-100kV) that are attracted to grounded parts. Best wrap-around coverage.
- • Transfer efficiency: 75-95%
- • Superior coverage
- • Requires grounding
Detailed Comparison
| Factor | Conventional | HVLP | Electrostatic |
|---|---|---|---|
| Transfer Efficiency | 25-40% | 65-75% | 75-95% |
| Equipment Cost | Low | Medium | High |
| Atomization Quality | Excellent | Good | Good to Excellent |
| Wrap-around | Poor | Poor | Excellent |
| VOC Compliance | May not meet | Compliant | Compliant |
Application Selection Guidelines
Choose Electrostatic When:
- • High production volume justifies equipment investment
- • Parts have complex geometry requiring wrap-around coverage
- • Paint cost savings from high transfer efficiency are significant
- • Parts can be reliably grounded through fixtures or conveyor
Choose HVLP When:
- • VOC emission compliance is required
- • Parts are non-conductive or difficult to ground
- • Waterborne paints are being used
- • Moderate transfer efficiency improvement is acceptable
Choose Conventional When:
- • Maximum atomization fineness is critical (high-gloss finish)
- • Small batch or prototype production
- • Budget constraints limit equipment investment
- • Specialty coatings require conventional atomization
Frequently Asked Questions
Need Help Selecting Paint Technology?
Our engineering team can evaluate your application and recommend the optimal paint technology for your specific requirements.
Topic cluster
flame treatment
This cluster centers on adhesion-critical coating projects where flame treatment turns low-surface-energy plastics into paintable parts.
Cluster hub
Overview page for flame treatment
Flame Treatment Guide
Core guide to robotic flame treatment for plastic parts and paint adhesion.
Flame Treatment FAQ
Questions about treatment window, surface energy targets, and integrated cells.
Flame Treatment Glossary
Surface-energy and adhesion terms that support flame treatment queries.
Flame Treatment Scenario
Scenario page for a bumper line needing reliable adhesion before basecoat and clearcoat.
Automotive Exterior Parts
Industry page covering plastic and composite part coating with adhesion-focused workflows.
Robotic Painting System
System-level solution connecting surface preparation, robots, booth control, and painting.