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Learn more about transfer efficiencies
 

Transfer efficiency Tests:

Learn more about transfer efficiencies
The transfer efficiency rate is the relation between the coating material precipitated on a surface and the squirted solid part. Paint spray guns with high transfer efficiency rates allow a cost effective and environment-friendly surface coating because they do not produce much material waste and save paint and thus important cost.
Statements of a certain paint spray gun manufacturer advertising with transfer efficiency rates significantly higher than those indicated here and which are in some parts even higher than 90% cannot be confirmed under practice conditions and do not represent a fair comparison with products of other gun manufacturers.
Furthermore, the indication of only a transfer efficiency rate is not sufficient for the presentation of a spray gun’s performance because numerous varying parameters influence the transfer efficiency significantly:
  • Viscosity of the material
  • distance to the object to be painted
  • size of spray fan
  • inlet pressure of the spray gun
  • material pressure
  • size of the surface to be coated
  • quality of the atomisation
  • possible side coating
  • vertical or horizontal spraying
Therefore:
An exact and fair comparison of different paint spray guns is only possible when effecting a comparison measurement on the same test bench with the same parameters considering the achievable surface finish with these parameters (practice conditions).
Certificates of Thatcham Institute:
Transfer efficiency rate in % - click on the certificate to view the image in high-resolution
SATAjet RP
Water based base coat - 72,7 %
2K HS Laquer - 68,6 %
Please keep in mind that transfer efficiency rates are depending on habits and on material.
More test results and certificates of Thatcham and Fraunhofer Institute realized under realistic painting conditions exist for other gun types and brands.

    
 
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