Toyota has developed a new airless painting method that uses static electricity instead of air, to replace the conventional ways used in the vehicle body painting process.
The newly developed airless painter, the first of its kind in the world, achieves over 95% coating efficiency (the amount of paint sprayed versus the amount that actually sticks onto the vehicle body), the highest in the world, from conventional efficiency of approximately 60 to 70%.
By doing so, the company is also expected to reduce its CO2 emissions by about 7%.
Toyota is advancing its efforts to achieve its “Plant Zero CO2 Emissions Challenge”, one of the targets included in the Toyota Environmental Challenge 2050 announced back in 2015.
Using conventional painting methods, paint particles are scattered by the air ricocheting off the vehicle body. By comparison, the new airless painting method uses electricity to spray the paint (electrostatic atomiser) and the statically charged particles coat in such a way that they gravitate toward the vehicle body (electrostatic painting) thereby achieving higher coating efficiency.
Electrostatic atomisation technology is used in beauty treatment devices and other instruments that spray fine amounts of liquid but as with typical Japanese resourcefulness to fine tune and optimise, with Toyota, it’s applied to vehicle body painting.