Which is more environmentally friendly, powder coatings or traditional paints?
Powder coating is more environmentally friendly than traditional paint, and its environmental advantages are mainly reflected in low VOC emissions, no solvent pollution, recyclable utilization, and policy support, etc., as detailed below:
Low VOC emissions:
Powder coating, as a powder coating, does not contain volatile organic solvents, and the amount of organic volatiles released during the entire use process is less than 10%, which meets the technical requirements for low VOCs content coating products issued by the Ministry of Ecology and Environment. On the other hand, the VOCs content of paint (especially solvent-based paint) is generally above 500g/L, and even if water-based paint is used, its VOCs content is still between 100-300g/L.
No solvent pollution:
Powder coating exists in the form of solid powder, and there is no solvent volatilization during the production and use process, avoiding the air pollution caused by the solvent volatilization of traditional paint from the source. For example, after a certain home appliance enterprise replaced traditional solvent-based paint with powder coating, the VOCs emission concentration in the spraying workshop dropped from 150mg/m³ to 3mg/m³, and the operating cost of the waste gas treatment facility saved 120,000 yuan per month.
Recyclable utilization:
In the powder coating process, the powder that has not been melted can be recycled and reused, with a material utilization rate of over 95%, and the annual reduction of hazardous waste produced by a single production line is about 8 tons. On the other hand, when painting, solvents and diluents cannot be recycled and are prone to cause resource waste and environmental pollution.
