Due to its reliable performance and ability to air dry within minutes, solvent based coatings are often designated as a topcoat. Unfortunately, due to the need to reduce VOC emissions during application, most traditional liquid coating formulations no longer exist.

This has led to the development of more environmentally friendly coatings, such as new water-based formulations and high solid coatings that emit low VOCs. From the early versions used 15 years ago, the water carrying capacity has gradually been accepted. However, some manufacturers still have reservations about directly applying water-based products to metals. High solids refer to liquid coatings with a solid content of at least 65%, indicating the presence of minimal solvents. But less solvent also means that the coating is more viscous. This has led to the development of multi part application systems (if two parts are mixed, if three parts are mixed, it is called a 2K system, then a 3K system is mixed, etc.), which are configured to mix only seconds before application.

All coating machines for liquid coatings. The sprayed water cannot be recycled. If filters are used to capture excess spray, the finisher must dispose of the filters in accordance with the regulations established by the local government.

The powder room does not require exhaust. As mentioned earlier, if there are emissions of volatile organic compounds during powder coating, they are usually very low.

Powder coating can be recycled using the right filling equipment. The company looking for courses has a reclamation system that relies on thorough cleaning and maintenance, as any cross contamination of recycled materials can damage the ability of the original materials to provide specific colors.

Again, the handling of undiscovered powder coatings is governed by local regulations. In some cases, local laws may require handling in sealed containers or require powder coatings to be baked into bricks for disposal in local landfills.