Powder Coating for Metal Housings

　　The coating line consists of processes including material loading, drying, shielding, leveling, re-drying, and material unloading. Among these, a critical step in the coating process is the generation of certain types of pollution—such as exhaust gases, wastewater, and waste residues.

　　According to professionals in the coating line industry, to address exhaust gas issues, the first step is to use environmentally friendly, pollution-free paints—specifically, coatings that contain no organic solvents. If there are no viable alternatives to organic-solvent-based paints, then those paints must be used. In such cases, the exhaust gases generated by organic solvents during the spraying process need to be collected and treated centrally. Only after proper treatment can the gases be diluted before being safely released into the atmosphere.

　　It is understood that the exhaust gases produced in this drying oven are generally combustible, so they are treated by combustion. The gases generated during combustion—and any unburned gases—are then purified using activated carbon adsorption. Additionally, to minimize waste gas emissions, dust is generated during the sanding process. To effectively control dust levels during spraying, the sanding, cleaning, and painting steps are carried out separately, with each process taking place in its own dedicated workshop. This approach prevents dust from entering the spray booth and drying oven, thereby eliminating its impact on the spraying process.

　　With the rapid advancement of industry, spray coating lines have gradually gained wider recognition. Yet, when it comes to these lines, many people still may not fully understand their functionality and benefits. So, let me introduce them to you—right now, it’s the turn of Keno’s representative to provide an overview.

　　In the industrial sector, while its quality is certainly reliable, some people often argue that, after all, spray coatings are chemical products and can never quite match the natural materials. They also point out that these coatings may still carry potential toxicity, odors, and environmental risks. However, according to extensive research, this isn’t entirely true. Since the raw materials for spray coatings are produced overseas through a highly refined process, any harmful substances are thoroughly removed during manufacturing. As a result, spray coatings are completely non-toxic and odorless—posing no significant threat to human skin or respiratory systems. Moreover, one of their standout advantages is that they significantly reduce the need for traditional wood-based materials and harmful paints, particularly benefiting individuals who suffer from allergies to wood or conventional paints. By minimizing reliance on these resources, spray coatings help protect forests and the environment, playing a vital role in preserving ecological balance.