Faced with the dual drive of market demand iteration and technological innovation, powder coating urgently needs to break through multiple bottlenecks.

1>Powder Coating thinness and flatness
For metal products such as color steel plates, powder coating is difficult to achieve the thinness and flatness of liquid coating. The thickness of traditional coating is usually 60~80um, while the thickness of liquid coating for color steel plates is generally 20~25um. Too thick coating not only increases the cost of coating but also reduces the flexibility of coating.

2>Powder coating adopts spraying method, which is difficult to accurately control the film thickness and difficult to achieve the uniformity requirements of thinner coatings. The best existing coating production line needs to achieve color stability and uniform performance, and the coating thickness needs to be above 40um.

3>Fat edge problem
Traditional powder coating relies on electrostatic adsorption to apply powder, so excess powder accumulates at edges, causing the “fat edge” defect that degrades product appearance and performance, ultimately requiring costly rework.

4>Curing temperature
Conventional general-purpose powder coatings require elevated curing temperatures, significantly increasing energy consumption and operational costs, consequently limiting their broader applicability to various heat-sensitive substrates and components.

Faced with these challenges, industry needs to take positive and effective measures. On the one hand, increase investment in scientific research and break through key technical issues, such as developing low-temperature curing powder coatings, improving spraying equipment and processes, etc., to improve product quality and production efficiency. On the other hand, strengthen industry self-discipline and norms, effectively control new production capacity, and improve bargaining power to resist the adverse effects of raw material price fluctuations. At the same time, companies should also strengthen cooperation with upstream and downstream companies to jointly promote the development and application of powder coating technology.https://www.lekamaterial.com/news/