Powder coating and coating technology applications

Due to the huge environmental pressure, powder coatings continue to replace the liquid paint has become the mainstream of today, with the powder coating and coating technology improvements, the application of powder coatings will be greater. Improvements in powder coatings and coating technologies are mainly due to the growth in demand in the automotive industry, home appliance industry and general industry, including improvements in raw materials, milling and coating technology. Powder coating in the automotive industry continues to expand, automotive chassis, interior parts, wheels and body are beginning to use powder coating. Technical improvements in automotive powder coatings include: transparency, adhesion, leveling and UV resistance of transparent powders: minimizing curing temperatures as much as possible to ensure the appearance and performance of powder coatings; and various coating techniques ( Such as robotics, airflow control technology and high powder rate technology).

    Powder coating of precoated metal plate (coil) in the home appliance industry, the rapid growth of the application, requiring powder coating in 25 ~ 60s to complete the melting, flow leveling and curing the whole process, while maintaining a good coating appearance and the Resistance. The powder coating for household appliances must have a certain postformability, and its degree of molding depends on the end use. Coated plate should be stacked together, ordinary metal sheet coating film coating speed should reach 30 ~ 80fpm, coil coating line speed should reach 100fpm. In addition the air flow control (or lower), the powder rate or charge transfer rate should be controlled in the best condition. The improvement in the appearance of the cured coating at high coating speed is the main direction of the improvement of the home appliance powder coating technology. It involves the matching of infrared light wavelength / light intensity with coating and substrate, fast leveling convection heating and induction The curing process, the curing process of the surface of the powder coating, and the degree of cleanliness of the entire curing system.

The development of the automotive industry and the home appliance industry has led to the development of specialty powder coating systems and coating technologies. The application of specialty powder coatings for use in different processes has been increasing and gradually entering areas that have been difficult to access Color requirements too much, too fast coating, paint bleaching serious, too much coating, etc.). In the ordinary industrial coatings market powder coating can provide a variety of batches of products to meet the needs of many small customers and become another bright spot. The increasing demand for milling equipment suppliers and raw material suppliers has also prompted many regional paint suppliers to add powder coating production lines, while the mature European market has continued to have new powder coating raw materials and coating equipment available.

In short, the increase in the number of suppliers for small and medium-sized powder users is the most favorable, they can get a stable price of raw materials, the product more practical. However, the development of large powder customers is often only a small number of specific suppliers benefit, so that they and powder coatings, painting process, as well as end users greater relevance.