Xuchang Infrared Heating Technology Introduces Powder Coating Process

Xuchang infrared heating technology has emerged as a new trend in powder coating processes, introducing thermosetting powder coatings as a high-performance, low-polluting, energy-saving alternative. It has become one of the primary products replacing traditional solvent-based coatings. With the development of industries such as light industry, home appliances, electronic instruments, automotive, and corrosion prevention, as well as the growing demand for environmental protection, energy conservation, and resource conservation, the requirements for the output, quality, and variety of thermosetting powder coatings in our country are increasing day by day.

Our thermosetting powder coatings have evolved from the epoxy powder coatings developed in the early 1960s to the current epoxy/polyester powder coatings, pure polyester resin powder coatings, polyurethane powder coatings, and acrylic powder coatings. The curing conditions have been reduced from the original 180°C, 30 minutes to 180°C, 10-15 minutes, and even lower to 140°C, 10-15 minutes for thermosetting powder coatings. Concurrently, the improved quality of powder coatings has led to a decrease in the amount of powder applied per unit area, enhanced deposition on metal surfaces, and significantly higher powder utilization rates. As a result, the additional investment in recycling and reclamation has been greatly reduced.

Chinese resin manufacturers have made due contributions to the development of thermosetting powder coatings, with new types of resins being launched into the market sequentially. Particularly, the introduction of saturated carboxyl polyester resins in the late 1980s made it possible to replace some epoxy resin powder coatings with hybrid polyester/epoxy powder coatings. Since then, thermosetting powder coatings have experienced rapid growth, primarily due to their high decorative value and suitability for products such as home appliances and instruments.

All powder coating manufacturers in our country have established customer application technology service centers. It is recommended that users consult issues related to part pretreatment and application techniques at the beginning of using powder coatings from various factories, as the product performance and curing conditions vary among different manufacturers to ensure the product's inherent characteristics. Below, we discuss questions concerning the application of powder coatings, part pretreatment, and the application of construction techniques.