Pigments Powder for Coil Coatings

Strategic Partner for the Coil Coating Industry

Deqing Demi Pigment Technology Co., Ltd. is a specialist supplier to the global coil coating market. We provide the high-performance inorganic pigments necessary for the production of pre-coated aluminum and steel. Our pigments are chosen for their ability to meet the stringent "durability" requirements of the building industry (e.g., PVDF or HDP systems). We understand the fast-paced nature of coil lines and provide pigments that disperse rapidly and consistently, ensuring maximum uptime and minimum color-related rejections.

Coil Coating Application Areas

• Metal Roofing: Long-life coloring for residential and industrial roof panels.
• Wall Cladding: Consistent architectural colors for large-scale facades.
• Appliance Housing: Pre-painted sheets for refrigerators and air conditioners.
• Gutters and Trim: Color-matched components for the building exterior.

Coil Coating Technical Specs

Operational Benefits for Pre-Paint

• Fast Cure Tolerance: Withstands intense heat without yellowing or hue shift.
• Flexibility Retention: Fine particles are easily wetted, ensuring no structural weak points in the film.
• High Hiding Power: Provides full color coverage even at 15-25 μm dry film thickness.
• Edge-to-Edge Uniformity: Ensures consistent color across the entire width of the metal coil.

• Q: Are these pigments compatible with PVDF (Kynar) resins?

  A: Yes, our high-purity inorganic oxides are the industry standard for 70% PVDF coatings due to their absolute UV stability.

• Q: Do they resist "acid rain" and pollutants?

  A: Absolutely. Our pigments are chemically inert and provide superior resistance to sulfur dioxide and other atmospheric pollutants.

High-Throughput Quality Control

We utilize automated color measurement systems on our production lines to ensure that every ton of pigment meets the ultra-tight color tolerances required for coil coating, where the ΔE limit is often below 0.5.

Micro-Fine Milling: To ensure zero surface defects on the smooth coil finish, we mill our pigments to a Hegman rating of 7+, eliminating any possibility of "overspray" or "craters" in the final coating.

Consistency and Reflectance Science

Coil coating color science focuses on "Metamerism" and "Reflectance." We ensure that our pigments provide a consistent color under daylight (D65) and artificial light (A or TL84), which is critical for architectural components. We also provide "Cool Roof" pigments with high Near-Infrared (NIR) reflectance, providing spectral data to help coil coaters meet LEED and Energy Star requirements. Our lab monitors the "Gloss/Color interaction" to ensure that the finish remains uniform even when the metal is stretched or formed into profile.