Antibacterial and Mildew-Proof Powder Coatings for Humid and Sanitary Environments

High humidity and high-sanitary environments such as hospital wards, medical equipment surfaces, food processing workshops, catering kitchens, bathroom facilities and public elevator interiors are prone to the reproduction of bacteria, mold and microorganisms. Ordinary powder coatings only have decorative and anti-corrosion functions, without antibacterial and mildew-proof capabilities. Long-term use will lead to mold spots, bacterial accumulation and surface odor, which cannot meet the health and safety standards of medical and food-grade scenarios. Therefore, antibacterial and mildew-proof functional powder coatings have become essential supporting materials for sanitary-grade facilities.

Antibacterial and mildew-proof powder adopts inorganic antibacterial technology, adding silver ion, zinc ion and other high-efficiency, safe and thermally stable antibacterial agents into the resin system. Different from organic antibacterial agents which are easy to decompose and fail at high temperature, inorganic antibacterial agents can withstand the high-temperature curing process of 180-200℃ for powder coating, with stable performance and no toxicity and no volatilization. After the coating film is formed, the antibacterial ions can be slowly released to destroy the cell structure of bacteria and mold, effectively inhibiting the growth of Escherichia coli, Staphylococcus aureus, mold and yeast, and the antibacterial rate can reach more than 99%.

In actual production, the dosage and dispersion uniformity of antibacterial agents are the core factors determining product quality. Excessive addition of antibacterial agents will cause coating discoloration, yellowing and reduced weather resistance, while insufficient addition will lead to unqualified antibacterial effect and poor mildew resistance. In addition, uneven dispersion will result in local antibacterial failure of the coating film, forming sanitary dead corners. These problems have always been the key difficulties restricting the stable mass production of sanitary-grade powder.

TYOPSUN’s intelligent precision production system perfectly solves the above production pain points. The micro-metering batching system accurately controls the addition of trace antibacterial additives with ultra-low error. The multi-stage circulating high-speed mixing technology realizes the uniform distribution of antibacterial components in the whole powder system, without local concentration difference. The optimized low-temperature curing extrusion process protects the activity of antibacterial functional components and avoids performance attenuation caused by thermal decomposition.

The finished antibacterial and mildew-proof powder produced by TYOPSUN has stable performance, no color difference, no yellowing, long-term antibacterial and mildew-proof effect, and meets medical grade and food-grade safety standards. It is widely used in medical equipment, hospital decoration, food machinery, kitchen equipment and public sanitary facilities, effectively improving the sanitary safety level of humid environments.