How to improve the UV protection of polyester fabrics for swimwear to better protect the skin from UV damage?

Improving the UV protection of polyester fabrics for swimwear is the key to protecting the skin from UV damage. Here are some effective methods and strategies:

SHINY SINGLE JERSEY FABRIC YT022

1. Use UV protection additives
Add UV absorbers: During the production process of polyester fibers, UV absorbers (such as benzophenones, benzotriazoles, etc.) are added. These additives can absorb UV rays and convert them into harmless heat, thereby reducing UV damage to the skin.
Add UV reflectors: Nano-sized titanium dioxide (TiO₂) or zinc oxide (ZnO) are used as reflectors. These materials can reflect and scatter UV rays and enhance the UV protection performance of fabrics. These additives can be directly mixed into the fiber raw materials or treated as a coating on the surface of the fabric.

2. Optimize fiber and fabric structure
Tightly woven structure: Use a high-density, tightly woven fabric structure to reduce the penetration of UV rays. Tight weaving can effectively block UV rays while maintaining the breathability and comfort of the fabric.
Multi-layer structure design: Design fabrics with multi-layer structures, such as adding moisture absorption and perspiration function to the inner layer and adding UV protection coating to the outer layer. This structure not only improves UV protection performance, but also enhances the overall function of the fabric.
Special fiber cross-section design: Develop polyester fibers with special cross-sectional shapes, such as triangles, pentagons or hollow fibers. These special cross-sections can increase the surface area of ​​the fiber, thereby better reflecting and scattering UV rays.

3. Use functional coating technology
UV protection coating: Apply a layer of UV protection coating on the surface of the fabric, which can effectively block UV rays. The advantage of coating technology is that the thickness and composition of the coating can be adjusted as needed to achieve different protection effects.
Durable coating: Choose a UV protection coating that is washable and chlorine-resistant to ensure that the fabric can maintain good protection performance after multiple uses. This coating is usually fixed to the fiber surface by chemical bonding or nanotechnology and is not easy to fall off.

4. Develop new polyester fiber materials
Functional polyester fiber: Develop new polyester fibers with built-in UV protection. For example, through chemical modification or copolymerization technology, UV protection function is embedded in the fiber molecular structure to achieve a lasting protection effect.
Bio-based polyester fiber: Develop polyester fibers based on bio-based raw materials. These fibers not only have good environmental performance, but also can enhance UV protection function through special chemical treatment.

5. Product testing and certification
UV protection performance test: The improved fabrics are strictly tested for UV protection performance, including UV transmittance (UPF value) test. The higher the UPF value, the better the UV protection performance of the fabric. It is generally recommended that the UPF value reach 30 or above to effectively protect the skin.
International standard certification: Ensure that the product meets international standards (such as Australian/New Zealand standard AS/NZS 4399 or American AATCC standard). These standards have clear requirements for UV protection performance, and certified products can protect consumers more effectively.

6. Consumer education and transparency
Clear labeling: Clearly mark the UPF value and UV protection function on the product label to let consumers clearly understand the product's protection performance.
Educate consumers: Through publicity and education, let consumers understand the importance of UV protection and how to correctly choose and use swimwear and beachwear with UV protection function.