Water-Repellent Fabric
Water-repellent fabric is treated with a special surface finish that lowers the surface energy of the fibers, causing water to bead up and roll off instead of being easily absorbed. Unlike fully waterproof fabrics, water-repellent treatments generally do not completely block the fabric’s pores, helping maintain breathability and wearing comfort. This technology is widely used in outdoor apparel, jackets, sportswear, workwear, and other functional textiles.
Water Repellency Evolution: C8 → C6 → C0 / Fluorine-Free
Traditional C8 long-chain fluorinated DWR provides excellent water, oil, and stain repellency. However, due to environmental concerns associated with long-chain PFAS, including PFOA, C8 technology has been subject to strict regulatory restrictions in the European Union and other major markets.
The textile industry subsequently shifted toward C6 short-chain fluorinated DWR. C6 technology can maintain excellent water repellency and provide a certain level of oil repellency, but it is still based on fluorinated chemistry. Therefore, C6 does not necessarily mean PFAS-free or automatically compliant with current and future environmental regulations.
The EU has introduced further restrictions on PFHxA, its salts, and PFHxA-related substances. For consumer clothing, related accessories, and footwear, relevant restrictions will apply from October 10, 2026. Exporters to the EU should therefore carefully verify that their DWR chemicals and finished fabrics comply with the latest REACH requirements.
Today, the textile industry is increasingly moving toward C0 / Fluorine-Free DWR. Modern fluorine-free technologies can provide very good water repellency while reducing concerns associated with PFAS-based treatments. Although oil repellency is generally lower than that of C6 or C8 systems, fluorine-free DWR represents an important direction for more sustainable functional textiles.
The evolution from C8 to C6 and ultimately to C0 reflects the textile industry’s transition from performance alone toward a better balance of performance, environmental responsibility, and regulatory compliance.
E- mail : benny@shenggroup.com.tw
More products: www.shenggroup.com.tw
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