Overview
Polyester white fiber balls are engineered filtration media composed of 100% polyethylene terephthalate (PET) fibers. These spherical aggregates are specifically designed for high-efficiency filtration applications where chemical resistance and mechanical durability are required. Unlike traditional filtration materials, polyester fiber balls offer a unique three-dimensional structure that provides both depth filtration and large dirt-holding capacity. Their pure white color indicates high-quality raw materials without additives or recycled content, making them suitable for sensitive applications like pharmaceutical water treatment.
Physical and Chemical Properties
The material exhibits excellent resistance to most acids, alkalis, and organic solvents up to 150°C, with a tensile strength of 50-60 cN/dtex. The fiber diameter typically ranges from 10 to 50 micrometers, creating a specific surface area of about 3000-5000 m²/kg that determines filtration efficiency. Thermal properties include a glass transition temperature of 70-80°C and melting point around 250°C. The fibers maintain dimensional stability between -40°C to 150°C, with moisture regain of only 0.4% at standard conditions, making them ideal for humid environments.
Main Applications
In industrial water treatment, polyester fiber balls effectively remove suspended solids down to 5-10 micron levels. They are particularly valued in power plant condensate polishing and electronics industry ultrapure water systems. The oil industry utilizes these fibers for crude oil dehydration and refined product filtration, where their oleophilic properties enhance performance. Other applications include swimming pool filtration, food-grade liquid processing, and compressed air purification systems where metal-free media are required.
Safety and Storage
While polyester fibers are generally recognized as safe, proper handling should prevent fiber dust inhalation. Storage should maintain relative humidity below 65% to prevent microbial growth on fiber surfaces. For fire safety, note that polyester melts rather than burns, requiring Class A fire extinguishers. Bulk storage should avoid compression exceeding 50kg/m³ to maintain fiber loft and performance characteristics.
B2B Procurement Guide
Key specifications to verify include fiber denier (commonly 1.5-3D), ball diameter (standard 20-50mm), and compression recovery rate (≥85%). Industrial buyers should request third-party test reports for filtration efficiency (β ratio) and dirt holding capacity. For large-volume procurement (5+ tons), consider factory audits to verify raw material quality and production consistency. Lead times typically range 2-4 weeks for customized specifications, with MOQs around 500kg for standard products.
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