Polyester Spun Yarn and Polyester Filament are two different types of yarn made from polyester fibers. Let's explore their differences in terms of material, production process, utility, and their influence on the yarn market.

Material:Polyester Spun Yarn produced from short polyester fibers, also known as staple fibers. Polyester Filament is made from long continuous polyester fibers.

Utility: Polyester Spun Yarn is widely used in various textile applications, including apparel, home furnishings, and industrial textiles. It is particularly suitable for fabrics that require softness, breathability, and moisture-wicking properties.Polyester Filament  is commonly used in applications where high strength, smoothness, and luster are desired. It finds applications in fabrics for apparel, upholstery, automotive interiors, and other technical textiles.

The polyester spun yarn market, although relatively smaller compared to filament yarns, remains steady. It caters to specific applications that require the characteristics of staple fibers, such as softness, warmth, and breathability. The demand for spun yarns is primarily driven by the apparel and home textiles sectors. 

Overall, both polyester spun yarn and filament play important roles in the textile industry, serving diverse applications and meeting different market demands. The continuous development of new processes, materials, and technologies in polyester fiber production contributes to the ongoing evolution of the market.