Polyester yarn

Polyester yarn is a synthetic textile material produced by spinning the polymer polyethylene terephthalate (PET), most commonly derived from petroleum and natural gas. The first polyester fibers were developed in the 1940s, and from the 1950s onward they experienced rapid global expansion in clothing, home textiles, and technical applications due to their low cost, resistance to moisture, insects, mold, deformation, and staining. Production involves the chemical synthesis of PET, melting the polymer, melt spinning into filaments, winding, drawing, crimping, and surface finishing. The resulting yarn can be produced as filament yarn (continuous fibers) or staple yarn (short fibers). Polyester is lightweight, strong, wear-resistant, quick-drying, shape-retaining, and available in many modified forms such as microfibers, hollow fibers, and blends with cotton, wool, or viscose. In the textile industry, it is widely used for garments (from sportswear to workwear), home textiles (curtains, upholstery), technical textiles (filters, ropes, insulation fabrics), and specialized applications such as medical textiles and protective clothing. A modern trend is the use of recycled polyester made from PET bottles to reduce environmental impact. Its disadvantages include hydrophobicity, the release of microfibers during washing, environmental concerns related to production, and challenges in recycling.