Yes, polyester yarn can melt under certain conditions. Polyester is a thermoplastic material, which means it becomes soft and pliable when exposed to heat and can eventually melt if the temperature exceeds its melting point, typically around 250°C (482°F). The melting process occurs because the synthetic fibers of polyester soften and lose their structural integrity when heated.
In practical terms, this means that if polyester yarn is exposed to high temperatures, such as during certain manufacturing processes or accidental exposure to heat sources like hot irons or open flames, it may melt. This property is often utilized in the production of hot melt yarns, where controlled heating is applied to bond fibers together or to create specific textures and finishes. However, for everyday use, polyester yarn is relatively heat-resistant and can withstand normal conditions without melting. Proper care, such as avoiding high-heat settings in washing and drying, is recommended to preserve its shape and strength.
