1. High strength of polyester curtains. The short fiber strength is 2.6～5.7cN/dtex, and the high tenacity fiber is 5.6 polyester～8.0cN/dtex. Due to its low hygroscopicity, its wet strength and dry strength are basically the same. The impact strength is 4 times higher than nylon and 20 times higher than viscose fiber.
2. Good flexibility. The elasticity is close to that of wool, and it can almost completely recover when it stretches 5% to 6%. The wrinkle resistance is better than other fibers, that is, the fabric is not wrinkled and has good dimensional stability. The modulus of elasticity is 22～141cN/dtex, which is 2～3 times higher than nylon.
3. Heat resistance and thermal stability are the best among synthetic fiber fabrics.
4. Polyester has a smooth surface and tightly arranged internal molecules.
5. Good abrasion resistance. The abrasion resistance is second only to nylon, which is the best in abrasion resistance, and is better than other natural fibers and synthetic fibers.
8. The dyeability is poor, but the color fastness is good, and the color is not easy to fade.