Polyester is made from polyester fibers. Nylon is made from polyamide fibers.
Nylon has the highest wear resistance among all fibers, it is 10 times that of cotton fibers, 10 times that of dry viscose fibers, and 140 times that of wet fibers, making it extremely durable.
Polyester also has good wear resistance, second only to nylon.
Thick nylon thread has excellent elasticity and elastic recovery. Although it becomes wrinkled under small external force, it can quickly recover its original shape.
Polyester has lower elasticity, so it is not easy to wrinkle. When tightly squeezed, the fabric will not have obvious creases, and it has good dimensional stability.
Polyester strong thread for leather is resistant to acid, bleaching agents, oxidants, hydrocarbons, ketones, and petroleum products. It also has good resistance to mold and insect infestation.
Nylon is more resistant to alkalis and also has good resistance to mold and insect infestation.
Polyester is not easy to get damp and is very easy to dry after washing, making it have good wash and wear performance.
Nylon has higher moisture absorption and good fabric exhaust and sweat permeability.
Polyester has a strong silk feeling and bright luster, with a sparkling effect.
Nylon has a relatively dim gloss compared to polyester, and the colors are not as bright.
Polyester is more UV-resistant than nylon and will not be affected by prolonged exposure to sunlight.