Anti UV polyester dope dyed filament yarn is a functional yarn that is formed by spinning after the masterbatch and UV absorber are injected simultaneously during the polyester melt polymerization stage. Its resistance to sunlight fading comes from the dual protection of material design and production process.
The UV absorber added to anti UV polyester dope dyed filament yarn can effectively capture high-energy UV radiation and eliminate its destructive effect on dye molecules through energy conversion. This protection runs through the entire fiber and has a durable advantage over surface coating treatment. The solution coloring process allows the pigment molecules to penetrate deeply into the gaps between polyester molecular chains and form a physical bond with the fiber matrix. Under sunlight exposure, this bonding structure can resist the oxidation and decomposition reaction of the dye caused by ultraviolet rays.
In contrast, the dye of traditional post-dyed polyester yarn is only attached to the surface of the fiber, and ultraviolet rays can directly act on the dye molecular chain, accelerating its photodegradation process. Ordinary yarn lacks the protection of UV absorbers, and the pigment molecules are prone to chemical bond breakage under continuous radiation, resulting in color decay.
Anti UV polyester dope dyed filament yarn can achieve long-term color retention by internal ultraviolet energy to eliminate the stable combination of pigment and fiber.
