The role of the material of the sun umbrella

1. Uv resistance of the fabric fiber itself

Experiments have proved that in the fibers that have not been treated, the anti-ultraviolet performance of polyester fiber is the best, the benzene ring in the molecular structure of polyester fiber has the effect of absorbing ultraviolet light, and the nylon fiber in the chemical fiber is also the rayon, rayon and so on, which has anti-ultraviolet performance but not as good as polyester. Therefore, the raw material of the sunshade determines that it has the function of preventing ultraviolet rays.

2. Fabric organization structure

The thickness and tightness of the fabric have a certain influence on its anti-ultraviolet performance. The thicker the fabric, the better the UV resistance, and the tighter the fabric, the stronger the light blocking ability, the smaller the UV transmission.

3. Fabric color

According to the test results of the Chinese Academy of Metrology, the color of the fabric also plays a role in UV blocking. The deeper, the smaller the UV transmittance, the better the UV protection performance. Generally, dark umbrella cloth can block 95% of UVA. Under the same conditions, the darker the color of the fabric, the better the UV resistance. In contrast, black, navy blue, dark green than light blue, light pink, light yellow and other anti-ultraviolet effect is good.