How does the parasol?

1. Can a sun umbrella prevent ultraviolet rays?

The Parasol has a certain effect of anti -ultraviolet rays.Generally, the Solar umbrellas are used for protective fabrics such as silver glue, pearl cloth, and color ducts, which can block some ultraviolet rays.And some ordinary Solar umbrellas without ultraviolet coating also have a certain defense effect, but the sunscreen effect of this umbrella will be affected by the color of the umbrella.

2. Principles of sun umbrella UV protection

The principle of Solar umbrella -proof ultraviolet rays is mainly to reduce its transmission part, so that ultraviolet rays are reflected or absorbed as much as possible.There are currently two main methods: the first is to reflect or scatter it.There are two cases, one is the metal film, which is a mirror reflection and a regular reflection; there is also a beaded fabric, such as some umbrella surfaces that can scatter ultraviolet rays in the direction of reflection.The second method is to mix the materials that absorb ultraviolet rays inside the fabric fiber, or make later arrangement after the fabric is completed, and infiltrate some materials that absorb ultraviolet rays, such as nano -level zinc oxide or titanium dioxide.

How to choose sun umbrella

1. When choosing an umbrella surface, the fabric textiles are obviously sparse umbrella anti -ultraviolet performance, and consumers are carefully purchased.

2. Due to the characteristics of the fabric, the umbrella surface should be large or small when buying a Parasol.

3. The color of the fabric is related to the protection of ultraviolet rays.Under the same conditions, the deeper the color, the better the anti -ultraviolet performance. In contrast, black, hidden blue, dark green, light blue, light pink, light yellow and other ultraviolet resistance is better.

4. Before purchasing, check the protection level logo carefully.The "Evaluation of Textiles and UV performance" promulgated by the State Administration of Quality Supervision, Inspection and Quarantine stipulates that only when UPF (UV protection factor value) is greater than 30, and UVA (long wave ultraviolet) can be called anti -ultraviolet products through the rate of less than 5%.The standard is "UPF30"; when UPF is greater than 50, it indicates that the product ultraviolet protection performance is excellent, and the protection level logo is "UPF50".When buying, consumers should carefully check the protection level logo, and then buy an umbrella that suits them according to the local sun.

5. You can preliminary judgment of UV resistance based on the nature of the fabric of the umbrella surface.Generally speaking, the anti -ultraviolet performance of cotton, silk, nylon, adhesive, etc. is poor, and polyester is better.Poly -colored tannuts, Macbus, etc. that are usually used to make umbrellas.In addition, the anti -ultraviolet performance is best in satin fabric. The following is oblique and flat lines. The darker the color, the better.