How to choose a parasol

The sun is very important to all things in the world. It not only brings light but also makes appropriate changes to the climate so that humans can live a healthier life. However, excessive exposure to the sun can have a very negative impact on the body. To avoid excessive exposure to the sun, you must choose appropriate sun protection tools. Such as parasols, etc. So how do you choose a parasol? Let us introduce it below.

1. When choosing an umbrella surface, umbrellas with obviously sparse fabrics generally have poor UV resistance.

2. Since fabrics tend to shrink, when purchasing a parasol, it is better to choose a larger umbrella rather than a smaller one.

3. The color of the fabric is related to its UV protection performance. Under the same conditions, the darker the color of the fabric, the better the UV resistance. Black, navy blue, and dark green have better UV resistance than light blue, light pink, and light yellow.

4. Carefully check the protection level mark before purchasing. The "Evaluation of UV Protection Performance of Textiles" issued by the General Administration of Quality Supervision, Inspection and Quarantine stipulates that only when the UPF (ultraviolet protection factor) is greater than 30 and the UVA (long-wave ultraviolet) transmittance is less than 5%, can it be called an anti-ultraviolet product, and the protection level standard is "UPF30+"; when the UPF is greater than 50, it indicates that the product has excellent UV protection performance, and the protection level is marked as "UPF50+".

5. Whether a sun umbrella can block ultraviolet rays, the texture of the fabric is not the most important thing. The main thing is what kind of technical processing the manufacturer has done on the fabric. Generally speaking, cotton and linen fabrics have certain UV protection properties, but the degree is not strong. In the past two years, most of the sun protection umbrellas sold on the market were coated with a layer of silver glue on the umbrella surface. This treatment can reflect and block some direct ultraviolet rays. However, the quality of silver glue varies. The silver glue of sun umbrellas produced by manufacturers with good technical conditions is not easy to fall off, while some cheap sun umbrellas are just coated with a layer of silver on the umbrella surface in order to make up the number, and the color fades after being exposed to sunlight several times.

6. When the umbrella surface is wet, due to the optical conduction of water, the transmittance of ultraviolet rays increases and the protective effect decreases. Therefore, wet umbrellas are not suitable for UV protection. "Useful in both sun and rain" does not apply to parasols. If parasols are frequently exposed to acidic and alkaline substances in rainwater, the coating may age and reduce the sun protection effect.

How to choose a parasol is a question for many people, and the above introduction is the answer to this question. Only by choosing a suitable parasol can your body be exposed to less sunlight. Only then can it have very good health care effects. If you don't choose the parasol correctly, you will be exposed to the sun more severely. It is very harmful to health.