Does the white outside of the parasol protect against the sun? Is the parasol transparent and also protect against the sun?

Many people say that you should buy black plastic parasols. If the parasol is white, the sun protection effect is very poor. When choosing a parasol, you should consider the sun protection value of the parasol and whether it can effectively block ultraviolet rays.

Under the same fabric conditions, the darker the color, the better the UV protection effect of her umbrella. The biggest difference between a sun umbrella and other umbrellas is that a sun umbrella has an anti-UV coating that can prevent ultraviolet rays from penetrating the umbrella and prevent ultraviolet rays from causing damage to the skin. Therefore, the darker the color of the sun umbrella, the better the sun protection effect. The darker the fabric, the better the anti-UV performance, so some colors such as black have better UV protection than pink, yellow, white, etc. For fabrics, the thicker the umbrella surface and the tighter the fabric, the better its anti-UV ability will be. For cotton, silk, nylon, and polyester fabrics, they are more sun-proof. If you want to know its overall sun protection effect, you can also take it under the sun to dry it. The darker the shadow and the lower the light transmittance of the sun umbrella, the best sun protection effect. The higher the SPF, the better the sun umbrella, the better the sun protection effect. If its SPF is greater than 40 percent and its UV transmittance is less than 5%, it can be considered an excellent UV protection product. The larger the SPF value, the better its UV protection performance. Generally speaking, most of the labels on the market show a SPF of 50, and can be used as a general sunscreen product.

Parasols with better sun protection have thicker umbrellas. The tighter the fabric, the better the UV resistance. Compared with cotton, silk, nylon and other fabrics, polyester is more sun-resistant. If you want to know the sun protection effect of parasols, you might as well try it out in the sun. The darker the shadow and the lower the light transmittance, the better the sun protection effect. Therefore, parasols with light transmittance are not very good at sun protection.

1. Parasols cannot be used as umbrellas

The special anti-UV coating of parasols will be destroyed by the acidic substances in rainwater when it rains, and the sun protection effect will be greatly reduced, so parasols cannot be used to block rain.

2. The effect of blocking ultraviolet rays is very different

The parasol has a special UPF30+ anti-ultraviolet coating on the umbrella surface. The international standard is UPF30+ to truly block ultraviolet rays. It can also effectively protect against the sun at high temperatures above 25 degrees. Umbrellas cannot meet this standard.

3. Big difference in weight

Because the parasol material uses an anti-UV coating, it is slightly heavier than an ordinary umbrella.

1. Look at the fabric and lining

Common umbrella fabrics that can meet the sun protection requirements are: PG cloth, polyester, color glue, silver glue, pearl cloth (pearl glue). Black glue and PG cloth are recommended. The inner layer should be black, which is more stable, has good UV resistance, is not easy to fall off, and has good heat insulation effect while blocking light.

2. Look at the color

Under the same conditions, the darker the umbrella color, the better the UV resistance. Black umbrellas have the lowest light transmittance and can provide greater and stronger shade. At the same time, due to the wavelength, light-colored fabrics are more likely to absorb ultraviolet rays. So it is better to choose dark colors.

3. Look at the fabric

The tighter the fabric, the better the sunshade effect. Thin and sparse fabrics allow sunlight to penetrate easily, which will not achieve the sunshade effect. To judge the density of the fabric, you can find a strong desk lamp at night, turn off other light sources in the room, and put the top of the umbrella close to the desk lamp to see how much light you can see through the umbrella cloth.