Everyone has done a lot of work on this aspect of sun protection, and there are many sun protection tools on the market. For example, a portable sunscreen umbrella, a sunscreen spray used during military training, and a sunscreen applied before work in the afternoon. About parasols you have any good recommend it? Which umbrellas sunscreen effect is good? So we went with small series with a look at what's good protection from the sun umbrellas introduce exciting content related to it.
UV protection and light transmission When you judge whether an umbrella is sunscreen, you often mix two concepts: UV protection and light transmission. These two are completely different and everyone must remember.
The ultraviolet light in the sun is different from the ordinary light wavelength, and the ultraviolet light is invisible. If you hit a black umbrella, you will feel the black under the umbrella, which will make you feel very sun-protected.
But if you sit on an umbrella and catch a fish for a day, you will find that you will still be sunburned, and the skin will still be red or even suede. So, if you go to the mall to buy an umbrella, there will be a lot of salespersons telling you that you will be holding the umbrella against the light. If you can't see the light, it means it is a good sunscreen effect. You should be careful when you hear this sentence. This umbrella may not be as they say.
Well, to turn a corner, to a sun umbrella, mainly depends on the sun protection index is the anti-UV index, the higher the index, of course, the better the sunscreen effect, the umbrella of the regular brand will require each umbrella to bet The corresponding sun protection index, (insert here: according to national requirements, the umbrella label should indicate the sun protection index, umbrella fabric, umbilical component and umbrella size) so you should find a regular brand when you choose.
Look carefully at the relevant index on the card. So when it comes to light transmittance, this index is also very important, because the conditions under which the sun umbrella is used are under strong light, then the human eye's feelings are very important.
A sunshade with a high light transmittance will make you feel that the sun is still very glaring, but a sun umbrella with a low light transmittance will make people feel that there is no strong sunlight, which is corresponding to the subjective feeling of the person, and the light transmittance is not good. There is no relationship with UV resistance.
Then let's talk about the connection between the two. How do you choose the sun protection function based on these two points?
UV protection is mainly related to the manufacturing process of umbrella fabrics and fabrics. Generally speaking, after reading the article above, you may know that TC cotton and silver tape have the best sun protection effect, but there are advantages in the world. Disadvantages, cotton cloth is UV resistant but not waterproof. If it suddenly touches the rain, it will be troublesome, and the cotton umbrella is not easy to clean. Once it is dirty, cleaning will be a very troublesome thing.
Silver adhesive tape depends on the silver plating process. Now there are two ways of brushing silver and steaming silver. Steaming silver is to use high-temperature steam to steam the silver glue, which is more uniform, but even if it is silver glue, it is divided into two layers of silver. And four layers of silver, of course, everyone will know at a glance, the four-layer silver sunscreen effect must be higher than two layers. The contrast between the two is easy and can be distinguished by the naked eye.
However, the biggest disadvantage of silver tape is that it is off-silver. The umbrella takes a long time. The silver glue in the fold will always fall off. Generally speaking, the high-quality umbrella silver glue is very good. It will only be used for a long time. a little bit.
But the inferior umbrella will not work, and some will fall off when it hits the rain. Then we will look at an umbrella with multiple colors when choosing an umbrella, then the same umbrella fabric, different colors are also different, this time we must use the light transmittance, the higher the light transmittance, the inside of the umbrella The more glare the light will be, the hotter the feeling will be. The lower the light transmittance, the cooler the human feeling will be. The dark color of the umbrella is low, and the light color of the umbrella is high.
How about, I read the above description of which sunshade effect is good, and I have learned a lot about the sunscreen effect of a lot of umbrellas. I hope that you can learn more about home improvement knowledge through this article, and you will be able to create a more perfect home environment. Thank you for reading this article and your support and love for Xiaobian. If you want to get more information about home improvement, please continue to pay attention to the decoration home network.
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