The sun in midsummer seemed to be dipped in chilli water, and there was no shade on the street. The girls were busy holding up parasols, many of which were vinyl umbrellas. Many merchants also claim that the effect of this umbrella is much better than that of silver-coated umbrellas, which can block 99.9% of ultraviolet rays. The price of the umbrella ranges from tens of yuan to thousands of yuan. Is it really so effective?
Many vinyl umbrellas are "Li Gui"
In Songxia Town, Shangyu District, Shaoxing, known as "China Umbrella City", more than 1,600 umbrella manufacturers have gathered, and many of their products are exported to Japan, Europe and the United States. Tianwei Rain Gear, which started in 1993 as a small workshop, has now developed into a vice president unit of China Umbrella Industry Association, which can be said to have witnessed the development of the industry.
"The real black plastic umbrella is made of PG cloth, which is a first-class UV-proof umbrella cloth. The umbrella cloth is thick, the price is high, and the UV protection effect is good." Said Ding Wei, director of the office of Zhejiang Tianwei Rain Gear Co., Ltd. Many black plastic umbrellas on the market are made of black plastic cloth and affixed with famous brands, but they are actually fake umbrellas produced by small workshops, which are difficult for ordinary consumers to distinguish.
Although the sun protection index of the vinyl umbrella is relatively high, it basically cannot reach the 99.9% declared by the store. He also revealed that the really well-made black plastic umbrella grid costs two to three hundred yuan. But it's not that the higher the price, the better the sun protection effect. Umbrellas higher than 500 yuan belong to an inflated price.
Vinyl umbrella wins in material and color
Huang Jinfei, director of the Light Industry Center of the Zhejiang Furniture and Hardware Research Institute, said that the coating on the surface of a good-quality sunscreen umbrella is not easy to fall off, but there should not be a white or silver coating on the inside of the umbrella surface, which will reflect the ground to the umbrella The ultraviolet rays on the inside are refracted and collected on the user's face, reducing the sun protection effect. Therefore, products with dark coatings such as black on the inner coating have a better effect. In addition, due to the wavelength relationship, the black umbrella is more resistant to ultraviolet light.
The relevant person in charge of the Provincial Quality Supervision Bureau suggested that when choosing a sun umbrella, the ultraviolet performance of the umbrella with obvious sparse fabric is generally poor, and the protection level standard should be carefully looked at.
The fabric structure, raw materials and UV protection performance are also related. The UV protection performance is best with satin weave fabric, followed by twill and plain weave; from the raw materials, polyester fabric is better than cotton, silk, nylon, viscose and other UV protection properties.
Don't use a sun umbrella as an umbrella
"The contact gap of the sun umbrella is large, and if you make an umbrella at the same time, it may leak over time." Ding Wei said that there is a layer of sunscreen coating on the outside of the sun umbrella, which will gradually fade due to the rain wash. It is recommended not to use the sun umbrella. For umbrellas.
The best way to wash the sun umbrella is to wash it with clean water, not with a brush. Try not to get water on the umbrella stand to avoid the umbrella stand rusting. After the umbrella is splashed with mud, dry it with a soft brush to remove the mud. The cloth umbrella and silk cloth umbrella should be washed with alcohol solution or diluted detergent solution, then washed with water and dried. The silk umbrella cannot be stretched out for scrubbing, otherwise it will break easily after drying.
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