Skin diseases such as heat rash, erythema, and boil swelling are prone to skin diseases such as heat rash, erythema and boil swelling after being damaged by ultraviolet rays. Choosing to use an umbrella to protect against ultraviolet rays is a very effective method. Faced with parasols with anti-ultraviolet function, which are priced from RMB 20, RMB 30 to RMB 400,500 on the market, how should consumers choose? The more expensive the price, the better the anti-ultraviolet function?
Principle of UV protection
In recent years, due to the destruction of the ozone layer, more and more radiation reaches the ground. Excessive ultraviolet rays can cause certain damage to human skin, eyes and immune system. Therefore, the anti-ultraviolet properties of textiles have been paid more and more attention. More and more anti-UV products appear on the market, and their performance can directly affect the interests of consumers.
1 The principle of UV protection for vinyl umbrellas is that when ultraviolet rays are irradiated on the fabric, part of it will be absorbed, some will penetrate the fibers of the fabric (including through the gaps of the fabric), and the rest will be reflected. The more ultraviolet rays that penetrate the fabric, the greater the damage to the human body. Therefore, the main way to improve the anti-ultraviolet performance is to enhance the fabric’s ability to absorb and reflect ultraviolet rays, thereby reducing its transmission. There are usually three methods:
1. Coating on the surface of the fabric
2. Infiltrate anti-ultraviolet additives into the fabric
3. Perform anti-ultraviolet bleaching and dyeing of the fabric.