Sun protection principle of parasol.

Parasols are commonly used sun protection tools for people during outdoor activities. They can effectively block sunlight and reduce the damage to the skin caused by ultraviolet rays and thermal radiation. Let’s learn about the sun protection principle of parasols.

1. Block UV rays

The sunshade effect of parasols mainly comes from the materials used. Generally speaking, the materials of parasols are divided into two categories, one is ordinary nylon or polyester materials, and the other is sunshade coating materials specially used for sun protection. No matter which material they are, they all have a certain sun-shading effect and can block some ultraviolet rays from penetrating.

2. Reflect heat radiation

In addition to blocking UV rays, the reflective layer of the parasol also plays an important role. This layer is usually composed of silver or metallic film, which can effectively reflect thermal radiation and reduce the heat caused by sunlight. In this way, you can feel the coolness brought by the parasol even under direct sunlight.