The Principle Of A Solar Umbrella

Generally speaking, moderate amounts of ultraviolet radiation have bactericidal effects and can promote the synthesis of vitamin D, which is beneficial to human health. However, under continuous exposure to scorching sun, the human skin will lose its ability to resist, prone to burns, redness, or blisters.

The main goal is to reduce its transmission, so that ultraviolet rays are reflected or absorbed as much as possible. There are currently two main methods:

The first method is to make it reflect or scatter. Among them, there are two situations: one is plating a metal film, which belongs to mirror reflection and regular reflection; There is also a type of fabric with a pearlescent effect, such as certain umbrella surfaces, which can scatter ultraviolet rays in the direction of reflection.

The second method is to incorporate ultraviolet absorbing materials into the interior of the fabric fibers, or to perform post finishing after the fabric is completed by infiltrating some ultraviolet absorbing materials, such as nanoscale zinc oxide or titanium dioxide.

The purpose of sun umbrellas

1. Different weights

Compared to umbrellas, the umbrella frame of a sun umbrella is lighter, and some umbrella ribs are made of non-metallic materials.

2. Different materials

The surface and material of the sun umbrella are special, with excellent sun protection function. In addition, it has a strong ability to block ultraviolet rays. Sun umbrellas are primarily designed to reflect solar ultraviolet radiation and provide insulation, while umbrellas are primarily waterproof.

3. Different colors

Umbrellas can be relatively light in color because they cover the rain, while sun umbrellas are generally darker in color, mainly for UV protection.

It can be seen that in order to prevent UV damage to the skin, a sunshade umbrella with UV protection function is usually the choice for people. There are various types of sunshades, and their UV protection effect varies depending on the shading rate of the fabric.