The function of anti-UV fabric, the principle of UV protection, and the standard of UV protection
Function of anti-UV fabric, principle of UV protection, standard of UV protection
The principle of anti-UV fabric is to use the ultraviolet absorber mixed into the fabric to absorb high-energy ultraviolet rays and convert them into low-energy heat energy or electromagnetic waves with shorter wavelengths, thereby eliminating the harm of ultraviolet rays to the human body and fabrics. The use of ultraviolet reflectors can increase the reflection and scattering of ultraviolet rays by fabrics and prevent them from penetrating the fabric. It has the properties of heatstroke prevention, heat insulation and cool touch.
The unit of ultraviolet sun protection is the UPF value. The method for calculating the UV protection function is; UPF = the small amount of exposure that produces erythema when the skin is not protected/the small amount of exposure that produces erythema when the skin is protected, that is, when you wear this dress, you Can withstand several times the sun exposure time.
It should be noted that national standards stipulate that fabrics with UPF5% cannot be called anti-UV fabric products.
Anti-UV clothing fabrics include cotton, linen, silk, wool, chemical fiber and other fabrics. Some anti-UV fabrics that have been processed with better technology have good absorption of ultraviolet rays in the 180-400nm band (especially UV-A and UV-B). Through conversion, reflection and scattering, the finished fabric is non-toxic, non-irritating to the skin, and the human body will not produce allergic reactions. At the same time, it does not affect the coloration and moisture absorption and breathability of the fabric. Good anti-UV fabrics have good absorption effects on ultraviolet rays in the 100-400cm band, especially UV-A and UV-B. After 50 washes, the ultraviolet transmittance is still less than 1%, and the ultraviolet blocking factor UPF can reach 50 +High level.
Disclaimer:
Disclaimer: Some of the texts, pictures, audios, and videos of some articles published on this site are from the Internet and do not represent the views of this site. The copyrights belong to the original authors. If you find that the information reproduced on this website infringes upon your rights, please contact us and we will change or delete it as soon as possible.
AA
