Uv-cut fabrics with the fabric is using the principle of uv absorber absorb ultraviolet light, make the high-energy to low energy conversion, low energy into heat or shorter wavelengths, thereby eliminating the electromagnetic wave ultraviolet harm to human body and fabric, use ultraviolet reflex agent can increase the fabric of ultraviolet reflex and scattering function, prevent through the fabric. Summer is cool, thermal insulation, tactility of performance. That is the national standard UPF < 30 +, UVA through rate > 5% of the fabric is not able to uv-cut fabric product called. Uv sunscreen degrees unit is calculated value, Anti-uv UPF function method, UPF = skin protection under the minimum quantity/skin erythema of radiation protection under the red spot, also is the smallest exposure when you wear the dress when you can afford a few times sunlight time. Anti-UV fabric including cotton, hemp, silk, wool and chemical fiber fabric such as well, some sort of Anti-UV fabric craft in 180-400nm band ultraviolet (especially uv-a and UV - B) has good absorption and scattering function transformation, reflected by finishing of fabrics, non-toxic, no stimulation to the skin and body does not produce without allergic reaction, also does not affect the color of fabric with wet absorption performance of steam. Good UV fabrics to 100-400cm band of ultraviolet ray, especially uv-a and UV absorption of good - B, after washing 50 times ultraviolet transmittance still less than 1%, ultraviolet ray also can achieve shade coefficient UPF to 50 + the highest level.
