Studies on Fabrics Shielding Ultraviolet Rays

Part 3: Preventive Effects from Sunburn

Abstract

The authors have investigated preventive effects of the fabrics capable of shielding ultraviolet rays by model tests and actual wearing. The results are as follows:
1) In actual wear, the skin at the back of the human body can be irradiated, through clothes, by 36% estimated from the solar UV-rays and the UV-transmittances of fabrics.
2) Japanese can generally be sunburnt slightly by 20 KJ/m², mildly by 40, and remarkably by 70 of UV-rays through clothes.
3) A fabric, through which UV-rays can transmit by less than 10%, is recommended for wearing under much sunshine.