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Yangzhou Rongjia Headwear Co.,Ltd.

ADD: Ji'an Road Chahe Twon, Yangzhou City, Jiangsu Province, China

FAX:+86-514-87841220

Tel:+86-514-87845978

Phone: +8613705273576

E-mail: yuanqin@rongjiacaps.cn

Website: www.rongjiacap.com

Zip Code: 225127

Sun Hat Of The UV

Yangzhou Rongjia Headwear Co.,Ltd | Updated: Jun 27, 2017

Sun hat uv is the abbreviation of ultraviolet, English full name for the ultraviolet, ultraviolet wavelength: 10-400nm.

Sun hat: wavelength segment

Sun hat: UVA wavelength of 320-390nm, also known as long-wave black spots effect of ultraviolet light. It has a strong penetration, can penetrate most of the transparent glass and plastic. More than 98% of the long-wave UV rays in sunlight can penetrate the ozone layer and clouds to reach the surface of the earth. UVA can reach the dermis of the skin, destroying the elastic fibers and collagen fibers, and tanning our skin. UVA UV wavelengths at 360 nm may be consistent with the phototaxis curve of insects, and further study by scientists. 300-420nm wavelength UVA UV can be completely cut off through the visible light of special stained glass lamp, only radiation to 365nm as the center of the near ultraviolet light, can be used for ore identification, stage decoration, banknote and other places.

Sun hat: UVB wavelength at 280-320nm, also known as the erythrocyte effect of ultraviolet light. Medium penetration, its shorter wavelengths will be absorbed by the transparent glass, the sun contains most of the ultraviolet absorption by the ozone layer, only less than 2% can reach the Earth's surface, in the summer and afternoon will be particularly strong. UVB UV has a erythema effect on the human body, can promote the body's mineral metabolism and the formation of vitamin D, but long-term or excessive exposure will make the skin tan, and cause swelling and peeling. UV light lamp, plant growth lamp is issued using special violet glass (not through the 254nm below) and the peak in the vicinity of 300nm made of fluorescent powder.

Sun hat: UVC wavelength below 280nm, also known as short-wave sterilization UV. It is the weakest penetration, can not penetrate most of the transparent glass and plastic. The shortwave ultraviolet light contained in sunlight is almost completely absorbed by the ozone layer. Short-wave ultraviolet radiation on the human body a lot of short exposure to burn the skin, long-term or high-intensity irradiation can also cause skin cancer. UV germicidal lamp is issued by UVC shortwave ultraviolet.

Sun hat: UVD band, wavelength 100 ~ 200nm, also known as vacuum ultraviolet.

Sun hat: UVV wavelength above 390nm.