Protective effect of protective glasses and protective mask
Protective glasses and protective eye and face protective masks mainly from ultraviolet , infrared and microwave electromagnetic radiation , dust , soot, metals and chemical solutions sputtering gravel and debris damage .
( 1 ) protective glasses commonly made of flexible plastic and rubber , box large enough to cover the user's eyes .
Anti solid debris protective glasses, mainly for defense and other metal debris or gravel mechanical damage to the eyes . Glasses and eyeglass frames should be rugged , anti- shock. Cover fitted around the edge of the frame , on which there should be vents. Protective lenses can be used tempered glass, glass or copper mesh glial adhesion goggles .
Anti- chemical solution HENGDA fire goggles, mainly for defense irritation or solution corrosive chemical damage to the eyes . Can use an ordinary plain lenses , frames should be covered to prevent splashing into the solution .
Radiation protection glasses, too strong for defensive ultraviolet radiation damage to the eye. Lenses using radiation can be reflected or absorbed , but it can be made visible through a special glass. Lens bright chromium plated , nickel , mercury or silver metal thin film can be reflected radiation ; infrared absorbing blue lens , green lens absorb ultraviolet and infrared, colorless lenses absorb lead X -rays and γ -rays .
( 2 ) HENGDA flash hood are the following :
The end of the anti- bodies and debris chemical solution splashed into eyes and face mask facial injuries , plastics, and the lower sides with a light overlay of transparent plastic production , the use of polycarbonate were under the ears and neck extending toward the lower amount , so that the mask more fully coated face to enhance the protective effect.
Heat addition heat protective clothing mask mentioned foil mask , the metal can also be single or double mesh made , but the bilayer as well, part of the radiation is blocked and can heat the air. As can be chrome or nickel , can enhance the effect of heat reflection , and to prevent rust .
Metal mesh mask can also be anti-microwave radiation.
Welders mask , with a thickness of cardboard fiber, light , heat , and has good electrical insulating mask.