What is the role of protective masks and protective glasses?

Protective glasses and face masks protect the eyes and face from the radiation of electromagnetic waves such as ultraviolet rays, infrared rays and microwaves, dust, smoke, metal and gravel debris, and splashes of chemical solutions.
(1) Protective glasses are usually made of flexible plastic and rubber. The frame is large enough to cover the user's eyes.
Anti-smashing safety goggles are mainly used to prevent mechanical damage to the eyes such as metal or gravel debris. Spectacle lenses and spectacle frames should be structurally strong and resistant to impact. Frames are covered around the edges and there should be ventilation holes. Protective glasses can use tempered glass, glue glass or copper mesh protective glasses.
Anti-chemical solution protective glasses are mainly used to prevent chemical damage to the eyes caused by irritating or corrosive solutions. Ordinary flat optics can be used, and the frame should be covered to prevent splashing.
Radiation-protective goggles are used to prevent the damage to eyes caused by radiation such as excessive UV rays. Lenses are made of special glass that reflects or absorbs radiation, but transmits some visible light. The lenses are plated with bright chromium, nickel, mercury or silver metal films that reflect the radiation; blue lenses absorb infrared rays, while yellow-green lenses absorb both ultraviolet and infrared rays. The colorless leaded lenses absorb X-rays and gamma rays.
(2) Protective masks mainly include the following types:
Anti-spot and chemical solution splashed into the eye and face mask damaged, made of lightweight transparent plastic, multi-use plastic such as polycarbonate, the cover on both sides and the lower end of the two ears and the lower forehead of the lower end towards the neck, so that the mask Can cover face more comprehensively to enhance protection.
In addition to aluminum foil face masks for heat protection clothing, heat-resistant masks can also be made of single-layer or double-layer metal meshes, but double-layers are preferred, so that part of the radiation can be blocked and dissipated in the air. If it can be chrome or nickel, it can enhance the anti-heat effect of reflection and prevent rust.
Metal mesh masks also protect against microwave radiation.
The welder uses a face mask made of hard paper fiber with a certain thickness, which is lightweight, heat resistant, and has a good electrical insulating mask.

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