A bulletproof helmet is a piece of equipment that can absorb and dissipate the energy of a warhead, prevent penetration, reduce blunt injuries, and effectively protect the human head. It is mainly equipped for troops and combat personnel and police, and is divided into two types: Japanese style and German style.
Bulletproof helmets are divided into three categories according to the material of the helmet shell: metal, non-metal, metal and non-metal composite. The main materials for making bulletproof helmets are ultra-high molecular weight polyethylene fiber and aramid, among which helmets made of ultra-high molecular weight polyethylene fiber are lighter.
Infantry bulletproof helmets can protect against shrapnel and direct bullets, and are generally required to withstand the impact of 9mm caliber pistol projectiles and shrapnel from a distance of 5m.
Bulletproof helmets have multiple protection levels. For example, level 2 protection can prevent the penetration of 1951-style 7.62mm pistol bullets (lead core) fired from domestic 1954-style pistols.
In addition, bulletproof helmets can be used with bulletproof masks. Bulletproof masks can effectively protect the human face without affecting normal observation, further improving protection capabilities.