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security Emergency Blanket Portable lifesaving Survival Bl trust Silver

Emergency Blanket Portable lifesaving Blanket Silver Survival Bl

$8

Emergency Blanket Portable lifesaving Blanket Silver Survival Bl

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Product description

Item Package Quantity:15

First aid blankets are widely used internationally in mountaineering, fire fighting and rescue. In fact, it is very simple, usually a piece of aluminum-plastic composite film, its weight is very light, only about ten grams. Then someone asked, how useful is such a light thing?   Let’s take a look at the application scope and principle of emergency blanket first. First aid blankets are mainly used in cold places to prevent human body from hypothermia and loss of temperature leading to death. Therefore, it is common to cover the body with first aid blankets after being rescued after falling into the water in an emergency. When you see this, some people will ask, how can you keep warm because it is a layer of composite film? Next we look at the principle of keeping warm.    There are two main ways to keep warm. One way is to add a home warm layer. The warm layer is generally some fluffy material. The air mixed with fluffy is used to form a non-flowing air layer on the surface of the object. The air itself is a poor conductor of heat, so it can play a role in keeping warm. General down, cotton, etc. use this method to keep warm. The second way is heat-reflective heat preservation. Use highly reflective materials to reflect heat radiation back. We all know that white clothes are cooler than black clothes, because white reflection is stronger than black, and it can reflect sunlight back. The first aid blanket combines these two principles. One of the functions of the aluminum film in the aluminum-plastic film is to ensure that the air on the surface of the human body is stable and not flowing. Its main function is that aluminum is a highly reflective material that can reflect back the heat radiation emitted by the human body. Its heat reflection efficiency is as high as 90%. the above. This effectively reduces the heat dissipation speed of the human body. Because aluminum is a metal, it is relatively easy to tear, and its strength is not high. Therefore, the main purpos

Emergency Blanket Portable lifesaving Blanket Silver Survival Bl