Emergency blanket

With the rise of outdoor sports, and the frequency of accidents, there is one piece of equipment that has been overlooked: the first aid blanket.

 

Emergency blankets are used internationally for mountaineering, fire fighting, rescue and military purposes. Actually very simple, be a film that aluminous model is compound commonly, its weight is very light, also be about ten grams. Then someone asked, how much use could such a light object have?

 

Let's first look at the application range and principle of the first aid blanket. First aid blankets are mainly used in cold places. The purpose is to prevent human body hypothermia and hypothermia resulting in death. Therefore, it is common to use first aid blankets to cover the body after being rescued after falling into the snow mountain in an emergency. Some people will ask, just said that is a composite film, how can you keep warm? Now let's look at how warmth works.

 

There are mainly two ways to keep warm. One is to build a house insulation layer. The insulation layer is usually made of some fluffy materials. And the air itself is a bad conductor of heat, so can play a certain warming effect, general down, cotton and so on are used to warm. The second way is thermal reflection. Heat radiation is reflected back using highly reflective materials. We all know that white clothing is cooler than black clothing simply because white reflection is stronger than black and reflects sunlight back. The first aid blanket is a combination of these two principles. One function of aluminum plastic film is to ensure a layer of air on the surface of the human body is stable and not flowing. Its most important role is that aluminum is a highly reflective material, which can reflect back the thermal radiation emitted by the human body, and its thermal reflection efficiency is over 90%. This effectively reduces the speed at which the body dissipates heat. Since aluminum is a metal, it is easy to tear and has low strength. Therefore, the composite plastic film is mainly used to increase the toughness and strength of the first aid blanket.

 

Usually the blanket is about two meters long and wide, so that it can completely cover the body. There are also emergency blankets that look like an envelope sleeping bag and that you can just put people in when the time is right. The folded blanket is half the size of a palm and only a few millimeters thick. I don't think there's any trouble with having such a thing in my bag. The price that imports probably is in 100 yuan or so, and homebred also is 20 yuan, such thing is very simple actually, do not have what science and technology content and craft requirement. To put it simply, it's a large sheet of sweet paper. So domestic is enough.

 

What is the use of emergency blankets when we exercise outdoors? It goes without saying that the use of climbing snow mountains is a must and must be carried. And the average outdoors should actually have one. When going out in the winter, when the weather changes and the sleeping bag is not hot enough, you can put the first aid blanket in the tent on the one hand. Another option is to use the emergency blanket, which is included outside the sleeping bag, to give you a good night's sleep. In the summer, if you fall into the water or get soaked in a rainstorm, the benefit of the blanket is that even if it is completely soaked, as long as you open it and shake it off, it will not affect the warmth effect at all. When it rains, it can be used to set up temporary tents or temporary ponchos. And whether it's winter or summer, the emergency blanket is your sleeping bag when you need to spend the night in the mountains without any equipment. Can provide more security for life.

 

Such things, though unremarkable, can be of such great use at the critical moment. Each one of us should prepare one more for our life, so that we can enjoy the wonderful time outdoors more happily