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Principles and use of emergency blankets

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Have you ever been to the finish line of a marathon? Ever wondered why runners wrap themselves in something like aluminum foil? The blanket helps regulate a runner's body temperature, preventing a rapid drop if they stop exercising.


It's not like the aluminum foil you use for barbecues at the supermarket, but it comes from NASA technology commonly called space blankets, or survival blankets, used by everyone from mountaineers to astronauts to surgeons to help keep people warm.

Why, you might wonder, does something so thin keep you warm? It all starts with space-age technology. By depositing gaseous aluminum onto a plastic film, the makers create a thin, foldable blanket that is thermally reflective, meaning it redirects infrared energy, which is simply heat. Depending on the process, a space blanket can be used to carry heat away (NASA uses it to cool Skylab) or it can be used to preserve heat (runners use it to regulate body temperature), known as a passive heating system.


Survival blankets are an important part of the first aid kit, and insulation is always a top priority for survival expedition environments.


Survival blankets are lightweight, compact when folded, and inexpensive. A typical survival blanket weighs about 85 grams, is about the size of a playing card when folded, and can measure 142 by 213 centimeters when opened.


There are several different types of survival blankets you can find on the market. One is a bold color, usually orange, which is easy for rescue crews to spot, and the other is a tactical shade, usually green.

The purpose of a survival blanket

1. After an accident, the emergency blanket can be used to cover the body to prevent a sharp drop in body temperature;

2. When the vehicle breaks down in a cold zone or at night, the emergency blanket can be used to keep the body warm;

3, the first aid blanket can be used as a reflecting film to send signals to the rescuers;

4, in rainy days, the emergency blanket can be used as a rain poncho; Can be stretched out to make an awning;

5. Parking in direct sunlight in summer, cover the front windshield of the car with an emergency blanket, which can reduce the heat absorption inside the car;

6. Put an emergency blanket in your sleeping bag for great warmth.