DRAGON
The DRAGON emergency blanket first aid obtained this thin, foldable, and heat-reflective blanket by depositing gaseous aluminum onto a plastic film. Aluminum is a relatively easy metal to tear and has low strength. Therefore, the main purpose of the composite plastic film is to increase the toughness and power of the emergency blanket.
There are two main ways to keep warm; one way is to add a thermal layer: the thermal layer is generally some soft material, and the air mixed with the fluffy air 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 certain role in keeping warm. General down and cotton use this method to keep warm.
The second method is heat reflective warmth: highly reflective materials reflect heat radiation. We all know that white clothes are cooler than black because white reflects stronger than black and can reflect sunlight, and emergency blankets combine these two principles.
The folded emergency blanket first aid is only half the size of a palm and only a few millimeters thick. Packing such a thing in the bag will not be burdensome at all.
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