What is the cooling effect of aluminum foil insulation bags?

The cold-keeping effect of the aluminum foil insulation bag is that it can be frozen and kept fresh for a long time, and it is also multi-functional with pressure resistance, impact resistance and moisture resistance, and the appearance design is very beautiful.

3. The aluminum foil package is generally composed of three layers of composite materials. Generally, the aluminum foil can only be placed in the middle. The aluminum foil is a hot stamping material that is directly rolled into a thin sheet of metal aluminum. Its hot stamping effect is similar to that of pure silver foil, so it is also called fake silver. foil. Due to the soft texture, good ductility and silver luster of aluminum foil, if the rolled sheet is mounted on offset paper with sodium silicate and other substances, it can be printed.