aluminum foil's thermal insulation effect

Would wrapping aluminum foil around a hot or cold beverage help it retain its temperature longer?

In fact, aluminum foil is not the best thermal insulation effect because of the good thermal conductivity of aluminum. However, in common food packaging, the thermal insulation effect of aluminum foil must be stronger than that of paper or plastic packaging, so the thermal insulation performance of aluminum foil packaging is better in comparison.

If you want to retain the temperature of the hot beverage, you might as well utilize some material with worse heat conductivity.

Application:

Aluminum foil is used to wrap the outside of the steam duct to prevent temperature loss outward. Non-conductive foil tape use and description: instead of enameled wire, all kinds of variable voltage shielding. In addition, aluminum foil is widely used in refrigerators, air withers, automobiles, petrochemicals, bridges, hotels, electronics and other industries. It can be used in PDA, PDP, LCD display, laptop, copiers and other electronic products that require electromagnetic shielding.