Aluminum Foil Keep The Food Warm by reflecting the food heat energy.
Actually, aluminum food foil has very smooth surface and it has good reflectivity feature.
It can reflect the food heat energy to achieve the heat preservation effect so your food temperature will stay in longer time.
You should note that it is not possible for the aluminum foil itself generate heat energy, it can only maintain the original temperature of food and cannot generate new heat energy for food.
How long does aluminium foil keep food warm
Under normal conditions, a single layer of aluminium foil can maintain food temperature for about 30 minutes to 1 hour.
If you increase the number of aluminium foil layers or use a more efficient insulation method, the insulation time can be extended accordingly.
Using auxiliary materials such as towels or cloth to wrap the outer layer of aluminium foil can also prolong the heat loss time.
In order to have a longer heat insulation time, you can try to avoid exposing the wrap directly to wind or sunlight to reduce heat loss.
Aluminium foil for hot food which side
Aluminum foil will form a shiny side and a matte side during the pressing process, and the two sides have different functions for food packaging.
Whether you are the end user or businessman who wholesale aluminium foil, you need to know these two sides difference for better usage.
The shiny side should face the hot food and the matte side should face the outside, i.e. the food packaging box.
This is because the shiny side is heat-pressed and has a smooth surface, which is not only convenient for contact with food, but also effectively protects the freshness and nutrients of the food and prevents oxidation and contaminants from invading.
You should wrap hot food with this shiny side surface so that the radiant heat from the heated food can be easily reflected back to reduce heat loss to the outside.
The rougher matte side surface of aluminium foil is suitable to face the fire source when heated. As the rough surface has a better heat absorption effect.
Which side of tin foil is non stick
The matte side of aluminum foil is non-stick.
The matte side of aluminum foil has a matte effect, which is achieved by a series of compression and forming rollers during the manufacturing process.
It has a lower reflectivity and is suitable for situations where sticking needs to be prevented, such as packaging foods that are prone to sticking. The matte side provides excellent non-stick performance
Conclusion
Using aluminum foil to heat food is convenient and quick, but you still need to pay attention to the usage and precautions.
When heating food, the shiny side of the aluminum foil should face outward and the food should be close to the heating source to make full use of the thermal insulation and thermal conductivity of the aluminum foil.
