The material of cooler bag is made of pearl cotton, aluminium foil and other eco material. These material is insulated and thermal. Moreover, this type of material can effectively block the air, so that the temperature in the bag does not dissipate, which greatly keep hot and cold. It is also impact resistance, which is not easy to be damaged by the strong impact force.
If you were to put hot food in a cooler bag and compare that to hot food left out or hot food put in a plastic or paper bag then you would find that the food in the cooler bag will stay hotter for longer. This is because the foil reflects heat back onto the food as the plastic/paper layer of the thermal bag also insulates whatever is inside the bag. Cooler bags don’t have any active heating element they simply do their best to trap whatever heat is in your food and stop it from escaping
General speaking, the cooler bag can keep warm or cold for about 2-3 hours. The environment and weather temperature will influence the using effects.
If it is like our current outdoor temperature, and the temperature during the day is about 30 degrees, so the insulation time of the cooler bag will be a little longer, about 2~3 hours. But if it is used in winter, then It is relatively short, so the holding time is different, about 40 minutes to 1.5 hours.
We use high quality fabrics and lining materials to ensure the most efficient status of cooler bag. You can always trust Precisepackage.
Post time: Apr-25-2022