The insulation and cooling secret of DuPont lunch bags mainly lies in their material and structural design.

DuPont lunch bags usually use pearl cotton and aluminum film as the inner insulation materials, which work together to achieve the insulation and cooling function of the bag. As a type of insulation material, the thickness of pearl cotton directly affects the insulation effect, and the thicker the pearl cotton, the better the insulation effect it provides. Aluminum film plays a role in insulation and reflection, which can further enhance the insulation capacity of the insulation package. In addition, the structural sealing of the bag is also one of the key factors for insulation effect. A structure with better sealing can better maintain temperature and reduce heat loss.

When using DuPont lunch bags, some auxiliary measures can be taken to enhance the insulation effect, such as placing biological ice packs, water filled ice packs, or ice cubes inside the bag. These measures can further reduce the temperature rise inside the bag or slow down the rate of temperature rise, thereby better maintaining the temperature of food or beverages. Especially in the hot summer, this practice is particularly important as it can help prevent food or beverages from spoiling or losing their original taste due to external high temperatures.