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A thermos bag is an insulated container used to keep temperature-sensitive products cool. These types of bags are most commonly used to safely deliver food and medical vaccines. Insulation in a cooler bag ensures that hot and cold temperatures are maintained during transport of the contents.
To ensure safety, the temperature of many foods must be kept constant. When sensitive or perishable foods are moved from one location to another, an insulated bag is a temporary source of temperature control. For example, pizza delivery bags use insulation to keep food warm so it doesn’t spoil by the time the customer receives it.
Pizza delivery is one of the industries that uses thermal packaging the most. Since delivery drivers may have to locate addresses they are unfamiliar with, the bag’s thermal insulation ensures that customers do not feel dissatisfied with cold food. Insulated bags keep food fresh and give the impression that it has just been removed from the oven or microwave.
The inside of a cooler bag contains insulation, usually in the form of padding made of a metallic material. For food and other items that need to be kept warm, the metal material helps transfer escaping heat back to its source. The quilted and metallic material also retains heat inside the cooler while it remains closed. Thermal insulation is a temporary solution to maintain temperature control and should not be replaced by long-term solutions such as a refrigerator.
In addition to keeping warm, thermal insulation can also keep items cool. Perishable and frozen foods, as well as vaccines, may need to be held at certain temperatures during transportation. Ice packs can be placed in cooler bags to help supplement insulation. An insulated shipping container is a good solution for smaller vaccine or food shipments that only need to travel short distances.
There is another type of cooler bag available for personal use. Some of the lunch boxes or bags available for consumer purchase use thermal insulation. This can be useful for people who want to bring their own lunches to work but don’t have access to a fridge. Delivery drivers who work out of an office and are constantly on the go often find insulated lunch boxes a great convenience.