An isothermal container is a device which is used in transportation and refrigeration applications for thermally perishable products such as fruits, vegetables and fish. The container has a rigid body, and an inside partition with a compartment. This partition can be located at various locations. The inner temperature of the container is determined by the outer container and the thickness of the compartment walls. The internal temperature of the container can be maintained for a length of time depending on the parameters.

The new isothermal container in EPP offers several advantages over existing models. It is economical and durable, and it allows the user to maintain the correct temperature. It also reduces energy consumption. This new model also features an innovative system for accumulation of active/passive heat.

During this study, a series of tests were carried out in order to evaluate the new isothermal container in EPP. The containers were compared with a certified data logger. They were evaluated in accordance with the user's manual, and tested for the temperature coherence coefficient. The results showed excellent thermal resistance.

In addition, the new isothermal container in EPP is equipped with a modulable thermal energy flow generator. This allows the user to adjust the amount of energy being released. This system is very useful for producing energy in a controlled manner.

An isothermal container is composed of a bag of expanded polypropylene, and an interior compartment. The box is fitted with a drain plug. The container can be frozen or used for salting fresh products. It can be used in private homes, restaurants, canteens and food trucks.