What is the principle of an insulated lunch box?

Speaking of the insulated lunch box, our biggest impression of it is probably that it appears in our daily life as a container with lunch during work and school. Is the performance of the insulated lunch box really so strong? How does it achieve long-term insulation? So today I will introduce in detail, what is the principle of the insulated lunch box? How does it achieve such a good insulation effect.

First of all, let me talk about the principle of the insulated lunch box. The principle of the insulated lunch box actually uses the principle of vacuum insulation. The principle is not difficult to understand. That is, a vacuum layer is added to the double-layer stainless steel to form a vacuum insulated space. In the vacuum layer, the pressure of the gas will be reduced, which will also lead to a decrease in the gas density and an increase in the mean free path of gas molecules. . At this time, the frequency and intensity of collisions between gas molecules and between gas molecules and the container wall will be relatively weakened. As a result, the heat transfer effect is reduced, and long-term high-efficiency heat preservation can be achieved.

Well, after we have figured out the basic heat preservation principle, let’s take a look at how the heat preservation lunch box can achieve the heat preservation effect. Let’s take a look at how its excellent results are achieved.

In addition to the principle, another reason is the process of the thermal insulation lunch box. At present, the thermal insulation technology used by each thermal insulation lunch box brand is different, and the effect is different. For example, the microwave copper plating process, although this process is one of the many thermal insulation processes , But this process is also the most effective way for continuous heat preservation. Microwave copper plating is copper plating on the inner wall of the thermal insulation lunch box, which is equivalent to forming an effective thermal insulation layer in the inner wall, allowing the copper-plated surface to reflect heat radiation, thereby effectively reducing the entry of external cold air and reducing heat loss , So that it forms a thermal cycle inside.

With the help of healthy principles and advanced technology, the heat preservation time of modern heat preservation lunch boxes can easily reach more than 12 hours while keeping the internal meals above 55°C. In this way, even people living in Antarctica can still eat warm and delicious meals, not to mention us living in a livable zone. With the development of thermal insulation technology, our lives will inevitably become healthier.