The principle of self-heating hot pot is to use the substances inside the self-heating pack (of which the main ingredients are iron powder, aluminum powder, calcium oxide, coke powder, activated carbon and quicklime, etc.) to have a chemical reaction in contact with the water, and the heat released makes the food inside the ingredient pot absorb the heat and then rise in temperature. Self-heating hot pot is mainly composed of ingredients, ingredient pot, lid, outer pot and heating pack.

Self-heating hot pot safety issues are mainly the following two points:

I. Problems in the heating. Self-heating hot pot in the cooking will exist after holding hot hands, lifting hot face, eat up hot mouth problem. Existing self-heating hot pot packaging can not guarantee that in the transportation process will not come into contact with the material to produce temperature, as well as to ensure that the heating package will not leak powder.

Two, the safety of the ingredients of the problem. The most common self-heating hot pot on the market now is potato, lotus root slices, fungus, Sichuan noodles, quail eggs, bamboo shoots and so on. In the news reports show that most of the self-heating hot pot business, are multi-plant production, and then assembled together, and these production manufacturers environment, food safety are not guaranteed, but also can not trace the roots.

Avoid the occurrence of self-heating hot pot safety hazards, first of all, in the use of the lunch box must first check the lid of the breathable holes are effective, to avoid the steam pressure to make the lunch box expansion or even burst open, resulting in burns. Do not tear the heating pack and add water directly when using, it will cause too violent reaction and risk of scalding. Under the premise of economic conditions allow as far as possible to reliable channels to choose a well-known brand of products, do not be greedy for cheap.