Why can't disposable paper bowls hold hot soup?

The main reasons why disposable paper bowls are not recommended for storing hot soup are as follows:

Material issue: In order to achieve a waterproof effect, the inner wall of disposable paper bowls is often coated with a layer of polyethylene waterproof film. Although polyethylene is one of the safest chemicals in food processing, it may oxidize in high temperature environments, producing carbonyl compounds that are harmful to the human body. These compounds are not easily volatile at room temperature, but may evaporate when poured into a paper bowl with hot water, affecting human health.

Processing process: Some workshops may use substandard materials or processing techniques for disposable paper bowls, resulting in harmful substances such as fluorescent whitening agents and talcum powder in the paper bowls. These substances may precipitate more easily at high temperatures, posing a potential threat to human health.

Risk of use: If the quality of disposable paper bowls is not up to standard or they are used improperly (such as storing high-temperature food for a long time), there may be risks of water leakage, deformation, etc., which further affect the user experience and food safety.

In summary, in order to ensure food safety and human health, it is recommended to use tableware specifically designed to hold high-temperature food, such as ceramic bowls, glass bowls, or plastic bowls labeled with high-temperature resistance signs.