foam lunch boxes can't be heated in the microwave oven.

The reasons are as follows:

1. The foam snack box will melt during the heating process, which will affect the food heating.

2. The foam snack box will release toxic substances during heating, which is harmful to human body.

3. If a microwave oven has heated the foam snack box, the microwave oven can hardly be used any more.

Harm of foam lunch boxes Disposable foamed plastic lunch boxes and plastic bags containing food seriously affect our health. When the temperature reaches 65℃, harmful substances in disposable foamed plastic tableware will penetrate into food, which will cause damage to human liver, kidney and central nervous system. In China, almost all the ultra-thin plastic bags we use come from the reuse of waste plastics, which are produced by small enterprises or family workshops. The raw materials used in these factories are discarded plastic barrels, pots and disposable syringes. In production, the raw materials are first crushed into plastic particles by machinery, then the plastic particles are washed in a pool (called disinfection), taken out and dried, and then pressed into films by machinery to make various plastic bags. Every time we eat, many people pack food in plastic bags, which not only harms the environment, but also harms their own health.