The problems needing pay attention when use of disposable plastic lunch boxes
Takeout has become integrated into our daily life. It can be eaten in the microwave for a few minutes, which is convenient and saves time. Many office workers and students are the main people who use disposable plastic lunch boxes.
- Food should be put into disposable plastic packaging box at low temperature
If you go to a restaurant to takeout, it is recommended to pack it after the meal is a little cold, so as to avoid the dissolution of harmful substances in the lunch box caused by high temperature. Because we don't know what material the restaurant's plastic packing box is made of. If it is made of PP, its advantages of high temperature resistance, tasteless and non-toxic don't need to be worried; If it is PS material with poor high temperature resistance, and it can not be put into the microwave oven, also can not be used to contain strong acid and strong alkaline substances, which will decompose polystyrene which is bad for human body.
- Avoid high temperature heating
Do not reheat food in a microwave oven with a disposable lunch box unless there is a clear mark on the lunch box that can be used in the microwave oven. It also involves the material of lunch boxes. Except material of PP, all packing boxes of other materials cannot be heated in the microwave oven.
- Do not used foamed disposable tableware
Compared with wooden fiber and other plastic lunch boxes, foamed disposable lunch boxes have a greater hazard index. The foamed lunch box decomposes polystyrene which is bad for human body under the condition of overheating. 
- Avoid oily food
Avoid using inferior plastic boxes to contain foods with a large amount of oil and sugar, because the boiling point of oil is easy to exceed the heat resistance limit of plastic products.
