Plastic lunch boxes are light and easy to carry. They are the supplies for many students and office workers to carry lunches. Some people think that plastic lunch boxes are simply containers for food. They are very casual when buying and using them. In fact, there are many disposable lunch boxes. Places need attention.

1. Wash it clean before using it once.

When the plastic lunch box is used once, there will be some plastic smell, so it must be cleaned and reused.

2. Avoid using plastic lunch boxes to heat high-oil foods.

Because the boiling point of oil is very high, it is easy to exceed the plastic heat-resistant bottom line when heated. Moreover, oil, sugar and plasticizer are all organic substances and can be mixed together. Therefore, it is better to avoid using plastic boxes to heat foods containing a lot of oil and sugar. , so as not to produce harmful substances and endanger human health.

3. Choose plastic lunch boxes with good quality and safety signs.

High-quality plastic lunch boxes are hard to pinch, and have complete safety labels, raw materials, dates, places of origin, and precautions for use. .

4. Replace the lunch box regularly.

Plastic lunch boxes are often heated and exposed to the sun, which easily destroys plastic molecules, making plastics fragile and aging. If you serve hot food porridge or put it in the microwave oven, it will release more harmful substances.

5. Microwave the plastic lunch box and open the lid.

Opening the lid and heating can prevent the toxic substances in the lid from being released by heat. At the same time, if the box body also releases toxic substances, opening the lid and heating can release the toxic substances into the air. Therefore, when putting plastic lunch boxes in the microwave oven, try not to cover them.

6. Microwave heating requires the use of special plastic lunch boxes

When you want to use a microwave oven to heat a plastic lunch box, try to use a plastic lunch box specially designed for microwave ovens, and then carefully check how many degrees Celsius the lunch box can withstand at high temperature, so that it will be better to use. Otherwise, some heat-labile lunch boxes will release plasticizers and endanger human health when encountering high temperatures. At present, polypropylene can withstand 140 °C, followed by polyethylene, which can withstand 110 °C, while polystyrene can only be heat-resistant to 90 °C, and the heat of microwave ovens can reach above 120 °C, so try to choose polypropylene. plastic lunch box.