Plastic lunch boxes are lightweight and easy to carry, making them a spare part for many students and office workers to carry their lunches. Some people think that plastic lunch boxes are simply containers for storing food, and when purchasing and using them, they are very casual. In fact, there are many things to pay attention to when using disposable lunch boxes.
1. Brush clean before use.
Plastic lunch boxes will have some plastic smell when used once, so be sure to clean them before using them.
2. Avoid using plastic lunch boxes to heat high-fat foods
Because the boiling point of oil is very high, it will easily exceed the bottom line of plastic heat resistance when heated. Moreover, oil, sugar and plasticizers are all organic substances and can be dissolved in each other. Therefore, it is better to avoid using plastic boxes to heat foods containing a lot of fat and sugar. , to avoid producing harmful substances and endangering human health.
3. Choose plastic lunch boxes with good quality and safety markings
High-quality plastic lunch boxes are relatively hard to pinch and have complete safety labels, including production raw materials, date, place of origin, usage precautions, etc.; inferior plastic lunch boxes become soft when pinched and contain incomplete information, so pay special attention when purchasing.
4. Change lunch boxes regularly
Plastic lunch boxes are often exposed to heat and sunlight, which can easily damage the plastic molecules and make the plastic fragile and aging. If you find that the plastic box has hardened, changed from transparent to atomized, etc., it should be replaced in time. If you hold hot food, porridge or use it in a microwave oven, more harmful substances will be released.
5. Microwave heated plastic lunch box with lid open
Opening the lid and heating can prevent toxic substances in the lid from being released by heat. At the same time, if toxic substances are released from the box body, opening the lid and heating can release the toxic substances into the air. Therefore, when putting a plastic lunch box in the microwave, try not to cover it.
6. Use a special plastic lunch box for microwave heating
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 high temperature, so that it will be better to use. Otherwise, some heat-resistant lunch boxes will release plasticizer when exposed to high temperatures, endangering people's health. At present, the more heat-resistant one is polypropylene, which can withstand 140°C, followed by polyethylene, which can withstand 110°C, while polystyrene can only withstand heat to 90°C. The heat of a microwave oven can reach more than 120°C, so try to choose polypropylene. plastic lunch box.
