Can Plastic Packaging Boxes Be Heated in Hot Water?

1. Some are okay, some are not. Because plastic lunch boxes made of different materials have different temperature resistances.
2. The most heat-resistant one is polypropylene (PP), which can withstand 140°C, followed by polyethylene (PE), which can withstand heat up to 110°C, and polystyrene (PS), which can only withstand heat up to 90°C. The plastic lunch boxes for microwave ovens currently on the market are mainly made of PP or PE. If the temperature exceeds their heat resistance limit, the plasticizer may be released, so you should avoid using high-temperature plastic lunch boxes to reheat food for a long time.
3. It is best not to scald disposable plastic lunch boxes with boiling water. The plasticizer in disposable plastic bowls and cups easily melts and releases when exposed to heat, and long-term use is harmful to your health. Plasticizers can interfere with the human body's endocrine system, especially the male reproductive system. Plastic containers with the PET logo may precipitate plasticizer when heated above 70°C; materials that do not meet PET standards may precipitate at a lower temperature.