Generally, the service life of plastic lunch boxes is about 3-5 years.
After a long time of use, plastic products will appear aging, brittle and other phenomena, indicating the shelf life is to ensure that the plastic products can play a better performance.
If it's not a disposable plastic lunch box, it can be used repeatedly, but it can't be used only once. It depends on the environment in which it is used. Plastic products have a shelf life. You can pay attention to the product description;
It's not that the plastic lunch box with a shelf life can't be used. As long as it is used in the temperature environment marked on the instruction manual, it won't decompose toxic substances, and it won't harm human health. It's just that the physical properties of the product will be degraded, which will affect the function and use of the product. Therefore, it's better not to use expired plastic tableware.
The preservation of disposable foamed plastic tableware should consider the issue of fire prevention, and it should be clearly stated in the product packaging instructions. In addition, polystyrene has poor heat resistance, and it will deform and release harmful low molecular substances when the temperature exceeds 70 ℃.
When cleaning the plastic lunch box, use a soft sponge instead of a hard bowl cloth, so as to avoid scratches and discoloration of the plastic lunch box. When cleaning the silicone liner between the lid and the container, please do not pull it with force, otherwise it will break or lengthen.
