how to distinguish the advantages and disadvantages of disposable plastic lunch box

At present, most plastic lunch boxes sold on the market are polyethylene and polypropylene products, these two substances can withstand the high temperature of more than 100℃, it is safe to use, consumers should pay attention to whether the product marked PE(polyethylene) and PP(polypropylene) words, the most common "5" represents "polypropylene", that is, "PP" material. The temperature range of this PP material is from -20 degrees to 120 degrees.

How to identify whether PP material is pure? In addition to looking at the brand and related test report, you can also identify by the following methods:

1, smell: if there is a pungent plastic smell or water after the smell, basically you can be sure that there is a problem.

2. Look at the appearance: Compare the similar meal boxes together, the more transparent they are, the more pure they will be.

3, pinch hardness: you can pinch the hardness of the product, too crisp too thin can be eliminated; Check whether the product identification map, identification is clear, whether the plastic box body and box cover have the corresponding material label.