If the plastic material of the disposable packaging box is made of PP polypropylene, it can be heated and is non-toxic.
Disposable lunch boxes made of plastic are mainly made of PP polypropylene, which is odorless and soft. The general use temperature of PP is -6 degrees to +120 degrees. It is especially suitable for holding hot meals and hot dishes. It can be heated in a microwave oven. Modified PP Its operating temperature can be controlled from -18 degrees to +110 degrees. In addition to being heated to 100 degrees for use, lunch boxes made of this PP can also be placed in the refrigerator for use.
In order to reduce costs, some lunch box factories use PP for the box and PS for the lid. The advantage is that the lid is transparent and PS is hard and can be made of thinner sheets to reduce costs. However, consumers of this design must understand the two materials. Differences, remember not to heat the entire box of rice with the lid in the microwave.
