Meal box performance

Disposable lunch boxes made of plastic are mainly PP polypropylene and PS polystyrene. They are non-toxic, tasteless and odorless. PP is relatively soft. Generally, the temperature of PP is -6 degrees to +120 degrees, so it is special It is suitable for holding hot meals and hot dishes. It can be heated in a microwave oven or even cooked in a steam cabinet. The use temperature of modified PP can be controlled from -18 degrees to +110 degrees. 

The lunch box made of this PP can be heated in addition to It can be stored in the refrigerator to be used for refrigerating after being used at 100 degrees.PS is hard and transparent, but it is easy to tear. PS starts to soften when the use temperature reaches 75 degrees, so it is not suitable for holding hot meals and hot dishes, but PS has good low temperature performance and is the best packaging material for ice cream.

In order to reduce costs, some lunch box factories use PP as the box and PS as the lid. The advantage is that the lid is transparent and the PS is harder. It can be made of thinner materials to reduce costs, but consumers of this design must understand the two materials The difference, don’t put the whole box of lunch together with the lid and heat it in the microwave.