A brief introduction of Takeaway box
The current disposable fast food packaging boxes mainly include PP polypropylene and PS polystyrene. Both are non-toxic, tasteless and odorless. PP is relatively soft.
Generally, the use temperature of PP is -6°C to +120°C, so it is especially suitable. It can be heated in a microwave oven, or even steamed in a steam cabinet. The temperature of modified PP can be controlled from -18 degrees to +110 degrees. The lunch box made of this kind of PP can be heated to It can be stored in the refrigerator and used for refrigeration outside of 100 degrees.
PS is hard and transparent, but it is easy to tear. PS starts to soften when the temperature reaches 75 degrees, so it is not suitable for holding hot meals and dishes. However, PS has good low temperature performance and is the best packaging material for ice cream.
In order to reduce costs, some lunch boxes 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. However, consumers of this design must understand the difference between the two materials. The difference, remember not to heat the whole box of lunch with the lid in the microwave.