Some of the takeaway boxes can be heated directly in the microwave, but it depends on the material. The bottom of the box with pp5 can be directly put in the microwave heating, other materials can not.

Generally speaking, most of the boxes used for takeout are plastic and paper boxes, plastic to be printed on the bottom of the pp5, only belong to the safety of the heating material, other materials are not recommended for microwave heating.

The common takeaway packing boxes on the market mainly use three kinds of materials, respectively, No. 1, No. 5 and No. 6:

No. 1 polyethylene terephthalate (PET): plastic bottles of mineral water, fruit juices, carbonated beverages are made of it.

5 polypropylene (PP): the best heat resistance, you can microwave the plastic utensils are often used to heat it.

6 polystyrene (PS): now a lot of milk tea cup cover with it.

Packing food is safe, but that doesn't mean it's safe to heat. Among these plastic packing boxes, only No. 5 plastic polypropylene (PP) can go into the microwave. Polypropylene is more heat-resistant, can withstand high temperatures of about 200 degrees, so it can be microwaved, repeated heating will not be a big problem. Other plastics are much less heat-resistant, it is best not to directly heat, and do not load too hot food, of course, can not be used repeatedly.