There are many kinds of materials and types of disposable lunch boxes, but a question that everyone is more concerned about is - what kind of plastic products are suitable for heating in microwave ovens?

In fact, if you want to solve this problem, you must first understand these plastic products. In fact, plastic products have 7 types of plastic codes. We usually see three arrows in the middle of the triangle representing the cycle, plus numbers. The logo attaches a triangular recycling mark to plastic products, and uses numbers 1 to 7 and English abbreviations to refer to the type of plastic used in the plastic.

Disposable lunch box

No. 1 plastic can withstand high temperature of 70 ℃, which is more suitable for mineral water bottles; No. 2 plastic is mainly used for food packaging bags. Among the 7 types, only No. 5 is the only one that can be heated in a microwave oven, and its composition is polypropylene, which can withstand high temperatures of 130°C. Therefore, when citizens choose plastic products, as long as they see the "5" logo in the bottom triangle, such plastic products can be heated in a microwave oven, but they still need to choose plastic products from big brands.

Another point, if there is no such mark on the lid of the plastic product, be sure to remove the lid when heating. When cleaning such plastics, do not use sharp objects such as steel balls, so as not to scratch the surface of the plastic, and there will be harmful substances spilled during the next heating.