Can plastic bottles be heated by microwave? Can plastic bottles be heated by microwave?

1. Some plastic bottles can be heated in a microwave oven. The plastic sign that can put a microwave oven is: the number in the triangle at the bottom of the plastic container is 5. This is the only plastic material PP (polypropylene) that can be heated by microwave oven.

2. Polypropylene is a thermoplastic resin polymerized from propylene. It is a white waxy substance with a transparent and light appearance. Its density is 0.89 ~ 0.9 1g per cubic centimeter, it is flammable, its melting point is 165℃, it softens at about 155℃, its service temperature is -30 ~ 140℃, and it can resist acids, alkalis and acids below 80℃.

3. Polypropylene can be divided into isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene according to the arrangement position of methyl groups. Widely used in the production of fiber products, medical devices, automobiles, transportation pipelines, chemical containers and so on. It is also used for the packaging of food and medicine.