Can paper cups be heated by microwave?

When using the microwave oven rack for heating, it should be noted that containers such as metal lunch boxes, stainless steel lunch boxes, aluminum lunch boxes and iron lunch boxes are not suitable for heating in the microwave oven. Can paper cups be heated by microwave?

1 Can paper cups be heated in the microwave? Disposable paper cups are generally not recommended to be heated in a microwave oven, because some disposable cups are coated with polyethylene instead of PE, which will produce harmful components when heated. And paper cups are not resistant to high temperatures. If the paper cup milk tea is directly heated in the microwave oven, the paper cup is flammable and the milk tea is easy to leak out. Therefore, like paper cups and convenient tissue boxes, try not to heat them in a microwave oven to avoid accidents. 2 which containers can't be heated by microwave oven 1. Ordinary plastic container: use special microwave utensils to hold food and put it in the microwave oven for heating. First of all, hot food will deform plastic containers. Second, ordinary plastics will release toxic substances, pollute food and endanger human health. 2. Metal utensils: Because there are iron, aluminum, stainless steel, enamel and other utensils in the furnace, electric sparks will be generated when the microwave oven is heated, which will not only damage the furnace body, but also heat the uncooked food. 3. Closed container: wide-mouth container should be used when heating liquid, because the heat generated by food heating in closed container is not easy to dissipate, so that the pressure in the container is too high and it is easy to cause explosion accidents. Even if you use shells to cook food, you should pierce the shells with needles or chopsticks in advance to avoid bursting after heating, splashing out to pollute the furnace wall or injuring people. 3 Which containers can be heated in the microwave oven 1? Glass microwave lunch boxes mainly include borosilicate glass, microcrystalline glass, titanium oxide crystal glass and other materials. Glass microwave lunch box is suitable for long-term use in microwave ovens because of its good microwave penetration, stable physical and chemical properties and high temperature resistance (up to 500 degrees Celsius or even 1000 degrees Celsius). 2. Ceramic microwave lunch boxes are generally divided into heat-resistant ceramics and ordinary ceramics. Pots, plates and other utensils made of heat-resistant ceramics are suitable for long-term use in microwave ovens, while ordinary ceramic utensils can only be used for short-term heating. It is particularly important to note that ceramic utensils containing gold and silver wires will generate sparks when used in microwave ovens, and it is recommended not to use them. 3. Plastic microwave lunch box Various utensils made of polypropylene, polypropylene resin, composite polypropylene, polysulfone and other materials can be heated in a microwave oven with a temperature resistance above 120 degrees Celsius. Containers made of PET resin and polyester materials can withstand temperatures above 220 degrees Celsius and can also be used for barbecue. In wet state, it can be used in microwave oven for a short time. But if it takes a long time, the drying of the utensils will lead to overheating. These painted utensils are forbidden to be used in the microwave oven, because there is benzene in the paint, which will be emitted by microwave heating and pollute the food. Therefore, in order to be safe and healthy, it is best to choose a microwave lunch box made of glass or ceramic.