Which lunch boxes can t be put in the microwave?

A microwave oven is a cooking appliance that uses food to absorb microwave energy in the microwave field to heat itself. The microwave generated by the microwave generator in the microwave oven establishes a microwave electric field in the microwave oven cavity, and certain measures are taken to make this microwave electric field distributed as evenly as possible in the furnace cavity.

Plastic lunch boxes with poor heat resistance.

Ordinary plastic lunch boxes have poor heat resistance and cannot be used as microwave cooking utensils. 2.

Metal lunch boxes such as aluminum pots, enamel pots and stainless steel pots that cannot be penetrated by microwaves cannot be penetrated by microwaves, and ignition will occur on the inner wall of the furnace when it touches metal, so they cannot be used. 4.

The lacquer on the lacquerware lunch box may peel off and melt after being heated, resulting in harmful substances, and the container may also crack, and the heated food is not good for your health.

PP stands for polypropylene, which has excellent mechanical and thermal properties and is used in a variety of performance laminates and packaging materials. PS is commonly known as hard rubber, ordinary hard rubber, hard and brittle, when beaten, it makes a metal-like "dingdang" sound, the sound is crisp, commonly known as "ringing glue", non-toxic, tasteless.

These materials are also safe to heat in the microwave oven and will not release toxic substances, it should be noted that the general lunch box is marked whether it is suitable for microwave oven use, and the lid material of some lunch boxes is not PP, so it cannot be heated in the microwave oven, and it is best not to bring a lid when heating the meal.

1. Which lunch boxes should never be put in the microwave:

Metal lunch box. Stainless steel, aluminum lunch boxes, iron lunch boxes, enamel lunch boxes, etc. are not suitable for microwave heating, because the microwave cannot penetrate the metal and when it touches the metal, the inner wall of the furnace will ignite and damage the microwave oven, so it cannot be used.

Glass lunch boxes that are not heat-resistant.

Carved glass, tempered glass, crystal glass, and glassware with gold and silver pink patterns will be ** or crack after heating, so they cannot be used.

Plastic lunch boxes in general.

Plastic lunch boxes are not suitable for heating in the microwave unless they are labeled as heated.

2. Which lunch boxes can be put in the microwave?

Heat-resistant plastic lunch boxes.

Polypropylene plastic (PP) is currently the only plastic that can be heated in the microwave. When we choose a container, we must choose a container with a triangular pattern on the bottom of the container and the words "suitable for microwave ovens". It should be noted that some microwave lunch boxes are made of polypropylene, but the lid is made of polyethylene terephthalate plastic (PET), which cannot be heated in the microwave with the box because PET cannot withstand high temperatures.

Ceramic lunch box. Fine pottery, stoneware, etc. are acceptable, but if the lunch box has cracks, gold and silver powder color patterns, and glaze, it will produce sparks or peeling, so don't put it in the microwave.

Heat-resistant glass lunch box.

Be careful when buying lunch boxes, which are made of heat-resistant materials such as glass-ceramic, borosilicate glass, and ceramic glass, which can be heated for a long time. By the way, those beautiful glass lunch boxes with embossed patterns are better not to be heated in the microwave because of their uneven thickness and poor heat resistance.

Bamboo and wooden lunch boxes.

Cooked food can be heated for a short time, and raw food should not be cooked, as it will be scorched if it is overheated.

Glass bowls, special plastic materials, and ceramic containers can be put into the lunch boxMicrowave.

Not all lunch boxes can be put into the microwave oven to heat, you can observe, there is a corresponding number at the bottom of it or in the lid, if it is No. 5, its heat resistance is better, using PP polyethylene.

The material is more suitable for microwave heating.

Most of the plastic utensils that can be heated in the microwave are made of No. 5 PP, and if they are No. 3 or No. 6, they cannot be heated in the microwave. In general, plastic lunch boxes for packing are safe.

Only plastic lunch boxes marked with the words microwave oven can be heated, and ordinary plastic lunch boxes cannot be heated. Because the material of plastic lunch boxes that can be heated in the microwave oven is generally polypropylene plastic.

Material, this material can generally withstand more than two high temperatures, so it can be placed in the microwave oven for heating, and the material of ordinary plastic lunch boxes generally belongs to PC material, this material is generally not resistant to high temperatures, easy to deform, discoloration, so it is not suitable for heating in the microwave oven.

Precautions for microwaving food:

1. Do not put food in sealed bottles and canned food in the microwave oven (e.g. sealed glass bottles and baby bottles). Feeding bottles and baby food cans should be stirred or shaken, and the temperature of the food in the bottles should be checked before feeding to avoid burns.

2. Do not use the microwave oven to heat fried food.

3. Do not heat raw eggs in the shell.

and eggs with a film, otherwise it will cause **.

4. Potatoes, apples, egg yolks, chestnuts, red sausages.

Foods with skin must be pierced with a fork or knife before cooking to prevent scorching and breaking.

The iron lunch box cannot be used in the microwave. Iron lunch boxes belong to metal lunch boxes, because they do not have the characteristics of being penetrated by microwaves, which will cause the food in them to be unable to be heated, and metal lunch boxes are easy to contact with the inner wall of the microwave oven and produce sparks, so it is not suitable for microwave oven use.

Metal lunch boxes also include various utensils made of aluminum, stainless steel, enamel and other metal materials.

Lunch boxes suitable for microwave heating are ceramic lunch boxes, heat-resistant glass lunch boxes, and heat-resistant plastic lunch boxes.

Utensils that are usually used in microwave ovens need to meet three requirements, the first is strong microwave penetration, the second is high temperature resistance, and the third is to meet food hygiene requirements.

Ordinary lunch boxes can be heated in the microwave, but they are metal lunch boxes and cannot be heated in the microwave. The following lunch boxes cannot be heated in the microwave:

1. Plastic lunch boxes with poor heat resistance. Ordinary plastic lunch boxes have poor heat resistance and cannot be used as microwave cooking utensils.

3. Microwave impenetrable metal lunch boxes. Metal lunch boxes such as aluminum pots, enamel pots and stainless steel pots cannot be penetrated by microwaves, and ignition will occur on the inner wall of the furnace when it touches metal, so they cannot be used.

4. Lunch boxes for lacquerware. The lacquer on the lacquer man's lunch box may peel off and melt after being heated, producing harmful substances, and the container may also crack, and the heated food is not good for health.

Hello, dear, I am inquiring about related matters for you, please wait a moment [smile] Dear, claypot rice can be heated in the microwave.

Dear, casserole claypot rice can be put into the microwave to heat. Safe, fast and hygienic. However, in principle, tin foil claypot rice cannot be heated in the microwave because it will burn during the heating process. [smiles].

Dear, the process of microwave heating will cause a lot of water loss of food, so it is not recommended to microwave any food for a long time [smile].

We hope you find it helpful.

Smile] [smile].

If it is not a special lunch box for microwave ovens, it is best not to put the plastic lunch box into the microwave oven to heat, because plastic will release some harmful substances in the process of heating, which is very bad for our body. And the temperature of the microwave oven is also very high, which may deform the plastic lunch box during the heating process.

After the plastic lunch box is heated in the microwave, it is harmful to the human body. Because the temperature of the microwave oven is also relatively high, in the process of heating, it is possible for the plastic to release some harmful substances due to the high temperature, which is very bad for our body. So if you want to heat up food, you can put the food inside a ceramic bowl and put the ceramic bowl in the microwave to heat it.

Generally speaking, we must be responsible for our own health and cannot ignore health problems. If there is a health problem, then we will not have the energy to work, and we may have to spend a lot of money to go to the hospital, which is also very uncomfortable. Therefore, when we heat the rice, we must put the rice in the ceramic bowl, or directly buy the ceramic lunch box to hold the food, so that the ceramic lunch box can be directly put into the microwave oven to heat.

We must know that plastic is not resistant to high temperatures, and after heating, it will not only release some toxic diocetins but also deform, and such lunch boxes can not be used anymore. If we regularly use a plastic lunch box to eat, and put this lunch box in the microwave to heat the orange, it may cause us cancer, even if we don't get cancer, it will also make our body have some bad conditions, such as making the body's resistance worse and causing problems with our internal organs. Therefore, for the sake of our health, we must eat healthy food, not eat some unhealthy food, and use ceramic or microwave oven special lunch boxes to heat food.

Not all lunch boxes can be put into the microwave oven, for example, the plastic box has a triangular arrow on the outer surface, and there is a PP material engraved with 5 in the frame, which can be put into the microwave oven to heat. As for the plastic disposable rice box, it is not allowed to be put into the microwave, otherwise it will be easy to melt and produce toxic substances.

Disposable plastic lunch boxes are basically heated by hot water or in a steamer to achieve the effect of heating food, but it should be noted that when it is hot, do not cover the lid, the food in the lunch box cannot be heated, and too hot water can not be used, which will melt the lunch box and lead to the production of toxic substances.

Plastic lunch boxes, metal lunch boxes, and paper lunch boxes that are not heat-resistant should not be put in the microwave oven.

1. Paper lunch box. No paper item should be put in the microwave, which can even ignite metal, let alone flammable paper.

2. Non-heat-resistant plastic lunch boxes. Most plastics should not be heated in the microwave, and the only plastic that can be put in the microwave oven is polypropylene, if it is not clear, for the sake of insurance, do not heat the plastic container unless it is marked that it can be heated.

3. Metal lunch box. Although the metal is stable, heat-resistant, and non-flammable under normal conditions, the unique heating method of the microwave oven can make the metal molecules vibrate violently, causing the metal tableware to spontaneously combust.

Lunch boxes that cannot be put into the microwave, paper, metal.