Is it toxic to heat disposable plastic bowls at high temperature? Takeaway is convenient for our life, especially for people who live in special homes and are particularly lazy. Therefore, it has become a habit to often eat the take-out of disposable lunch boxes. Takeaway is usually packed in disposable plastic bowls. Is it toxic to heat disposable plastic bowls at high temperature?
Is it toxic to heat disposable plastic bowls at high temperature? 1 toxic, because disposable lunch boxes can only contain warm food, and toxic substances will leak out at high temperature. Many materials of this disposable lunch box are not up to standard, not to mention high temperature, so for the sake of safety, never use disposable lunch boxes to heat at high temperature.
Plastics are mostly made of polyvinyl chloride, which releases toxic substances when exposed to high temperature, and it is harmful to health when it enters the body with meals.
According to the latest issue of Environmental Watch magazine in the United States, phthalate esters, a synthetic chemical widely found in plastic toys, bottles, cosmetics and other plastic consumer goods, may harm the reproductive organs of baby boys, affect the development of children's sexual characteristics, and even lead to reproductive system cancer.
Almost at the same time, a paper published in Endocrinology Monthly pointed out that phenol methane, also a chemical commonly used in plastic products, may cause breast cancer in women.
Hot soup in plastic bags can cause cancer. The main component of making plastic bags is polyvinyl chloride, and its released hydrogen chloride (HCL) is a toxic gas, especially plastic bags that have not been inspected by health departments.
The content of HCL gas released by it greatly exceeds the standard, which is very harmful to human body and easy to cause cancer. According to experts, when the temperature of food in disposable foamed plastic tableware reaches above 60 degrees, the foamed plastic lunch box will release toxic substances, which will cause certain damage to the central nervous system of human body and seriously threaten people's health.
Disposable foamed plastic lunch boxes and plastic bags for food seriously affect our health. When the temperature reaches 65℃, harmful substances in disposable foamed plastic tableware will penetrate into food, causing damage to human liver, kidney and central nervous system.
In China, almost all the ultra-thin plastic bags we use come from the reuse of waste plastics, which are produced by small enterprises or family workshops. The raw materials used in these factories are discarded plastic barrels, cans and disposable syringes.
In production, the raw materials are crushed into plastic particles by machinery, then the plastic particles are put into a pool for cleaning (called disinfection), taken out and dried, and then pressed into films by machinery to make various plastic bags. Every time we eat, many people pack food in plastic bags, which is not only harmful to the environment, but also to their own health.
The degradation time of plastic products usually takes at least 200 years. Abandoned agricultural films and plastic bags left in farmland for a long time will affect the absorption of water and nutrients by crops, inhibit the growth and development of crops, and cause crop yield reduction. If livestock eat plastic film, it will cause digestive tract diseases and even death.
Due to the soft foundation of the site after plastic film landfill, harmful substances such as bacteria and viruses in garbage can easily penetrate into the ground, pollute groundwater and endanger the surrounding environment. If waste plastics are burned directly, it will cause serious secondary pollution to the environment.
When plastics are burned, it will not only produce a lot of black smoke, but also produce dioxin, which is by far the most toxic substance. It takes at least 15 months for dioxins to decompose gradually after entering the soil, which is harmful to plants and crops.
Dioxin has serious damage to the liver and brain of animals. In addition, because disposable plastic tableware is difficult to degrade, many cities are now promoting the use of green tableware-paper tableware. The principle is that cellulose, the component of paper products, can be degraded by microorganisms. However, it is unwise to use paper tableware instead of foamed plastic tableware.
First of all, paper tableware will also bring visual pollution. Their degradation speed is not fast, and often they will not be completely degraded for dozens of days or even months.
Secondly, when making paper and tableware, in addition to straw pulp and rice pulp, wood pulp of about 1/3 should be added. If it is fully promoted, it will inevitably lead to the consumption of a large number of wood and the intensification of deforestation. However, the forest coverage rate in China is only 13 and 92%, and the per capita forest area is only equivalent to the world average of 17 and 2%.
Thirdly, pulping has always been a big consumer of water, energy and sewage. The pulping process needs a lot of water, and China is a country short of water. If the sewage is directly discharged into the river without treatment, it will cause water pollution;
Paper tableware needs to be dried immediately after forming, which consumes a lot of energy. China's energy structure is dominated by burning coal, which will increase the content of SO2 in the air and cause acid rain.
Is it toxic to heat disposable plastic bowls at high temperature? 2 1. The white disposable lunch box on the street is PS, so it can't be heated by microwave, which will be harmful after high temperature.
2. Fresh trays in supermarkets can be frozen or heated, but they should be heated by microwave oven for no more than 3 minutes.
3. Free transparent plastic lunch boxes in supermarkets are made of PP, which can be heated, but the temperature cannot exceed 120.
4. The plastic wrap we use is PVC and PE. Don't heat it in the microwave oven. High-end writing floors generally have microwave ovens for employees to use, and plastic lunch boxes made of red and black materials should be placed on a small fire for no more than 3 minutes. Among them, the one that sells better in the market is Japan Central Chemical, which is made of CT, but we can't judge.
So many plastic lunch boxes can't be heated at too high a temperature. If heated at high temperature for a long time, toxins will come out and toxic substances will directly harm our bodies.
What are the hazards of using disposable plastic tableware? First of all, it is certain that the harm of this kind of tableware to the environment is immeasurable. Most disposable plastic tableware in the market is non-degradable. Even if it is buried underground for 100 years, the plastic will not degrade, which will lead to huge environmental pollution, and also make the estrogen in the environment exceed the standard, posing a major threat to human health.
Disposable plastic tableware not only pollutes the environment, but also may do harm to human health. At present, disposable plastic tableware on the market uses polyethylene as the main raw material, so it is ok to hold food at low temperature.
However, if food is eaten at high temperature, even exceeding 200 degrees Celsius, high temperature may release toxic and harmful substances from polyethylene, thus threatening human health. Some inferior disposable plastic tableware may also have powder on its inner surface, which may also cause harm to human body if it comes into contact with food for a long time.
To sum up, what are the hazards of using disposable plastic tableware? I have given you a detailed introduction to this problem. The harm of disposable plastic tableware to human body and environment should not be underestimated, and it is very harmful to human health and environment.
A large number of disposable plastic tableware are discarded in the environment, and degradation becomes a problem, causing white pollution and endangering the health of future generations.
Disposable plastic tableware is often used to hold food. If it encounters high temperature, it will release toxic and harmful substances and threaten people's health. Therefore, in order to reduce environmental pollution and our own health, we should reduce the use of disposable plastic tableware.
Is it toxic to heat disposable plastic bowls at high temperature? Can the microwave oven use disposable plastic bowls?
Disposable lunch boxes made of general materials cannot be heated in the microwave oven, because they have a low melting point and will melt after heating, and the heated food may melt together with the lunch box.
When hot oil (such as edible oil) is heated, foam plastics will melt and react chemically, which will produce toxins harmful to human body and carcinogenic dioxins. Therefore, it is suggested that the food in the lunch box should be taken out and heated in other allowed tableware.
You can look at the triangular logo in the disposable plastic lunch box. If the number inside is "5", you can enter the microwave oven, that is, No.5 plastic polypropylene (PP). Polypropylene (PP) is relatively heat-resistant and can withstand the high temperature of about 200℃, so it can be heated by microwave, and repeated heating will not cause any major problems.
Is it poisonous to heat disposable fast food boxes in the microwave oven?
If the disposable snack box is not high-temperature resistant No.5 plastic, it is not recommended to heat it in a microwave oven, which will produce toxins.
The plastics used to make disposable lunch boxes are mainly "No.5" PP polypropylene and "No.6" PS polystyrene, which are non-toxic and tasteless.
PP is soft and can be used at the temperature of-10℃ to+1 10℃, so it is especially suitable for hot rice and hot dishes, so it can be heated by microwave oven or even steamed in a steamer. The use temperature of modified PP can be controlled between -20℃ and+12 1℃.
The lunch box made of this PP can be heated and stored in the refrigerator. PS is hard, but fragile, it will soften at 75 degrees, and it can't hold hot meals and hot dishes, but it has good low-temperature performance.
It should be noted that the plastic lunch box lid marked with 5 must be removed when heating food. This is because the plastic lunch box and lid may not be made of the same material. If they are made of PE material, this material will be deformed by 70 degrees. If the temperature is very high, it may cause harmful substances to dissolve into food, which is undoubtedly very dangerous.
What kind of plastic lunch box is the safest
Usually, when buying a lunch box, the number in the triangle below should be one of 5, 6 or 7. If you want to put food in the microwave oven, it is recommended to use PP lunch box No.5.
For example, 1 plastic is a plastic bottle for drinking. As long as it is heated slightly, it will deform and release substances that are toxic and harmful to the body, so please pay attention to the numbers at the bottom.