The slogan of using plastic buckets

There is a small health certificate in the plastic box.

Do you use used beverage bottles as cups? Do you know which plastic containers release toxic carcinogens through exothermic water? In fact, every plastic container has a small ID card-a triangular symbol, usually at the bottom of the plastic container. There are 1 ~ 7 numbers in the triangle, and each number represents a plastic container. They are made of different materials and have different taboos in use.

"No.65438 +0" pets: mineral water bottles and carbonated beverage bottles.

Don't recycle the hot water in the beverage bottle.

Usage: High temperature resistance of 70℃, only suitable for filling warm drinks or frozen drinks. It is easy to deform when it is filled with high-temperature liquid or heated, and harmful substances will be dissolved out. Moreover, scientists have found that after 1 plastic products are used 10 months, DEHP, a carcinogen, may be released, which is toxic to testicles.

Therefore, drink bottles should be thrown away when they are used up. They should not be used as drinking cups or as storage containers for other items, so as not to cause health problems.

"Second place" HDPE: cleaning products and bath products.

If the cleaning is not thorough, it is recommended not to recycle.

Usage: It can be reused after careful cleaning, but these containers are usually not easy to clean, leaving the original cleaning supplies and becoming a hotbed of bacteria. You'd better not recycle them

"No.3" PVC: It is rarely used in food packaging at present.

It's best not to buy it.

Usage: this material is easy to produce harmful substances at high temperature, and even it will be released during manufacturing. Toxic substances enter the human body with food, which may cause diseases such as breast cancer and birth defects of newborns. At present, containers made of this material are rarely used for packaging food. If it is in use, don't let it get hot.

"No.4" LDPE: cling film, plastic film, etc.

Don't put plastic wrap on the surface of food and put it in the microwave oven.

Uses: heat resistance is not strong. Generally qualified PE plastic wrap will melt when the temperature exceeds 1 10℃, leaving some plastic preparations that cannot be decomposed by human body. Moreover, food is wrapped and heated with plastic wrap, and the oil in food can easily dissolve the harmful substances in plastic wrap. Therefore, before putting food into the microwave oven, you must first remove the wrapped plastic wrap.

[5th] PP: microwave lunch box

When you put it in the microwave oven, take off the cover.

Usage: The only plastic box that can be put into the microwave oven can be reused after careful cleaning. It should be noted that some microwave lunch boxes are indeed made of No.5 PP, but the lid is made of No.0 PE/kloc-0. Because PE is not resistant to high temperature, it can't be put in the microwave oven with the box. To be on the safe side, open the lid before putting the container in the microwave oven.

[6th] PS: bowls of instant noodles, fast food boxes

Don't cook a bowl of instant noodles in the microwave oven.

Usage: Heat-resistant and cold-resistant, but it can't be put into the microwave oven to avoid releasing chemicals when the temperature is too high. And it cannot be used to load strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene which is unfavorable to human body and easy to cause cancer. Therefore, you should try to avoid packing hot food in fast food boxes.

Other categories of "No.7" PC: kettle, water cup and milk bottle.

PC glue releases bisphenol A when heated.

Uses: A widely used material, especially in milk bottles, is controversial because it contains bisphenol A. Lin Hanhua, an associate professor in the Department of Biochemistry of City University of Hong Kong, said that in theory, as long as bisphenol a 100% is converted into plastic structure in the process of manufacturing PC, it means that the product contains no bisphenol A at all, let alone released. However, if a small amount of bisphenol A is not converted into the plastic structure of PC, it may be released into food or drink. Therefore, when using this kind of plastic container, we should be especially careful.

Cleaning measures to deal with bisphenol A

The higher the temperature, the more bisphenol A remaining in PC is released and the faster it is. Therefore, PC water bottles should not be used to hold hot water, so as not to increase the release speed and concentration of bisphenol A (if any). If your kettle number is 7, the following methods can reduce the risk:

● Do not heat when using.

● Do not use dishwasher or bowl dryer to clean the kettle.

● Don't let the kettle be exposed to direct sunlight.

● Before the first use, wash it with baking soda powder and warm water and dry it naturally at room temperature. Because bisphenol A will release more during the first use and long-term use.

● If the container is injured or damaged, it is recommended to stop using it, because if there are tiny pits on the surface of plastic products, it is easy to hide bacteria.

● Avoid reusing aging plastic appliances.

Health advice

If you are still worried that plastic products will do harm to the human body at high temperature, it is suggested that it is best not to use them to hold high-temperature liquids, but to use containers made of other materials such as ceramics, steel cups, glasses and paper containers, which can not only reduce the harm to the human body, but also make the environment better by reducing the use of petrochemical products.