Plastic bottle bottom label

"No. 1" PETE

Mineral water bottle, carbonated beverage bottle

Beverage bottles should not be recycled or filled with hot water.

Use: Heat-resistant to 70°C, only suitable for warm or frozen drinks, easy to deform when filled with high-temperature liquid or heated, and there are substances harmful to the human body melted out. In addition, scientists found that after 10 months of use, plastic No. 1 may release the carcinogen DEHP, which is toxic to the testicles.

"No. 2" HDPE

Cleaning products, bath products

Cleaning can not be thorough, it is recommended not to recycle.

Use: Can be reused after careful cleaning, but these containers are usually not easy to clean, leaving the original cleaning supplies and becoming a breeding ground for bacteria, it is best not to recycle.

"No. 3" PVC

Rarely used in food packaging, it is best not to buy.

"No. 4" LDPE

Cling film, plastic film, etc.

Do not put plastic wrap on the surface of food and heat it in the microwave.

Use: The heat resistance is not strong. Usually, when the temperature exceeds 110 °C, the qualified PE plastic wrap will appear hot melt, leaving some plastic preparations that cannot be decomposed by the human body. In addition, when the food is heated by wrapping the plastic wrap, the oil in the food can easily dissolve the harmful substances in the plastic wrap. Therefore, when the food is put into the microwave oven, the wrapped plastic wrap must be removed first.

"No. 5" PP

microwave lunch box

When placing in the microwave, the lid should be removed.

Use: The only plastic box that can be placed in the microwave and can be reused after careful cleaning. Special attention should be paid to some microwave lunch boxes. The box body is indeed made of No. 5 PP, but the lid is made of No. 1 PE. Since PE cannot withstand high temperatures, it cannot be put into the microwave oven together with the box body. To be on the safe side, remove the lid before placing the container in the microwave.

"No. 6" PS

Bowl of instant noodle box, fast food box

Do not cook instant noodles in bowls in the microwave.

Use: It is heat-resistant and cold-resistant, but cannot be placed in a microwave oven to avoid the release of chemicals due to excessive temperature. And it cannot be used to hold strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene that is not good for the human body, which is easy to cause cancer. Therefore, you should try to avoid packing hot food in snack boxes.

"No. 7" PC

Other categories: Kettles, drinking glasses, feeding bottles

PC glue releases bisphenol A when heated

Use: A material that is used in large quantities, especially in baby bottles, and is controversial because of its BPA content. Lin Hanhua, an associate professor at the Department of Biology and Chemistry at City University of Hong Kong, said that theoretically, as long as 100% of bisphenol A is converted into a plastic structure during the production of PC, it means that the product is completely free of bisphenol A, let alone released. However, if a small amount of BPA is not converted into the plastic structure of PC, it may be released into food or drink. So be careful and take extra care when using this plastic container.

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

●Do not wash the kettle with a dishwasher or a dishwasher.

●Do not heat during use.

●Do not expose the kettle to direct sunlight.

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

●If the container is damaged or damaged in any way, it is recommended to stop using it, because if the surface of the plastic product has tiny pits, it is easy to hide bacteria.

● Avoid repeated use of aged plastic utensils.