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What’s the meaning of a number in the triangular circle on the beverage bottle

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[plastic recycling logo] logo: the recycling logo of plastic products is formulated by relevant institutions of the plastic industry in the United States. This set of signs marks the plastic material identification code on the container or package, from No. 1 to No. 7, so that people can simply join the recycling work without bothering to learn the similarities and differences of various plastic materials. Each plastic container has a small ID card – a triangular symbol, which is usually at the bottom of the plastic container. There are 1 ~ 7 numbers in the triangle, and each number represents a kind of plastic container. They are made of different materials and taboos

[QS] identification: the abbreviation “QS” of the pinyin “” of “enterprise food production license” is indicated, and the Chinese words “production license” are marked. It is different from the original English abbreviation QS (quality safety)

represents the grade of plastic

“No. 1” pet: mineral water bottles, carbonated beverage bottles, beverage bottles are not recycled. Use with hot water: heat resistant to 70 ℃, it is only suitable for warm or frozen drinks. If it is filled with high-temperature liquid or heated, it is easy to deform, and substances harmful to human body melt out In addition, scientists found that No. 1 plastic may release carcinogen DEHP after 10 months of use, which is toxic to * * * Therefore, drink bottles should be discarded when they are used up. They should not be used as water cups or storage containers to hold other items, so as not to cause health problems
“No.2” HDPE: cleaning products and bath products are not thoroughly cleaned. It is recommended not to recycle them: they can be reused after careful cleaning, but these containers are usually difficult to clean, leaving the original cleaning products and becoming a hotbed of bacteria. You’d better not recycle them
“No.3” PVC: at present, it is rarely used for food packaging. It is best not to buy and use it: this material is easy to produce harmful substances at high temperature, and even it will be released during the manufacturing process. After the toxic substances enter the human body with food, they may cause breast cancer, neonatal congenital defects and other diseases At present, containers made of this material are rarely used to package food If in use, do not let it heat
“No.4” LDPE: wrap the fresh-keeping film, plastic film and other fresh-keeping films on the food surface and use them in the microwave oven: the heat resistance is not strong. Generally, the qualified PE fresh-keeping film will melt when the temperature exceeds 110 ℃, leaving some plastic preparations that cannot be decomposed by the human body In addition, wrap the food with plastic wrap and heat it. The oil in the food can easily dissolve the harmful substances in the plastic wrap Therefore, when putting food into the microwave oven, first remove the wrapped preservative film
“No.5” PP: when the microwave oven lunch box is put into the microwave oven, remove the cover for use: the only plastic box that can be put into the microwave oven can be reused after careful cleaning
it should be noted that for some microwave oven lunch boxes, the box body is indeed made of No. 5 PP, but the box cover is made of No. 1 PE. Because PE cannot withstand high temperature, it cannot be put into the microwave oven together with the box body To be on the safe side, remove the lid before putting the container into the microwave oven
“No. 6” PS: do not cook instant noodles in a microwave oven in a bowl of instant noodles box and fast food box: it is heat-resistant and cold resistant, but it cannot be put into the microwave oven to avoid releasing chemicals due to high temperature And can not be used to carry strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene which is bad for human body and is easy to cause cancer Therefore, you should try to avoid packing hot food in fast food boxes
other types of “7” PC: kettle, water cup and milk bottle PC glue is used in case of heat-release bisphenol A: a material widely used, especially in milk bottles, which is controversial because it contains bisphenol A Lin Hanhua, an associate professor of biology and chemistry at the City University of Hong Kong, said that in theory, as long as bisphenol A is 100% converted into plastic structure in the process of making PC, it means that the product has no bisphenol A at all, let alone release it 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, be careful and pay special attention when using this plastic container

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