NEWS
What does the 7 in the middle of the triangle under the plastic cup mean?
2023-02-20
7 represents the environmental protection cycle mark of plastic,PC category,which is used for common plastic varieties.The meaning of plastic bottle bottom mark is as follows:
1."No.1"PETE:mineral water bottles,carbonated beverage bottles and beverage bottles are recycled to contain hot water.
Use:heat resistant to 70℃,only suitable for warm drinks or frozen drinks,but easy to deform when filled with high-temperature liquid or heated,and substances harmful to human body will melt out.In addition,scientists found that the carcinogen DEHP may be released from plastic No.1 after 10 months of use.
2."No.2"HDPE:cleaning products and bath products.It is not recommended to recycle them if they are not well cleaned.
Use: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.Do not recycle.
3."No.3"PVC:It is rarely used for food packaging at present,so do not buy it.
4."No.4"LDPE:plastic film,plastic film,etc.The plastic film should not be wrapped on the food surface and put into the microwave oven.
Use:The heat resistance is not strong.Generally,qualified PE film will melt when the temperature exceeds 110℃,leaving some plastic preparations that cannot be decomposed by human body.In addition,wrap the food in the plastic wrap and heat it.The oil in the food can easily dissolve the harmful substances in the plastic wrap.Therefore,before food is put into the microwave oven,take off the wrap.
5."No.5"PP:Take off the lid of the microwave oven lunch box when putting it into the microwave oven.
Use:The plastic box that can be put into the microwave oven can be reused after careful cleaning.Special attention should be paid to 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 safe,take off the lid before putting the container into the microwave oven.
6."No.6"PS:instant noodles in bowls,fast food boxes,don't use microwave oven to cook instant noodles in bowls.
Use: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 it cannot be used to contain strong acids(such as orange juice)and strong alkaline substances,because polystyrene,which is not good for human body,can be easily carcinogenic.Therefore,you should try to avoid using fast food boxes to pack hot food.
7."No.7"PC:other categories:kettle,cup,bottle.
"No.7"PC is a widely used material,especially in milk bottles,which is controversial because it contains bisphenol A.
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