What does the logo on the plastic bottle mean?
- Categories:Common Problem
- Time of issue:2021-06-22 13:10
- Views:
(Summary description)Each plastic container has a small ID card - a triangle symbol, 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 have different taboos in use.
What does the logo on the plastic bottle mean?
(Summary description)Each plastic container has a small ID card - a triangle symbol, 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 have different taboos in use.
- Categories:Common Problem
- Author:
- Origin:
- Time of issue:2021-06-22 13:10
- Views:
Each plastic container has a small ID card - a triangle symbol, 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 have different taboos in use.
"No.1" pet: mineral water bottle, carbonated beverage bottle, beverage bottle recycling use: hot water use: heat resistance to 70 ℃, only suitable for warm or frozen drinks, high temperature liquid, or heating is easy to deformation, there are harmful substances melting out. In addition, scientists found that No. 1 plastic may release carcinogen DEHP after 10 months, which is toxic to testis. Therefore, the beverage bottles should be thrown away when they are used up, and should not be used as water cups or storage containers to carry 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. However, these containers are usually not easy to clean, leaving the original cleaning products and becoming a hotbed of bacteria. You'd better not recycle them.
"No.3" PVC: it is rarely used in food packaging at present, so it is better 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, it may cause breast cancer, neonatal congenital defects and other diseases. At present, the containers of this material have been less used for packaging food. If in use, do not let it heat.
"No.4" LDPE: fresh keeping film, plastic film and other fresh-keeping films are not wrapped on the surface of food and used 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. Moreover, when food is wrapped with plastic wrap and heated, the oil in food can easily dissolve the harmful substances in the plastic wrap. Therefore, the food into the microwave oven, first to take off the wrapped plastic wrap.
"No.5" PP: remove the cover of the microwave oven lunch box when it is put into the microwave oven. 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 oven lunch boxes are made of No.5 PP, but the box cover is made of No.1 PE. Because PE can't withstand high temperature, it can't be put into the microwave oven together with the box. To be on the safe side, remove the cover of the container before putting it into the microwave oven.
"No.6" PS: don't use the microwave oven to cook instant noodles in bowls. It's heat-resistant and cold resistant, but it can't be put into the microwave oven to avoid releasing chemicals due to high temperature. And can not be used for loading strong acid (such as orange juice), strong alkaline substances, because it will decompose polystyrene, which is not good for human body, easy to cause cancer. Therefore, you should try to avoid using fast food boxes to pack hot food.
Other types of "No.7" PC: kettle, water cup, milk bottle PC glue meets with heat release bisphenol a use: a kind of material that is widely used, especially in milk bottles, which is controversial because it contains bisphenol A. Lin Hanhua, associate professor of biology and chemistry at City University of Hong Kong, said that in theory, as long as BPA is 100% converted into a plastic structure in the process of making PC, it means that there is no BPA in the product, let alone any release. However, if a small amount of BPA 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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