PET or PETE───polyethylene terephthalate; mineral water bottles, carbonated beverage bottles, etc.; Tips: Do not recycle beverage bottles, and do not pack hot water; Suitable for warm drinks or frozen drinks, high loading; high transparency, can be seen at a glance; acid and alkali resistance, can be loaded with various acidic fruits; HDPE or PE-HD ─ ─ high density polyethylene: commonly used; bath Product; Hint: It is not recommended to recycle if the cleaning is not thorough; Use Note: It can be reused after careful cleaning, but these containers are usually; HDPPET or PETE ─ ─ polyethylene terephthalate, often referred to as polyester : Commonly used in mineral water bottles, carbonated beverage bottles, etc.

Tip: Do not recycle beverage bottles, do not fill hot water

Note on use: Heat-resistant to 70°C, it is only suitable for warm or frozen drinks. It is easy to deform when filled with high-temperature liquids or heated, and there are substances harmful to the human body that melt 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. Therefore, throw away beverage bottles when they are used up, do not use them as water cups, or use them as storage containers to carry other items, so as not to cause health problems.

It has high transparency and can be seen at a glance; acid and alkali resistance, can hold various acidic juices and carbonated beverages; high waterproofness, not easy to seep out. If it is only used as a jar for low-temperature beverages, it is very suitable, which is why it is favored by beverage manufacturers and is often used to hold various juices, water, tea and other beverages.

HDPE or PE-HD──High Density Polyethylene: commonly used in white medicine bottles, cleaning products, bath products

Tip: It is not recommended to recycle if the cleaning is not thorough

Note on 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 breeding ground for bacteria, you better not recycle them.

HDPE has better hardness, melting point and corrosion resistance than LDPE. It is widely used in various translucent and transparent plastic containers. However, because it is more resistant to various corrosive solutions, it is mostly used in cleaning products and bath products. Wait.

PVC or V───polyvinyl chloride: common raincoats, building materials, plastic films, plastic boxes, etc., are rarely used in food packaging at present

Tip: It's best not to buy

Use Note: Because of its excellent plasticity and low price, it is very common to use! Only heat-resistant to 81 ℃ - this material is prone 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 diseases such as breast cancer and birth defects of newborns. At present, containers of this material have been rarely used for packaging food. If it is in use, do not let it be heated, it is difficult to clean and easy to remain, and do not recycle. Do not buy if it is packed with drinks.

PVC is a plastic container that has been used less and less in recent years. At present, it is rarely used in food packaging. If there is a container to use it as a food container, it is recommended not to buy it.

LDPE or PE-LD──low density polyethylene: commonly used in cling film, plastic film, etc.

Tip: Do not wrap the plastic wrap on the surface of the food and put it in the microwave

Note for use: The heat resistance is not strong. Usually, when the temperature exceeds 110 ℃, the qualified PE plastic wrap will appear hot-melting phenomenon, 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. After the poison enters the human body with food, it may cause diseases such as breast cancer and birth defects of newborns. Therefore, when the food is put into the microwave oven, the wrapped plastic wrap must be removed first.

LDPE is mostly used in other utensils such as plastic films. It has good ductility and is widely used in life, but it is generally not used as a beverage container.

Special reminder: use plastic wrap to see the warning, do not microwave heating

PP───Polypropylene: commonly used in soy milk bottles, yogurt bottles, juice beverage bottles, microwave lunch boxes

Tip: When putting in the microwave, remove the lid

Note on use: Melting point is as high as 167°C, it is the only plastic box that can be put in a microwave oven 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 temperature, 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. Special reminder: Only polypropylene plastics can be put into the microwave oven.

PS──-polystyrene: commonly used in bowls of instant noodle boxes and fast food boxes

Tip: Don't use the microwave to cook instant noodles in a bowl

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

Other or O—All other resins and compounds not listed: Commonly used in kettles, drinking glasses, feeding bottles

Tip: When using, the heating temperature should not exceed 100 ℃, and do not expose to direct sunlight.

Note on use: In the high temperature environment, the toxic substance BPA, or bisphenol A, will be released, which is harmful to the human body. So it is very important to properly sterilize the PC bottle. Fu Xiaoqing, the attending physician of Pediatrics at Beijing Dongsi Obstetrics and Gynecology Hospital, suggested that parents try to use glass feeding bottles. Some parents are accustomed to using a steamer to sterilize the milk bottle, but the temperature of the steamer exceeds 100 ℃. At this time, the BPA in the PC milk bottle will dissolve more, so it is not suitable to use the steamer to sterilize. In addition, because the plastic feeding bottle is used repeatedly and will be worn and aged after repeated disinfection, the dissolved BPA will also increase at this time, so the doctor reminds parents that the feeding bottle can be used for a maximum of 8 months to 1 year. And the same kettle, water cup too!

BPA - Bisphenol A

BPA refers to bisphenol-based propane and is also abbreviated as bisphenol A. PC plastic is directly produced by BPA through the polymerization reaction. Usually PC (polycarbonate) plastic products contain BPA (bisphenol A), so most plastic containers and packaging such as PC baby bottles and beverage bottles contain this substance. Moreover, when the PC material is in water above 80 degrees Celsius, BPA will seep out.

Whether BPA is harmful to health, especially children's health, has been debated for a long time. Mouse experiments have shown that BPA can affect the reproductive system and is a possible carcinogen. Many countries and regions, including the United States, the European Union, China, and Japan, have long established the dissolution limit of BPA in plastic products that come into contact with food. Some existing research results call for a complete ban on the use of BPA in related products.