Can you distinguish between several common plastic packaging materials?

January 14, 2023

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Most food packaging bags are made of plastic, and plastics made of different materials are very different. Specifically, it can be divided into the following types.

polyethylene plastic packaging film

1No. plastic (PETE): often make mineral water bottles, carbonated beverage bottles, etc.Transparent plastic bottles made of it are often called”PET bottle”. This plastic is heat-resistant to70℃ will be deformed, only suitable for warm or cold drinks. If it is filled with high-temperature liquid or heated, it will be easily deformed and release substances harmful to the human body. The study also found that the continued use of this plastic10After a few months, it will also release carcinogens, which are extremely harmful to the human body. When you run out of drink bottles, throw them away”recyclable”In the garbage, don’t use it as a drinking glass again. Avoid heat and cracks; also try not to make storage containers for other items, so as to cause health problems more harm than good.

2No. plastic (HDPEare often used as cleaning products, bath products, etc. Common white medicine bottles, skin care, and bath product packaging are all made of this plastic. If you want to reuse it, you need to clean it thoroughly before using it. Trouble is, these containers are often not easy to clean, and can become a breeding ground for bacteria, so it’s best to be careful.It is best not to recycle, but to sort and recycle.

3No. plastic (pvc) often do: raincoats, building materials, etc. ;Good plasticity and cheap price; can’t pack food. This material is prone to produce harmful substances when exposed to high temperatures, and even releases toxic substances during the manufacturing process.Never let it be heated while in use.

4No. plastic (LDPE) often do plastic wrap and so on. People are accustomed to heating food covered with plastic wrap in a microwave oven, thinking that the moisture in the food will not be easily lost and the food will taste better. But in practice, even qualifiedPEPlastic wrap when the temperature exceeds110Thermal melting also occurs at ℃. And, wrap food with plastic wrap and heat, the fat in food is easy to dissolve the harmful substance in plastic wrap. Therefore, before putting the food in the microwave oven, it is better to remove the wrapped plastic wrap.fresh film.It is best not to heat it in the microwave oven.

5No. plastic (PP) often do: special lunch boxes for microwave ovens. This is the only plastic box that is microwave safe and can be reused after being thoroughly cleaned. Special attention should be paid to the fact that some microwave lunch boxes are indeed made of5NoPPManufactured, but the box cover is made of other grades of plastics. Since the box cover is often unable to 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 putting the container in the microwave.

6No. plastic (P.S.) often do: bowl instant noodle box, fast food boxWhen exposed to high temperature, chemical substances harmful to the human body will be released; at the same time, it cannot be used to hold acid (such as juice) and alkaline substances, because carcinogens will be decomposed. Therefore, you should try to avoid packing hot food in fast food boxes, and do not use microwave ovens to cook instant noodles in bowls.Out of consideration for ourselves and the environment, we should still take a cautious attitude towards this kind of disposable items.

7No. plastic (PC),PCIt is a material that is widely used, especially for the manufacture of baby bottles, space cups, etc., because it contains bisphenolAAnd controversial. Experts pointed out that in theory, as long as the productionPCDuring the process, bisphenolA100% conversion into a plastic structure means that the product is completely free of bisphenolsA, let alone released. However, if a small amount of bisphenolAdid not convert toPCplastic structure, it may be released into food or drink. So, be extra careful when using this plastic container.PCresidual bisphenols inAthe higher the temperature, the more release and the faster the speed. Fully qualified products that are safe to use but cannot avoid defective products should not bePCA water bottle holds hot water.Knowing the different types of plastics can better distinguish the different food packaging bags, and provide some help for buying food and heating food at ordinary times.

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