What are the signs and signs of plastic products?

The marks and signs of plastic products are as follows:

"01"-pet (polyethylene terephthalate) mineral water bottles and carbonated beverage bottles are all made of this material. Dong Jinshi pointed out that beverage bottles cannot be recycled with hot water. This material is heat-resistant to 70℃ and is only suitable for warm drinks or frozen drinks. It is easy to deform when filled with high-temperature liquid or heated, and substances harmful to human body are dissolved out.

Moreover, scientists have found that this plastic product may release carcinogenic substances that are toxic to human body after 10 months. Therefore, drink bottles should be discarded after use, and should not be used as cups or containers for storing other items, so as to avoid health problems. ?

"02"-HDPE plastic containers for cleaning products and bath products, and plastic bags used in supermarkets and shopping malls at present are mostly made of this material, which can withstand the high temperature of 1 10℃, indicating that plastic bags for food can be used to hold food. Plastic containers containing cleaning products and bath products can be reused after careful cleaning, but these containers are usually not easy to clean, making the original cleaning products a hotbed of bacteria and incomplete cleaning, so it is best not to recycle them. ?

It is reported that plastic products made of this material are prone to produce toxic and harmful substances from two aspects, one is monomolecular vinyl chloride that has not been fully polymerized in the production process, and the other is harmful substances in plasticizers. These two substances are easy to precipitate when they encounter high temperature and oil, and toxic substances are easy to cause cancer after entering the human body with food. At present, containers made of this material are rarely used for packaging food. If it is in use, don't let it get hot. ?

"04"-LDPE (Low Density Polyethylene) cling film, plastic film, etc. Are made of this material. Heat resistance is not strong. Generally qualified PE plastic wrap will melt when the temperature exceeds 1 10℃, leaving some plastic preparations that cannot be decomposed by human body. Moreover, when food is wrapped in plastic wrap and heated, the oil in food can easily dissolve the harmful substances in plastic wrap. Therefore, before putting food into the microwave oven, the plastic wrap of the package must be removed first. ?

"05"-PP (polypropylene) microwave lunch box is made of this material, which can withstand the high temperature of 130℃ and has poor transparency. It is the only plastic box that can be put into the microwave oven and can be reused after careful cleaning. It should be noted that some microwave lunch boxes are made of No.05 PP, but the lid is made of No.06 PS (polystyrene). PS has good transparency, but it is not resistant to high temperature, so it can't be put in the microwave oven with the box. For the sake of safety, please open the lid of the container before putting it into the microwave oven.

"06"-PS (polystyrene) This is the material used to make instant noodle boxes in bowls and foamed fast food boxes. It is heat-resistant and cold-resistant, but it can't be put into the microwave oven to avoid releasing chemicals due to excessive temperature. Moreover, it can't be used to contain strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene that is not good for human body. Therefore, you should try to avoid packing hot food in fast food boxes. ?

"07"-PC and other kinds of PCs are widely used materials, especially for making bottles, space cups and so on. Experts pointed out that in theory, as long as bisphenol A is completely converted into plastic structure in the process of manufacturing PC, it means that the product has no bisphenol A at all, let alone released 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, special attention should be paid when using this plastic container.

The higher the temperature, the more bisphenol A remaining in PC is released, and the faster it is released. Therefore, PC water bottles should not be used to hold hot water. If your kettle number is 07, the following methods can reduce the risk: don't heat it when using it, and don't direct it in the sun. You don't need a dishwasher or a bowl dryer to clean the kettle. Before the first use, wash with baking soda and warm water, and naturally dry at room temperature. If the container is injured or damaged, it is recommended to stop using it, because it is easy to hide bacteria if there are tiny pits on the surface of plastic products.