What do the numbers on the bottom of the plastic
What do the numbers on the bottom of the plastic cosmetic hose mean? The meanings of the numbers 1 to 7 at the bottom of the plastic cosmetic hose are as follows: The number 1 at the bottom of the plastic cosmetic hose represents PET, that is, polyethylene terephthalate mineral water cosmetic hose and carbonated beverage cosmetic hose are all used in this Made of material. Dong Jinshi pointed out that beverage and cosmetic hoses cannot be recycled to hold hot water. This material is heat-resistant to 70°C. It is only suitable for warm or frozen drinks. It is easy to deform when it is filled with high-temperature liquid or heated, and harmful substances to the human body may be dissolved. Scientists have discovered that after 10 months of use, this plastic product may release carcinogens that are toxic to the human body. Therefore, throw away the beverage and cosmetic hoses when they are used up, and don't use them as water cups or as storage containers for other items. (It was because the UAE girl used the same mineral water cosmetic hose for 16 months, the carcinogen DEHP was precipitated, and unfortunately suffered from cancer.)
The number 2 at the bottom of the plastic cosmetic hose stands for HDPE, that is, high-density polyethylene plastic containers for cleaning products and bath products. At present, most of the plastic bags used in supermarkets and shopping malls are made of this material and can withstand high temperatures of 110°C. Food plastic bags can be used to hold food. Plastic containers containing cleaning supplies and bath products can be reused after careful cleaning. However, these containers are usually not easy to clean. The original cleaning supplies remain and become a breeding ground for bacteria. The cleaning is not thorough and it is best not to recycle.
The number 3 at the bottom of the plastic cosmetic hose represents PVC, that is, polyvinyl chloride common raincoats, building materials, plastic films, plastic boxes, etc. Good plasticity and low price. But it can only withstand high temperatures of 81°C. According to reports, the toxic and harmful substances that plastic products of this material easily produce come from two aspects, one is the monomolecular vinyl chloride that is not fully polymerized during the production process, and the other is the harmful substances in the plasticizer. These two substances are easy to separate out when encountering high temperature and grease. When toxic substances enter the human body with food, they are easy to cause cancer. At present, containers of this material have been less used for packaging food. If it is in use, do not let it heat up.
The number 4 at the bottom of the plastic cosmetic hose represents LDPE, that is, low-density polyethylene cling film, plastic film, etc. are all this material. The heat resistance is not strong. Generally, qualified PE cling film will melt when the temperature exceeds 110℃, leaving some plastic preparations that cannot be decomposed by the human body. In addition, when food is wrapped in plastic wrap and heated, the fat in the food can easily dissolve harmful substances in the plastic wrap. Therefore, when the food enters the microwave oven, the wrapped plastic wrap must be removed first. The number 5 at the bottom of the plastic cosmetic hose stands for PP, that is, polypropylene. The microwave lunch box is made of this material, resistant to high temperature of 130℃, and has poor transparency. This is the only plastic box that can be placed in a microwave oven. It can be reused after careful cleaning. It is important to note that in some microwave oven lunch boxes, the box body is made of No. 05 PP, but the lid is made of No. 06 PS (polystyrene). PS has good transparency but is not resistant to high temperatures, so it cannot be the same as the box body. And put it in the microwave. To be safe, remove the lid of the container before putting it in the microwave. The number 6 at the bottom of the plastic cosmetic tube stands for PS. Polystyrene is the material used to make bowls of instant noodle boxes and foaming fast food boxes. It is heat-resistant and cold-resistant, but cannot be placed in a microwave oven to avoid the release of chemicals due to excessive temperature. And can not be used to contain strong acids (such as orange juice), strong alkaline substances, because it will decompose polystyrene which is not good for the human body. Therefore, you should try to avoid using fast food boxes to pack hot food. The number 7 at the bottom of the plastic cosmetic hose represents PC and other types. PC is a material that is used in large quantities, especially for the manufacture of milk cosmetic hoses, space cups, etc. In recent years, milk cosmetic hoses have been controversial because they contain bisphenol A. Experts pointed out that in theory, as long as 100% of the bisphenol A is converted into a plastic structure in the process of making PC, it means that the product is completely free of bisphenol A, let alone released. 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. The bisphenol A remaining in the PC, the higher the temperature, the more release and the faster the speed. Therefore, the PC water cosmetic hose should not be used to hold hot water. If the container has any fall or damage, it is recommended to stop using it, because if there are fine pits on the surface of the plastic product, it is easy to hide bacteria. Avoid repeated use of aging plastic appliances.