The characteristics of seven plastic materials

The most common materials for plastic products are PP, PV, and PC. These materials are marked with corresponding numbers from 1 to 7 in the triangle at the bottom. In addition to indicating what material the plastic is made of, these numbers are also a product instruction And safety signs. Today, Diner Tool tells you the characteristics of the seven materials of plastic. 1. "01" is best to throw away after drinking. Heat resistance 70℃
"01" stands for PET (polyethylene terephthalate), which is most commonly used to make bottled beverages such as mineral water and carbonated drinks. Beverage bottles made of this material cannot be filled with hot water. They are only suitable for warm or frozen drinks. They are easily deformed when they are filled with high-temperature liquids or heated, and substances harmful to the human body can be dissolved.

2. "02" is not recommended as a water-holding appliance, heat-resistant 110℃
"02" stands for HDPE (High Density Polyethylene). Plastic containers containing cleaning products and bath products or plastic bags commonly used in shopping malls are mostly made of this material. It can withstand a high temperature of 110 ℃, if it is made into a cup and marked for food, it can be used to hold food.

3. "03" cannot be heated, heat resistant to 81℃
"03" stands for PVC (polyvinyl chloride), which is commonly found in raincoats and plastic films. Plastic products made of this material are prone to produce two toxic and harmful substances: 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. If they accidentally enter the human body, they are likely to cause cancer. Therefore, it is rarely used in cup production. If you buy a plastic cup of this material, do not let it heat up.

Four, "04" over 110℃ will cause hot melt phenomenon, heat resistance 110℃
"04" means LDPE (low-density polyethylene), a raw material for cling film and plastic film, which has low heat resistance. Qualified PE plastic wrap will melt when the temperature exceeds 110°C, leaving some plastic preparations that cannot be decomposed by the human body. If the food is wrapped and heated at the same time, the fat in the food will more easily dissolve the harmful substances in the plastic wrap.

5. "05" can be reused after careful cleaning, heat resistance 130℃
"05" stands for PP (polypropylene), which is the only material that can be heated in a microwave oven, so it becomes the raw material for making microwave lunch boxes. High temperature resistance of 130℃, melting point as high as 167℃, poor transparency, can be reused after careful cleaning. It should be noted that some microwave oven plastic cups are made of No. 05 PP, but the lid is made of No. 06 PS. PS has good transparency but is not resistant to high temperatures, so it cannot be placed in the microwave together with the cup body. Don’t forget to remove the lid first before heating the cup.

6. "06" must not directly heat the bowl of instant noodle box, heat-resistant 100 ℃
"06" means PS (polystyrene), which is used to make bowls of instant noodle boxes, foamed snack boxes, and disposable cups. It cannot be used to contain strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene (carcinogen) which is not good for the human body. Although it is resistant to heat and cold, it also releases chemicals due to high temperatures. Therefore, do not directly heat the bowl of instant noodle boxes in the microwave.

7. "07" can be used carefully to avoid "bisphenol A" Heat resistance: 120℃
"07" stands for PC and other types of PC. It is a material that is used in large quantities. It is mostly used to make baby bottles and space cups. It is controversial because it contains toxic bisphenol A. In theory, as long as the bisphenol A is 100% 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. But no plastic cup manufacturer can guarantee that bisphenol A has been completely converted, so you need to pay attention to it during use: do not heat during use, do not expose it to direct sunlight; do not use dishwasher or dish dryer to clean the kettle; the first time Before use, wash with baking soda and warm water, and dry naturally at room temperature; if the container is broken or damaged, stop using it immediately, and avoid repeated use of the aging plastic cup.

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