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Plastic tableware safety distinction

Update:26 Apr 2019
Summary:

Each plastic article has a triangular triangle with an […]

Each plastic article has a triangular triangle with an arrow at the bottom end, which is a "regeneration" sign. There are Arabic numerals from 1-7, the difference in Arabic numerals, representing the different properties and different uses of this plastic material. Just like the identification of plastic products.
The number "1" represents that the material of the plastic is PET, that is, polyethylene terephthalate, common mineral water bottle, carbonated beverage bottle, etc., heat resistant to 70 ° C, easy to deform, and substances harmful to the human body are dissolved; After 10 months, the carcinogen DEHP may be released; it cannot be placed in the car to basking in the sun, and it is not allowed to contain alcohol or oil. This type of bottle can no longer be filled with water after use. Please drop it in the recyclable bin and let it be recycled.
The number "2" indicates that the plastic is made of HDPE, which is commonly used as a bottle for cleaning products and shower products. Not for food packaging.

The number "3" indicates that the plastic is made of PVC. This kind of material is prone to harmful substances when it is hot, and even it will be released during the manufacturing process. When toxic substances enter the human body with food, it may cause diseases such as breast cancer and birth defects. Containers of this material have rarely been used to package food. If you are using it, don't let it get hot.
The number "4" indicates that the plastic is made of LDPE. General products are cling film, plastic film, and the like. The heat resistance is not strong. Generally, the qualified PE cling film will have a hot melt phenomenon when the temperature exceeds 110 ° C, leaving some plastic preparations that cannot be decomposed by the human body. Moreover, the food wrapped in plastic wrap is heated, and the fat in the food can easily dissolve the harmful substances in the wrap film. Therefore, when the food is placed in the microwave oven, the wrapped plastic wrap is first removed.
The number "5" indicates that the material of the plastic is PP. High temperature resistance, more common in microwave lunch boxes. It can be reused after careful cleaning. Need special attention, some microwave lunch boxes, the box is indeed made of No. 5 PP, but the cover is made of No. 1 PE, because PE can not withstand high temperature, it can not be put into the microwave together with the box. To be on the safe side, remove the lid before placing it in the microwave oven.
The number "6" indicates that the material of the plastic is PS. More common in bowls of instant noodles, fast food boxes. It is also heat-resistant and cold-resistant, but it cannot be placed in a microwave oven to prevent the release of chemicals due to excessive temperature. And can not be used to contain strong acid (such as orange juice), strong alkaline substances, because it will break down the polystyrene that is not good for the human body, it is easy to cause cancer. Therefore, you should try to avoid using hot food boxes to pack hot food.
The number "7" represents the material of the plastic except for PVC or polystyrene or a composite material of various plastic materials. More common in kettles, cups, bottles. High temperature resistant, can be used repeatedly, but can not be heated in a microwave oven.
To distinguish the different materials and uses of plastic materials, you may wish to carry out a major inspection of your plastic tableware and remove those plastic tableware that are harmful to health. In daily life, when purchasing foods such as cooked foods and snacks, it is best to bring your own tableware or standard plastic food bags. A disposable plastic lunch box or plastic bag will allow toxic substances to penetrate into the food. Refrigerated and frozen foods in the refrigerator should also be covered with plastic wrap or fresh-keeping bags. Do not use ordinary plastic bags instead. It is best to use porcelain cups, porcelain bowls or glasses, glass bowls for daily drinking and eating.

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