Precautions for the use of daily plastic products: Do you know these seven minefields?
Improper use of plastic products can also cause harm. According to reports, some plastic products have triangular marks on them, and the triangles are marked with numbers. Different numbers represent different materials and scope of use. Although the mark is mainly for classification and recycling, it can also be used as a reference for safe use.
The meaning of the numbers inside the triangle logo
1: Polyethylene terephthalate, can not be filled with high temperature water and acid and alkaline beverages.
2: High-density polyethylene, not easy to clean thoroughly, not suitable for cooperation with water cups, etc.
3: Polyvinyl chloride, low heat resistance temperature, may release harmful substances when pyrolysis, and it is not suitable for packaging food.
4: Products made of polyethylene, common plastic wrap, plastic film, etc., harmful substances are produced at high temperatures. When food enters the human body, it may cause diseases such as breast cancer and neonatal birth defects.
5: Polypropylene, the only plastic box that can be placed in a microwave oven.
6: Plastic products made of polystyrene, can not be used in high temperature, strong acid, strong alkali environment.
7: Acrylonitrile-styrene resin, high safety, high transparency, resistance to falling, but poor durability.
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