1-PET polyethylene terephthalate: Carcinogens produced after ten months of use. Plastics of this material have a high probability of being discarded after use, and are usually used as mineral water bottles, milk bottles, etc. It is not suitable for supercooled and superheated water, which is easy to precipitate carcinogen DEHP.
2-HDPE (High Density Polyethylene): Not easy to clean, easy to breed bacteria, not recommended for repeated use. Usually cosmetic bottles, shower gel plastic wrap bottles belong to this material.
3-PVC (polyvinyl chloride): It is easy to separate out harmful substances in case of high temperature and grease, and is commonly used in raincoats, plastic toys, building materials, etc.
4-LDPE (Low Density Polyethylene): It is easy to produce harmful substances at high temperature. Plastic bags and plastic wraps commonly used in daily life are all this material. Wrapping food in plastic wrap and heating can easily dissolve harmful substances in the presence of grease.
5-PP (Polypropylene): The only material that can be used for microwave heating, very healthy material. It can be reused after careful cleaning, but generally the lid of the microwave plastic box is not made of PP, so it is recommended to remove the lid when heating.
6-PS (polystyrene): heat-resistant and cold-resistant, it is the material for making bowl instant noodle boxes and foam fast food boxes. Microwaves cannot be put in, as the temperature will be too high to produce chemicals, so we need to reduce the use of fast food boxes to pack hot food.
7-AB (acrylonitrile butadiene): can not be used for food packaging, but before 2008, code 7 mainly refers to all plastics except 1~6, the plastic label of plastic milk bottles and water dispensers is usually '7'.
