The following is an introduction to the classification and use of plastics corresponding to the specific numbers on the bottom of plastic bottles.

1. “01”—PET (polyethylene terephthalate)

Mineral water bottles and carbonated drink bottles are made of this material and are heat-resistant to 70°C. , is only suitable for holding warm or frozen drinks. It will be easily deformed when filled with high-temperature liquids or heated, and substances harmful to the human body may be leached out.

2. “02”—HDPE (high-density polyethylene)

Plastic containers for cleaning supplies and bath products. Most of the plastic bags used in supermarkets are made of this material and can withstand high temperatures of 110°C. Plastic bags marked as food can be used to hold food.

3. “03”—PVC (polyvinyl chloride)

Plastic products made of this material are prone to produce toxic and harmful substances, such as single-molecule vinyl chloride and harmful substances in plasticizers. things. Therefore, it is not suitable for packaging food.

4. “04”—LDPE (low-density polyethylene)

Cling film, plastic film, etc. are all made of this material. The heat resistance is not strong, and hot melting will occur when it exceeds 110℃. Therefore, before food is put into the microwave oven, the plastic wrap must be removed first.

5. "05" - PP (polypropylene)

Microwave lunch boxes are made of this material and are the only plastic boxes that can be placed in microwave ovens. Special attention should be paid to the fact that the lids of some microwave lunch boxes are made of No. 06 PS (polystyrene) plastic. The lids must be removed before putting them in the microwave oven.

6. “06”—PS (polystyrene)

This is the material used to make bowl-type instant noodle boxes and foam fast food boxes. It is heat-resistant and cold-resistant, but cannot be placed in a microwave oven to avoid releasing chemicals due to excessive temperature. And it cannot be used to hold strong acids (such as orange juice) or strong alkaline substances, because it will decompose polystyrene that is not good for the human body.

7. “07”—PC and others

PC is a material that is widely used, especially in the manufacture of baby bottles, space cups, etc. In daily life, PC water bottles should not be used to hold hot water.

Extended information:

Plastic bottles are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents. Plastic bottles widely use polyester (PET), polyethylene (PE), and polypropylene (PP) as raw materials. After adding corresponding organic solvents, they are heated at high temperatures and then blown, extruded, or injection molded through plastic molds. plastic container.

Mainly used for liquid or solid disposable plastic packaging containers such as beverages, food, pickles, honey, dried fruits, edible oils, agricultural and veterinary drugs. Plastic bottles have the characteristics of not easily broken, low cost, high transparency, and food-grade raw materials.

Plastic bottles are made of polyester (PET), polyethylene (PE), and polypropylene (PP) as raw materials. After adding corresponding organic solvents, they are heated at high temperatures and blow molded through plastic molds. , extrusion blow, or injection molded plastic containers. Plastic bottles have the characteristics of not easily broken, low cost, high transparency, and food-grade raw materials.

When using plastic products, pay special attention to avoid contact with vinegar, detergents, etc., and avoid direct sunlight, high temperatures, etc. to avoid chemical reactions. In addition, when buying plastic tableware, you should choose plastic products with PE (polyethylene) or PP (polypropylene) markings on the products, few decorative patterns, colorless and odorless, and smooth surfaces.

Baidu Encyclopedia-Plastic Bottle