No. 1. PET:
Commonly known as PET bottles, it accounts for the largest volume of plastic recycling products, and it is also the type that we buy and use most frequently. If there is a recycling room in the community that cooperates with manufacturers, you can usually see that the bottles are separated and set up with a recycling box. PET products are integrally formed by blowing. If you pick up the PET bottle, you can see a dot at the bottom of the bottle, which is like the place where the plastic take-up line is knotted.
No. 2. HDPE:
HDPE has good chemical resistance, can come into contact with food, and is easy and low-cost to process. It can even add anti-UV to strengthen its weather resistance and use as amusement equipment in the park. And the material is thicker and harder than PET, and it is mostly used to hold dairy products, cleaning liquids, etc. on the container. The plastic chopping board used for cutting vegetables and meat in the kitchen also belongs to high-density polyethylene. It is a strong and heat-resistant plastic (can withstand a high temperature of 90~110 degrees).
No. 3. PVC:
PVC is the only chlorine-containing plastic among the five major plastics (PE, PVC, PP, PS, PET). Because of the chlorine content, the softness of the product can be changed by adding plasticizers. PVC without any plasticizers is very hard, but PVC with plasticizers can be as soft as plastic wrap. Because of the characteristics of changing the softness, in addition to reducing the technical threshold and cost of production, it is also easy to derive PVC for various purposes. However, the heat resistance of PVC is poor, and stabilizers must be added in general manufacturing, usually heavy metals, so it is called poisonous plastic by many people. PVC supplies can be found in dishwashing detergents, mouthwashes, etc.
No. 4. LDPE:
Low-density polyethylene is a flexible version of HDPE, which has good chemical resistance and can come into contact with food. Therefore, it is often used to make plastic bags, plastic wrap, etc., and is used to make many medical equipment and medicine packaging bags. Because of the low density, the heat resistance is low, about 70~90 degrees.
No. 5. PP:
The appearance of PP raw materials is white particles, odorless and non-toxic. Due to the complete crystal structure, it has the advantages of easy processing, impact resistance, bending resistance, and good insulation. It is widely used in the automotive industry, household appliances, electronics, packaging, and building materials and furniture. Applications. PP is also a common plastic container, which is more opaque or translucent in appearance and harder in the material. The characteristics of PP are acid and alkali resistance, chemical resistance, and the advantages of collision resistance.
PS is common plastic styrofoam. The characteristic of PS is that it is easy to break, and if it is hit, there will be cracks. Many businesses use PS as a container for ice preservation or choose to use PS for heat resistance. However, Styrofoam is a plastic that is difficult to decompose, and it is difficult to make other useful products. Friends who pay attention to environmental protection, try to avoid using styrofoam-related packaging products.
No. 7. OTHER:
Other plastic products other than the above 6 plastics will be classified as No. 7 in terms of recycling, such as low-carbon environmentally friendly bottles NPP and PLA commonly used in containers. Its source is corn, beet, and other plants. Extraction After the starch is obtained, it is fermented and dewatered, and then made into PLA plastic.
After the above introduction, please pay more attention to the types of plastics, and remember the basis of classification when recycling.