Three minutes to teach you how to classify ordinary plastic products

Three minutes to teach you how to classify ordinary plastic products
Although plastics are difficult to decompose and pollute environment, it cannot be denied that now we can not do without plastics, so plastic recycling has now become a good way to reduce environmental pollution, and for plastic recycling, we must learn to give plastics Product classification, let's take a look at classification of common plastic products.

1. PET/PET (polyethylene terephthalate)

Three minutes to teach you how to classify ordinary plastic products

PET/PET is often used for mineral water bottles, beverage bottles, oil bottles, medicine bottles, etc. It has good transparency and is often used as food packaging material. But because heat resistance is not good, it is easily deformed when used at high temperature, and may release toxic substances, so it cannot be used for hot drinks, and it is not recommended to use it repeatedly. Toxic substances may also be precipitated after repeated use.

After PET/PET is recycled, it cannot be used for processing and production of bottles for food packaging. It is mainly used to make products from polar fleece or fiber, which are used in textiles, carpets, life jackets, sleeping bags, shoes. , luggage, auto parts, storage boxes, winter coats and other products.

2. PE (polyethylene)

Three minutes to teach you how to classify ordinary plastic products

Polyethylene can be divided into high-density polyethylene, low-density polyethylene and linear low-density polyethylene based on molecular weight and chain structure. Common low-density polyethylene products include agricultural film, industrial packaging film, garbage bags, pharmaceutical packaging film , cable insulation, coating, synthetic paper, etc.

Common HDPE products include: detergent bottles, shampoo bottles, detergent bottles, shower gel bottles, plastic toys, ropes, pipes, braided fibers, etc. Common LPE products low density are: stretch film, plastic bags, etc.

After recycling, polyethylene materials can be used to make wood-plastic panels, fences, covers, non-food bottles, plastic buckets, wires and cables, trash cans, etc.

Polyethylene materials are widely used in everyday life, and manufactured products can be recycled and reused many times. However, the annual recycling rate of polyethylene products in China is only about 12%.

3. PVC (polyvinyl chloride)

Three minutes to teach you how to classify ordinary plastic products

PVC will add various additives during production, so products produced contain some substances harmful to human body. However, PVC is still one of most used plastic materials in world due to its low price and wide range of applications. Common PVC products include: water pipes, shower curtains, furniture films, decorative materials, clothing, etc.

The annual recovery rate of PVC materials is about 1%, which is very low. Recycled PVC can be used to make wood-plastic floors, skirting boards, wire sheaths, billboards, rollers, roll-up doors, gloves, decorative items, etc.

4. PP (polypropylene)

Three minutes to teach you how to classify ordinary plastic products

The polypropylene material itself is characterized by high density, no side chains and excellent complex characteristics. Medicine bottles, etc. The heat resistance of PP material can reach over 100 degrees, and it is only plastic product that can be heated in a microwave oven. Recycled polypropylene materials will not be used for food processing and are often recycled into products such as brushes, hangers and battery cases.

5. PS (polystyrene)

Three minutes to teach you how to classify ordinary plastic products

PS, often referred to as expanded polystyrene, is a colorless and transparent thermoplastic that is often used to make disposable containers or disposable Styrofoam lunch boxes. PS common products include: styrofoam disposable coffee cups, styrofoam lunch boxes, instant noodle boxes, etc. Recycled polystyrene products are mainly used in thermal insulation materials, flower pots, toys, various appliance shells, lampshades and other products.

6. PC (polycarbonate)

Three minutes to teach you how to classify ordinary plastic products

PC has now become fastest growing general purpose engineering plastic among top five engineering plastics. It has characteristics of weak acid resistance, weak alkali resistance and neutral oil resistance. Recycled polycarbonate materials can be used in oil pump. dials, car dashboards, sockets, plugs, bushings, gaskets, hair dryers, vacuum cleaners, refrigerator shelves, junction boxes, door frame covers and other products.

Although food-grade polycarbonate materials are safe and non-toxic, according to research, BPA can precipitate after long-term use, which is why some high-quality water glasses no longer use polycarbonate materials. it is recommended to use polycarbonate cups to hold water. Pour boiling water over.

Three minutes to teach you how to classify ordinary plastic products

The above is classification of common plastic products. In addition to above-mentioned widely used plastic materials, there are many other materials in plastic products, such as ABS, POM, PU, ​​PF, PETG, GAG, etc. .

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