What are the options for plastic milling materials?

Plastic milling is a common plastic recycling method, which can physically or chemically process waste plastics to obtain reusable plastic particles, which can be used again to make new plastic products. However, before plastic milling, it is necessary to select the appropriate plastic material. Because different plastic materials need to use different processing methods and equipment in the preparation process, the correct selection of plastic materials is crucial. This paper will introduce several common plastic grinding materials as well as their characteristics and uses.

1. High Density Polyethylene (HDPE)

High-density polyethylene (HDPE) is a general-purpose material commonly used in the manufacture of plastic bottles, baby bottles, pipes, and some chemical and packaging products. This material is characterized by high hardness, good heat resistance, chemical corrosion resistance, and excellent impact resistance and machinability. The ground powder particles prepared from this material are usually used in the manufacture of parts, containers, drums, etc.

2. Sponge polyvinyl chloride (SPVC)

Sponge polyvinyl chloride is a lightweight sponge material with good flexibility, impact resistance, wear resistance and sound insulation properties, and also has good flame retardant properties. The ground powder particles prepared by this material are usually used in the manufacture of automobiles, shoe materials, filling materials, etc.

3. Polypropylene (PP)

Polypropylene is often used in the manufacture of plastic packaging boxes, water tanks, horseshoes, etc., it is characterized by high hardness, low density, good cold resistance, and good chemical corrosion resistance and wear resistance. The ground powder particles prepared by this material are usually used to manufacture parts such as automobiles, instruments, and electrical appliances.

4. Plastic foam

Plastic foam is a lightweight, flexible material with good shock absorption and insulation properties. Commonly used plastic foam are polyurethane foam, polystyrene foam and so on. The ground powder particles prepared by this material are usually used to manufacture seat cushions, insoles, filling materials, etc.

5. Polystyrene (PS)

Polystyrene is a transparent, hard material that is often used in the manufacture of plastic cups, plates, tableware and so on. The ground powder particles prepared by this material are usually used to make thermos cups, handles, etc.

6. Polyvinyl Alcohol (PVA)

Polyvinyl alcohol is a kind of material with good degradability and solubility, which is usually used in the manufacture of disposable tableware, medical equipment and so on. The ground powder produced by this material is usually used to make environmentally friendly materials.

In summary, plastic grinding processing needs to be selected according to different material characteristics and use needs, in order to produce better recycled materials.