Plastic granules are granular plastic materials, usually processed from new or recycled plastics, and are widely used in industrial production and daily life. According to their uses and characteristics, they can be divided into general-purpose plastics (such as polyethylene, polypropylene), engineering plastics (such as nylon, polytetrafluoroethylene) and special plastics (such as thermosetting plastics).

Definition and classification of plastic granules:

Plastic granules refer to granular plastic raw materials made by melting, extrusion, granulation and other processes, with a diameter usually greater than 2mm (different from microplastics). Its core classifications include:

General-purpose plastics: large output, low price, suitable for daily necessities. For example, polyethylene (PE) is often used for packaging films and containers, and polypropylene (PP) is used for fibers and toys. ‌‌

Engineering plastics: have characteristics such as high strength and heat resistance, such as nylon (PA) for mechanical parts and polytetrafluoroethylene (PTFE) for corrosion-resistant equipment. ‌‌

Special plastics: have unique functions, such as biocompatibility (artificial kidney materials) or conductivity. ‌‌

The raw materials of plastic granules can be divided into:

New materials: that is, virgin plastics, which have not been used. ‌‌

Recycled materials: recycled waste plastics are divided into first-class (close to new materials), second-class (one-time recycling), and third-class (multiple recycling) according to quality. ‌‌

Plastic granules are used in many industries:

Packaging: PE granules are made into films, bottle caps, etc. ‌‌

Construction: PVC granules are used for doors, windows, and pipes. ‌‌

Medical: Special granules are used for artificial organs.