What is polyethylene plastic pellets?
Polyethylene plastic pellets refer to small, spherical/irregular granular semi-finished products of polyethylene (PE) resin, Its abbreviation is PE pellets ，they are formed by melting, extruding and granulating virgin polyethylene raw materials through industrial processes. They are the basic raw material for manufacturing various polyethylene plastic products, featuring excellent chemical stability, low density, good toughness and processability, and can be further processed by injection molding, blow molding, extrusion, foaming and other processes to produce plastic films, pipes, containers, packaging and other finished products. It can be classified into multiple variants ,such as Lightweight PE，Excellent chemical resistance PE，Good impact resistant PE，Toughness PE，Waterproof PE，Moisture resistant PE，Abrasion resistant PE，Low water absorption PE，Low water absorption PE，Electrical insulation PE,Heat sealable PE,Recyclable PE,Food-safe PE,Non-toxic PE and so on.
Advantages of polyethylene plastic pellets
It features excellent low density and lightweight performance with a density lower than water, effectively reducing the weight of finished products and saving raw material consumption. It has superior chemical resistance, resisting corrosion by most acids, alkalis and organic solvents, and remains stable in harsh chemical environments. With good toughness and impact resistance, it is not easy to crack or break, presenting outstanding anti-fall and compression resistance. It also boasts excellent processability, being easily processed into various products through injection molding, blow molding, extrusion, foaming and other processes. Moreover, it has good moisture and air tightness, and is widely applicable to waterproof and sealed packaging fields. Food-grade PE is non-toxic and tasteless, in line with food safety standards for food packaging and food contact products. It has low production cost and high cost performance, and is one of the most economical general plastics on the market.
Disadvantages of polyethylene plastic pellets
It has poor heat resistance with a low heat distortion temperature (60–90℃), easily deforming and softening at high temperatures, which limits its application in high-temperature working environments. It has low surface hardness and poor scratch resistance, so the surface of finished products is prone to scratches and wear marks. It also has poor weather resistance, aging, discoloring and becoming brittle under long-term UV radiation, and needs anti-aging agent modification for outdoor use. It has certain cold brittleness, with toughness dropping sharply and cracking easily at temperatures below -20℃. It cannot bond well with most adhesives, requiring special surface treatment such as corona for bonding. Besides, it is flammable, burning with dripping and open fire, and flame retardant must be added for fire protection requirements.
APPLICATION
