July 10, 2025
Plastics Specialist
Polyethylene (PE) is a thermoplastic resin made by polymerization of ethylene monomer, which is mostly solid at room temperature, but can be presented as molten liquid and molded under specific processing conditions. It has excellent chemical stability, low temperature resistance, electrical insulation and processing performance, and relatively low price, is currently the world's largest production, one of the most widely used plastic varieties.
According to the different density and molecular structure, polyethylene can be mainly divided into low density polyethylene (LDPE), high density polyethylene (HDPE) and linear low density polyethylene (LLDPE).
Low-density polyethylene (LDPE) has a soft texture, high transparency, good flexibility and elongation, and strong impact resistance. In the field of packaging, LDPE is an important material for the production of plastic film, such as food packaging film, agricultural film, etc., which is thin and light and has a certain degree of permeability, can well meet the packaging needs; can also be used for the production of plastic bags, because of its good flexibility, easy to carry and use. In daily necessities, LDPE can be made into hoses, toys, such as children's water toys, safe and not easy to damage.
High-density polyethylene (HDPE) has higher density, higher hardness and strength, excellent abrasion and chemical resistance, and good moisture resistance. In the packaging industry, HDPE is often used to make plastic bottles, such as milk bottles, detergent bottles, etc., can withstand a certain degree of pressure, and good sealing, can effectively protect the contents; can also make plastic crates for the transportation and storage of goods, because of its high strength, it can be reused many times. In the construction field, HDPE pipes are widely used in water supply, drainage, gas transportation and other systems due to their strong corrosion resistance and long service life. In addition, HDPE can also be used to make safety helmets, fishing nets and other products.
Linear Low Density Polyethylene (LLDPE) combines the flexibility of LDPE with the strength of HDPE to provide better resistance to puncture, tearing and stress cracking. In agriculture, LLDPE can be used to make mulch film, which is highly puncture-resistant and can effectively resist damage from stones and other debris in the soil, while retaining moisture and helping crops grow. In packaging, LLDPE is often blended with LDPE to make films for packaging heavy goods, such as pallet wrap, which can tightly wrap the goods and prevent them from falling apart during transportation. In addition, LLDPE can also be used to make garbage bags, corrugated pipes and other products.
In addition to the common types mentioned above, there is also ultra-high molecular weight polyethylene (UHMWPE), which has extremely high molecular weight and therefore possesses excellent abrasion resistance, impact resistance and self-lubrication, and can be used to make bearings, guide rails, artificial joints, and other high-end products, which play an important role in the fields of machinery and medical treatment.
Overall, polyethylene has an irreplaceable position in many fields such as packaging, agriculture, construction, daily necessities, medical care and so on, thanks to its diverse characteristics, which greatly facilitates people's productive life.
Choosing Ningbo Chaohe Plastic Co., Ltd as a supplier of polyethylene raw materials, you will enjoy high quality products and excellent service.