Petrochemical Product Plastic Raw Materials


Polyethylene is one of the most commonly used plastics in the world. It can be noted that over 100 million tonnes of polyethene is produced on an annual basis for commercial and industrial purposes. Most types of polyethylene are thermoplastic . However, some modified polyethylene plastics exhibit thermosetting properties. The melting points of commercial grades of high-density polyethylene (HDPE) and medium-density polyethylene (MDPE) lie in the range of 120-180 degrees Celsius. The melting point of the commercially available low-density polyethylene (LDPE) usually lies in the range of 105-115 degrees Celsius. Polyethylene is known to be a very good insulator of electric current since it offers high electrical treeing resistance.

Types of Polyethylene

Polyethylene can be classified into several different types based on the density of the plastic and the degree of branching in its structure. The type of branching and the extent of branching has a direct impact on the mechanical properties of the plastic. Some important types of polyethylene are listed below. 

  • High-density polyethylene (HDPE)
  • Low-density polyethylene (LDPE)
  • Linear low-density polyethylene (LLDPE)

Uses of Polyethylene

LDPE Low-density polyethylene  is widely used in the production of squeeze bottles, garbage bags, laminations, and food packaging due to its high flexibility and low cost.

LDPE is also used in pipes and fittings. It is ideal for such applications due to its low water absorption and also due to its plasticity.

Polyethylene is also used for cable jacketing since it is a good insulator of electric current.

HDPE High-density polyethylene is used in toys, garbage containers, ice trays, and other houseware. The versatility of this plastic makes it ideal for a wide spectrum of applications.

HDPE is also used in ropes, fishing nets, agricultural nets, and industrial fabrics. It is not uncommon for this plastic to be used in wirings and cables as well.

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