Polyethylene (PE) is a macromolecule formed by the polymerization of olefin monomer units and belongs to the largest family of polyolefins. One of the methods to process PE is extrusion. In the extrusion process Polyethylene has a melting point range of 120 to 180 degrees Celsius for medium to high density PE and 105 to 115 degrees Celsius for low-density polyethylene. The good heat resistant properties enable it to be used in high and low temperatures.
Due to its high production volume, up to 100 million tons per year on a worldwide basis, and its versatility, it’s by far the most present polymer in our daily lives. Its structure is very simple, a long chain of carbon atoms with two hydrogen atoms bonded to each carbon atom. Offering a unique combination of useful properties at a low price, polyethylene has quickly become the polymer with the highest production volume in the world.
- High toughness
- High chemical resistance
- Low water vapour permeability
- Good electric insulator,
- Very low water absorption
- Ease of processing
When talking about polyethylene, we should consider that this polymer is divided into different types depending on the:
- molecular weight
- degree of branching
These characteristics, which can be modified during the production of the polymer itself, have a significant impact on the technical specifications of the final product, improving a number of parameters and making it perfect for some specific applications.