Published: August 2, 2018 | Last updated: July 5, 2023

What Does Polyethylene Mean?

Polyethylene is the most commonly used plastic compound. It is a thermoplastic polymer consisting of variable types crystalline structures. Due to its diverse amount of variants, polyethylene can be used in an extremely large range of applications.

One of the most useful attributes of polyethylene is its ability to be melted, cooled, and reheated again without significant degradation. Unlike other plastics, which burn when subjected to heat, polyethylene liquefies, allowing it to be easily molded and recycled.


Trenchlesspedia Explains Polyethylene

There are several variations of polyethylene depending on its density and branching. Some of the most common types of polyethylene are:

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

Overall, polyethylene has lots of distinct desirable properties, these include:

  • Relatively light weight
  • Excellent durability
  • Cost-effectiveness
  • Electrical resistance
  • Corrosion resistance

These properties make polyethylene a suitable material for sliplining. Polyethylene pipes are joined together by butt fusion, bell and spigot joining, or by extrusion welding. This pipe is then inserted into the host pipe to form a new structural pipe lining. This provides a cost-effective means of rehabilitating pipes with minimum excavation and disruption.


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