High-Density Polyethylene HDPE

By volume, polyolefins account for around half the world's thermoplastic polymer production. This family comprises various types of polypropylene and polyethylene. These include high-density polyethylene, which is widely used in France and around the world.

Since its discovery in the 1960s, high-density polyethylene has established itself in numerous applications thanks to its intrinsic properties, which are constantly being improved by the development of new manufacturing processes and catalysts.

Today, when you buy a bottle of milk, a reusable plastic bag, a bottle of shampoo or a jug of washing powder, chances are they're made from high-density polyethylene.

Other more specific applications include fuel tanks, which offer a number of advantages over older steel tanks, including greater safety, optimum space utilization and weight savings. Today, the vast majority of automotive fuel tanks manufactured in Europe are made of high-density polyethylene.

Another lesser-known, and therefore less visible, sector is that of drinking water and gas distribution, which is largely carried out in high-density polyethylene pipes. With an estimated lifespan of over 50 years and ease of installation, these pipes have in some cases replaced more traditional materials such as ductile cast iron or concrete.

Last but not least, large containers for storing fuel oil or rainwater are manufactured by extrusion blow-molding or rotational molding.

The aim of this article is to provide an overview of high-density polyethylene, from polymerization through characterization and processing to commercial use.