Canadian Packaging

First scientific tests prove HDPE’s recycling properties

Tests show that High-density polyethylene (HDPE) can be recycled 10x or more.

January 24, 2018
by Canadian Packaging staff

THE NETHERLANDS—Dutch firm ESE World B.V. has carried out the first practical experiment to demonstrate that HDPE (High-density polyethylene) can be recycled at least 10 times and further processed under controlled conditions.

The company has been the leader in the use of recycled plastics for the manufacture of containers for waste and recyclables for over 30 years. Its advanced procedures and processes in the cleaning, additives and processing of the material enables ESE to make products from recycled plastics with the same quality as virgin material.

However, one question that has remained unanswered until now was how often HDPE could be processed, ground and reprocessed in injection molding procedures without fundamentally changing the structure and characteristics of the material.

ESE established a controlled experimental model at its production facility that enabled virgin HDPE to be reused 10 times. After each step the material was analyzed in cooperation with external research institutions using state-of-the-art methods. The project was led by ESE’s plastics specialist and scientist Jeanett Köhn, PhD.

The test demonstrated for the first time that the injection moulding process and shredding of the plastics have, in principle, no property-altering effects on the material over this entire period of reuse. With the service life of containers being around 10 to 20 years, this result means that the availability of material for sustainable production from the same recycled plastic is secured for at least 100 to 200 years.

ESE director of product development and marketing Udo Fröhlingsdorf is very pleased with the test results: “Decades of developments under production conditions have put us in the position to process and treat recycled material in such a way that the quality of the products is on a par with virgin material. The findings of this series of experiments now allow us to engage in more targeted research and to develop further future-oriented methods.”

Company information on ESE World may be found at

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