The results of research to enable further developments towards establishing recycling options for flexible plastic packaging have been delivered by the two-year REFLEX R&D project.
The project is a collaboration of the whole value chain, from polymer production, packaging manufacturers, global brand owners, to waste management and recycling companies. According to resource recovery company, Axion Consulting, which led the consortium of various value chain participants, the ability to recycle this type of packaging at end of life will be “moving forward” following successful research and trials.
Axion worked with its partners in the REFLEX project; Amcor Ltd, Dow Chemical Company Ltd, Interflex Group, Nestlé UK Ltd, SUEZ, TOMRA Sorting Ltd and Unilever.
The consortium’s research took into account the commercial value of materials recovered by the recycling process and demonstrated that attractive yields of recycled materials could be achieved. The project has addressed many technical challenges in establishing an infrastructure to collect, sort and recycle polyolefinic flexible packaging in the UK. For example, along with improvement of flexible packaging designs, the project looked at digital watermarking on packaging that is suitable for mechanical recycling and the use and enhancement of near infra-red sorting technologies.
Improve The Economics
“We think that these changes and further technology optimisation can improve the economics of recycling flexible packaging and make the concept more attractive to investors and recyclers,” comments Axion Consulting Senior Engineer Richard McKinlay.
Practical trials have shown that recovered polymers can deliver the performance requirements and technical properties needed for items such as boxes and crates or drainage pipe products. Richard believes this will boost confidence in the market and encourage more investment.
“Flexible packaging excels in terms of material efficiency,” says Gerald Rebitzer, Director Sustainability for Amcor. “This creates a cascade of environmental benefits throughout the entire value chain, and avoids waste at source. What is still in its infancy is an end-to-end solution for this packaging type. This research could help close that gap.”
Guidelines aimed at providing information to packaging designers and technologists, brand owners, retailers and converters to design flexible packaging that is suitable for mechanical recycling have been developed. As more work is needed on investigating and evaluating the compatibility of all the various materials, the guidelines will not be released until further testing work has been completed and validated at European level.
Roger Morton, Director of Axion Consulting comments: “The REFLEX project demonstrated how state-of-the-art technology in sorting and preparation for recycling can help increase the rate of flexible packaging recycling. It also showed how novel packaging designs and potential new marking techniques may further increase recyclability and efficiency of the whole process.”
As the two-year project comes to a close, Roger explains that the next steps will be a ‘wider collaboration with more brand owners and converters and with more input from waste management companies and recyclers across Europe, to finalise and validate the design guidelines for recycling’.
He says: “It is pivotal that the value chain works together to address the challenge of flexible packaging recycling. Technical advances made in the REFLEX project and the guidelines should help the plastic packaging value chain in future to manage better the end of life packaging and progress towards a more circular model.
“Used flexible packaging is an important resource waiting to be mined for high quality materials with the potential to be recycled into all kinds of long-life applications from automotive products to rotational/ injection-moulded items.”
The consortium also welcomes the creation of a new European stakeholder platform that will focus on increasing recycling levels of plastic packaging, which has support from Plastics Europe, Plastics Recyclers Europe and European Packaging Converters.