The exponential growth of the ready meal sector presents recyclability and sustainability challenges and opportunities for the packaging industry. KM Packaging business unit director John Shipley says flexible packaging has a huge role to play. This article first appeared in the July 2021 issue of Food and Drink Business.
Flexible packaging is lightweight, resource-efficient, and plays an essential role throughout the supply chain, ensuring products are well-protected, presented, and preserved.
In ready-meal packaging applications, PET lidding film is designed to protect, present, and preserve our food. It offers tamper evidence and security, and ease of opening, while also allowing the lid to remain on the tray during cooking. It follows optimised packaging design, uses minimum resources, and delivers a high level of functionality.
Sadly, at this time, most flexible packaging is not collected and recycled at the kerbside and there is only limited and restricted non-kerbside collection, resulting in significant residual “value” literally going to waste in landfill.
This issue presents both challenges and opportunities for our industry as we all work towards the 2025 National Packaging Targets of the Australian Packaging Covenant Organisation (APCO), of which KM Packaging is a proud member.
As I see it, four key areas require the most attention to drive forward recyclability and sustainability of flexible packaging.
Need for informed design choices
First is the need for more informed design choices, including material, coatings, size, shape, inks, and adhesives.
One solution is to simplify the structure used by moving from mixed polymer laminate structures to easier-to-recycle mono plastics. This approach addresses multi-layered, multi-polymer packaging that is most difficult to recycle.
However, we must be careful – using less complex structures can result in reduced functionality and an increase in food waste. Rather, the focus should be on optimising structures for better long-term recyclability and sustainability, without jeopardising shelf life.
Of course, to be able to recycle, material needs to be collected in the first place. Progress is being made to increase the recovery of some flexible packaging and the REDcycle program, of which KM Packaging is also a member, is notable.
However, this scheme includes only polyolefins, such as PE and PP, or laminations with a minimum of 70 per cent PE or PP content.
Consumers need to use and understand the Australasian Recycling Label (ARL) to self-sort their packaging, as well as negotiate the confusion that often surrounds other soft plastics, such as PVC, nylon and bioplastics. With a lack of kerbside collection and mainstream composting infrastructure, bioplastics run the risk of being either landfilled, or worse still, contaminating the recycling stream.
Polyolefins make up more than 80 per cent of post-consumer flexible packaging, so focusing attention here makes perfect sense, but we should not stop there.
Progress on PET
Although a relatively small part of overall flexibles by volume, heat-sealable lidding film based PET falls into the harder-to-recycle category, and is currently only accepted through REDcycle where they account for less than 30 per cent of the overall weight of the film.
PET has some really important functional attributes, not present in polyolefins. Its qualities include high heat resistance, high oxygen barrier, strength, and direct food contact safety at elevated (conventional oven) temperatures, which make it the ideal material choice for lidding frozen, chilled, and ambient ready-meals, and convenience product trays.
Additionally, PET can be recycled directly back into food packaging, a truly circular approach. This is already widely done with rigid containers, such as PET drink bottles, rPET and cPET food trays.
In contrast, soft or rigid PE and PP cannot go back into food packaging. They are recycled at lower value into non-food products like traffic cones and garden furniture.
Flexible packaging contributes strongly to greater sustainability from field to fork.
If we focus on the design of our products, collection systems, and recycling infrastructure – and above all recognise the value of flexible packaging – we can achieve our targets for recyclability, greater sustainability, and create a better planet.