Hybrid beverage packaging exposes a gap in Poland’s deposit system

A new type of beverage packaging combining a plastic body with an aluminium lid is appearing on the Polish market, but does not currently fall within the country's deposit return system. The Polish Recycling Association warns that the issue goes beyond a regulatory loophole, as the packaging also lacks a dedicated domestic recycling route.

Often described as a "PET can", the format combines a body made from polyethylene terephthalate (PET) or polypropylene (PP) with an aluminium lid using an opening mechanism similar to that of a conventional metal can. While the format may offer a different packaging experience, its combination of materials creates challenges for both regulation and recycling.

A packaging format that falls between categories

Poland's deposit system applies to beverage packaging made from plastic or metal. However, packaging with a plastic body and aluminium lid does not fit neatly into either category. It is not considered a metal can, while its construction also prevents it from being treated as a conventional single-use plastic bottle.

This creates a regulatory grey area in which packaging can resemble a product covered by the deposit system without actually being subject to it. The Polish Recycling Association argues that this could establish a precedent for other packaging formats designed around the boundaries of existing legislation. :contentReference[oaicite:0]{index=0}

The recycling problem goes beyond the deposit

Including hybrid packaging in the deposit system would not, by itself, solve the problem. According to the Polish Recycling Association, Poland currently has no industrial installation specifically designed to separate these packages and recover both the plastic body and aluminium lid as usable raw materials.

Although sorting facilities can technically separate plastics and aluminium, Poland's recycling infrastructure is organised primarily around individual material streams. A package permanently combining two materials with different recycling processes does not fit efficiently into either stream.

Valuable materials can be lost

In practice, hybrid packaging placed in the recycling system is classified according to its dominant material, which is generally plastic. The aluminium component can consequently be lost, while contamination with metal can also reduce the quality and value of the recovered plastic.

This creates a particularly problematic outcome: a package containing two potentially valuable recyclable materials can ultimately prevent effective recovery of both. Instead of returning the materials to the production cycle, the packaging may end up in waste treatment outside recycling. :contentReference[oaicite:1]{index=1}

A precedent for packaging design

The Polish Recycling Association considers the emergence of hybrid packaging a wider regulatory concern. If changing one component, such as the lid material, is enough to avoid deposit obligations, manufacturers could potentially develop increasingly complex formats around the boundaries of the legislation.

Similar concerns could arise from changing other parameters, such as packaging capacity, to remain just outside the thresholds established by the deposit system. This could place companies using conventional mono-material packaging at a competitive disadvantage while creating additional challenges for recycling infrastructure.

Calls for broader producer responsibility

The Polish Recycling Association is calling for all beverage packaging to be included in the deposit system regardless of its construction. Under this approach, the intended use of the package would be more important than the material that dominates its structure.

The organisation also argues that multi-material packaging should be incorporated into Poland's planned Extended Producer Responsibility (EPR) system, with fee modulation designed to reward mono-material formats and packaging that is easier to recycle.

Packaging design must consider recycling from the start

The case highlights a broader principle for packaging development: recyclability cannot be considered only after a package reaches the market. Packaging design needs to take existing collection, sorting and recycling capabilities into account from the beginning.

For Poland, the emergence of hybrid beverage packaging illustrates the difficulty of regulating increasingly diverse packaging formats through definitions based primarily on individual materials. Closing these regulatory gaps while developing suitable recycling infrastructure will be essential if new packaging formats are to contribute to, rather than undermine, the circular economy.