Germany's University of Bayreuth researchers discover a unique method for recycling APL

Researchers from the University of Bayreuth in Germany have brainstormed a brand new method of recycling aluminium-plastic composite (APL) films, usually found in packaging solutions for potato chips worldwide. Through this newly discovered novel process, researchers are recreating energy-efficient cooling films with the used APL potato chips packets. 

Prof Markus Retsch from the University of Bayreuth, Germany, has been leading this revolutionising process with his team of gallant experts. The process he has developed upcycles the end-of-life APL films while lessening the amount of carbon emitted during conventional recycling processes.

The APL packages can be revamped to create high-performance cooling films with a simple coating atop. The transformed modules can be crucial in encumbering global carbon emissions due to their varied usage in cooling systems.

Recycling aluminium-plastic composite (APL) was a time-consuming and costly affair. Moreover, due to the amalgamation of plastic and aluminium, it was previously very difficult to separate the two for distinct recycling processes. Yet APL is the go-to material for the food packaging industry at large.

This futuristic upcycling process promotes the complete recycling of APL waste alongside decreasing energy consumption globally.

At present, cooling systems take up almost 15 per cent of the world’s energy usage, a number that might increase in the upcoming era, creating unavoidable consequences of climate change.

The innovative approach taken in this new aluminium layer of APL packaging lies in the coating, which acts as a reflective medium, quite close to space blankets. Its combination with plastic turns the module into a heat-redundant material, deflecting thermal radiation, thus transforming it into a perfect cooling system.

The refurbished aluminium foil can be used in different outdoor settings, such as awnings and umbrellas, to obviate extreme sunlight and divert atmospheric heat into cooler surfaces without external energy use, a scientific derivation called “passive daytime cooling.”

The University experts proudly displayed the potential of their work with the help of potato chips bags sold in retail. They pointed out that the new aluminium layer could deflect almost 87% of the sunlight. The polymer coating is vital in directing the heat straight into space as it amplifies radiation.

When designed for commercial and industrial applications, this upcycling method can ultimately alter how we recycle waste, curtailing excessive energy consumption. If you wish to learn more about the global aluminium recycling scenario, please have a look at AL Circle's World Recycled Aluminium Market Analysis. For other comprehensive industry reports please visit our website.