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  2. New recycling options for printed PP films

New recycling options for printed PP films

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By pr011 on Wed, 01/19/2022 - 11:10

This will open up new possibilities for recycling post-industrial printed film waste and potential for zero-waste production along the value chain of PP-based packag- ing for packaging manufacturers.

Alternative to non-food packaging made from virgin material

Kiefel has successfully thermoformed both coloured trays and cups from the re- cycled PP flat films, on the KMD and KTR series machines. "The machine set- tings practically did not have to be changed from processing of new material," emphasizes Olaf Tanner, Head of Project and Product Management in the Packaging division at Kiefel. "The shape, appearance and functionality of the deep-drawn, recycled pack- aging is so good that it represents a real alternative to non-food packaging made from virgin material."

In addition, with the increasing proportion of recycled material, savings of up to 20% in heating energy could be observed in the production of deep-drawn PP cups compared to virgin material. This effect can even be further enhanced through the use of dark recyclates due to the better heat absorption. 

This opens up interesting possibilities for packaging manufacturers to reduce the proportion of new materials in their containers to contribute to the climate and to save energy.

The recyclates have also been incorporated up to 100% into the middle layer of ABA flat film structures of different thicknesses (500 µm, 800 µm) without any issues. The use of extrusion technology, equipped with a single screw without degassing or a twin screw with degassing, has proven equally suitable for producing color films free of defects and odours with excellent thickness uniformity and stretchability.

PrintCYC is an initiative along the entire packaging value chain for the recycling of printed films. The consortium utilises fact-based industrial tests to showcase solutions for a circular economy of printed PP-based packaging films. The initiative includes the machine suppliers Brückner Maschinenbau. Kiefel and PackSys Global, Profol, the specialist for flat films made of PP (pol- ypropylene), the printing ink manufacturer hubergroup Print Solutions, and Erema, the specialist for recycling technology. The initiative is coordinated by Dr. Annett Kaeding-Koppers, an independent consultant for sustainable pack- aging solutions.

KIEFEL GmbH develops and produces high quality machines for processing plastics  recycled and, bio-based materials and natural fibers. Kiefel's customers include well-known manufacturers from the medical engineering, refrigerator and packaging industries. With its own technology and material centers, the company offers turnkey solutions and provides support in partnership from product development through machines and tools to service.

New recycling options for printed PP films
plastic packaging
material recycling
printed film
waste production
PP cups

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