Pla.to Technology presents a new separation system at the K fair that reduces the proportion of downcycling in packaging films made of multilayer materials. The process is suitable for edible plastic films, the so-called fraction 310, and allows a physical cycle from film to film.
It is characterized by high separation efficiency and high volume throughput, making it economical to recycle films with low bulk densities. The system is suitable for series production and is based on simple and resource-saving technology. It does not require the use of complex NIR classification technology or water.
Pla.To Technology will present its new separation process at the Fair from October 19 to 26 at Hall 9, Stand D17, where the company will also showcase its newly introduced first industrial solution for recycling polyethylene cosmetic bottles. High Density (HDPE) )
Pla.to Technology presents at K Fair an innovative system that reduces the decycling rate in packaging films made of multilayer materials. The photo shows the separator (Photo: Pla.to Technology).
Recycling specialist Pla.to developed the separation process within the framework of a joint research project with the University of Science’s Institute for Process Development, Recycling Management, Surface Technology and Natural Materials Research (Zirkon). Applied Ziteau-Grlitz. This contributes to the recovery of polyethylene for its sustainable recycling and to close the physical cycles of the respective polymers.
The process is based on two steps: in the first, a new conditioning process modifies the aerodynamic properties of the monolayer and multilayer films to varying degrees. This allows the material to be classified in a second pass to the air screen. To make this separation possible, Pla.to has optimized the separator for the material to be processed and optimized it to have a low bulk density.
Parts after mixing the air-screen material with multilayer films (Photo: Pla.2 Technology).
Among other things, this process has been tested with mixtures of genuine materials, such as Green Dot 310 film fragments, obtained from the post-consumer sector. The polyethylene (PE) recovered in this way was not only converted into reusable granules, but was also successfully used to blow up new films, completing the film-to-film cycle.
The material cycle from film to film: extrusion of film with granules obtained from recycled multilayer films (Excerpt 310) with the help of the new Pla.2 Separation System (Photo: Pla.2 Technology)
Plastic films continue to dominate food packaging. They keep ingredients fresh and protect the aroma and appearance from environmental influences. For this, high-performance laminates are used, which are composed of multiple layers of film bonded together, which combine different protection properties with less contribution to the material. Although their market share has increased in the past, these multilayer sheets are particularly problematic in terms of their recyclability.
Unlike single-layer materials, such as films made from polyolefins, for example polyethylene or polypropylene (PP), they cannot be simply melted and recycled because the different polymers are often not mixed. Therefore, downcycling is usually done, which provides only a small added value to recycling companies.
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