(Photo credit: Gneuss Kunststofftechnik)

Melt Filtration Technology

Gneuss Kunststofftechnik: Efficiency increase in PET-recycling by retrofitting existing melt filter

Spanish PET bottle-to-bottle recycler sees major efficiency improvements by replacing melt filter - against a background of government rules prescribing the proportion of recycled polymer, the plastics strategy of the EU and the commitment of many market leaders to responsible use of polymers, the conversion or modification of extrusion lines represents an important trend. The German manufacturer of Filtration Systems, Gneuss, has seen a surge of interest among customers looking to retrofit their extrusion lines, despite the Covid-19 Crisis.

The expectations that Nosoplas placed on the retrofit with a Gneuss Rotary Filter have been completely fulfilled. Immediately after commissioning the units, a drastic reduction in in material loss due to back flushing was observed and, at the same time, the quality of the rPET granulate produced was noticeably improved.

RSFgenius back flushing filters as optimum retrofit solution for PET bottle flake recycling

The processing of PET Bottle Flakes presents particular challenges for Melt Filtration Systems. On the one hand, the post-consumer material source typically has a relatively high contamination level, on the other hand, the quality requirements (fine filtration) are very high – especially when the material is to be put back into transparent bottles for beverages.

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