Solutions for post-consumer and post-industrial recycling
Gneuss, Chinaplas 2025 – Hall 10 Booth A07
Gneuss, a global leader in plastics recycling and processing headquartered in Germany, will focus on OMNI Recycling Systems, Rotary Filtration Systems and MRS Extruders – technologies that are claimed to set standards in efficiency, sustainability and cost-effectiveness in plastics processing.
OMNI recycling systems
The OMNI recycling systems are suitable for post-consumer and post-industrial recycling. They are designed to process a wide range of plastics such as polyester (PET), polystyrene (PS), polypropylene (PP) and polyethylene (PE) into high-quality end products and are used worldwide. Decontamination of post-consumer waste for direct food contact products is a key application for OMNI systems. Typical applications include besides PET bottles also HDPE bottle caps, PS packaging or PP yoghurt pots.
The decontamination efficiency of Gneuss technology is confirmed by US Food and Drug Administration approvals, EFSA compliance and numerous local approvals.
In addition, OMNI recycling systems are claimed to have good odour reduction and degassing properties for materials such as PA, SAN and other polymers, which improves the quality of the recyclate.
The systems are designed in a compact structure and offer fully automatic control of system components and flexibility to handle fluctuating feed materials. They make efficient use of the energy generated during extrusion for downstream processes, thus reducing energy consumption, operating costs and carbon footprint, says Gneuss.
MRS multi-screw extruder
Based on conventional single-screw technology, the MRS extruder is equipped with a unique multi-screw section for efficient degassing that meets food contact requirements. A simple, robust vacuum system is claimed to enable direct processing of rPET into high quality end products without pre-drying. The patented multi-screw section with counter-rotating satellite screws increases the surface exchange of the polymer melt and provides a degassing surface that is larger than other extrusion systems. As a result, the company states, impurities are thoroughly removed and the recycled pellets have good optical and mechanical properties, making them suitable for use in food applications.
Filtration technologies and retrofit solutions
At Chinaplas, Gneuss Filtration Technology will also present its patented Rotary Filtration Systems. These continuous systems are characterised by a filter disc with circular screen cavities. The special feature: the screen is changed on the side of the filter disc that is not in the melt channel. This allows the production process to continue uninterrupted and trouble-free, even at high process pressures and with highly variable post-consumer contamination levels, says Gneuss.
The RSFgenius filter model also offers automatic high-pressure segment rinsing, which is claimed to clean the contaminated screens precisely and efficiently. The segments of the screen surface are continuously cleaned with a defined, minimal proportion of filtered melt, reducing backflushing losses to a minimum.
Thanks to their compact design, Gneuss filtration systems can usually be retrofitted to existing extrusion lines.
Photo: Gneuss OMNImax recycling system with 3C rotary feeder, MRS extruder and RSFgenius filtration system