as a “game-changing 4-in-1 optical sorter for PET recyclers”. It incorporates a custom-built inspection system, highly accurate double-sided cameras, and flexible chute configuration. Various models are available, with up to five chutes. Lawrence Kuhn, Bühler’s new Head of Segment for Plastics, says the new system can be used for simultaneous colour, polymer, foreign material and loose-label sorting. The Sortex A GlowVision has a simultaneous re-sort function, said to deliver the highest ever reject concentration (up to 40% when the re-sort channel is deployed). The Sortex A GlowVision deals effectively with

Above: UniSort Unibot

working in a post-consumer packaging plant doing quality control

manufacturer of polyester and polypropylene strapping and cord. Earlier this year, AMP said it piloted an automat- ed facility in Denver, Colorado, that can economi- cally sort through low volumes of residue to recover mixed plastics like PET, HDPE, LDPE, PP, and PS, as well as other recyclables such as beverage cans and corrugated cardboard. “AMP’s secondary facilities drive down the cost of recovery while creating contamination-free, high-quality bales of recycled material for resale,” it says. In March, it said it planned to roll out a number of secondary facilities in other parts of the country during 2021. Steinert’s UniSort Unibot relies on complex sort-

ing programmes facilitated by a combination of sensors made up of high-resolution NIR and colour cameras. This combination is also found in other UniSort EVO 5.0 models. UniSort software inte- grates object-related, AI-based sorting pro- grammes as well as integration into Steinert Intelligent Digital Solutions for Waste Recycling. The company says the UniSort Unibot was designed for the most cutting edge sorting facilities in the world. It integrates itself seamlessly into the latest UniSort plant control system, and so can check and, at the same time, assess the quality of the material flow. It can react to the material flow immediately so that legal or customer-specific requirements can be met. UniSort Unibot also relies on the use of Steinert’s AI-based Intelligent Object Identifier. In addition to the previously optically detectable characteristic, the sorting programme also benefits from optical properties of the objects. The UniSort Unibot uses a high-speed delta

robot that allows 60 picks per minute. Robot cells are individually adapted to customer requirements, so for example a second robot can also be added for higher throughputs. Global sorting technology group Bühler

recently unveiled Sortex A GlowVision, describing it 20 PLASTICS RECYCLING WORLD | September 2021

opaque, white, and transparent coloured flakes, as well as on polymer defects including PVC, PC, PS and PA. It also sorts out metals and loose labels. It comes with Bühler’s built-in Sortex cloud-based monitoring system subscription. This continuously analyses data straight from the Sortex A GlowVision and provides operators with real-time monitoring of key performance indicators such as yield and throughput. The dashboard of the Sortex monitoring system can be viewed on mobile devices, providing an overview of each sorter, with alarms able to notify the customer when their key parameters are out of specification. “The Sortex monitoring system measures input contamination and defect trends, which are useful performance parameters,” Kuhn says. “Warnings for over and under ejections of certain defect types allow operators to immediately adapt their opera- tions and ensure the quality output level.” Optional SortControl helps to integrate the

sorter with a local automation system, enabling central data collection. Kuhn says: “SortControl pro- vides management information about the solution’s status, recipes, etc. With our digital solutions, processors can maximise uptime, maintain optimal performance, avoid constantly monitoring tech- nologies and maximise their return on investment.” Pellenc ST, which specialises in intelligent and connected sorting, says it has developed Mistral+ Connect to meet the new standards of “4.0” sorting centres. “Mistral+ Connect shares the all-in-one design concept of the Mistral+ Full Package,” it says. “This TÜV Rheinland certified equipment com- bines a rapid conveyor belt with a detection system and an output box to guarantee quality all along the sorting value chain. The machine is simple to install, safe and easy to access.” A new Flow Detection system combines a new

spectrometer covering an extended NIR/VIS spectrum with focused lighting. It enables high purity sorting, like the separation between PET


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