Extrusion International 2-2021

29 Extrusion International 2/2021 RECYCLING NGR has been the technology leader in LSP technology (Liquid State Poly- condensation) for years. In the NGR process, all impurities are removed from the PET melt already in the liquid phase to such an extent that the necessary requirements for food packaging, including water bottle grade, are achieved. The process produces EFSA- and FDA-compliant products with excellent results, as demonstrated by extensive testing and certification. es are required. Thus, no addition of nitrogen or similar process aids are required for iV increase. The efficiency of LSP technology is also demonstrated by direct coupling with production processes such as film manufacture, spun yarn produc- tion or the manufacture of preforms for subsequent bottle production. This eliminates a complete re-melt- ing step and the associated iV degra- dation resulting from a downstream process. The elimination of the pel- letizing process again significantly increases energy efficiency. To better demonstrate the LSP pro- cess and carry out customer trials, NGR is expanding the PET pilot plant with an additional line. Customers will thus have two LSP lines available for testing purposes at NGR since March 2021, so that both bottle-to- bottle trials and other applications can be successfully tested. Next Generation Recyclingmaschinen GmbH 4101 Feldkirchen/Donau, Austria www.ngr-world.com Since the proportion of recycled material in food packaging is to be significantly increased, especially in the beverage bottle and tray produc- tion sector, the major brand owners worldwide are now relying on NGR technology from Austria. Numerous projects that have been completed and are currently being implement- ed confirm the effectiveness and ef- ficiency of the process. By mid-2021 at the latest, plants for processing post-consumer PET will be operating on every continent. Compared to conventional systems, the NGR process offers an energy- efficient and, in terms of melt qual- ity, better physical cleaning process. The intrinsic viscosity (iV value) is constantly measured and adjusted to the customer’s target value via au- tomated control of the vacuum unit. This makes it possible to finely tune the material quality to the customer’s product specifications, including ul- tra-tight IV control, which is essential for downstream production. For the operator, time-consuming batch production is eliminated and no cost-intensive additional process- Beverage brand owners worldwide rely on the LSP technology of Next Generation Recyclingmaschinen GmbH (NGR) for the processing of post-consumer PET. In order to meet the growing interest, a further LSP plant has been available for demonstration and testing purposes sinceMarch 2021 LSP (Liquid State Polycondensation) realized on P:REACT (Images: NGR) Bottle fl akes coming fromwashing line The Field of PET Bottle-to-Bottle Recycling further improved