POST-INDUSTRIAL RECYCLING | TECHNOLOGY
In-house and post- industrial recycling is becoming increasingly important as plastics processors look to closed-loop production to contribute to circular economy objectives. Mark Holmes finds out about technology that can help them
Closing the loop for plastics processors
Closed-loop production within the plastics industry is growing in importance, in film manufacturing and pipe production in particular, as well as for other in-house recycling operations. The post- industrial plastics recycling market is also thriving, with valuable production scrap being reprocessed to find new applications as an economical alterna- tive to virgin materials. Several manufacturers have developed shredder-extruder machinery combina- tions and other techniques and approaches to meet this growing market. Pure Loop – a member of the Erema Group – has developed shredder-extruder technology for highly efficient recycling of clean production waste. Recent additions have included high output alternatives to its ISEC Evo series in the medium to high throughput range. The company says that the ISEC Evo 702 shredder-extruder combination can process up to 1,500 kg/h of high-quality recycled pellets. Unlike other shredder-extruder recycling technology, the Pure Loop solution requires only two drives, which significantly reduces energy consumption. Heavy, lightweight, high-volume and also highly tear-resistant materials can be pro-
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cessed. The conical design of the conveyor screw results in high compaction, which in turn causes ideal pre-heating of the material, while at the same time forcing back oxygen. The oxidative effect on the material is low, which is an advantage for the quality of the melt and subsequently also for the quality of the recycled pellets. This makes particu- larly high recycling rates possible. The entire ISEC Evo series is characterised by straightforward operation and a high degree of automation, and the machines are ready to start processing quickly. A shredder-extruder combination from Pure
Loop has recently provided a recycling solution for a challenging irrigation application. This included drip tapes and irrigation pipes that accumulate as waste during the production of irrigation systems or are rejected during quality inspection. Manufac- turers which already implement this technology reuse production waste in the form of recycled pellets in proportions of up to 20%, without any loss of quality compared to production from virgin material. “This level of reuse can still be significantly
increased thanks to the high quality of the recycled May/June 2021 | PLASTICS RECYCLING WORLD 21
Main image: Erema has developed the Intarema ZeroWastePro for in-house recycling of PE and PP film production waste
IMAGE: EREMA
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