TECHNOLOGY | RECYCLING AND COMPOUNDING
allows for maximum flexibility with low energy consumption and is designed to process fibre waste from production processes without prior shredding. The technology is ideal for processing material with medium levels of contamination like spinning oils, spin finish and additives, which it removes from the fibres. The double-feed ram system feeds unshredded
IMAGE: EREMA
Above: Erema Group is targeting growth in recycling PET fibres in textile production
ous fibres and fabrics. The new ISEC evo FibrePro:IV incorporates
improved technologies that make it possible to repelletise PET fibre and fabric production waste. The textile recycling machine is based on Pure Loop’s proven technology from the base ISEC evo design, comprised of a single-shaft shredder and a patented double-feed-ram system with a conical transition to the extruder, with the addition of a new Intrinsic Viscosity (IV) optimiser device which raises the IV of the material to the required level during the melt phase. Fineness levels of up to two decitex are possible with 100% recycled pellet content, says Pure Loop (decitex is a metric unit mainly used for continuous filament yarn, and is defined as the mass in grammes per 10,000 m). The quality of the rPET pellets made from the regranulate processed by the ISEC evo FibrePro:IV can be fed back into high-quality applications in the textile industry, including filament fibres, carpet yarns or staple fibres without the need to add virgin material, Pure Loop says. The machine thus allows for fibre-to- fibre recycling. Pure Loop offers the ISEC evo FibrePro:IV in sizes for outputs of 450 kg/hr, 900 kg/hr and 1,350 kg/hr. The all-in-one integrated machine design
fibre waste to the single-shaft shredder, where it passes in a controlled flow into the extruder and is filtered. The shredder is equipped with high-per- formance knives specifically designed for shred- ding textiles. Pure Loop says the generously proportioned conveyor chamber and cutting space width allows the machine to meet requirements for a wide range of projects. The melt generated during the extrusion step is fine-tuned in the IV optimiser, which has been improved to extend the residence time of the PET melt. The longer residence time allows for removal of the contaminants, improves the quality of the regranulate and allows for an increase in the IV value of the PET melt after extrusion. IV is raised by the device via polycondensation. The melt can be pelletised or directly processed into rPET fibres. Erema has opened a test centre where a
cross-company team is working on recycling solutions for fibre-to-fibre applications. The centre operates a fully equipped and variable industrial- scale recycling plant that includes the peripheral technology required for fibre materials and is available for trials using customer’s material streams. In this test centre the FibrePro:IV technol- ogy is available as ISECevo version as described above, but also as Intarema version for the process- ing of shredded PET fibre materials heavily contaminated by spinning oils in such a way that the finest fibres can be produced again from the recycled pellets. Customers can select from a basic test conducted using 1 t of PET fibre material or a full-loop test running 3 t of the material. Either test
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