At the recent edition of K 2013, held in Düsseldorf from October 16 to 23, Erema showcased its new INTAREMA® technology for plastics recycling, based on a newly developed and globally patented counter current technology from Erema. Many of the groundbreaking new features are implicit in the name of the technology: INverse + TAngential + eREMA, but what sets this new technology apart is its high productivity, flexibility and ease of operation, along with its highly efficient recycling of plastics.
The patented extruder system INTAREMA® TVEplus® sets new standards in the recycling of materials that are difficult to process such as heavily printed films and/or very moist materials. This is made possible through ultrafine filtration, thorough melt homogenisation and high-performance degassing in a single step. The proven basic principle of TVEplus® technology is that melt filtration takes place upstream of extruder degassing. This way, only thoroughly melted, filtered and homogenised material can pass the degassing zone of the extruder.
INTAREMA® systems are available for capacities ranging from 50 to 3,000 kg/h.
The central core technology of the new INTAREMA® system is the patented counter current system which shows its impact in the border area of the cutter/ compactor and tangentially connected extruder. Inside the cutter/compactor the rotation of the rotor disc, which is equipped with tools, forms a rotating spout so that the material is circulating the whole time. In the counter current system this material spout – unlike the previous technical standard – moves against the direction of the extruder. As a result, the relative speed of the material in the intake zone, i.e. when passing from the cutter/compactor to the extruder, increases to such an extent that the extruder screw acts in the same way as a sharp cutting edge which now cuts the plastic.
The result of this inverse tangential configuration of the new INTAREMA® plants is that the extruder handles more material in a shorter time and is much more independent in terms of the pre-compacting level of the material. To date, the worldwide technical standard has been a system in which the material in the cutter/ compactor moves in the direction of the extruder. The centrifugal forces arising in the process were used for the feeding of the extruder and the treated, warm material was thus “packed” into the extruder screw.
Article published in: FuturENVIRO December 2013