A new film from the VDI Zentrum Ressourceneffizienz (Resource Efficiency Centre) shows an optimised sorting method depicts an improved sorting and processing method for valuable plastics, bringing the plastics life cycle full circle.
MEILO, a company in Gernsheim located in southern Hesse, sorts plastic trash from the yellow barrels in 30 repetitive sorting processes until the maximal purity of variety has been attained. Plastics are first separated according to size and then subjected to an air separator. In the following step, a near infrared scanner scans the plastics on the conveyor belt as they pass, communicating to a compressed air jet at the end of the conveyor belt which plastics are recyclable. Finally, the compressed air jet blows these material aside. Thus, varying plastics are sorted by an up to 98% purity of variety. In addition to the three major valuable plastics, HPDE, PP and PET, four other well-recyclable plastic varieties are gleaned from the river of trash.
At Systec Plastics GmbH in Eisfeld, Thuringia, the plastics sorted by MEILO GmbH are further processed to produce a premium commodity for the plastics industry. Here, plastics are shredded and cleansed. Repeated circuits beneath a near LED scanner sort the plastic flakes according to color before they are melted and once more filtered. The 99% pure granules are then filled into containers and transported.