INNOVATION | AUTOMOTIVE
Technologies, a Spanish start-up which has developed an innovative odour elimination technology based on water vapour. The process is based on the principle of internal diffusion of toxic substances and odorous compounds. During the treatment, high temperature generates a decrease in the boiling point of these compounds, which do not mix with water, enabling their evaporation from the polymer surface.
Improved sorting The quality of the recycled plastics depends heavily on the purity obtained in the sorting process. Basic sorting methods, such as floating separation, are not useful because engineering materials used in automotive applications often share very similar densities. A Danish Recycling Company called Trebo has developed a new technology for sorting different types of plastics, using fluid mechanics. The granule plastic is immersed in a liquid where it is subjected to a pre-defined movement, set accord- ing to parameters such as density, shape and size, which will suit a specific plastic mix. “When plastic particles of different types are
subjected to a specific fluid-mechanical movement, they behave differently – for example, one type of plastic will seek to move upwards, another down- wards. If the process continues for a sufficiently long time, all the particles will eventually be completely separated into two different layers. Just like in a layer cake,” said Christian Lundsgaard, Partner and Development Engineer at Trebo. The company’s chemical-free separation technology enables the sorting of complex material mixtures, a promise for automotive industry. The method does not harm the materials and allows for extremely high purities, according to declarations from the company. Another breakthrough in sorting was recently announced in the identification of black plastics. Canon announced a new Raman plastic analyser under the reference TR-A100. This innovative technology enables advanced material identifica- tion, particularly relevant to sort black plastics, commonly found in automotive upholstery. So far, it was not possible to sort black plastics via near infrared spectroscopy. The new technology employs an advanced laser scanning method, where the laser irradiation position oscillates to reduce energy density. By ensuring sufficient, tailored measure-
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