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Seperation of transparent PET from other plastics

Thanks to sensor-based sorting, reclaimed raw materials from Urban mining and recycling play an important role these days in manufacturing industries. For example, glass making, paper production and plastic manufacturing all depend (sometimes close to 100%) on recycled materials. The caveat is, that in order to maintain a defined production quality when manufacturing with recycled materials, it is imperative to correctly classify and grade them beforehand.

Problem

Colour cameras can only process information in the visible light band.

Solution

EVK´s NIR Hyperspectral Imaging Systems can accurately detect different materials according to its chemical composition. This feature allows the EVK systems to operate in fields where colour cameras reach its limits. Moreover, the combination of a Colour- and Hyperspectral Imaging camera vie Sensor Fusion is an often-used solution to increase sorting sensitivity and specificity. This allows to separate materials by means of their colour, shape, size and in addition the chemical composition.

Bottle
Cap (PE-HD)
Body (PET)
Application Scan Bottle Application Bottle
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Technology

Near Infrared Hyperspectral Imaging offers the degree of classification accuracy necessary for recycling, by directly measuring the chemical molecular composition through the absorption of light (spectroscopy). Other techniques such as Conductivity Imaging offer the level of quality control required for recycling of metals in manufacturing industries.

EVK’s portfolio of sensor-based sorting technology includes Colour, Hyperspectral and Conductivity Imaging systems, which can be used individually or, with Sensor- Fusion, can be combined to form a powerful sorting application that can process multiple material types.

Hyperspectral Imaging
Data Analysis Tools
Sensor Fusion

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