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Metal detector copes with aluminium packaging

Supplier News
article image As aluminium cannot be magnetised, the magnetic sensors do not see the aluminium packaging.

MESUTRONIC, represented in Australia by Perfect Packaging , has released the AluScan metal detector. It can reliably detect ferrous and stainless steel metal contamination in foil packed products in food industry.

Packaging containing aluminium is found in ready meals, pies, pastries and snacks. The magnet sensors can reliably detect the rest-magnetism in stable aluminium trays. The AluScan closes the gap between conventional metal Detectors and the costly X-ray systems commonly employed for metal detection in the food industry.

The products presented for inspection travel on the AluScan conveyor through a permanent magnet, where it is magnetised and carried over the magnetic sensor bed. As aluminium cannot be magnetised, the magnetic sensors do not see the aluminium packaging.

Products contaminated with ferrous and/or stainless steel are detected by the AluScan and automatically rejected by the drop belt reject mechanism, without interruptions to the production process. Other reject options are available, including pushers and air-blast rejectors.

The dynamic control system ensures that only the contaminated product is rejected, regardless of the product gap and operating speed. For products higher than 50mm an additional sensor can be positioned above the product looking down, ensuring an accurate level of ferrous and/or stainless steel contamination detection.

The complete AluScan system consists of magnet, conveyor, metal sensors and reject mechanism. It is simple to integrate into almost any production line due to its compact dimensions.

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