Linde launches inline MAP leak detection technology using hydrogen

A platform for the non-destructive testing of modified atmosphere packaging (MAP) has been launched by Linde Gases.

The Mapax LD machine is designed for incorporation into an automated, high-speed MAP line. It works by introducing nonharmful, food-contact-grade hydrogen at the initial packaging filling stage. A mix of up to 3% hydrogen can be used.

Once sealed, the goods then pass under a sensor calibrated to detect hydrogen. A visual alarm is triggered when it is detected, indicating that there is a pin-prick, tear or other defect in the seal.

Mark Ewig, global marketing manager for food and beverage systems at Linde, says: ‘Mapax LD is unique in that it allows for the identification of defective packaging to be undertaken as part of the overall production process with a 100% validation rate – so that each and every item is analysed, with up to 100 checked per minute.’

This is part of a wider trend to evolve non-intrusive, high-speed monitoring systems for hermetically sealed packaging. More frequent testing minimises the number of packages that need to be rejected once a fault has been identified, and avoids the spoilage associated with traditional water or invasive needle procedures.

Linde Gases will showcase its new machine on 25-27 March at the Anuga FoodTec conference in the German city of Cologne. The hydrogen-based technology is patented and is suitable for use with meat, poultry or fish, as well as dried fruit salads, nuts, and coffee.

This article comes from Food Contact World, which provides exclusive news and analysis on developments in digital print trends, markets, and technologies.