X-ray examination of containers with metallized foil

Metallized foil is becoming increasingly popular as a food packaging material due to its ability to extend product shelf life and appearance. Ideal for stand-alone pouches, metallized foil is a popular packaging format in the snack sector such as nuts, dried fruit, biscuits and crisps, as well as within the food industry: mixing sauces, rice and baby food.

Metallized bags present a product inspection challenge for manufacturers and brands. X-ray food inspection equipment can help meet specifications by ensuring the safety of products packaged in this packaging.

Better sensitivity of metal detection

Metal detectors have difficulty meeting the required specifications when inspecting products in film-coated metallized bags. This is because metal packaging creates a large effect on metal detectors, requiring them to operate at a reduced level of sensitivity.

In contrast, metallized film presents no challenge to X-ray inspection systems of any size or shape. Since the foils have a very low absorption value, the packaging does not affect the X-rays. This technology can inspect a wide range of products packaged in metallized films and offer a better metal detection specification compared to metal detectors.

Detection of physical contamination

Besides metal, food

Some bagged foods, such as nuts or trail mix, contain large variations in density. Finding physical contaminants in these products can be a challenge for traditional inspection systems.

Quality guarantee

X-ray detection systems can provide quality assurance for products packaged in metallized bags by performing a series of product integrity checks typically associated with checkweighers and vision systems.

Unlike metal detectors, X-ray technology can simultaneously measure mass, inspect product seals for malformations, detect excessive thickness and detect missing components, making the total cost of ownership and return on investment more attractive than single-function systems.

Compliance with regulations

By helping brands comply with Hazard Analysis and Critical Control Point (HACCP) regulations, X-ray food inspection systems can achieve certification from several schemes recognized by the Global Food Safety Initiative (GFSI). ) (SQF) 2000.

Improved data collection

X-ray systems allow brands and manufacturers to export production data, as well as save images of rejected products for offline review. These images are tagged with the product name, date, time and reason the product was rejected.

By tracking production at every stage, systems can improve product traceability and provide manufacturers with due diligence capabilities.

Christy Draus is Eagle’s Product Inspection Marketing Manager.

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