Why a line needs a metal detector
A metal detector catches foreign metal particles in the finished product: shavings from equipment, knife fragments, wire. Retail chains and food safety systems require it, so more and more fish, meat and ready-meal producers install detectors. The product is checked already packed — together with the board and film.
Why gold and silver do not work
The gold and silver colour of a board comes from metallised films with a very thin layer of aluminium. For the detector this is metal. A pack on such a board triggers the detector or forces you to lower its sensitivity — which means real foreign particles are caught less reliably. Neither suits a producer.
What to choose instead of a metallised board
| Board | Metal detector | What for |
|---|---|---|
| Gold, silver | Triggers | Lines without a metal detector, festive presentation |
| White pearl | Does not trigger | A light neutral background: white fish, seafood, tuna |
| Metal-free black | Does not trigger | A contrasting background for fillets and steaks — like the usual black, but without metal |
| Any Pantone colour | Does not trigger | A board in your brand colour that makes the product stand out |
| Printed | Depends on the film | Logo, recipe, product information |
Black boards on the market are most often made from metallised film — they look black too, but the detector reacts to them. So when ordering, make sure you ask for a non-metallised black board.
How we make metal-free boards
We colour the film for board lamination ourselves. So a non-metallised board can be not only white or black but any Pantone colour — for example, the signature colour of your brand. The board stays the same: moisture-resistant, rigid and holding the product’s shape during vacuum packing.
How to test a board on your line
- Tell the technologist which metal detector you use and at what sensitivity.
- We send samples of a non-metallised board in the size and colour you need.
- Run several packs with product through the detector at working settings.
- If everything is fine, we fix the Pantone colour and size for the production order.
Leave a request — we will choose a board for your product and metal detector.
