Blue FDA-compliant knife edge rollers from igus for maximum belt speeds

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Rollers made of a new iglidur A250 high-performance polymer, convey food reliably across the gap between conveyor belts

igus has now developed a new high-performance polymer especially for use in food production. With iglidur A250, the motion plastics specialist extends its product range for knife edge rollers. The blue tribo-polymer is not only optically detectable, FDA and EU-compliant, but also wear-resistant and withstands high belt speeds of up to 1m/s.

As a result of the increasing demands for productivity in the food industry, the speeds of the plant and thereby the requirements on the machine elements are increasing more and more. This is also a challenge for knife edge rollers that guide pasta conveyor belts, for example. With over 50 years of experience in plain bearing technology, igus has now developed a new material for precisely this application. “With the new iglidur A250 tribo-polymer, for the first time we have a polymer in our product range that meets the strict hygiene requirements of both the FDA and EU 10/2011 regulations and is also suitable for high belt speeds”, explains Lars Braun, Head of Sector Management, Food and Packaging Technology at igus GmbH. This makes the high-performance polymer ideal for knife edge rollers. The new rollers made of iglidur A250 require only a low drive power due to the minimisation of the coefficient of friction. Like all iglidur polymers, iglidur A250 is free of external lubrication, insensitive to dust and dirt and easy to clean. Thanks to its blue colour it is also optically detectable. The new material was able to demonstrate its long service life and wear resistance in the in-house 3,800 square metre igus test laboratory. Here it was shown that iglidur A250 has a service life up to 10 times longer than other igus FDA-compliant materials at maximum belt speeds.

Knife edge rollers for safe transport

For years, knife edge rollers made of iglidur tribo-polymers have been proven solutions in the food industry when it comes to transporting products over knife edge transitions that are restricted by installation space.

This is because if two conveyor belts for very small products are joined together, the radii of the guide rollers result in a gap between the belts. A problem for raw croissants, biscuits or even cakes. They can quickly slide into the gap between the conveyor belts. For safe transfer of the pasta from belt to belt, the deflection radii between the belts of the flow lines must therefore be kept small. This is where the knife edge rollers come into play, because they are compact and safely guide the belts. Besides iglidur A250, igus also offers the materials iglidur H1, P210 and other food grade solutions such as A180 and A350 in its knife edge roller product range.


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