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“The pre-screened good products are checked for discoloration or clumping. Our customers do not accept dark grains, e.g., products with husk remains or products that are overheated.” explains Andreas Hebeisen. The system rejects products of the wrong size or color while eliminating foreign bodies such as stones, straw, plastic, glass, and others by using a combination of multispectral, pulse-controlled LED lighting technology, double-sided high-resolution RGB cameras, laser technology and innovative TOMRA analysis software. In this way, the TOMRA 3C ensures that cereals meet the highest food safety and quality requirements. At Kentaur, the only additional check occurs when the product passes through a metal detector. “The new sorting system offers a decisive advantage: it sorts even tiny grains extremely reliably. We also use it for amaranth and quinoa, for example. These are tiny goods that make it difficult to separate the black undesirable product elements from the good dark ones. The changeover to a wide variety of products and sorting features is straightforward and user-friendly. The entire puffing line is looked after by just one employee,” adds the Head of the Supply Chain Department.
Kentaur’s decision to acquire the TOMRA 3C was made at TOMRA Food’s headquarters in Leuven (Belgium). Here, interested parties can test their products with the support of TOMRA’s mechanical engineering experts. All of the sorting machines developed by TOMRA Food are available for testing at the company’s Test Center in Leuven. The results of the tests are discussed and evaluated with the engineering specialists. The tests carried out convinced those responsible at the Swiss cereal specialist. The results were finally confirmed with the installation and commissioning of the system in the Lützelflüh plant. “Throughout the entire process up to commissioning in the factory, we were looked after by the same highly competent contact persons, which created a lot of trust,” explains Andreas Hebeisen.
Since installation, the production line, including the optical sorting system at Kentaur, has been in operation around the clock, sometimes even for several weeks without being switched off. Since the beginning of the COVID-19 pandemic, the months created an additional burden for the plant and the Kentaur team. Andreas Hebeisen describes it thus: “Our roughly 90 employees mastered the extraordinary situation impressively. We were very grateful for the high demand while other industries had cause to worry. We are particularly pleased that our machines - including the TOMRA 3C taking on a key role - have withstood the heavy workload.” Even with 24/7 operation, regular cleaning is a constant requirement, especially when changing products.
If organic or gluten-free products are produced, cleaning is particularly time-consuming and can take eight to ten hours. TOMRA’s hygienic design, which enables the sorting system to be cleaned quickly, is an excellent support for Kentaur employees in implementing fast delivery times, not only at times of high stress.
The TOMRA 3C optical sorter has been in use at cereal specialist Kentaur for over a year. The Head of Supply Chain is delighted with the increase in product quality:
“Compared to the previous system from another manufacturer we are now worlds better in sorting. The new system is so precise that we have almost no issues. It has proven its excellence in every respect.”
Andreas Hebeisen, Head of the Supply Chain Department at Kentaur AG.
For Andreas Hebeisen, therefore, there is no question that TOMRA Foods will be very high on the list of possible partners should the need arise for a new sorting system at Kentaur.