How Minebea Intec’s metal detection saved the day for a biscuit producer
False rejection and unreliable detection by their existing metal detectors along with changing regulatory requirements made metal detection difficult for Madhav Biscuits.
Key facts
Madhav Biscuits Pvt Ltd. produces toffees and biscuits for one of the World’s largest biscuit manufacturing companies. In order to be perfectly aligned to the regulatory requirements the manufacturer contracted Minebea Intec to assist on improving metal detection in the baking process and online weighing of primary and secondary packaging.
Application & Product
Minebea Intec Vistus® metal detector mounted on a PU conveyor system belt, with pneumatic end flap reject system.
Customer benefits
Improved and stable sensitivity and operational precision due to state-of-the-art metal detection technology resulting in:
- Improvements in quality assurance and food safety standards
- Easy calibration, operational comfort Improved sensitivity
- Lower losses on rejected products
- Easy cleaning and sanitizing
„In Minebea Intec we have found a reliable partner, not just a mere equipment supplier but a true solution provider. They help us ensure to deliver quality products.”
Shripat Vaid
Director Madhav Biscuits
Due to increased regulatory demands, Madhav Biscuits Pvt Ltd. upgraded its production and packaging lines in terms of inspection and weighing. During the process, the critical point metal detection also needed upgrading. The former metal detector had shown a lack of detection sensitivity when checking biscuits and often led to false rejections. Facing immense pressure for an upgrade, the customer contacted Minebea Intec India for a fast and reliable solution. A custom metal detection system Vistus® from Minebea Intec was designed and manufactured. It was installed in the processing lines, one for the dough and the other for the baked biscuits both mounted on an inclined motorized system with variable speed, pneumatic diverter flap rejection system, and PU conveyor belt. The metal detector offers fast and easy cleaning processes (IP65). The implementation of a low height multi-frequency detector head allows the adjustment of the rejection times and product passage speeds depending on the production flow, a greater detection sensitivity and efficient contaminant discard now is achieved.
The diverter flap rejection system device is pneumatically operated on the detection of contaminated particles inside the product, the compressed air supply activates a flap located at the outfeed of the conveyor. This diverts the contaminated products to a stainlesssteel bin. The use of PU conveyor belt avoids incrustations of products and allows easy and quick cleaning, requiring only small amounts of water for the cleaning and disinfection process and dries quickly saving both money and time. All in all the unique system based on Vistus® metal detection technology increases the detection sensitivity for metallic contaminants,ensuring a high quality assurance standard in the process of producing biscuits. “We are highly satisfied with the performance of Minebea Intec technologies,” summarizes Shripat Vaid, Director at Madhav Biscuits about the project.
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