Reducing Noise Pollution by 80% in High-Speed Aseptic Filling Systems
At JBT Marel, I was tasked with solving a critical mechanical optimization within their high-speed linear filling lines: persistent noise pollution caused by magnetic bottle-clamping impacts. In an industry where operator safety and aseptic integrity are paramount, traditional sound-dampening materials are often prohibited due to hygiene risks. My research focused on re-engineering the system to eliminate the physical source of the noise. By combining rotational geometry with food-grade additive manufacturing, I developed a solution that optimized the machine’s footprint while strictly adhering to EHEDG sterilization standards.
Noise pollution in an aseptic environment
Aseptic filling machines—used for dairy, juice, and medical products—operate in strictly controlled environments where contamination is not an option. The core issue was the magnetic transport system used to clamp bottles. At high speeds, the magnets would collide with significant force at the infeed and outfeed, creating a constant, high-decibel “smashing” sound. This noise was a significant safety concern for operators and a mechanical stressor for the machine itself. The engineering friction lay in finding a dampening solution that could sit directly on the border of an aseptic zone without violating EHEDG hygiene standards.
Transitioning to Rotational Geometry
I moved away from the traditional linear movement profile and developed a rotational geometry for the clamping mechanism. This shift allowed for a smoother “landing” of the magnets, significantly reducing the impact force.
- Footprint Optimization: The rotational design allowed for a more compact device, freeing up valuable space within the machine’s sterile enclosure.
- Additive Manufacturing for Food Safety: I utilized food-grade additive manufacturing to create complex, organic shapes that are impossible to machine. These parts were designed with zero “dead zones,” ensuring that even the internal geometries remained fully cleanable during sterilization cycles.
Prototyping & Technical Validation
To move beyond theory, I built a functional prototype and a dedicated testbench to replicate the machine’s high-speed cycles.
Prototyping Value: Testing the 3D-printed assemblies allowed for rapid iteration of the geometry, ensuring the mechanical timing was perfected before committing to final material production.
Acoustic Data: I used decibel meters to capture and compare frequency graphs across various timings and speeds. This data-driven approach validated a projected 80% reduction in noise pollution.
Introducing Food-Grade Additive Manufacturing
A key part of my contribution was advising the engineering team on the strategic use of food-grade SLM printing. By demonstrating how additive manufacturing can reduce part counts and simplify assemblies, I showed the company a path to faster replacement parts and lower manufacturing costs. This project proved that R&D can simultaneously improve worker safety (noise), machine reliability (reduced impact), and hygiene (simplified geometry).
