The “New Meldin®” Opens Up New Possibilities for High-Temperature Polyimides
Applications for high-performance polyimides have always been limited by one concern above all...
A large water bottling company contacted TriStar’s engineers concerning some problems with their washing equipment. This company bottles true spring water that comes from glacial sources and, accordingly, the water flows through natural filtration directly from the source to the outlet. As this happens an interesting collection of minerals accumulates, which led to rapid corrosion of the stainless-steel machine components.
After the customer molds the PET preform and then blow molds the finished bottle, the bottles must go through a high-speed water rinse system. The bottles are loaded upside down on the machine (20,000 per hour) and the water is shot into the bottle while the turret revolves at very high speeds. Once a full revolution is completed, the bottles are released to move on to the filling stations.
The issues TriStar was asked to help resolve occurred due to the high mineral content in the drinking water, which was leading to premature corrosion of the stainless components. Specifically, the spray valve cams, the cam ring and the valve stem bearings.
The challenge in this case was to find materials that, in addition to the corrosion resistance, would also be FDA and NSF compliant, tolerate clean-down solutions, handle high dynamic motions, and be compatible with stainless steel surfaces.
These changes, in combination, successfully mitigated the corrosion issue, significantly reducing maintenance windows and cost.
This is just one example of TriStar’s consultative approach to engineering. We frequently work with customers to combine their unquestionable expertise in their own businesses with our decades of experience in bearing design and material selection to come up with creative solutions to tricky problems. If you have an engineering problem that could benefit from this approach, we encourage you to reach out to our experts.