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When it comes to handling dough in the food processing and baking industries, maintaining consistency is crucial. As dough moves through machinery to become the final baked product, the metal surfaces involved must remain smooth and free of sticky residues. If not, the quality and consistency of the product suffer, and frequent cleanings disrupt productivity. While coating metal surfaces might sound simple, achieving this effectively is quite challenging.
A baked goods manufacturer approached us with concerns about a stick-release issue they were facing. During their baking process, dough is placed into a hopper, transferred to a trough, and then cut into various sizes. However, the dough often clings to the hopper walls, rotary knives, and spreader rollers, impacting portion accuracy and increasing cleaning times. Despite using a PTFE coating on these parts, the results were underwhelming. Adding to the challenge, vegetable oils used in the product made the workspace excessively slippery, complicating cleanup efforts.
To address these issues, we recommended a USDA- and FDA-compliant Plasmadize® surface treatment. This advanced thermal spray composite bonds mechanically to the substrate, altering its surface properties to create a non-porous, moisture-resistant barrier. Depending on the specific polymers used, Plasmadize provides exceptional non-stick capabilities with an impressively low coefficient of friction (COF). In fact, most Plasmadize coatings exhibit a lower COF than typical tungsten carbide or ceramic thermal spray surfaces. Key features and specifications include:
- Excellent wear resistance.
- Operating temperature range from -200°F (-129°C) to +1,300°F (+704°C).
- Hardness surpassing the Rc scale.
- Resistance to acids, alkalis, chlorides, most organic solvents, sulfites, thiosulfates, and pulp bleaching chemicals.
Following the application of Plasmadize to two hoppers, rotary knives, and spreader rolls, the customer noticed a significant reduction in cleaning requirements and downtime. Additionally, less flour is wasted on equipment surfaces, resulting in cost savings during production.
For more effective protection against sticking, Magnaplate coatings are tailored with various polymers and materials to resolve issues related to sticking, wear, and other application-specific challenges. Whether you need a solution for buildup, mold release, or dealing with sticky materials, our specialists can help design the perfect coating for your needs.
For further details about Plasmadize thermal sprays, please visit our product page.