Bühler Group is launching OptiBake, the world’s first inductively heated wafer oven, marking a breakthrough in industrial baking. Engineered to boost quality, operational flexibility, and efficiency, OptiBake reduces energy consumption by 50% compared to conventional gas-fired wafer baking ovens. The solution, tailored for flat and hollow wafers, sets a new standard for the global wafer industry, supporting customers in achieving operational excellence and sustainability in production.
“With OptiBake, we set out to deliver more than just a new wafer oven. We challenged ourselves to combine exceptional wafer quality with unprecedented flexibility, while enabling customers to contribute to sustainability,” says Sandra Lutz, Head of Business Unit Wafer at Bühler Group. “Our electric induction heating technology responds to the global demand for higher quality and efficiency, reduced operational costs, and a significantly lower carbon footprint.”
For more than a decade, Bühler’s wafer segment has focused on developing technologies that support customer growth while reducing the environmental footprint of production. OptiBake offers a range of unique advantages that set it apart from conventional gas-fired or electric wafer ovens. While conventional electric heating has been used for decades, inductive heating offers greater energy efficiency and new possibilities for precise control.
OptiBake’s induction heating system uses electromagnetic fields to generate heat directly within the baking plates, dispensing with open flames and combustion. The result is a process that produces no direct emissions of carbon dioxide (CO2), carbon monoxide (CO), or nitrogen oxides (NOx). Energy consumption can fall to 50%, when compared to gas-fired or electrical wafer ovens, reducing the environmental impact. These emission reductions can also lead to tax and licensing advantages, along with increased subsidy opportunities.
The environmental benefits of the oven are even greater when powered by a low-carbon electricity mix. In such settings, it can significantly reduce CO₂ emissions and support broader sustainability goals. By eliminating reliance on natural gas, the system also contributes to energy security and supply resilience.
Enhanced quality and efficiency
At the heart of the oven’s performance is a newly engineered baking plate design, specifically developed to produce the highest wafer sheet quality in combination with the inductive heating system. Paired with an innovative system for individual plate temperature control, it ensures precise and consistent heat distribution throughout the baking process. The ability to fine-tune temperatures plate by plate not only improves product quality but also allows for exceptional flexibility and responsiveness – key for handling recipe changes or varying production demands. In fact, induction heating provides the ideal foundation for precise process control, enabling the system to respond quickly and efficiently to varying production requirements, ensuring consistent product quality and optimized energy use.
The low baking chamber temperatures reduce life-cycle costs by minimizing thermal stress on components such as cables and bearings. OptiBake also creates a quieter production environment by eliminating burner nozzle flow noise and simplifies heat recuperation due to the absence of combustion products. Furthermore, the new oven allows for 100% raw material utilization, as baking scraps do not burn and can be repurposed. Its operation is safe with no fire hazard as there are no open flames in the baking chamber. The system is also designed to operate without posing any electromagnetic compatibility (EMV) risks, ensuring safe and interference-free integration into industrial environments.
“With rising CO2 taxes, volatile energy prices, and changing consumer demands, companies must act now to stay ahead,” says Johannes Greil, Head of Product Management Wafer at Bühler. “OptiBake represents a milestone in industrial baking technology, delivering increased quality, efficiency, and flexibility. This powerful combination equips customers to thrive today and remain competitive in the years to come.”
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