Scaling Up: The Move to Industrial Production

As a bakery grows from a local favorite to a regional supplier, the limitations of batch baking become apparent. The transition from 'units per hour' to 'tons per day' requires a fundamental shift in equipment strategy. The two primary choices for high-capacity baking are the Tunnel Oven and the Rack Oven. While the rack oven is a staple of semi-industrial bakeries, the tunnel oven represents the pinnacle of automated, continuous production. Understanding the throughput metrics and operational differences between these two is vital for any facility planning an expansion.

Tunnel Ovens: Continuous Flow and High Velocity

A tunnel oven is exactly what it sounds like: a long, horizontal heated chamber through which a conveyor belt moves. The product enters at one end (the 'wet' end) and emerges fully baked at the other (the 'dry' end). These ovens can be anywhere from 10 meters to over 100 meters long, depending on the required capacity. They can be heated via gas, electricity, or oil, using direct fire, indirect cyclothermic heat, or forced convection. The movement is constant, creating a literal 'production line' that never stops.