If you've ever struggled with inconsistent roast batches, excessive manual labor, or production capacity constraints in your nut or snack production line, you already know the frustration. Batch roasting might work at smaller scales, but once volume and consistency become a factor, it starts showing its limits fast.
That problem can be solved with a continuous multi-layer belt oven, and it's exactly what we've engineered at FoodTechProcess.
The real problem with batch roasting at scale
Batch ovens and roasters introduce variability by design. Each load is a new variable: how full the drum is, how long it runs, how the operator judges "done." Over hundreds of cycles a day, those small differences add up to inconsistent color, uneven texture, and product that doesn't behave predictably in downstream processing or packaging.
Industrial buyers don't want "mostly consistent." They need repeatable results.
How the FoodTechProcess multi-layer belt oven works
Our industrial belt oven DR5 moves product continuously through a controlled thermal environment rather than processing it in isolated batches. Product enters one end and exits roasted and cooled at the other, with no manual intervention required between those two points.
The system uses a five-level stacked conveyor configuration, three heating levels followed by two integrated cooling levels. As the product cascades from one belt to the next, it naturally turns and redistributes, which is one of the simplest and most effective ways to improve roasting uniformity without adding mechanical complexity.
Three independent heating zones
The roasting section is divided into three separate zones, each with its own PID temperature controller. This matters because different products and different stages of the same product require different heat profiles. Fine-tuning zone by zone gives you real control over how roasting develops, instead of a single dial to turn up or down.
Total installed infrared heating power is 60 kW (3 × 20 kW), which is highly efficient for the throughput range this machine is designed for.
Integrated cooling — Not an afterthought
Most manufacturers treat cooling as something that happens after the oven. We've built it directly into the machine structure.
After leaving the heating section, product transfers automatically onto two cooling conveyors before discharge. This matters more than it sounds: residual heat inside a roasted nut or seed continues developing the product even after it leaves the heating zone. Without controlled cooling, you lose precision on the roast level you worked to achieve. With it, you get stable, consistent results that hold up through packaging and storage.
What products is this designed for?
The belt oven handles a wide range of granular and seed-form products well, including:
- Peanuts, almonds, hazelnuts, and other tree nuts
- Sunflower and pumpkin seeds
- Cereals and breadcrumbs
- Snack pellets and extruded products
Essentially, if it's granular, goes on a stainless steel mesh belt, and needs controlled thermal processing, this machine is worth evaluating.
Technical specifications at a glance
- Conveyor levels - 5 total (3 heating + 2 cooling)
- Heating power - 60 kW (3 × 20 kW infrared)
- Conveyor dimensions - 3579 × 500 mm
- Speed control - Variable via frequency converter
- Capacity range - ~100–250 kg/h (product-dependent)
- Temperature control - Independent PID per heating zone
- Construction - Food-grade stainless steel
Can fit into a complete production line
The oven doesn't have to operate in isolation. A coating machine upstream can be added to apply oil, salt, spice blends, or other flavorings to the product before it enters the roasting chamber. We also offer dedicated feeding conveyors to ensure a consistent, even product layer on the belt — which directly improves roasting uniformity and protects the machine from overloading.
The system is designed to support integration of additional equipment required for constructing a new production line.
Who should be considering this?
This oven is the right option to have if you're:
- Scaling up nut or seed roasting beyond what batch equipment can handle reliably
- Running a snack production line that needs consistent throughput and roast quality
- Looking to reduce labor involved in manual batch monitoring and handling
- Trying to improve shelf-life consistency by controlling how products are cooled after roasting
If any of those describe your situation, we're happy to walk through, whether this system fits your specific product and capacity requirements.
View the full Belt Oven DR5 product page and specifications on our website.
