The WL8 cooking and pasteurisation tunnel is a continuous industrial oven designed for processing fresh and cooked food products in open or closed packaging using microwave technology, which can optionally be combined with an air heating system for the treatment chamber. The machine is designed to operate as part of a production line, with the product moving continuously through the oven.
A compact solution for continuous processing of fresh and packaged food products.
The microwave and air tunnel is designed for continuous operation and to achieve an average throughput starting from 20 kg/h, depending on the product, packaging format and set process parameters.
The WL8 tunnel is designed for pasteurising food products in sealed packaging and cooking food products in their packaging. The process uses microwave energy, optionally combined with hot air, as the product moves continuously through the tunnel.
MMicrowave technology transfers energy directly to the product as it moves through the tunnel.
The system consists of two 4 kW microwave power supplies, providing a total installed microwave power of 8 kW. The power can be continuously adjusted according to the product and process requirements.
Adjustment is carried out via the operator panel, which allows the power level of each microwave source to be set and its operation to be monitored.
The oven incorporates an air heating system that operates in combination with microwave technology. The air, heated by electric heating elements, is recirculated inside the chamber through fans and dedicated ducts, promoting uniform heat distribution.
The combination of microwaves and hot air allows controlled cooking and pasteurisation of the product.
The machine features a stainless steel structure consisting of a mobile base and a liftable upper hood.
The base is equipped with swivel castors with brakes, making the machine easy to move, while the hood houses the microwave generation system, its cooling system and the air heating system.
The product moves through the oven on a continuous polypropylene or silicone conveyor belt, suitable for food contact and use in a microwave environment.
The conveyor belt is 300 mm wide and its speed is adjustable, allowing the product residence time inside the treatment chamber to be varied.
The tunnel is equipped with attenuator sections at both the infeed and outfeed, featuring specially designed, patented microwave field attenuation systems that require neither hydraulic circuits nor maintenance.
The upper section of the oven consists of a movable hood that can be raised by up to 300 mm, only when the tunnel is switched off, to facilitate cleaning, inspection and maintenance, providing easier access to the machine's internal components.
The oven is operated via an operator panel, which allows the main machine systems to be controlled easily and intuitively and the operation of the microwave sources to be adjusted. In particular, the system allows the power level of each magnetron to be continuously adjusted, the main operating parameters to be monitored, and the conveyor belt speed and target temperature to be set. The system can store up to 50 processing recipes, making it easy to recall settings associated with different products or treatment cycles, with the option of connecting to factory management systems.
Main technical specifications of the reference configuration.
Desk studies, sizing assessments and energy calculations are carried out before project development. Expected performance is verified through in-house testing on actual products.
Compatible with microwave-safe, non-metallic packaging, without restrictions to proprietary trays, films or valves. Packaging is selected according to the product.
Recipes, traceability, temperature control, data logging, alarms, remote assistance and integration with existing production lines.
Microwave applicators, shielding systems, and command and control systems developed in-house to ensure safety, stability, durability and ease of maintenance.
Accessible components, clear diagnostics, identifiable spare parts and operator training: the system is designed to allow customers to carry out routine maintenance in-house, reducing downtime and dependence on the supplier.
Texture, colour, nutrients, clean-label characteristics and shelf life are verified through testing and validation.
Validated cooking and pasteurisation processes for organic production.
Download the catalogue dedicated to cooking and pasteurisation and the appendix featuring practical applications.
2026 catalogue featuring solutions, technologies and configurations for industrial processes.
Download the catalogue
Appendix featuring industrial applications and combined microwave processes.
Download the appendixWL8: industrial cooking and pasteurisation in a compact, mobile machine.