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The Gas Tunnel Oven is a core piece of equipment in large-scale biscuit production lines,cookie production machines, and bakery manufacturing plants. Using natural gas or liquefied petroleum gas (LPG) as the primary fuel, it ensures efficient, uniform, and energy-saving baking for various types of biscuits, cookies, crackers, and snacks. Compared to electric tunnel ovens, the gas tunnel oven offers lower energy costs, faster heat response, and stable operation, making it an ideal solution for both soft and hard biscuit production lines.
Heat Generation
The gas tunnel oven generates thermal energy through the combustion of natural gas or LPG in high-efficiency burners. The burners are designed to ensure complete combustion, improving energy utilization efficiency and reducing emissions.
Heat Transfer
Convection: High-temperature hot air circulates within the tunnel, transferring heat evenly to all biscuit surfaces for consistent baking.
Conduction: The stainless-steel conveyor belt conducts heat to the bottom of the biscuits, ensuring uniform texture.
Radiation: Heat radiation enhances the baking effect, helping achieve the ideal golden color and crispy taste.
Conveying System
Equipped with a servo-driven conveyor system, the oven ensures biscuits move steadily from inlet to outlet. The conveyor speed is adjustable based on biscuit thickness, type, and baking requirements.
Temperature Control
Advanced PLC-based control system with multiple temperature zones:
Zone 1: Biscuit shaping and rising
Zone 2: Moisture evaporation and starch gelatinization
Zone 3: Maillard reaction for flavor and color
Zone 4: Final drying and crisping
Real-time temperature sensors and intelligent controllers automatically adjust gas supply, burner power, and conveyor speed to maintain optimal baking quality.
Suitable for hard biscuits, soft biscuits, soda biscuits, cookies, crackers, pretzels, and other baked snacks
Energy-saving natural gas/LPG heating with stable temperature control
Modular design for easy installation and maintenance
Optional steel belt or mesh belt conveyor system
High insulation performance with rock wool layers for reduced heat loss
Compatible with complete automatic biscuit production line solutions
Uniform baking with multi-zone precision temperature control
High energy efficiency and lower operating costs compared to electric ovens
Adaptable to different biscuit production capacities (medium to large-scale factories)
Long service life with robust stainless-steel structure
Seamless integration with dough mixers, molding machines, and packaging equipment
Widely used in:
Industrial biscuit production lines
Automatic cookie manufacturing machines
Bakery equipment factories
Customized OEM/ODM biscuit machinery projects
The tunnel oven is designed with modular sections for convenient transportation and installation.
Each oven is divided into 3-meter sections to facilitate loading and unloading.
The sections are carefully wrapped with protective plastic film to prevent dust, moisture, and scratches during transport.
Depending on the oven length and customer requirements, the equipment is transported using standard 20ft or 40ft box containers for safe international shipping.
Wooden supports and reinforced steel frames can be applied for extra protection during long-distance sea freight.
This modular packaging method ensures that the tunnel oven arrives in perfect condition and allows for easy on-site assembly at the customer’s factory.
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