Food Packaging Plants

Pasteurization tunnels

For the heat treatment of packaged products

Alcos develops pasteurization tunnels in various sizes, designed for the heat treatment of already packaged products.

Available in different sizes, they integrate easily into industrial packaging lines thanks to their modular structure, which simplifies transport and allows for future expansions of production capacity.

Technical features

Control and safety systems

Models and applications

Model	Application	Production capacity
Type 15,5-6-6	Beer	25.000 bottles/h
Type 21,5-5-7	Sparkling wine	10.000 bottles/h
Type 9-2-6	Wine	3.500 bottles/h
Type 24,5-4-6	Soft drink	36.000 bottles/h
Type 8-1-4	Soft drink	2.500 bottles/h
Type 12-3.2-6-2	Beer	25.000 cans/h
Bottle Warmer Type 8.2.1	Sparkling wine	12.000 bottles/h

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Pasteurization tunnels

For the heat treatment of packaged products

Technical features

• AISI 304 stainless steel structure with square tubular section and external protective coating

• Modular construction: facilitates container transport and allows for the addition of modules in the future

• Internal conveyor with plastic chain and external gear motor; adjustable speed

• Shower zones at differentiated temperatures for a customizable heat cycle

• Lower tanks connected by overflow channels, with access openings, inspection doors, quick drains, overflow outlets, and double panel filters to protect the pumps

• Openings with protective doors for maintenance of manifolds and nozzles

• Container infeed and outfeed belts integrated into the machine end sections

• Fixed transparent side panels on stainless steel frame; front panels opening on gas struts for easy access and maintenance

• Conveyor belts available in polyethylene, polypropylene, acetal resin, or stainless steel

• Water heating by steam, with heat exchangers, immersed coils, or steam injectors (customer's choice)

• Heat exchangers in the cooling phase to minimize water consumption

• Three-lane stainless steel slat discharge conveyor with adjustable side guides, variable speed, and drip-off unit with centrifugal fan and adjustable air diffusers

Control and safety systems

• Cycle control via PLC with touch operator panel; PT100 temperature probes for each zone; proportional pneumatic valves for flow rate regulation

• Electronic graphic recorder storing all variables of the pasteurization cycle

• Automatic anti-overheating system in case of conveyor stoppage in the pre-pasteurization and pasteurization zones

• Water-saving system with automatic control of water temperature in the tanks

• Anti-over-pasteurization PU control system: in case of a downstream line stoppage, a system of valves and thermal controls minimizes product overheating; upon restart, the machine automatically restores temperatures to the set values

• Mobile temperature recorder insertable into the container for monitoring the heat cycle at the product core (e.g. every second), with automatic generation of the process chart

• Container drying system with high-pressure, low-noise fan (63 dBA) and adjustable air knives; water is fed back into the machine

• Water hardness control with additive dosing on the water volume in the pasteurization zone

• Microbiological growth control: additive treatment in the pre-heating and cooling tanks

• Sanitization of tanks, walls, roof, and shower pipes with foam system after tank draining

• Electrical panel with paper temperature recorder, front-mounted on the control cabinet

• Solenoid valve assembly for machine control with pressure switch and compressed air filter-regulator

Models and applications

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