Chocolate Cooling Tunnel

AkayGAM cooling tunnels are designed for controlled chocolate setting after tempering. Depending on your product and available space, we offer horizontal, multi-storey and elevator-type layouts. Conveyor options include rod, modular belt and polyurethane belt. Insulated stainless-steel construction helps stabilize internal conditions and support consistent product finish.

  • For molded chocolates
  • For deposited drops, coins, callets
  • For enrobed products
  • Configurable length and belt width
  • Insulated cabinet for stable cooling
  • Options for belt tracking and tensioning
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Cooling tunnel layouts and conveyor options

Available as elevator type, multi-storey type, and horizontal type. Product conveying may be a rod conveyor, modular belt conveyor, or polyurethane belt conveyor. Designed for molded chocolate cooling (with molds) or deposited onto belt cooling (drops, coins and similar products).

ETCT275108 vertical cooling tunnel for artisans CT400 horizontal cooling tunnel for artisans
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CT1200 industrial horizontal cooling tunnel

ETCT275108 vertical cooling tunnel for artisans - technical features

  • Elevator-type cooling tunnel.
  • Suitable for chocolate shell lines or complex molding lines.
  • Suitable for manufacturers with limited space.
  • Up to 80% length saving compared to a horizontal cooling tunnel.
  • Completely made of AISI 304 grade stainless steel.
  • Insulated with CFC-free rubber.
  • Evaporator and condenser.
  • Three or four molds move up at the same time.
  • Eighteen vertical stages.
  • Rodless pneumatic cylinder for horizontal mold transfer at the top.
  • Mold loading capacity can be 108 or 144 molds.
  • Can be designed for any mold size.
  • Total power consumption: 380V three-phase 8.5 kW.

Recommended applications

  • Molded chocolates on complex molding lines
  • Installations where footprint is limited

ETCT275108 technical drawing

Technical drawing of ETCT275108 vertical cooling tunnel for chocolate molding line

CT400 horizontal cooling tunnel for artisans - technical features

  • Cooling tunnel with polyurethane belt conveyor.
  • Suitable for cooling enrobed products or deposited onto belt products like chocolate drops or coins.
  • Not suitable for molded products.
  • Completely made of AISI 304 grade stainless steel.
  • Insulated with CFC-free rubber.
  • Top lids with gas springs.
  • Lighting inside lids.
  • Evaporator and condenser.
  • Can be designed up to 12 mt. length and max. 600 mm. belt width.
  • Total power consumption: 380V three-phase (kW. depends of length and width of cooling tunnel).

Recommended applications

  • Enrobed products after an enrober
  • Deposited drops, coins, callets on a belt

CT400 technical drawing

Technical drawing of CT400 horizontal cooling tunnel

CT1200 industrial horizontal cooling tunnel - technical features

  • Cooling tunnel with polyurethane belt conveyor.
  • Suitable for cooling enrobed products or deposited onto belt products like chocolate drops or coins.
  • Not suitable for molded products.
  • Completely made of AISI 304 grade stainless steel.
  • Insulated with CFC-free rubber.
  • Top lids with gas springs.
  • Evaporator and condenser.
  • Can be designed any length and max. 2 mt. belt width.
  • Total power consumption: 380V three-phase (kW. depends of length and width of cooling tunnel).

Recommended applications

  • Industrial enrobing lines and high-output belt products
  • Wide belt configurations and long residence time

CT1200 technical drawing

Technical drawing of CT1200 horizontal chocolate cooling tunnel

Design and operating principles of chocolate cooling tunnels

Chocolate cooling tunnels are built as insulated stainless-steel cabinets designed to maintain stable internal temperature and airflow conditions during chocolate setting. Conveyor selection depends on the product format and process layout, and may include polyurethane belts, modular belts, rod conveyors, or rail-based mold transport systems.

Polyurethane belt tunnels are typically equipped with belt tracking and pneumatic tensioning to ensure stable operation during continuous cooling. Access-friendly lids and removable panels support cleaning and maintenance, especially in molding and enrobing lines.

In elevator and multi-storey designs, product or molds are transferred vertically to increase residence time without extending line length. These configurations allow high cooling capacity to be achieved in installations where available floor space is limited.

Options and integration

  • Infeed/outfeed matched to depositor, molding line or enrober
  • Conveyor selection: rod, modular belt or polyurethane belt
  • Access-friendly lids and panels for cleaning and maintenance
  • Belt tracking and tensioning options for stable operation

For connected lines, consider pairing a cooling tunnel with a chocolate enrober, drops and coins line, or molding line to build a complete forming and cooling section.

What affects chocolate quality in cooling

Cooling must be controlled because chocolate continues to set after tempering. Stable temperature and controlled air conditions help reduce surface defects and support consistent demolding or packaging. For belt cooling, stable belt tracking and uniform airflow are important for even setting across the belt width.

  • Controlled temperature profile for consistent setting
  • Dry air management to reduce condensation risk on cold products
  • Insulated cabinet to stabilize internal conditions
  • Conveyor selection matched to product (molds vs belt products)

We use mist eliminators to deliver dry air onto the product.

How to choose the right cooling tunnel

For molded chocolates

Choose elevator or rail-based multi-storey designs that handle molds and provide stable residence time for demolding.

For enrobed products

Choose belt cooling tunnels with stable belt tracking and easy access for cleaning, especially at the infeed/outfeed.

For drops, coins and callets

Choose belt tunnels sized for piece density, belt speed and the target residence time based on output capacity.

When space is limited

Multi-storey or elevator types reduce footprint while maintaining cooling capacity and residence time.