Heat is generated by twelve glass radiant filaments six each side with each opposite pair having their own temperature setting control so varying levels of heat can be directed at different parts of a container for an improved shrink finish.

Overall internal tunnel temperature is kept within close tolerances by an external temperature setting controller linked to a heat sensor inside the tunnel.

With its modular design the radiant tunnel can supplied as an individual unit or for more complex shapes or higher speeds a number of units can be positioned inline. The radiant tunnel can be used at the in-feed for pre-heating containers or after the material application to achieve an adequate time/temperature gradient for the desired shrinking result.

Options available include a system to count products in and out if there is a possibility of them falling over and a motorised tunnel lift facility.

Available as part of a full sleeving system with integral conveyor the Graham range of heat tunnels are also available as individual units to operate over a customer’s suitable existing conveyor.

To be able to fully evaluate product shrinking requirements samples of containers and shrinkable material to be used are essential. We offer a pre order test on your products so you can see the results that we
can obtain.

To support our range of shrink sleeving and tamper banding machines we offer a range of sizes and types of tunnels that also include hot air and steam.

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