Two tunnels are available. The two models differ mainly in the powder feed system for the hot-melt powder adhesive. The T100 Auto model requires regular operator intervention to control and refill the hot melt powder adhesive during production. The more advanced and autonomous recycling model T200 Auto is equipped with an automatic powder recycling system that requires very little operator intervention.

The tunnel is automatically supplied throughout production. The
operator only needs to intervene to refill the tank. The T200 tunnel is also equipped with a non-stick conveyor belt that provides better temperature stability during the curing phase of the hot-melt powder adhesive on printing inks.