Heat tunnels are used to apply shrink seals and shrink sleeves to products.  Heat tunnels can be used by individually and manually placing shrink seals or sleeves on a product and sending them through the tunnel or a heat tunnel can be integrated into a new or existing packaging system by placing the tunnel on a conveyor system. 

Heat tunnels allow for control of the temperature or heat being emitted so that a wide variety of container sizes, shapes and materials can be run through these packaging machines.