Infra-red shrink tunnel machines are designed for continuous shrinking of PVC and polypropylene films used in shrink packaging. CN-4520A is equipped with an adjustable speed conveyor and 2 temperature controllers for upper and lower heaters. The tunnel is heated on 4 sides by 10 infrared replaceable tubes. Tunnel comes with a stand and wheels. It can be used on a tabletop or free standing on the floor. The machines are easy to operate. You simply turn on the power and the heater. Adjust teh conveyor speed according to the thickness of the film. Put the package on the conveyor belt and the film shrinks tightly around the package as it goes through the tunnel. Tunnels with double conveyor belt, CN-4520AD, and a net conveyor belt, CN-4520AN are available. Wider, higher, and longer tunnels are available on special order. Downloadable Specification Sheet (pdf)