Single Phase Shrink Tunnel Wrapping Machines is a metallic tunnel that sits above or is built around a conveyor. The tunnel has a heating element that heats the products as they move through the machine. Single Phase Shrink Tunnel Wrapping Machines are conveyed through the tunnel and are cloaked with loosely fitting shrink film. The polyolefin shrink film and heat are used to shrink the film tightly around. Shrink-packing machines are very handy when a bulk of goods needs to be shrink-wrapped.