Shrink Tunnel SPS 2012 The shrink tunnel S.P.S. 2012 is a heated tunnel that can be used for semi-automatic and automatic packaging. It is designed to apply the heat-shrinking technique for wrapping packages. The Shrink Machine employs a conveyor and heat to maintain a constant temperature within the tunnel chamber. The heat causes the plastic molecules to arrange closely and reduces the original area of the plastic, resulting in tight and secured packaging. This shrink tunnel is widely used in various industries such as food, stationery, hardware tools, daily necessities, and chemical products. It provides primary barrier protection to candies, nutrition, and beverages.