Automstic steam shrink tunnel by Aarvi Engineering. An automatic steam tunnel machine is a type of industrial machinery used mostly for sterilizing, heat-setting shrink films over products, such as bottles, cans, jars, or other containers, and heat-shrinking labels. In order to create a tight and impenetrable seal, it uses steam to heat packing materials, usually shrink films or shrink sleeves, which subsequently contract firmly around the goods. Loading Products: In order to maximize steam exposure, products are mechanically put onto the conveyor belt. Steam Heating :The packaging, which is often shrink films or shrink sleeves, is securely shrunk as the products pass through the steam tunnel by the uniform application of steam Treatment Time Control: The conveyor belt speed guarantees that the packaging has enough time to shrink without overheating by ensuring that the proper amount of time is spent in the steam chamber. Cooling: The product is quickly chilled after the steam treatment to stabilize the label or shrink film. Cooling systems guarantee that the packaging is correctly positioned and that the items are not damaged. Product Exit: The products are fully prepared with tight, tamper-evident packaging when the shrinkage procedure is finished and they have cooled.