An overwrapping machine is a type of packaging equipment used to package products in a sealed, overwrapped film. The machine operates by using heat and pressure to wrap the film tightly around the product, creating a secure and tamper-evident package. The film used for overwrapping can be made of materials such as PVC, POF, or PET, and is usually cut to size and fed into the machine by a hopper or reel. The machine then uses a series of rollers and heat sealing mechanisms to wrap the film around the product, before cutting and sealing the ends of the film to complete the package. The exact design and operation of an overwrapping machine can vary depending on the specific model and the product being packaged.