Film unwinding carriage for a packaging machine

摘要

The invention provides for a process for feeding packaging film to a wrapping machine. The film is fed to an upstream and downstream main rollers defining between them a passage. As the film is fed towards the rollers, upstream and downstream guide rollers are located at positions nearest the entry and exit sides of the passage. Once the film is fed through the passage, the guide rollers move in opposite directions away from the passage.