Shrinkwrap refers to a packaging technique that usually involves wrapping a product in a clear plastic film which shrinks tightly over the item when heated. The term shrinkwrap has been synonymous with this process. However, there are other terms used to describe this process. These words include packaging film, heat shrink film, shrink film, and stretch film. Packaging film is a generic term that covers various films, including the heat shrink film commonly used for shrinkwrapping. Heat shrink film refers to a type of plastic that shrinks when exposed to heat. Shrink film and stretch film, on the other hand, are often used interchangeably to describe this process.