Shrink Wrapping Machine Shrinkwrapping Machine is a technique where a polyolefin plastic film is wrapped loosely around the item and it shrinks tightly around the item when the heat is applied. Shrink wrapping Machine process is generally implemented by an automated or semi-automated machine known as a Shrink wrapping Machine . When heat is applied to the film, it provides a very secure and puncture-proof way to clasp the items together for storage and transportation purposes.