These Polyolefin films offer superior properties, package durability and seam strength. The Shrink films are extensively used as tamper proof sealing for protecting products against dust and moisture. The Shrink films are available in two forms for industrial and consumer packaging. POUCHES & BAGS: The Polyolefin Shrink film is also available in the form of Pouches and bags with width ranging from 6 inches to 32inches and at a thickness of 19 and 25 microns.