shrinkwrap

Shrinkwrap is a packaging method that uses a plastic film that tightens when heat is applied to encase an object. Common films include polyolefin and polyvinyl chloride (PVC). Shrink wrap differs from stretch wrap, which is pre-stretched and applied without heat; shrink wrap is heated to conform to product shapes, producing a tight seal and tamper-evident presentation. Films may be clear or printed and can be designed with barrier properties or UV resistance. In modern manufacturing, polyolefin shrink films are favored for their strength and better environmental profile compared with PVC, though PVC remains in some markets due to cost and clarity.

Process and applications: A product is placed inside a film sleeve or bag, or a sheet is wrapped around the item. Heat is applied with a heat gun or through an automated shrink tunnel, causing the film to shrink and cling to the contours, sealing the package. Shrink wrap is widely used for electronics, books, cosmetics, toys, and small components, as well as protective packaging on pallets.

Advantages and limitations: Shrink wrap protects against dust and moisture, and enhances shelf appeal while providing tamper evidence. It can be difficult to remove and may leave residue; heat can damage heat-sensitive items. Environmental concerns include plastic waste and end-of-life disposal, with recycling availability varying by region and film type. PVC use is increasingly restricted.

Shrink-wrap license: In software and packaged goods, a shrink-wrap license is the licensing terms on the packaging that become binding when the consumer opens the wrapper or installs the product. Enforceability varies by jurisdiction; many regions favor clickwrap or browse-wrap mechanisms. Critics argue such terms may be unclear or fail to meet informed-consent standards.