Definition
A plastic film that, when heated, shrinks tightly around the products and pallet to form a secure, tamper-evident enclosure. Unlike stretch wrap which relies on elastic tension, shrink wrap uses heat-activated contraction to conform to the load shape. Shrink wrap provides superior weather protection and tamper evidence but requires a heat source for application. It is commonly used for outdoor storage, high-value goods, and products requiring a sealed enclosure.
Related Terms
Pallet Wrap
A general term for materials used to secure and protect goods on a pallet during storage and transportation. The most common form is stretch wrap (stretch film), a highly stretchable plastic film that is wrapped around the loaded pallet to hold items in place. Other forms include shrink wrap, which is heated to form a tight seal, and pallet netting, which provides ventilation for products that need airflow. Proper pallet wrapping is essential for load stability and product protection.
Stretch Film
A highly stretchable plastic film, typically made from linear low-density polyethylene (LLDPE), used to wrap and secure products on pallets. Stretch film is applied by hand or with automated stretch wrap machines and relies on its elastic recovery force to hold loads tightly. It comes in various thicknesses (gauges), widths, and formulations optimized for different applications. Machine-grade film offers higher productivity for high-volume operations, while hand wrap is used for lower volumes or irregular loads.
Unit Load
A quantity of goods assembled and secured on a pallet to form a single handling unit for storage and transportation. The unit load concept is fundamental to modern logistics — by consolidating individual items into pallet-sized units, material handling efficiency is dramatically improved. A well-built unit load is stable, within weight limits for the pallet and handling equipment, and configured to maximize trailer or container space utilization.
Weather Resistant
A characteristic of pallets or pallet materials that can withstand exposure to rain, humidity, temperature extremes, and UV radiation without significant degradation. Plastic, metal, and pressure-treated wood pallets offer inherent weather resistance, while untreated wood pallets are vulnerable to moisture absorption, mold, and decay. Weather-resistant pallets are essential for outdoor storage yards, open-air dock areas, and supply chains where pallets are exposed to the elements.
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Our glossary contains 165+ terms covering everything from pallet construction to compliance regulations and industry organizations.