The system, which consists of a membrane, a baffle film and a permanent adhesive, allows air expanding due to changes in temperature or altitude to escape a package through the valve membrane, equalizing pressure inside the package.
In addition to guarding packaged products, the air valve delivers shipping benefits during the transport of palletized, packaged goods, according to Avery Dennison. The system evacuates trapped air from flexible bags, allowing them to settle in a more compact and level manner. As a result, more layers of packaging can be stored on a pallet, and the pallet will bear a more stabilized load, the company says.
