A patent-pending technique developed by Extrusion Dies Industries, LLC (EDI) adds a new dimension of oxygen and moisture control to food packaging. The “active microlayer” technology combines the concepts of active packaging and microlayer extrusion, yielding film and sheet in which layer multiplication is applied not only to the barrier polymer but also to active components such as oxygen absorbers or desiccants. Previous research by EDI has demonstrated that by dividing and recombining the barrier layer to create many micro-barrier layers, it is possible to increase significantly the shelf life of retort and hot-fill containers, stand-up pouches, and vacuum skin packaging. Now researchers at EDI’s Technology Center in Chippewa Falls have gone a step further by incorporating active components in layers outside the barrier core, then subjecting those components to layer multiplication as well.
Extrusion Dies Industries
(715) 726-1201; www.extrusiondies.com