Our shrink bags use a combination of market leading films to provide superior barrier, shrink, mechanical and visual properties. With a 9-layer structure, our shrink bags use materials not commonly found in high barrier structures (including PET for overlap sealing, printability, gloss and moisture protection), and use multiple layers of highly important materials (including PA for puncture resistance and PO for high shrink). Below includes the benefits and materials used in our 9-layer structure.