The Ultra-Seal® opening feature is a peelable, smooth-edge foil membrane with a metal rim for added strength. The canister comprises two plies of 100% recycled paperboard, using 90% post-consumer material.
Coffee can with valve device
Sonoco (Hartsville, SC) has developed a new composite canister that allows coffee beans hot off the grinder to be packaged. This innovative opening feature incorporates a one-way pressure-release valve that allows CO2 to escape, eliminating the need for standard vacuum packaging.