A survey of the dairy department shows an array of devices that secure the product against the casual sampler or the criminal tamperer. Options include tear strips, shrink bands/labels, sealed lidstock and breakaway devices on closures. Many tamper-evident designs also enhance freshness or prevent leakage.
Italy’s Sammontana Ice Cream relies on a tamper-evident lidstock from Cellografica Gerosa to seal polypropylene containers of ice cream. A peelable sealing layer and diecut tab aid the removal of the film, which is a laminate of reverse-printed biaxially oriented polyethylene terephthalate (PET)/Appeel adhesive resin. The Appeel adhesive resin from DuPont simplifies inventory requirements because it seals to PET, polystyrene and polyvinyl chloride cups and trays as well as to polypropylene. A broad temperature sealing window and excellent hot-tack maximize productivity on the packaging line. Good organoleptics mean the solvent-free lidstock doesn’t impart any off-taste or odor to the ice cream.