Homethe Packaging World StaffPrimary packagingInnovations in plastics help foods flourishPinched-grip PET, an innovative pastry bag, a take-out bag for chicken, foamed CPET, and barrier beer bottles and food containers all win DuPont awards.Primary packagingInnovations in plastics help foods flourishPinched-grip PET, an innovative pastry bag, a take-out bag for chicken, foamed CPET, and barrier beer bottles and food containers all win DuPont awards.