Which packaging innovation was first developed in the 1950s by DuPont and revolutionized retail by allowing customers to see products while providing protection and extending shelf life?

Product packaging has evolved dramatically throughout history, with innovations that have changed how we preserve, transport, and interact with goods. Many packaging breakthroughs were revolutionary for their time, solving critical problems in product protection and merchandising. This trivia tests your knowledge about a significant packaging innovation that transformed retail and consumer experience. Do you know which packaging technology changed the way products are preserved and displayed?

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Blister packaging (transparent plastic attached to cardboard backing)
Shrink film (polymer plastic that tightens around products when heated)
Tetra Pak (aseptic packaging for liquid foods)
Vacuum-sealed aluminum pouches (metallic barrier packaging)