Which packaging innovation from the 1950s revolutionized beverage retail by allowing products to be stacked, stored easily, and opened without tools?

In the world of product packaging, some innovations completely transform how we use and perceive everyday items. One particular packaging breakthrough revolutionized an entire industry by making products more convenient, portable, and extending shelf life. This invention addressed a major consumer pain point and changed retail strategies forever. Test your knowledge about this game-changing packaging discovery!

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Pull-tab aluminum can (invented by Ermal Fraze in 1959)
Tetrapak aseptic carton (invented by Ruben Rausing in 1951)
Crown cork bottle cap with integrated opener (invented by William Painter in 1954)
Resealable plastic zipper bag (invented by Steven Ausnit in 1957)