Which packaging innovation, discovered accidentally in 1959, revolutionized food preservation by creating a vacuum seal when heated?

Product packaging has evolved dramatically over the centuries, with innovations that have transformed how we preserve, transport, and market goods. From early clay vessels to modern sustainable solutions, packaging innovations reflect our technological advancement and changing consumer values. This trivia question explores a groundbreaking packaging discovery that revolutionized the food industry and extended product shelf life in ways previously unimaginable.

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Retort pouches (flexible packaging that can withstand high-temperature sterilization)
Aseptic packaging (allowing room-temperature storage of perishable food)
Vacuum skin packaging (where plastic film conforms tightly to product shape)
Modified atmosphere packaging (replacing air with gases to extend shelf life)